Titlebook: Symbiotic Nitrogen Fixation; Proceedings of the 1 P. H. Graham,M. J. Sadowsky,C. P. Vance Conference proceedings 1994 Springer Science+Busi

故意

Role of rhizobial lipo-oligosacharides in root nodule formation on leguminous plants, genes that are essential for nodulation. Most of the . gene products are involved in the biosynthesis of lipo-oligosaccharide molecules. The common . genes are minimally required for the synthesis of all lipo-oligosaccharides. Host-specific . gene products in a given . species are responsible for s

樸素

Sucrose transport and hydrolysis in ,,ion) as carbon sources. Bacteria were able to simultaneously use different carbon sources and, with a combination sucrose and glutamate, the growth rate was faster than with either carbon source alone. Sucrose transport was induced by sucrose and partially repressed by glucose and glutamate if they

愛國(guó)者

Shoot/root assimilate allocation and nodulation of , seedlings as influenced by shoot light environ higher ratio of far-red (FR) relative to red (R) light resulted in longer stems, higher shoot/root biomass ratio, less massive roots and fewer nodules. The same response pattern to FR/R ratio was obtained in a controlled environment with artificial light sources, or in sunlight where the FR/R ratio

CAJ

jocular

What triggers the regulation of nitrogenase activity in forage legume nodules after defoliation?,hanisms are not understood yet. The impact of current photosynthesis can be excluded. The precise role of carbohydrate availability is still unclear and remains to be established. From current knowledge we can conclude that, after defoliation, nitrogenase activity in legume nodules is down-regulated

寬度

斜谷

FLORA

Recent developments in the actinorhizal symbioses,t. Several thorough reviews of the biology of these actinorhizal associations have appeared in recent years (Benson and Silvester, 1993; Schwintzer and Tjepkema, 1990; Tjepkema et al., 1986). The purpose of the present discussion is to provide a summary overview of the actinorhizal symbioses, with a

nugatory

Characterization of , chromosomal genes involved in the regulation of , gene expression in free-livmplete open reading frames. These were designated as .’, ., . and ., respectively, based on the strong homology of the deduced amino acid sequences with those encoded by genes from . (.’ and .) and . (. and .). Implication of these findings on the regulation of hydrogenase synthesis by hydrogen, oxy

修飾語(yǔ)