Nasturtium
Mostrando 25-29 de 29 artigos, teses e dissertações.
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25. Long Chain (C20 and C22) Fatty Acid Biosynthesis in Developing Seeds of Tropaeolum majus: AN IN VIVO STUDY 1
The storage triacylglycerols of nasturtium (Tropaeolum majus) seeds are composed principally of cis-11-eicosenoate and cis-13-docosenoate. To investigate the biosynthesis of these C20 and C22 fatty acids, developing seed tissue was incubated with various 14C-labeled precursors. Incubation with [1-14C]acetate produced primarily cis-11-[1-14C]eicosenoate and c
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26. Xyloglucan galactosyl- and fucosyltransferase activities from pea epicotyl microsomes.
Microsomal membranes from growing tissue of pea (Pisum sativum L.) epicotyls were incubated with the substrate UDP-[14C]galactose (Gal) with or without tamarind seed xyloglucan (XG) as a potential galactosyl acceptor. Added tamarind seed XG enhanced incorporation of [14C]Gal into high-molecular-weight products (eluted from columns of Sepharose CL-6B in the v
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27. Production of a Novel Extracellular Cutinase by the Pollen and the Chemical Composition and Ultrastructure of the Stigma Cuticle of Nasturtium (Tropaeolum majus) 1
Germinating nasturtium pollen (Tropaeolum majus) is shown to excrete an enzyme(s) which hydrolyzes all types of monomers from biosynthetically labeled cutin and p-nitrophenyl esters, which are model substrates for fungal cutinases. The pollen cutinase showed an optimum pH near 6.5 and was inhibited by thiol-directed reagents such as p-hydroxymercuribenzoate
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28. Characterization and expression of transcripts induced by oxygen deprivation in maize (Zea mays L.).
Until recently, the only genes described in plants induced by oxygen deprivation (anoxia or hypoxia) encoded enzymes of glucose-phosphate metabolism. In the present study, two flooding-induced maize (Zea mays L.) genes that may serve a different function have been identified. These genes, with unique kinetics of mRNA induction under flooding conditions, were
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29. Molecular cloning and characterization of a brassinosteroid-regulated gene from elongating soybean (Glycine max L.) epicotyls.
Brassinosteroids promote elongation and regulate gene expression in soybean (Glycine max L.) stems. We constructed a cDNA library from brassinosteroid-treated soybean epicotyls and used differential hybridization to isolate a cDNA (pBRU1) corresponding to a transcript whose abundance is increased by brassinosteroid treatment. Sequence analysis of pBRU1 revea