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Tom Price (c.1860-1927) : the art and style of a Haida artist.Glatthaar, Trisha Corliss January 1970 (has links)
The purpose of this thesis is to identify the art work of the Haida Indian artist Tom Price (c.l860 - 1927). It is not yet generally realized that Haida art was predominantly the product of only a small number of artists whose individual styles are distinctly recognizable. Much of the diversity in local and regional styles within Haida art can be explained by isolating and examining the works of the dozens of practising artists - discovering where and when they worked, how much they influenced the art around them, how traditional they were in their art, or how innovative. The immediate problem is to document these individual styles.
Art has been collected from the Northwest Coast Indian t peoples since the late Eighteenth Century when the first explorers made trading contacts with the native people. But it was collected sporadically and at first only as a curiosity or souvenir art. In the late Nineteenth Century ethnologists began to collect the Northwest Coast Indian art for museums of anthropology and natural history. They recorded the names of artists but rarely in connection with their works of art. Only recently has Northwest Coast Indian art been shown in major art exhibits in Paris, Montreal, Vancouver, etc. And only recently have art historians realized the significance of the individual art styles within the art. The work of a few Nineteenth Century masters stands out. Museums in North America and Europe unknowlingly collected only the works of the best artists working at the time.
Tom Price was one of these outstanding artists. He worked in the late Nineteenth and early Twentieth Centuries. Chapter III is a discussion of the complex and ancient tradition of Haida art with which Tom Price would have been familiar, and how it was modified in the Nineteenth Century due to increasing contact with the white man. The role of the artist in Haida society is also discussed in Chapter III, emphasizing the point that personal innovation was inherent in the art tradition.
Chapter IV deals with the documented information on the life and works of Tom Price. My chief informant is Tom Price's daughter-in-law. She and other Haida people remember Tom Price as one of the artists working in Skidegate up until 1927. They remember the collectors who purchased his work, and that he went to Victoria to sell work quite frequently. But published information on Haida artists and their works, such as the descriptive works of Marius Barbeau on argillite and totem poles, are inaccurate and confused. This is partly because his informants were not familiar enough with the artists or the art styles about which he was writing. Documented information from acquisition files and museum records is equally as disappointing because the material was not collected by art historians. There is very rarely an entry in the information catalogues for the name of the artist. The exact origin of the works is often not known because museums purchased in bulk from central bargaining points such as Port Simpson or Victoria, or they purchased complete private collections. They rarely differentiated between the place of manufacture and the purchasing point in the records. Furthermore, the date in museum records may refer to the date of acquisition rather than to the date of manufacture. The significance of this is that very few Haida works of art are reliably documented and two or three sources should be consulted before an attribution is made based on the documentation which does exist.
Chapter V is a series of comparisons of works of art by Tom Price and other Haida artists, some of which are documented, showing the wide range of styles possible in Haida art.
In Chapter VI, I begin with documented pieces by Tom Price, and I isolate design elements, or distinctive motifs from these works. Then I compare the documented works with other similar works in terms of the design elements, the compositional arrangement of those elements, the types of crests and myths illustrated, the method of carving or painting, the dates, and the places where the works were collected, and by whom. Stylistically the works form a coherent group and the documented information tends to reinforce the hypothesis that they were all done by the same man, Tom Price.
In addition to clarifying the role of the artist in Haida society, and the significance of individual artists’styles in Haida art, this thesis highlights the artistic achievements of one man. This has never been done in depth before, and it is necessary that it he done before a more realistic aesthetic appreciation of the art is possible. / Arts, Faculty of / Art History, Visual Art and Theory, Department of / Graduate
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A rhetorical critic looks at local politics: the 1975 re-election campaign of mayor Tom Moody, Columbus, OhioRitter, Jeffrey Blake January 1976 (has links)
No description available.
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8.5Volk, Jonathan 01 January 2014 (has links) (PDF)
A novel about a reality bomb.
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On Tom Kitwood and culture change in dementia careBaldwin, C. January 2008 (has links)
No / In a new book, Andrea Capstick and Clive Baldwin assess Tom Kitwood’s contribution to the field of dementia studies. Here they consider one of the key themes of their book – the transformation of organisational culture in dementia care
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Analyse du discours musical d’Antônio Carlos Jobim : les spécificités d’une modernité / Tom Jobim, analysis of the musical speech : the specificities of a modernityRodrigues Dias de Camargo, Joandre 20 December 2012 (has links)
Notre sujet de recherche est le compositeur brésilien Antônio Carlos Jobim. Il est né à Rio de Janeiro dans les années 1920, époque de grandes transformations socioculturelles au Brésil, mais aussi en Europe. Il est un compositeur issu de la musique populaire brésilienne, qui sera l’un de principaux acteurs responsables de transformations de cette musique. Son essence est sa caractéristique savante/populaire qui s’illustre symboliquement dans le concept de « l’anthropophagie ». Notre problématique est liée à la «modernité » dont fait partie Jobim, et à ses effets sur la musique populaire. C’est pourquoi nous avons analysé des compositions et des arrangements de Jobim, ce qui nous a servi à élucider son style, tout comme les diverses influences qu’il a reçues. En tant que compositeur et auteur, nous avons choisi une optique interdisciplinaire pour analyser son langage et son discours musical. Les principales sources d’intérêt de cette recherche sont d’abord, qu’elle traite de la musique savante européenne et brésilienne de la fin du 19e et du début du 20e siècle, de certaines musiques populaires, et de la façon dont elles s’incorporent dans la musique « moderne » brésilienne de Jobim. En effet, le manque de travaux universitaires sur le sujet, en tous cas dans cette optique musicologique, a motivé notre recherche. D’autre part, l’impact de ce compositeur à l’échelle internationale est important car, au-delà de synthétiser une partie de la musique populaire à travers son langage, il va s’inscrire comme un compositeur charnière qui aura marqué son époque. / The subject of my research pertains to the Brazilian composer Antônio Carlos Jobim. As composer and author, I have chosen an interdisciplinary approach, between music and musicology. There is an analysis of his musical language and his musical speech. He was born in Rio de Janeiro in the 1920s, during the period of the big cultural transformations in Brazil, and also in Europe. The main issue is connected to the brazilian popular music and the "modernity" of which Jobim is a representative. He is a composer bound to the brazilian popular music, and will be one of the main actors responsible for the profound evolutionary transformations of this music. My topic is connected with modernity, a specific feature of Jobim, and its impact over popular music. I have therefore analysed Jobim original themes, as well as its arrangements. From this, we have been able to characterize its style, and its influences. I have also chosen an interdisciplinary approach to analyse its musical language. The main interest of this research is that it deals with the erudite music from Europe and Brazil at the end of 19th century and beginning of 20th century, with some popular music and the way that they get intertwined. Indeed, the lack of university research work in this direction has motivated my research. Eventually, this musician appears as a key composer of its time, with a large international impact, in addition to his large synthesis capacity.
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Da universidade livre à escola oficial: um estudo sobre o imaginário do Centro Tom Jobim / From one free university to an official school: a study of imaginary of the Centro Tom Jobim (Brazil).Ferreira, Tiago Lazzarin 12 November 2012 (has links)
O presente estudo tem o objetivo de fornecer pistas sobre o imaginário de dois períodos distintos de uma mesma instituição: a antiga Universidade Livre de Música Tom Jobim (ULM) e a atual Escola de Música do Estado de São Paulo Tom Jobim (EMESP). Pretende compreender e caracterizar os fundamentos pedagógicos de um projeto educacional de Música utilizando-se das teorias de Gilbert Durand, Edgar Morin e José Carlos de Paula Carvalho. O interesse se deve à mudança do modelo de ensino livre e acessível a todas as idades para o modelo de ensino oficial acompanhado da padronização do perfil dos estudantes. Por meio da teoria do Imaginário de Durand, pretende-se identificar os mitos relativos às duas propostas de ensino e situá-las no panorama político que as engendrou. A pesquisa se baseou no estudo dos documentos publicados pela gestão da Organização Social Santa Marcelina, Diário Oficial do Estado de São Paulo e nas observações feitas em campo. / The present research had as objective to investigate the imaginary of two distinct periods of one same institution: the former Universidade Livre de Música-TomJobim (ULM) and the current Escola de Música do Estado de São Paulo Tom Jobim(EMESP). The aim of this study is to understand and characterize the pedagogical principles of that Music-centered educational project through the theories of Gilbert Durand, Edgar Morinand José Carlos de Paula Carvalho. This interest was awakened by the change (undergone by the institution),from a free education model accessible to all ages, to an official teaching model followed by standardization of students profiles. Through Durands theory of the Imaginary this study seeks to identify miths regarding each of the two educational proposals, and to place them in the respective political scenes that engendered them. Research was based on the study of documents published by (the administration of)the Organização Social Santa Marcelina, study of the Diário Oficial do Estado de São Paulo, and field observations.
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Compreendendo a via de desenvolvimento de tricoma glandular em tomateiro (Solanum lycopersicum) utilizando mutantes e variações genéticas naturais / Understanding the glandular trichomes development pathway in tomato (Solanum lycopersicum) using mutants and natural genetic variationsVendemiatti, Eloisa 04 September 2015 (has links)
Os tricomas são estruturas de origem epidérmicas que podem ser classificados em dois tipos: glandulares e não glandulares (tectores) e estão relacionados, principalmente, com estratégias de defesas de plantas. Pouco se conhece sobre a via de desenvolvimento dos tricomas glandulares, já que a maior parte dos estudos é em Arabidopsis thaliana, modelo no qual os tricomas glandulares são ausentes. O gênero Solanum possui uma grande diversidade de tricomas, em especial glandulares (tipos I, IV, VI e VII). O estudo de tais estruturas vem ganhando cada vez mais destaque, já que são fontes de diversos metabólitos secundários de importância econômica e ecológica. Espécies selvagens são consideradas recursos genéticos para o tomateiro (S. lycopersicum), tais como S. galapagense, a qual possui variações genéticas naturais que lhe confere maior resistência ao ataque de herbívoros. Entre essas variações está a presença de tricomas glandulares do tipo IV, uma fonte do aleloquimico acilaçúcar. A ausência de tricomas glandulares do tipo IV é considerada uma das causas da suscetibilidade do tomateiro cultivado a insetos. No presente trabalho, foi demonstrado que o tomateiro cultivado na verdade forma tricomas do tipo IV, mas estas estruturas estão presentes somente até o primeiro par de folhas, além dos cotilédones. Desse modo, a presença de tricomas tipo IV em espécies selvagens seria considerada uma neotenia, ou seja, a manutenção de estruturas juvenis na fase adulta. Além de se determinar que mutantes de tomateiro afetando a juvenilidade (e.g. Mouse ears e fasciated) apresentam tricomas tipo IV na fase adulta, a formação dessas estruturas correlacionou se com a expressão de miR156, sendo também presentes em grandes quantidades em uma linhagem transgênica superexpressando esse micro RNA relacionado à juvenilidade. Quanto à base genética da presença de tricomas tipo IV nas espécies selvagens, no presente trabalho foi criada uma linhagem quase isogênica ao modelo genética Micro-Tom (MT) contendo a variação genética natural por nós denominada Galapagos enhanced trichomes (Get). Tal variação é derivada de S. galapagense e condiciona a presença de tricomas tipo IV em folhas adultas, quando introgredida em tomateiro cultivado (cv. Micro-Tom). O mapeamento preliminar de Get no cromossomo 2 de tomateiro também foi realizado através do mapa de \"single nucleotide polymorphism\" (SNPs) entre MT e a linhagem MT-Get. A eventual clonagem de GET irá contribuir não somente para se desvendar a base genética da formação de tricomas glandulares, como também contribuir para se criar variedades resistentes a insetos, reduzindo o uso de agrotóxicos. / Trichomes are epidermal structures that can be classified into two types: glandular or non-glandular, and they are mainly related to plant defense strategies. Little is known about the glandular trichome development pathway, since most of the studies are in Arabidopsis thaliana, a model in which this kind of trichome is absent. The Solanum genus has a wide variety of trichomes, especially glandular ones (Types I, IV, VI and VII). The study of these structures are gaining more prominence, since they are sources of several secondary metabolites of economic and ecological importance. Wild species are considered genetic resources for tomato (S. lycopersicum), such as S. galapagense which has natural genetic variations that gives resistance to herbivores attack. Among these variations is the presence of type IV glandular trichomes, a source of the acyl sugar allelochemical. The absence of type IV glandular trichomes is considered to be one of the causes of tomato susceptibility to insects. In this study, it was determined that tomato actually has type IV trichomes, but these structures are present only in the cotyledons and the first pair of leaves. Thus, the presence of type IV trichomes in wild species would be considered a neotenic feature, i.e. the maintenance of juvenile structures in adulthood. In addition, it was determined that tomato mutants affecting youthfulness (e.g. Mouse ears and fasciated) have type IV trichomes in adulthood. Moreover, the presence of these structures was correlated with the expression of miR156, besides the increased formation of type IV trichomes in a transgenic line overexpressing this micro RNA related to youthfulness. On the genetic basis of type IV trichomes presence in wild species, in this work it was created a near isogenic line (NIL) containing the natural genetic variation here named Galapagos enhanced trichomes (Get). This variation is derived from S. galapagense and harbors type IV trichomes in adult leaves, when introgressed in cultivated tomato (cv. Micro-Tom). The preliminary genetic map of Get in the tomato chromosome 2 was conducted through the analysis of \"single nucleotide polymorphism\" (SNPs) between MT and MT-Get. The eventual cloning of GET will contribute not only to unravel the genetic basis of glandular trichomes formation, but will also contribute to create varieties resistant to insects, reducing the pesticides use.
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Obtenção e uso de linhagens quase isogênicas de tomateiro (Solanum lycopersicum L. cv Micro-Tom) afetando a composição de carotenoides: uma ferramenta para o estudo da nutracêutica / Obtainment and application of tomato (solanum lycopersicum l. cv micro-tom) near isogenic lines affecting carotenoid content: a nutraceutical study toolBordignon, Stevan Ricardo 02 September 2015 (has links)
A incidência de doenças crônicas atinge índices epidêmicos, sendo responsável por mais de 60% da mortalidade mundial. Medidas preventivas são adotadas e, entre elas, uma alimentação balanceada. Nesta inclui-se o consumo de frutos e vegetais, especialmente os de coloração vermelha e laranja, ricos em carotenoides, fitonutrientes que muitas vezes assumem papel de antioxidantes, prevenindo a incidência destas doenças. No presente trabalho foram obtidas linhagens quase isogênicas (NILs) de tomateiro contendo os alelos at, B, Del, gf, og, r, t e y, os quais afetam a composição de carotenoides. Tais linhagens constituem uma importante ferramenta para estudos de nutracêutica, como os testes de biodisponibilidade de diferentes tipos de carotenoides no plasma sanguíneo, após ingestão, o que foi testado no presente trabalho através do emprego de HPLC e ratos da linhagem Wistar. Além disso, frente às diferentes ofertas de cores e composições metabólicas de tomates disponíveis no mercado, as NILs permitiram o ajuste de parâmetros de colorimetria como um método rápido para identificar os principais mutantes da via de biossíntese de carotenoides presentes em linhagens comerciais. Ressalta-se que, muitas vezes as cores podem enganar e não trazer vantagens nutricionais, como é o caso do consumo de linhagens comerciais contendo a mutação yellow flesh (r). Por fim, as NILs foram utilizadas para verificar se as mutações alterando a composição de carotenoides possuíam alguma penalidade em termos de produtividade ou outros parâmetros de qualidade de fruto (Teor de Sólidos Solúveis, acidez). Os resultados mostraram-se de aplicabilidade e geraram um banco de dados passível de expansão, para novos mutantes que alterem a cor do tomate e fazendo uso de outros backgrounds. Tais dados podem ser usados tanto para programas de melhoramento visando a qualidade nutricional, quanto para o comércio atacado, beneficiando o consumidor final. / The incidence of chronic disease reaches epidemic levels, accounting for over 60% of global mortality. Preventive measures are adopted, and among them, a balanced diet. This includes the fruits and vegetables consumption, especially the red and orange ones, rich in carotenoids, phytonutrients which often assumes the role of antioxidants preventing these diseases incidence. In this study, tomato near isogenic lines (NILS) containing the alleles B, Del, gf, og, r, t and y, were obtained, affecting the carotenoid fruit content. Such lines are an important tool for nutraceutical studies, like different carotenoids bioavailability tests in blood plasma after ingestion, which was tested in this work by HPLC employment and Wistar rats. Moreover, in the face of different colors and metabolic contents offerings of tomatoes available at the market, NILs allowed the adjustment of colorimetric parameters as a fast way to identify carotenoids biosynthetic pathway key mutants present in commercial strains. It is highlighted that many times colors can mislead and not bring nutritional benefits, like the consumption of commercial strains containing the mutation yellow flesh (r). At the end, NILs were used to verify if the carotenoid content mutations had some penalty in terms of productivity or other fruit quality parameters (Soluble Solids Content, acidity). The results showed relevant and generated a database capable of expansion to new fruit color tomato mutants even in other genetic backgrounds. Such data can be used both for nutritional quality breeding programs, both for the wholesale trade, benefiting the end user.
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Genômica funcional da interação cacaueiro (Theobroma cacao L.) x Moniliophthora perniciosa por meio do sistema modelo Micro-Tom (Solanum lycopersicum L.) / Functional genomics of the interaction cocoa (Theobroma cacao L.) x Moniliophthora perniciosa by means of the model system Micro-Tom (Solanum lycopersicum L)Scotton, Danielle Camargo 21 September 2012 (has links)
A cultura do cacaueiro (Theobroma cacao L.) na região sul da Bahia foi dizimada com a introdução do fungo Moniliophthora perniciosa. Novas fontes de resistência têm sido buscadas e alternativas são necessárias para assegurar a produção de cultivares considerando a variabilidade genética do patógeno. A descoberta de genes de resistência e de defesa presumíveis a partir de abordagens genômicas impõe a necessidade de estabelecimento de uma plataforma de análise funcional para comprovar a função dos genes identificados e/ou esclarecimento dos mecanismos envolvidos; isto requer o desenvolvimento de métodos de manipulação e/ou inserção de genes, permitindo a superexpressão ou silenciamento de genes de interesse. Os primeiros cacaueiros transgênicos só foram desenvolvidos a poucos anos, e a eficiência do processo ainda é limitada. Há grande influência genotípica na capacidade embriogênica, que reduz a eficiência de obtenção de transgênicos. Micro-Tom tem sido considerado um modelo para pesquisas em tomateiro, sendo uma cultivar miniatura, ciclo de vida curto, porte reduzido e de fácil transformação. MT pode ser usada no estudo da interação com o fungo M. perniciosa, visto a disponibilidade de isolados do biótipo-S que infectam o tomateiro, assim disponibilizando informações dos mecanismos de defesa do T. cacao a M. perniciosa em um menor tempo, suprindo alguns obstáculos encontrados nas características biológicas do cacaueiro. Considerando que durante a patogênese do cacaueiro, M. perniciosa é capaz de desencadear a morte celular programada no tecido infectado, foi analisada a hipótese de que a expressão de genes anti-apoptóticos diminuiria ou minimizaria os efeitos da infecção, permitindo uma menor susceptibilidade. Para tal, foi clonado o gene da proteína Bax-inhibitor-1, que atua como atenuador basal para a progressão da morte celular, e desenvolvida uma construção. Esse gene havia sido detectado numa biblioteca da interação M. perniciosa x T. cacao e identificado com sequência completa, e foi re-introduzido em tomateiro e cacaueiro sob controle de promotor constitutivo. Para o modelo genético MT, plantas transgênicas contendo Bax-inhibitor-1, SKP1 e Cafeína sintase foram obtidas. Plantas transgênicas de tomateiro contendo o gene Bax-inhibitor-1 foram inoculadas com M. perniciosa e demonstraram redução no número de plantas sintomáticas (40%), quando comparadas as plantas de MT inoculadas com o mesmo patógeno (83%). Esses dados corroboram com resultados das inoculações com os fungos necrotróficos B. cinerea, S. sclerotium e S. rolfsii, sendo que as plantas transgênicas inoculadas também apresentaram contenção dos sintomas dessas doenças, uma redução de 40% da área de infecção em comparação as plantas de MT infectadas. Desse modo, pode-se concluir que o gene Bax-inhibitor-1 em MT agiu de forma basal na atenuação da progressão da morte celular, reduzindo os sintomas da vassoura-de-bruxa, da mesma forma que esse transgene contribuiu na redução dos sintomas do mofo cinza, mofo branco e murcha-de-esclerócio, por conter o crescimento e desenvolvimento dos fungos inoculados em tomateiro. Foi possível otimizar o protocolo de embriogênese somática e de transformação genética de cacaueiro, o que levou a obtenção de plantas transgênicas contendo a construção Bax-inhibitor-1, confirmadas por RTqPCR. Indicando que a abordagem de transformação de cacaueiro está implementada no laboratório, porém a baixa eficiência do processo e o tempo necessário ainda impedem seu uso em larga escala para análise funcional / The cultivation of cocoa (Theobroma cacao L.) in south Bahia was decimated by the introduction of the fungus Moniliophthora perniciosa. New sources of resistance have been sought and alternatives are needed to ensure the production of cultivars considering the genetic variability of the pathogen. The discovery of genes for resistance and defense presumed from genomic approaches makes it necessary the establishment of a platform to verify the function of identified genes and/or the elucidation of the mechanisms involved; this requires the development of methods for manipulating and/or insertion of genes, allowing overexpressing or silencing of genes of interest. The first transgenic cocoa were only developed a few years ago, and the efficiency of the process is still limited. There is an expressive influence of the embryogenic capacity, which reduces the efficiency of obtaining transgenic plants. The cultivar Micro-Tom (MT) is considered a model for research on tomato, since it has a miniature size, short life cycle, and facile genetic transformation. MT can be used to study the interaction with the fungus M. perniciosa, since isolates of biotype-S are able to infect tomato, thus provinding inferences about defense mechanisms of T. cacao to M. perniciosa in a short time, providing some obstacles encountered in biological characteristics of cocoa. Since during the pathogenesis of cocoa, M. perniciosa is able to trigger programmed cell death in infected tissue, it was analyzed the hypothesis that the expression of anti-apoptotic genes diminish or minimize the effects of infection, allowing less susceptibility. To this end, was cloned the protein Bax-inhibitor-1, which acts as a basal attenuator for the progression of cell death, was cloned engineered in a vector for genetic transformation. This gene was detected in a library of interaction M. perniciosa x T. cacao and identified with the complete sequence, and was re-introduced into tomato and cocoa under the control of a constitutive promoter. For the genetic model MT, transgenic plants containing Bax-inhibitor-1, SKP1 and Caffeine synthase were obtained. Transgenic tomato plants containing the gene Bax-inhibitor-1 were inoculated with M. perniciosa and demonstrated a reduction in the number of symptomatic plants (40%) compared MT plants inoculated with the same pathogen (83%). These data corroborate results of inoculations with the necrotroph fungi B. cinerea, S. sclerotium e S. rolfsii. Thus, when transgenic plants were inoculated, it was observed a reduction of 40% in the area of infection, compared to infected MT plants. Taken together, the results indicate that the gene Bax-inhibitor-1 acted in the basal attenuation of progression of cell death in MT, reducing the symptoms of the witches\' broom disease, as well as the symptoms of gray mold, white mold and wilt esclerotia. Moreover it was possible to optimize the protocol for somatic embryogenesis and genetic transformation of cocoa, which led to the production of transgenic plants containing the construct Baxinhibitor- 1, confirmed by RT-qPCR. Although, a protocol for cocoa transformation was implemented in the laboratory, its the low efficiency and the time required still prevent its widespread use for functional analysis
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Variações alélicas que afetam a carotenogênese em tomateiro alteram o amadurecimento e a suscetibilidade dos frutos ao fungo Botrytis cinerea / Allelic variations affecting tomato carotenogenesis alter ripening and susceptibility of fruits to Botrytis cinereaOrsi, Bruna 05 July 2018 (has links)
Carotenoides são pigmentos encontrados em grande abundancia em frutos do tomateiro. A capacidade de sequestro de radicais destes pigmentos faz do tomate uma excelente opção para inclusão de compostos nutricionais pela dieta. Embora a síntese de carotenoides seja reconhecida como uma das respostas da cascata de eventos que levam ao amadurecimento, pouco se sabe a respeito de sua influência neste processo. Deste modo, o objetivo deste trabalho foi determinar se o conteúdo e a composição de carotenóide nos frutos acarretam alterações na conservação e na suscetibilidade dos frutos ao fungo B. cinerea. Foram utilizadas linhagens quase isogênicas (NILs) ao Micro Tom (MT) carregando as mutações, Beta carotene (B), tangerine (t), yellow flesh (r) e Delta carotene (Del). A caracterização dessas variações alélicas revelou, não apenas alterações no conteúdo de carotenoides, mas também outros efeitos pleiotrópicos relacionados ao amadurecimento, parâmetros de qualidade, espessura da cutícula e propriedades nutricionais dos frutos. Em face disso, subsequentemente investigamos se o diferencial conteúdo e composição de carotenóides nas referidas NILs altera a suscetibilidade dos frutos ao fungo Botrytis cinerea. A caracterização do amadurecimento demonstrou que o pico climatérico dos frutos do mutante r foi antecipado, assim como a transição para o estádio breaker. De modo contrário, a alteração na coloração da epiderme do mutante t foi atrasada, reafirmando suspeitas de outros autores que sugeriram que a enzima carotenoide-isomerase é necessária para a síntese de carotenoides no escuro. O conteúdo de ácido ascórbico também foi contrastante entre estes genótipos, sendo que no mutante r a sua concentração foi elevada, enquanto em t sua concentração foi reduzida. A perda de massa dos frutos foi menor no mutante Del, no entanto, esta característica não esteve relacionada a espessura da cutícula, que foi maior em B. A inoculação com B. cinerea por meio de ferimentos na pele dos frutos revelou menor suscetibilidade do mutante t, e em menor amplitude, do mutante Del. Ainda, o mutante t também se mostrou menos suscetível à inoculação do patógeno sobre frutos intactos. A maior espessura da cutícula de B não reduziu sua suscetibilidade ao fungo, que infectou os tecidos preferencialmente através da cicatriz do pedúnculo. A interação com B. cinerea desencadeou a produção de etileno e de espécies reativas de oxigênio (EROs), assim, é provável que a capacidade de sequestro de radicais livres tenha contribuído para a redução da suscetibilidade em t e Del, que mostraram menor produção de superóxido. Juntos, estes resultados sugerem que a modulação na atividade de enzimas da carotenogênese pode servir como ferramenta para obtenção de frutos com diferente vida útil durante o armazenamento pós-colheita de tomate. / Carotenoids are pigments found in great abundance in tomato fruits. The radical sequestration capacity of these pigments makes tomato an excellent option for inclusion of nutritional compounds in diet. Although the synthesis of carotenoids is recognized as one of the cascade responses that trigger ripening, little is known about its influence in this process. Thus, the aim of this study was to determine if the content and composition of carotenoids in the fruits alters the conservation and the susceptibility of the fruits to the B. cinerea fungus. Micro Tom (MT) near-isogenic lines (NILs) harboring the mutations Beta carotene (B), tangerine (t), yellow flesh (r) and Delta carotene (Del) has been used. The characterization of these allelic variations revealed not only changes in the carotenoid content but also other pleiotropic effects related to maturation, quality parameters, cuticle thickness and nutritional properties of fruit. In this way, we subsequently investigated whether the differential content and composition of carotenoids in NILs alters fruit susceptibility to the fungus Botrytis cinerea. The ripening characterization showed that the climacteric peak of the fruits of the r mutant was anticipated, as well as the transition to the breaker stage. Conversely, the change in epidermal coloration of mutant t was delayed, reaffirming suspicions of other authors who suggested that the carotenoid-isomerase enzyme is required for the synthesis of carotenoids in the dark. The ascorbic acid content was also contrasting among these genotypes, and in the r mutant its concentration was high, while at t its concentration was reduced. The fruit mass loss was lower in Del mutant, however, this characteristic was not related to cuticle thickness, which was higher in B. Wound-inoculation with B. cinerea revealed less susceptibility of the mutant t, and in a lesser extent, the mutant Del. Further, mutant t was also less susceptible to pathogen inoculation on intact fruits. The greater thickness of the cuticle of B did not reduce its susceptibility to the fungus, which infected the tissues preferentially through the scar of the peduncle. The interaction with B. cinerea triggered the production of ethylene and reactive oxygen species (ROS), so the free radical scavenging capacity probably contributed to the reduction of t and Del susceptibility, which showed lower production of superoxide. Together, these results suggest that modulation in carotenogenesis enzyme activity may serve as a tool to obtain fruit with different shelf-life during post-harvest tomato storage.
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