Return to search

Lignifica??o comparativa de Eucalyptus urophylla S. T. Blake por ferramentas biotecnol?gicas e polimeriza??o in vitro. / Comparative lignification of Eucalyptus urophylla S.T.Blake by biotechnological tools and polymerization in vitro.

Submitted by Leticia Schettini (leticia@ufrrj.br) on 2016-09-20T12:51:17Z
No. of bitstreams: 1
2009 - Maria Beatriz de Oliveira Monteiro.pdf: 6872732 bytes, checksum: c5bedd487727835e97ae3e6b493349b3 (MD5) / Made available in DSpace on 2016-09-20T12:51:17Z (GMT). No. of bitstreams: 1
2009 - Maria Beatriz de Oliveira Monteiro.pdf: 6872732 bytes, checksum: c5bedd487727835e97ae3e6b493349b3 (MD5)
Previous issue date: 2009-05-29 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior-CAPES / In spite of the technological progresses, the understanding of the lignin structural
formation is still matter of scientific investigations. This research aimed to utilize
Eucalyptus urophylla S.T. Blake callus for lignin production. This callus were obtained
from stems segments explants grown in culture medium added with a combination of
the cytokine TDZ and the auxins acid indole-3-acetic (IAA), acid ?-naphthaleneacetic
(NAA) and acid 2,4-dichlorophenoxyacetic (2,4-D). This growth regulators were
utilized either alone or mixtured. For cell suspension production it was utilized callus
obtained in medium culture added with 20?M IAA + 3?M TDZ, after 30 days of
growth in vitro. Once the cells suspension was obtained, the lignin production was
induced by four elicitors: jasmonic acid (JA), NAA, sucrose and control (without
elicitor). It was used a completely randomized design with four replications. Each plot
consisted of an Erlenmeyer with 125 ml of cells suspension culture. The Wiesner test
confirmed the lignin presence in all treatments. In 3 of the 4 replicatons it was
performed another evaluation to the production of DHPs (polymers by oxidative
dehydrogenation) utilizing suspension filtrate added with H2O2, H2O2 + peroxidase and
peroxidase. These new treatments were analyzed through polilignols production
utilizing infrared (IR) and nuclear magnetic resonance of the hydrogen (NMR H). The
suspension filtrate analysis of the 4th replication through ultraviolet (UV), IR, NMR 13C
and NMR H evidenced the production of extra cellular lignin. Of this, the largest
content was obtained in presence of sucrose as elicitor, followed by ANA and AJ. The
cells in suspension increased the cellular wall lignin content in all treatments in relation
to the control and the largest values were with the medium containing sucrose. DHPs
were also analyzed utilizing as mattress the MS medium added of the same elicitors
tested in the cellular suspension phase. For this, it was utilized as precursors the
following alcohols: coniferyl or sinapyl, H2O2 and peroxidase; amd the analyses were
done in RMN H and RMN 13C. The results showed DHPs synthesis of both coniferyl
alcohol (DHP1c, DHP2c and DHP4c) and sinapyl alcohol (DHP2s). Nevertheless, It
was not synthesized DHP in the treatment containing sucrose when the precursor was
the coniferyl alcohol. On the other hand, when the sinapyl alcohol was the precursor,
DHPs were only synthesized in the presence of ANA as elicitor. It was concluded that
sucrose is an appropriate elicitor for the lignin production in cells suspension both at
cellular and extra cellular level. However, this result was not observed in relation to
DHP production. NAA auxin had a better functionality in the DHP2c and DHP2s
formation. These results may be considered a progress in the lignification studies with
the use of E. urophylla cell suspension. Once all these questions were answered and
solved, it will be possible to develop E.urophylla suitable plants with better quality
forest products and able to cause smaller environmental impact in the industrial
processes. / Apesar dos avan?os tecnol?gicos, a compreens?o da forma??o estrutural da lignina
ainda ? alvo de in?meras investiga??es cient?ficas. Esta pesquisa foi realizada com calos
de Eucalyptus urophylla S.T. Blake para a produ??o de lignina. Os calos foram obtidos
a partir de explantes de segmentos caulinares desenvolvidos em meios de cultura
acrescidos de uma combina??o da citocinina TDZ e das auxinas ?cidos: 3-indolac?tico
(AIA), ?-naftalenoac?tico (ANA) e diclorofenoxiac?tico (2,4-D), nas formas isoladas e
conjugadas. Para a produ??o de c?lulas em suspens?o foram utilizados os calos
formados no tratamento contendo 20?M de AIA + 3?M de TDZ, ap?s 30 dias de cultivo
in vitro. Obtidas as c?lulas em suspens?o, a produ??o de lignina foi induzida
empregando-se quatro elicitores: ?cido jasm?nico (AJ), ANA, sacarose e testemunha
(sem o emprego de elicitores). O delineamento experimental utilizado foi o inteiramente
casualizado, 4 repeti??es e um Erlenmeyer contendo 125 ml de cultura de c?lulas em
suspens?o. O teste de Wiesner confirmou a presen?a de lignina, em todos os tratamentos
testados. Em 3 das 4 repeti??es foram realizados subtratamentos para a produ??o de
DHPs (pol?meros por desidrogena??o oxidativa) a partir do filtrado da suspens?o com
H2O2, H2O2 + peroxidase e peroxidase. A an?lise desses subtratamentos foi realizada
pela detec??o da produ??o de polilign?is atrav?s de raios infravermelho (IV) e
resson?ncia magn?tica nuclear do hidrog?nio (RMN H). O filtrado da suspens?o da
repeti??o 4 foi analisado por ultravioleta (UV), IV, RMN 13C e RMN H, sendo
constatada a presen?a de lignina extracelular, com o maior teor sendo observado na
presen?a do elicitor sacarose, seguido do ANA e AJ. As c?lulas em suspens?o
apresentaram aumento no teor de lignina na parede celular em todos os tratamentos em
rela??o ? testemunha e os maiores valores foram com o meio contendo sacarose. Foram
analisadas tamb?m as DHPs tendo como colch?o o meio de cultura MS acrescido dos
mesmos elicitores testados na fase de suspens?o celular. Para isto foram utilizados como
precursores os ?lcoois conifer?lico ou sinap?lico, H2O2 e peroxidase, com a lignina
analisada em RMN H e RMN 13C. Os resultados mostraram que houve s?ntese de DHPs
do ?lcool conifer?lico (DHP1c, DHP2c e DHP4c) e do ?lcool sinap?lico (DHP2s).
Porem quando se utilizou como precursor o ?lcool conifer?lico n?o foram sintetizadas
DHPs no tratamento contendo sacarose como elicitor. E, quando foi utilizado como
precursor o ?lcool sinap?lico, somente foram formadas DHPs na presen?a do elicitor
ANA. Concluiu-se, ent?o, que a sacarose apresentou-se como um elicitor adequado para
a produ??o de lignina nas c?lulas em suspens?o, tanto em n?vel celular quanto
extracelular. Entretanto, isto n?o foi observado em rela??o ? produ??o de DHP. A
auxina ANA teve funcionalidade maior na forma??o de DHP2c e DHP2s. Estes
resultados devem ser considerados como um avan?o nos estudos de lignifica??o com a
utiliza??o de c?lulas em suspens?o de E. urophylla. Quando esses questionamentos
forem identificados e solucionados ser? poss?vel o desenvolvimento de novos
indiv?duos desta esp?cie que conduzam ? produ??o de produtos florestais de melhor
qualidade, com menor impacto ambiental nos processos industriais.

Identiferoai:union.ndltd.org:IBICT/oai:localhost:jspui/1211
Date29 May 2009
CreatorsMonteiro, Maria Beatriz de Oliveira
ContributorsAbreu, Heber dos Santos, Carvalho, Ana Cristina Portugal Pinto de, Muniz, Graciela In?s Bolzon de, Latorraca, Jo?o Vicente de Figueiredo, Garcia, Rosilei Aparecida, Arruda, Rosani do Carmo de Oliveira
PublisherUniversidade Federal Rural do Rio de Janeiro, Programa de P?s-Gradua??o em Ci?ncias Ambientais e Florestais, UFRRJ, Brasil, Instituto de Florestas
Source SetsIBICT Brazilian ETDs
LanguagePortuguese
Detected LanguageEnglish
Typeinfo:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis
Formatapplication/pdf
Sourcereponame:Biblioteca Digital de Teses e Dissertações da UFRRJ, instname:Universidade Federal Rural do Rio de Janeiro, instacron:UFRRJ
Rightsinfo:eu-repo/semantics/openAccess
Relation7. REFER?NCIAS BIBLIOGR?FICAS ABREU, H. dos S. Bioss?ntese de Lignifica??o, UFRRJ, Itagua?, 63p., 1994. ABREU, H. S; CARVALHO, A. M.; MONTEIRO, M.B.O.; PEREIRA, R.P.W.; SILVA, H.R.; SOUZA, K.C.A.; AMPARADO, K.F.; CHALITA, D.B. M?todos de an?lise em qu?mica da madeira. S?rie T?cnica Floresta e Ambiente, p. 1-20, 2006. ABREU, H. S., NASCIMENTO, A. M. & MARIA, M. A. Lignin structure and wood properties, Wood and Fiber Science, v. 31, n. 4, 426-433, 1999. ABREU, H. S.; MA?DA, J.; LATORRACA, J. F.; PEREIRA, R. P. W.; MONTEIRO, M. B. O.; ABREU, F.; CARMO, J. Proposta de modifica??o da bioss?ntese da lignina como estrat?gia para corre??o de defeitos em madeiras. Silva Lusitana, V.11, n.2, p.217-225, 2003. ABREU, S.H. Determina??o do teor de lignina por espectroscopia no infrvermelho por transformada de Fourier para as madeiras de Lophantera lactescens, Gallesia gorazema, Peltogyne paniculata, Aspidosperma macrocarpum e A. polyneuron. Revista Universidade Rural, S?rie Ci?ncia da Vida. V.17, n.1, pp.45-49, 1995. ABREU, S.H.; LATORRACA, J. V. F.; PEREIRA, W. P. R.; MONTEIRO, M.B.O.; ABREU, F.A.; AMPARADO, K.F. A supamolecular proposal of lignin structure and its relation with the wood properties. Anais da Academia Brasileira de Ci?ncias, v. 81, n.1, 1-6, 2009. ADLER, E.; BJ?RKQUIST, J.; HAGGROTH, S. ?ber die Ursache der Farbreaktionen des Holzes. Acta Chemica Scandinavica, Copenhagen, Denmark, V.2, p.93-94, 1948. AGRIOS, G.N. Plant Pathology, Academic Press, San Diego, 635p. 1997. ALBARR?N, J. G.; VIELMA, M.; CONTRERAS, I. G. Cultivo in vitro de Swietenia macrophylla King.: estudio de condiciones ?ptimas para la regeneraci?n y transformaci?n gen?tica. Revista Forestal Venezolana, v. 41, n. 2, p. 111-118, 1997. ALBERSHEIM, P., DARVILL, A.G., O?NEILL, M.A., SCHOLS, H.A. & VORAGEN, A.G.J. A hypothesis: The same six polysaccharides are components of the primary cell walls of all higher plants. Editores J. VISSER & A.G.J. VORAGEN, Elsevier Science. p.47-55, 1996. 81 ALLINA, S. M; PRI-HADASH, A; THEILMANN, D. A; ELLIS, B. E; DOUGLAS, C. J. 4- Coumarate: coenzymeAligase in hybrid poplar. Plant Physiology. 116:743?54, 1998. ALVES, E.C.S.C.; XAVIER, A.; OTONI, W.C. Organog?nese de explante foliar de clones de Eucalyptus grandis x Eucalyptus urophylla. Pesquisa Agropecu?ria Brasileira, v.39, n.5, p.421-430, 2004. ANDRADE, W. F.; ALMEIDA, M.; GON?ALVES, A. N. Multiplica??o in vitro de Euclyptus grandis sob est?mulo com benzilaminopurina. Pesquisa Agropecu?ria Brasileira, v. 41, n. 12, p.1715-1719, 2006. ANTEROLA A.M. & LEWIS N.G. Trends in Lignin Modification - a Comprehensive Analysis of the Effects of Genetics Manipulations-Mutations on Lignification and Vascular Integrity. Phytochemistry, v.61, p.221?294, 2002. ANTEROLA AM, JEON J-H, DAVIN LB, LEWIS NG. Transcriptional control of monolignol biosynthesis in Pinus taeda. Factors affecting monolignol ratios and carbon allocation in phenylpropanoid metabolism. Journal Biology Chemistry. 277:18272?80, 2002. ARGYROPOUPOS, D.S.; MENACHEM, S.B. Lignin. Adv. Bloch Enc Biotech, v. 57, p. 127-158, 1997. BARBETA, C.M. & MAGINI, M.R. Espectros eletromagn?ticos na regi?o do infravermelho: utiliza??o na caracteriza??o de novos materiais. Anais do X Encontro Latino Americano de Inicia??o Cient?fica e VI Encontro Latino Americano de P?s- Gradua??o ? Universidade do Vale do Para?ba. 2007. BARRUETO CID, L.P.; GOMES, A.C.M.; COSTA, S.B.R; TEIXEIRA,J.B. Micropropagation of Miconia sp, a woody Melastomataceae from Brazil, using thidiazuron as plant growth regulator. Revista Brasileira de Fisiologia Vegetal, n.9, pp.21-25, 1997. BARRUETO CID, L.P.; ILLG, R.D.; PIDRABUENA,A.F. Regeneration of garlic plants (Allium sativum L., cv. ? Chonan?) via cell culture in liquid medium. In Vitro Cell Developmental Biology, v.30, pp.150-155, 1994. BARRUETO CID, L.P.; MACHADO, A.C.M.G; CARVALHEIRA,S.B.R.C.; BRASILERIO, A.N.M. Plant Regeneration from seedling explants of Eucalyptus garndis x Eucalyptus urophylla. Plant Cell, Tissue and Organ Culture, v. 56, pp.17-23, 1999. BATE NJ, ORR J, NI W, MEROMI A, NADLER- HASSAR T. Quantitative relationship between phenylalanine ammonia-lyase levels and phenylpropanoid accumulation in 82 transgenic tobacco identifies a rate-determining step in natural product synthesis. Proceedings of the National Academy of Sciences. v.91, p.7608?12, 1994. BERNARDS, M. A.; LEWIS, N. G. The macromolecular aromatic domain in suberized tissue: a changing paradigm. Phytochemistry. v.47, n.6, pp.915-33, 1998. BHOJWANI, S. S.; RAZDAN, M. K. Plant Tissue Culture: Theory and Practice. Amsterdam: Elsevier, 767p., 1996. BIDLACK, J.; MALONE, M. & BENSON, R. Molecular structure and component integration of secondary cell walls in plants. Proceedings of the Oklahoma Academy of Science. v.72, p.51-56, 1992. BOATRIGHT, J; NEGRE, F; CHEN, X; KISH, C. M; WOOD, B; PEEL, G; ORLOVA, I; GANG, D; RHODES, D; DUDAREVA, N. Understanding in Vivo Benzenoid Metabolism in Petunia Petal Tissue Plant Physiology. v.135, pp.1993-2011, 2004. BOERJAN, W; RALPH, J; BAUCHER, M. Lignin biosynthesis. Annual Review Plant Biology, v.54, p.519?546, 2003. BOHM H, RINK E. BETALAINES. In: Constabel F, Vasil I, editors. Cell Culture and Somatic Cell Genetics of Plants, vol. 5. New York: Academic Press, pp. 449?63, 1988. BOR?M, A . Melhoramento de Plantas. Editora: UFV, 500p. 2001, BOSISIO, B.M. Avalia??o de Tend?ncias Evolutivas Vegetais Via Quantifica??o Lign?nica. Disserta??o de mestrado. FIOCRUZ, Brasil, 148 p., 1996. BOTTA, B; SILVESTRINI, A; VITALLI, A & MONACHE, GD. Cultura de tecidos vegetais: doze anos de experi?ncia. In: YUNES, R.A.; CALIXTO, J.B. (Eds.). Plantas medicinais sob a ?tica da moderna qu?mica medicinal. Cape?o: Argos, p.354-79, 2001. BOUDET, A. & CHABANNES, M. Gains achieved by molecular approaches in the area of lignification Pure Applied Chemistry, v.73, n. 3, p. 561?566, 2001. BOUDET A. M. Towards an understanding of the supramolecular organisation of the lignified wall. In: Rose JKC (ed) The Plant Cell Wall, 1st edn. Blackwell Publishing, Oxford, UK, 2003. BOULAY, M. P.; GUPTA, P.K.; KROGSTRUP, P. & DURZAN, D. J. Development of somatic embryos from cell suspension cultures of Norway spruce (Picea abies Karst.). Plant Cell Report, v.7, pp. 134-137, 1988. 83 BROWN, R. M. Jr.; SAXENA, I. M.; KUDLICKA, K. Cellulose biosynthesis in higher plants. Trends Plant Scienc. v.1, p.149-156, 1996. BRUCE, R.J. & WEST, C.A. Elicitation of lignin biosynthesis and isoperoxidase activity by pectic fragments in suspension cultures of Castor bean. Plant Physiology, v. 91, p.889- 897,1989. BUCHANAN, B.; GRUISSEM, W.; JONES, R. Biochemistry and Molecular Biology of Plants. American Society of Plants Physiologists. p.1367, 2000. BURLAT, V.; KWON, M.; DAVIN, L. B. & LEWIS, N. G. Dirigent proteins and dirigent sites in lignifying tissues. Plant Physiology, v.6, p. 803-1042, 2001. BUSAM, G.; JUNGHANNS, K.T.; KNEUSEL, R.E.; KASSEMEYER, H.H.; MATERN, U. Characterization and expression of caffeoyl-coenzime a 3-Omethyltransferase proposed for the induce resistance response of Vitis vinifera L. Plant Physiology, v. 115, p.1039-1048, 1997a. BUSAM, G.; KASSEMEYER, H.H.; MATERN, U. Differential expression of chitinases in Vitis vinifera L. Responding to systemic acquired resistance activators or fungal challenge. Plant Physiology, v.115, p.1029-1038, 1997b. CALDAS, L.S. Micropropaga??o de Plantas do Cerrado. Anais do Congresso Nacional de Bot?nica, 47, 1996, Nova Friburgo. Nova Friburgo, RJ, p.22, 1996. CALDAS, L.S.; HARIDASSAN, P.; FERREIRA, M. E. Cultura de Tecidos e Transforma??o Gen?tica de Plantas. Bras?lia: EMBRAPA-SPI, v.1, 509p. 1998. CARVALHO, E.C.S. Antioxidantes, Reguladores de Crescimento e Estresse T?rmico na embriog?nese Som?tica de Eucalyptus spp. Tese de Doutorado. UFV. 114p., 2007. CARVALHO, J.M.F.C. de. T?cnicas de Micropropaga??o. Campina Grande: Embrapa Algod?o, 39p. (Embrapa Algod?o. Documentos, 64), 1999. CASSAB, G. I. Plant cell wall proteins. Annual Review of Plant Physiology and Plant Molecular Biology, v.49, p.281-309, 1998. 84 CASSAB, G. I. & VARNER, J. E. Cell wall proteins. Annual Review Plant Physiology Plant Molecular Biology, v.49, p.281-309, 1988. CELED?N, P. A. F.; KOBAYASHI, A. K.; VIEIRA, L. G. E. Utiliza??o de nutrientes por c?lulas de algodoeiro cultivadas em suspens?o. Scientia Agr?cola. v.57, n.3. p. 431-437, 2000. CHEN, F; KOTA, P; BLOUNT, J. W; DIXON, R. A. Chemical synthesis of caffeoyl and 5-OH coniferyl aldehydes and alcohols and determination of lignin O-methyltransferase activities in dicot and monocot species. Phytochemistry, V.58, p.1035?42, 2001. CHRISTIANSON, M.L.; WARNICK, D.A. Organogenesis in vitro as a developmental process. Hort Science, v.23, 515-519, 1988. COENEN, C.; LOMAX, T. L. Auxin-cytokinin interactions in higher plants: old problems and new tools. Trends in Plant Science, v.2, n.9, p.351-356, 1997. COSGROVE, D. J. Growth of the plant cell wall. Nature Review Molecular Cell Biology. v.6, p.850?61, 2005. COSTA, M. E. L. ; RAPOSO, S. Reactores para cultura de c?lulas vegetais. Edi??es T?cnicas, p. 15, 2004 CUTTER, E. G. Anatomia vegetal ? Parte I: C?lulas e Tecidos. 2? ed. S?o Paulo: Roca, 308 p., 1986. DARLEY, C.P.; FORRESTER, A. M. AND MCQUEEN-MASON, S. J.. The molecular basis of plant cell wall extension. Plant Molecular Biology, v.47, p.179?195, 2001. DAVIES, P. J. The Plant Hormones: Their Nature, Occurrence, and Functions. In: DAVIES, P. J. (Ed.) Plant Hormones: Physiology, Biochemistry and Molecular Biology. 2.ed. Estados Unidos, Kluwer Academic Publishers, Cap.1, p.1-12, 1995. DAVIES, P.J. Plant Hormones: Physiology, Biochemistry and Molecular Biology (Dordrecht, The Netherlands: Kluwer Academic Publishers), 1995. DAVIN, L. B. E LEWIS, N. G. Phenholic metabolism in plants, Plenum Press, New York, p.325. 1992. DAVIN, L. B.; LEWIS, N. G. Lignin and lignan biochemical pathways in plants: an unprecedented discovery in phenolic coupling. Ann. Acad Bras Cienc Suppl v.67, p.363? 378, 1995. 85 DAVIN, L. B.; WANG, H. B.; CROWELL, A. L.; BEDGAR, D. L.; MARTIN, D. M.; SARKANEN, S.; LEWIS, N. G. Stereoselectiv bimolecular phenoxy radical coupling by an auxiliary (dirigent) protein without an active center. Science, v.275, p.362-366, 1997. DAVIN, L., B. & LEWIS, N.G. Dirigent proteins and dirigent sites explain the mystery of specificity of radical precursor coupling in lignan and lignin biosynthesis, Plant Physiology. v.123, p.453-462, 2000. DAVIN B.L., LEWIS G. N. Lignin primary structures and dirigent sites. Current Opinion Biotechnology, v.16, n.4, pp.407-15, 2005. DEUS, N.B.S., ZENK, M.H. Exploitation of plant cells for the production of alkaloids in Catharanthus roseus cell suspension cultures. Planta Med, n.50, p.427?31. 1982 DEVOTO, A.; TURNER, J. G. Regulation of Jasmonate-mediated Plant Responses in Arabidopsis. Annals of Botany. v.92, pp. 329-337, 2003. DICOSMO F, TOWERS GHN. Stress and secondary metabolism in cultured plant cells. In: Timmerman BN, Steelink FA, Loewus FA, editors. Recent advances in phytochemistry, vol. 18. New York: Plenum, pp. 97?175, 1984. DICOSMOS, F.; MISAWA, M. Plant cell and tissue culture: alternative for metabolite production, In: Biotechnology Advabces. Pergamon: Gr? Bretanha, v.13, n.3, p.425-453, 1995. DIXON, R. A; CHEN, F; GUO, D; PARVATHI, K. The biosynthesis of monolignols: a ?metabolic grid,? or independent pathways to guaiacyl and syringyl units? Phytochemistry, v.57, pp.1069?84, 2001. DONALDSON, LA. Lignification and lignin topochemistry: an ultrastructural view. Phytochemistry, v.57, pp.859?873, 2001 DURZAN, D. J. & GUPTA, P. K. Somatic embryogenesis and polyembryogenesis in Douglas-fir cell suspensi?n cultures. Plant Scienc, v.52, pp. 199-235, 1987. ERTOLA, R.J.; GIULIETTI, A. M.; CASTILLO, F. J. Design, formulation, and optimization of media. In: Bioreactor System Design. Marcel Dekker: Nova Iorque, p. 109-121, 1995, 86 ESAU, K. Anatomia das plantas com sementes. Editora Edgard Blucher, 1976. FENGEL, D. E WEGENER, G. Wood, chemistry, ultrastructure, reaction, Berlin 1 ed. Walter de Gruyter, p. 66.1984. FLOH, E.I.S.; HANDRO, W. Variation of histological patterns in tobacco callus during sucessive subcultures. Canadian Journal of Botany, v.63, p.1794-1800, 1985. FOWLER, M. W. Plant cell culture: natural products and industrial application. In: Biotechnology of Higher Plants. Intercept: Reino Unido, p.107-158, 1988. FRANKE, R.; HEMM, M. R.; DENAULT, J. W.; RUEGGER, M. O.; HUMPHREYS, J. M.; CHAPPLE, C. Changes in secondary metabolism and deposition of an unusual lignin in the ref8 mutant of Arabidopsis. The Plant Journal, V.30, n.1, p.47-59, 2002. FREUDENBERG, K. Biosynthesis and constitution of lignin. Nature, v.183, p.1152-1155, 1959. FREUDENBERG K, NEISH AC, ed. Constitution and Biosynthesis of Lignin. Berlin: Springer-Verlag. 129 pp. 1968. FRY, S.C. Polysaccharide-modifying enzymes in the plant cell wall. Annual Review of Plant Physiology and Plant Molecular Biology, v.46, p.497-520, 1995. F?RDEN B. VAN, HUMBURG, A.; FUSS, E. Influence of methyl jasmonate on podophyllotoxin and 6-methoxypodophyllotoxin accumulation in Linum album cell suspension cultures. Plant Cell Report, v.24, pp. 312?317, 2005. GAMBORG, O.L.; SHYLUK, J.P. Nutrition, media, and characteristics of plant cell and tissue cultures. Eds. THORPE, T.A. Plant Tissue culture: methods and applications in agriculture, Academic Press, p. 21-44, 1981. GAMBORG, O.L. Callus and cell culture. In: WETTER, L.R.; CONSTABEL, F. Culture methods. Ottawa:Saskatoom, p.1-9. 1982. GANG, D. R.; COSTA, M. A.; FUJITA, M.; DINKOVA-KOSTOVA, A. T.; WANG H-B, BURLAT, V.; MARTIN, W.; SARKANEN, S.; DAVIN, L. B.; LEWIS, N. G. Regiochemical control of monolignol radical coupling: a new paradigm for lignin and lignan biosynthesis. Chem Biol, v.6, p.143?151, 1999. 87 GARTNER, B. L. Plant Stems: Physiology and Functional Morphology. Academic Press Inc..427 p., 1995. GASSER, R., KERN, H.; D?FAGO G. Resistance of Tobacco to Thielaviopsis basicola under Tissue Culture Conditions and Increased Susceptibility after Transformation with Agrobacterium tumefaciens T-DNA. Journal of Phytopathology. v.123, n.2, pp. 105 ? 114, 2008. GEORGE, E.F. Plant propagation by tissue culture - Part 1: The technology. 2nd ed. Edington, England: Exegetics, v.2. 574 p. 1996. GEORGE, E.F. Plant propagation by tissue culture - The technology. 2nd ed. Edington, England: Exegetics, v.1. 575 p. 1993. GOMIDE, J. L.; COLODETTE, J. L. Qualidade da Madeira. In: Aluizio Bor?m de Oliveira. (Org.). Biotecnologia Florestal. Vi?osa-MG: UFV, v. ?nico, p. 25-54. 2007. GOTTLIEB, O. R. BORIN, R. M. B. E BOS?SIO, B. MLignification: an evolutionary perspective, An. Acd. bras. Ci., v. 67 (Supl 3) p.355-361, 1995. GOTTLIEB, O. R. The role of oxygen in phytochemical evolution towards diversity, Phytochemistry, v. 28, n. 10, p.2545-2558, 1989. GOUJON, T; SIBOUT, R; EUDES, A; MACKAY, J; JOUANIN, L. Genes involved in the biosynthesis of lignin precursors in Arabidopsis thaliana, Plant Physiol Biochem, V.41, p.677?687, 2003. GRA?A, M. E. C.; FILHO, A. N. K.; MEDEIROS, A. C. S.; TAVARES, F. R. Efeitos das citocininas, benzilamino purina e thidiazuron, na multiplica??o in vitro de brota??es de Eucalyptus dunnii Maid. Boletim Pesquisa Florestal. n.43, p.107-112, 2001. GUERRA, M.P.; TORRES, A.C.; TEIXEIRA, J. B. In: TORRES, A.C.; CALDAS, L.E.; BUSSO, J.A. (Ed.). 70 Cultura de tecidos e transforma??o gen?tica de plantas. Bras?lia: Embrapa, SPI; Embrapa, CNPH. v.2, p. 533-568, 2001. GUO, D; CHEN, F; INOUE, K; BLOUNT, J. W; DIXON, R. A. Downregulation of caffeic acid 3-O-methyltransferase and caffeoyl CoA 3-O-methyltransferase in transgenic alfalfa: impacts on lignin structure and implications for the biosynthesis of G and S lignin. Plant Cell, V.13, p.73?88, 2001. 88 GUPTA, P. K.; DURZAN, D. J. & FINKLE, B. J. Somatic polyembryogenesis in embryigenic cell masses of Picea abies (Norway spruce) and Pinus taeda (Loblolly pine) alter thawing from liquid nitrogen. Canada Journal Forest Research, v.17, pp1130-1134, 1987. HAKMAN, I & von ARNOLD, S. Somatic embryogenesis and plant regeneration from suspension cultures of Picea glauca (White spruce). Physiology Plant, v.72, pp. 579,587, 1988. HAKMAN, I.; FOWKE, L. C.; von ARNOLD, S. & ERIKSSON, T. The development of somatic embryos in tissue cultures initiated from immature embryos of Picea abies (Norway spruce). Plant Scienc, v. 38, pp.53-59, 1985. HAMMERSCHMIDT, R.; KUC, J. Lignification as a mechanism for induced systemic resistance in cucumber. Physiol. Plant Pathol., v. 20, p.61-71, 1982. HANDRO, W.; FLOH, E.I.S. A organiza??o de um laborat?rio de cultura de tecidos de plantas. In: TORRES, A.C.; CALDAS, L.S. T?cnicas e aplica??es da cultura de tecidos de plantas. Bras?lia: ABCTP/EMBRAPA-CNPH, p.29-36, 1990. HARDING, S.A; LESHKEVICH, J; CHIANG, V. L; TSAI, C. J. Differential substrate inhibition couples kinetically distinct 4- coumarate: coenzyme A ligases with spatially distinct metabolic roles in quaking aspen. Plant Physiology, V.128, p.428?38, 2002. HATFIELD, R. & VERMERRIS, W. Lignin formation in plants. The dilemma of linkage specificity. Plant Physiol, v.126, p.1351-1357, 2001. HIGUCHI, T. Biochemistry and molecular biology of wood. Springer, 506p., 1997. HIGUCHI, T. Lignin biochemistry: biosynthesis and biodegradation. Wood Sci. Technol. 24, 23-63, 1990. HIGUCHI, T. Lignin structure and morphological distribution in plant cell walls. In: KIRK, T. K; HIGUCHI, T.; CHANG, H. (Ed). Lignin biodegradetion: microbiology, chemistry and potential applications. Boca Raton, v. I, p. 02. 1980. HIGUCHI, T., ITO, T., HIBINO, T. E SHIBATA, D. Red-brow color of lignified tissues of transgenic plants with antisense CAD gene: Wine-red lignin from coniferyl aldehyde, Journal of Biotecnology, n. 37, p.151-158, 1994. 89 HU, W. J; KAWAOKA, A; TSAI, C. J; LUNG, J; OSAKABE, K. Compartmentalized expression of two structurally and functionally distinct 4-coumarate: CoA ligase genes in aspen Populus tremuloides. Proc. Natl. Acad. Sci. USA, V.95, p.5407?12, 1998. HUMPHREYS, J. M; HEMM, M. R; CHAPPLE, C. New routes for lignin biosynthesis defined by biochemical characterization of recombinant ferulate 5-hydroxylase, a multifunctional cytochrome P450- dependent monooxygenase. Proc. Natl. Acad. Sci., V.96, p.10045?50, 1999. HUMPHREYS, J. M. & CHAPPLE, C. Rewriting the lignin roadmap. Current Opinion in Plant Biology, v.5, p.224-229, 2002. HUETTMAN, C.A.; PREECE, J.E. Thidiazuron: a potent cytokinin for woody plant tissue culture. Plant Cell Tissue Organ Culture, n.33, pp.105?119, 1993. JAMAL, S. Mass propagation of Eucalyptus tereticornis. Msc Thesis, Dept. of Bot Univ. of Peshawar, Pakistan, 1985. JEFFRIES, T. W. Biodegradation of lignin and hemicellulose. Biochemistry of Microbial Degradation, p.233-277, 1994. JONES, L.; ENNOS, A R.; TURNER, S. R. Cloning and characterization of irregular xylem4 (irx4): a severely lignin deficient mutant of Arabidopsis. Plant J. v.26, p.205?216, 2001. JOSELAU, J.P. & RUEL, K. Study of lignification by noninvasive techniques in growing maize internodes. Plant Physiology. v. 114, pp.1123-1133, 1997. JOY, I. R. W.; THORPE, T. A. Shoot morphogenesis: structure, physiology,biochemistry and molecular biology. In:Soh, W.Y.; BHOJWANIN. S. S. (Eds.). Morphogenesis in Plant Tissue Cultures. London: Kluwer Academic Publishers. pp. 171-214, 1999. KAJITA S, KATAYAMA Y, OMOI S. Alterations in the biosynthesis of lignin in transgenic plants with chimeric genes for 4-coumarate:CoA ligase. Plant Cell Physiol. V.37, p.957-651, 1996. KAJITA, S.; HISHIYAMA, S.; TOMIMURA, Y.; KATAYAMA, Y.; OMORI S. Structural characterization of modified lignin in transgenic tobacco plants in which the activity of 4-coumarate: Coenzyme A ligase is depressed. Plant Physiology, V.114, p.871- 791, 1997. 90 KAVALIER, A. The effects of methyl jasmonate on the anthocyanin content and growth rates of the Wisconsin fast plants Brassica rapa. Research preformed at the College of Charleston, 2000. KELLER, B. Structural Cell Wall Proteins , Plant Physiolol. v.101, p.1127-1130, 1993. KERBAUY, G.B. Compet?ncia e determina??o celular em cultura de c?lulas e tecidos de plantas. In: TORRES, A.C.; CALDAS, L.E.; BUSSO, J.A. (Ed.). 70 Cultura de tecidos e transforma??o gen?tica de plantas. Bras?lia: Embrapa, SPI; Embrapa, CNPH. v.2, p.519- 531, 1999. KETCHUM, R. E. B.; GIBSON, D. M.; GALLO, G. Media optimization for maximum biomass production in cell cultures of pacific yew. Plant Cell, Tissue and Organ Culture, v. 42, p. 185-193, 1995. KISHIMOTO, T.; URAKI, Y.; UBUKATA, M. Chemical synthesis of ?-O-4 type artificial lignin. Organic and Biomolecular Chemistry. n.4, pp.1343?1347., 2006. KIEDROWSKI, S; KAWALLECK, P; HAHLBROCK, K; SOMSSICH, I. E; DANGL, J. L. Rapid activation of a novel plant defense gene is strictly dependent on the Arabidopsis RPM1 disease resistance locus. Embo Journal , v.11, p.4677?4684, 1992. KIERAN, P. M.; MACLOUGHLIN, P. F.; MALNE, D. M. Plant cell suspension cultures: some engineering considerations. Journal of Biotechnology, v. 59, p. 39-52, 1997. KITTO, S. L.; JANICK, J. Production of synthetic seeds by encapsulating asexual embryos of carrot. Journal of the American Society for Horticultural Science, v. 110, n.2, p. 277- 282, 1985. KLOCK, U. Propriedades qu?micas da Madeira. Apostila do Curso de Tecnologia de Madeira/Transforma??o da Madeira. UFPR, Curitiba ? PR, 62p., 1994. KOZAY, T.; KUBOTA, C.; JEONG, B. R. Environmental control for the large-scale production of plants through in vitro techniques. Plant Cell, Tissue and Organ Culture, Dordrecht, v. 51, p. 49-56, 1997. KRAUS, J. E. A c?lula Vegetal. In: GLORIA, Beatriz A. da.; GUERREIRO, Sandra Maria C. Anatomia Vegetal. Vi?osa: UFV, 2003. KUNIEDA, M.K.; KERBAUY, G.B. Forma??o de gemas em ra?zes advent?cias de couveflor cultivadas in vitro. Revista Brasileira de Bot?nica, S?o Paulo, n.9, p.231?238, 1986. 91 LAMEIRA, O. A.; SAB?, R. T.; PINTO, PEREIRA, J. E. B.; AMORIM, A. C. L. ; LUZ, Jos? Magno Queiroz . Embriog?nese som?tica de Pilocarpus microphyllus (Jaborandi). Acta Horticulturae, Leuven, v. 569, p. 271-274, 2002. LANDA, F.S.L. et al. Indu??o in vitro de calos em explantes foliares de pequizeiro (Caryocar brasiliense Camb.). Ci?ncia e Agrotecnologia, Lavras, v.24 (Edi??o Especial), p.56-63, 2000. LEE, D.; MEYER, K.; CHAPPLE, C.; DOUGLAS, C. J. Down-regulation of 4- coumarate:CoA ligase (4CL) in Arabidopsis: effect on lignin composition and implications for the control of monolignol biosynthesis. Plant Cell. V.9, p.1985-98, 1997. LESNEY, M. S. Growth responses and lignin production in cell suspension of Pinus elliottii elicited by chitin, chitosan or mycelium of Cronartium quercum f.sp. fusiforme. Plant Cell, Tissue and Organ Culture. n.19, pp. 23?31, 1989. LEWIS, N. G. & SARKANEN, S. Lignin and lignan biosynthesis, Washington:American Chemical Society, , DC.p.436.1998. LEWIS, N. G. & YAMAMOTO, E. Lignin: occurrence, biogenesis and biodegradation. Annu. Rev. Plant Mol. Biol., V.41, p.455-496, 1998. LEWIS, N. G.; DAVIN, L. B.; SARKANEN, S. Lignin and lignan biosynthesis: distinctions and reconciliations. In NG Lewis, S Sarkanen, eds, Lignin and Lignan Biosynthesis, v.697. ACS Symposium Series, Washington, DC, pp 1?27, 1998. LI, L.; POPKO, J.L.;, UMEZAWA, T.; CHIANG, V.L. 5-Hydroxyconiferyl aldehyde modulates enzymatic methylation for syringyl monolignol formation, a new view of monolignol biosynthesis in Angiosperms. J. Biol. Chem. V.275, p.6537-6545, 2000. LIECHTI, R.; FARMER, E. E. The Jasmonate Pathway. Science Vol. 296. no. 5573, pp. 1649 - 1650 LIN, S. Y. & DENCE, C.W. Methods in lignin chemistry, Berlin: Springer-Verlag, p. 578 1992. LOPES, W.A. & FASCIO, M. Esquema para interpreta??o de espectros de subst?ncias org?nicas na regi?o do infravermelho. Qu?mica Nova, v. 27, n.4, pp.670-673, 2004. LU, C.Y. Thenuse of thidiazuron in tissue culture. In Vitro Cell Development Biology, v.29, pp.92-96, 1993. 92 MANTELL SH, SMITH H. Cultural factors that influence secondary metabolite accumulation in plant cell and tissue cultures. In: Mantell SH, Smith H, editors. Plant Biotechnology. Cambridge: Cambridge Univ. Press, pp. 75?108, 1984. MARIA, M. A., ABREU., H. S. & REIS, J. L. Dual oxidation ways toward lignin evolution, Floresta e Ambiente, n. 1, v. 8, p.207- 210, 2001. MATSUMOTO, K. Cultura de c?lulas em suspens?o ? focalizando a bananeira. Boletim de Pesquisa e Desenvolvimento, p.126, 2006. McCANN, M. C. & ROBERTS, K. Architecture of the primary cell wall. In C. W. Lloyd (ed). The Cytoskeletal Basis of plant Growth and Form. Academic Press, London, pp. 109-129, 1991. MCCOWN, D.D. & SELLMER, J.C. IN: BONGA, J.M.; & DURZAN, D.J. (Ed.) Cell and tissue culture in forestry 1, 4-14, 1987. MESSNER, B. & BOLL, M. Extracellular peroxidases of suspension culture cells of spruce (Picea abies). Fungal elicitor-induced inactivation (in preparation). Plant Cell Tissue Organ Culture. v. 36, n.1, pp. 81-90, 1994 MEYER HJ, VAN STADEN J. The in vitro production of an anthocyanin from callus cultures of Oxalis linearis. Plant Cell Tissue Organ Culture , n.40, p.55?8, 1995. MICIC, M.; ORBULESCU, J.; RADOTIC, K.; JEREMIC, M.; SUI, G. ZHENG Y.; LEBLANC, R. M. ZL-DHP lignin model compound at the air ? water interface. Biophysical Chemistry, V.99, p.55-62, 2002. MOK MC, GABELMAN WH, SKOOG F. Carotenoid synthesis in tissue cultures of Daucus carota. Journal of the American Society for Horticultural Science , n.101, p.442?9, 1976. MOK, D. W. S.; MOK, M. C.; ARMSTRONG, J. Cytokinin activity of N-phenyl-N?-1,2,3- Thidiazol-5-yl urea and its effect on cytokinin autonomy in callus cultures of Phaseoulus. Plant Physiology. V.65, n.6, p. 24, 1980. MOK, M. C.; MOK, D. W. S.; ARMSTRONG, D. J.; SHUDO, K.; ISOGAI, Y.; OKAMOTO. Cytokinin activity of N- phenyl-N?-1,2,3-thiadiazol-5-ylurea (Thidiazuron). Phytochemistry, v. 21, n. 7, p. 1509-1511, 1982. 93 MONTEIRO, M. B. O. Lignina e Tanino como Estrat?gia de Defesa em ?rvores. Monografia, UFRRJ, Seop?dica, p. ,2002 MONTEIRO, M. B. O. Modula??o do processo de lignifica??o por aplica??o de ?cido jasm?nico e 2,4-diclorofenoxiac?tico em Eucalyptus urophylla S. T. Blake. Disserta??o de Mestrado, UFRRJ, Serop?dica, p.77, 2005. MONTEIRO, M.B.O.; PEREIRA, R.P.W.; ABREU, H. S.;. Bioqu?mica da lignifica??o de c?lulas xilem?ticas. Floresta e Ambiente, v. 11, n. 2, p. 48-57, 2004. MORALES, C. F. G.; LOMBARDI, S. R. B.; SOARES, P. F.; FORTES, G. R. L. Efeito do BAP e TDZ na calog?nese e organog?nese em intern?dios de macieira cv. Gala RW1. Revista Brasileira de Agroci?ncia, v. 5, n. 3, p. 174-177, 1999. MURASHIGE, T.; SKOOG, F. A revised medium for rapid growth and bioassays with tobacco tissue cultures. Physiologia Plantarum, v.15, p.473-497, 1962. MURTHY, B.N.S; MURCH, S.J.; SAXENA, P.K. Thidiazuron: a potent regulator of in vitro plant morphogenesis. In Vitro Cellular and Developmental Biology-Plant, v.34, p.267-275, 1998. NAIR, R. B; XIA, Q; KARTHA, C. J; KURYLO, E; HIRJI, R. N; DATLA, R; SELVARAJ, G. Arabidopsis CYP98A3 mediating aromatic 3-hydroxylation. Developmental regulation of the gene, and expression in yeast. Plant Physiology, V.130, p.210?20, 2002. NEGREL, J., POLLET, B., LAPIERRE, C. Ether-linked ferulic acid amides in natural and wound periderms of potato tuber. Phytochemisty,, v.43, p.1195 1199, 1996. NOSE. M., BERNARDS, M. A., FURLAN, M, ZAJICEK, J. EBERHARDT, T. L.; LEWIS, N.G. Towards the specification of consecutive steps in macromolecular lignin assembly. Phytochemistry, v.39, n.1, pp.71-79, 1995. NU?EZ-FALENIUS, H.G.; OCHOA-ALEJO, N. Effect of phenylalanine and phenylpropanoids on the accumulation of capsaicinoids and lignin in cell cultures of chili pepper (Capsicum annuum L.). In Vitro Cell Development Biological-Plant, v.41, p.801? 805, 2005. OLIVEIRA, G.M.R.; VIEIRA, I.M.S.; BARBOSA, W.C.; SERRA, A;G.P.; SOUZA, D.M.G.; MORAES, M. Indu??o de calog?nese em segmentos radiculares de copa?ba (Copaifera sp). 2006. 94 OKSMAN-CALDENTEY, K.; INZ?, D. Plant cell factories in the post-genomic era: new ways to produce designer secondary metabolites. Trends in Plant Science, v.9, n.9, p.433- 440, 2004. OSAKABE, K; TSAO, C. C; LI, L; POPKO, J. L; UMEZAWA. T. Coniferyl aldehyde 5- hydroxylation and methylation direct syringyl lignin biosynthesis in angiosperms. Proc. Natl. Acad. Sci. USA, V.96, p.8955?60, 1999. PANDA, A. K.; SAROJ, M.; BISARIA, V. S. Alkaloid production by plant cell suspension cultures of Holarrhena antidysenterica: I. Effect of major nutrients. Biotechnology and Bioengineering, v. 39, p. 1043-1051, 1992. PARVATHI, K; CHEN, F; GUO, D; BLOUNT, J. W; DIXON, R. A. Substrate preferences of O-methyltransferases in alfalfa suggest new pathways for 3-O-methylation of monolignols. Plant J. 25:193?202, 2001. PASQUAL, M. Cultura de tecidos vegetais: tecnologia e aplica??es. Lavras: Ufla, 92p. 2001b. PASQUAL, M. Textos acad?micos: meios de cultura. Lavras: FAEPE/UFLA, 127p., 2001a. PASQUAL, M.; CARVALHO, G.R.; HOFFMANN, A.; RAMOS, J.D. Aplica??es no melhoramento gen?tico de plantas. Lavras, Brasil, 1998. PEREIRA, J. E. S. & FORTES, G. R. L. Protocolo para produ??o de material propagativo de batata em meio l?quido. Pesquisa Agropecu?ria Brasileira, v. 38, n. 9, p. 1035-1043, 2003. PEREIRA, J. L. P. Proteoma comparativo de xilema de Eucalyptus grandis e Eucalyptus globulus. Disserta??o de Mestrado, UCB., p.100, 2007. PEREIRA, R. P. W.; MONTEIRO, M. B. O. ABREU, ABREU, H. S. ; F. A. Forma??o de lignina n?o tradicional por dois caminhos (T?cnica de transgenia e indu??o por oxig?nio) para defesa de plantas. In: Forest 2000 - Sexto Congresso e Esposi??o Internacional sobre Florestas, Porto Seguro. Anais do Congresso Forest, v. 1. p. 404-406, 2000. PEREIRA, R. P. W. Atenua??o do Processo de Lignifica??o de Eucalyptus grandis (Hill ex Maiden) por GA3 BAP. Disserta??o de Mestrado , UFRRJ, Serop?dica, p.90, 2005. P?REZ, J.; MU?OZ-DORADO,; J.; DE LA RUBIA, T.; MART?NEZ, J. Biodegradation and biological treatments of cellulose, hemicellulose and lignin: na overview. Int. Microbiology, v.5, p. 53-63, 2002. 95 PIERIK, R. L. M. In vitro culture of higher plants. 4.ed. Netherlands: Kluwer Academic Publishers, 348 p. 1997. PIERIK, R.L.M. In vitro culture of higher plants. Boston:Martinus Nijhoff Publishers, 1987. PETERSEN, R. Z. Biotransforma??o de terpen?ides por culturas de c?lulas vegetais e fungos filamentosos. Tese de Doutorado.UFRS. 208p., 2006. PINCON, G.; MAURY, S.; HOFFMANN, L.; GEOFFROY, P.; LAPIERRE, C.; POLLET, B.; LEGRAND, M. Repression of O-methyltransferase genes in transgenic tobacco affects lignin synthesis and plant growth. Phytochemistry, V.57, p.1167?1176, 2001. PIQUEMAL J., LAPIERRE C., MYTON K., O'CONNELL A., SCHUCH W., GRIMAPETTENATI J. AND BOUDET A.M., Down regulation of cinnamoyl CoA reductase induces significant changes of lignin profiles in transgenic tobacco plants. Plant J. V.13, p.71?83, 1998. PIQUERAS, A.; DEBERGH, P. C. Morphogenesis in micropagation. In:Soh, W.Y.; BHOJWANIN. S. S. (Eds.). Morphogenesis in Plant Tissue Cultures. London: Kluwer Academic Publishers. P. 443-462, 1999. PRETSCH, E., AFFOLTER, C., BUHLMANN, P. , AFFOLTER, C. Structure determination of organic compounds: Tables of Spectral Data,3rd ed. Springer Verlag, pp. 421. 2000. RAES, J; ROHDE, A; CHRISTENSEN, J. H; VAN DE PEER, Y; BOERJAN, W. Genome-Wide Characterization of the Lignification Toolbox in Arabidopsis. Plant Physiology, v.133, n.3, p.1051-1071, 2003. RAJENDRAN L, RAVISHANKAR GA, VENKATARAMAN LV, PRATHIBA KR. Anthocyanin production in callus cultures of Daucus carota L. as influenced by nutrient stress and osmoticum. Biotechnol Lett , n.14, p.707?14. 1992 RALPH, J.; LAPIERRE, C.; LU, F.; MARITA, J. M.; PILATE, G.; DOORSSELAERE, J. V.; BOERJAN, W.; E JOUANIN, L. NMR Evidence for Benzodioxane Structures Resulting from Incorporat

Page generated in 0.0043 seconds