VITAMIN B1 IN THE NUTRITION OF EXCISED TOMATO ROOTS
نویسندگان
چکیده
منابع مشابه
Amino Acids in the Nutrition of Excised Tomato Roots.
Introduction A preliminary study of the growth-promoting materials obtainable from yeast and essential for the nutrition of excised tomato roots (10) has shown that all of these materials are soluble in 85 per cent. ethyl alcohol, insoluble in ether, and stable in boiling trichloroacetic acid. They can be further divided into two fractions by extracting with absolute alcohol. Both fractions are...
متن کاملEthionine Inhibition and Morphogenesis of Excised Tomato Roots.
Replacement of the terminal methyl group of methionine by an ethyl group gives the substance ethionine. Ethionine has been shown to be an antimetabolite of methionine in a number of biological systems in that inhibition by ethionine is reversed by methionine (16, 35). The precise mode of action is not certain; it probably varies from one organism to another. Present evidence from work on animal...
متن کاملInvestigation into the Function of Pyridoxin as a Growth Factor for Excised Tomato Roots.
Thiamin, pyridoxin, niacin, and glycine have all been reported to act as growth factors for excised tomato roots grown in sterile culture. White (9) showed that, in basal medium plus thiamin, partial replacement of pyridoxin by glycine could be effected using any one of three different clones of excised roots. The degree to which glycine replaced pvridoxin varied with the different clones. Furt...
متن کاملInfluence of Urea, Hydroxyurea, and Thiourea on Meloidogyne javanica and Infected Excised Tomato Roots in Culture.
Urea (U), hydroxyurea (HU), and thiourea (TU), in various concentrations, were added to chemically defined plant tissue culture medium on which Meloidogyne javanica was reared on excised tomato roots. Concentrations as low as 3 ppm HU or 12 ppm TU inhibited nematode maturation by 70-90% 4 weeks after inoculation, and the coenocytes in the parasitized tissue were poorly developed. Gall weight wa...
متن کاملInhibition of Syncytia Formation and Root-knot Nematode Development on Cultures of Excised Tomato Roots.
Two different defined growth media were used to culture aseptically the root-knot nematode, Meloidogyne incognita, on excised roots of tomato, Lycopersicon esculentum cv 'Marglobe.' One of these media, STW, was a formulation by Skoog, Tsui, and White and the other, MS, a formulation by Murashige and Skoog. From 1 through 4 weeks, inoculated tissues were fractured to observe root infection, gian...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1937
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.12.3.803