Diss.--Groningen. "Dit proefschrift verschijnt tevens in Acta Botanica Neerlandica vol. 3(3), 1954."

Thesis (Ph. D.)--University OF MICHIGAN.

Thesis--Copenhagen. / "Litteraturfortegnelse": p. [232]-238.

Peter Dilg's dissertation--Marburg. / Vita. Includes bibliographical references.

Thesis (M.S.)--Ohio State University, 1971. / Includes bibliographical references (leaves 72-74). Available online via OhioLINK's ETD Center

Thesis (Ph. D.)--Ohio State University, 1937. / Vita. Includes bibliographical references (leaves 151-159).

Since the discovery of ascorbic acid oxidase by Szent-Gyorgyi (55) in 1931, an ever increasing number of plant species and parts have been shown to contain the enzyme. The following list (Table I) of ascorbic acid oxidase-containing plants has been compiled from the literature up to and including 1950. The list, though small, includes plants from eleven families of the Monocotyledoneae and Dicotyledoneae. Several investigators (16, 20, 55, 62) consider that ascorbic acid oxidase in these plants plays a terminal role in their respiration but others (2, 7), are not in agreement with this view owing mainly to the limited distribution of the enzyme. The work reported here has been chiefly devoted to a study of the kinetics of the enzyme as a contribution to the general knowledge of the respiratory enzymes of plants.

Ascocybe grovesii was discovered in 1953 by Doreen E. Wells at the Division of Botany and Plant Pathology, Science Service, Department of Agriculture, Ottawa. (59) The species under study is the only known member of the genus. Apart from the work of Miss Wells, no other studies have been made of this fungus. Dr. C.M. Wilson of the Botany Department of McGill University, found that Ascocybe produced an aromatic odor during growth on a mixture of glucose and amino acids. Moreover, the fungus was found to be incapable of growth on glucose and inorganic nitrogen.

The development of new techniques since the War has played a great part in furthering our understanding of plant physiology and biochemistry. Photosynthesis and nitrogen metabolism especially have been aided by the introduction of such tools as paper chromatography by Consden, Gordon and Martin in 1944 and by the long-lived isotope of carbon, C14, first used with plant materials by Ruben and Kameri in 1940. Ion-exchange resins, although known since the beginning of the century, have been applied to biological work only in the last decade.

The Fusarium wilt disease of tomato caused by Fusarium oxysporum f. lycopersici (Sacc.) Snyder and Hansen (F. lycopersici) was first noted in the Channel Islands a few years before 1895 (Walker, 1950). Today, the disease is as widespread as its host, Lycopersicon esculentum Mill. Economic losses due to this disease throughout the world amount to several millions of dollars every year. Numerous scientists have undertaken studies on this disease either because of its economic importance or as a subject for investigations on host-parasite relationships. [...]