Titlebook: Highlights of Nitrogen Fixation Research; Esperanza Mart?nez,Georgina Hernández Book 1999 Springer Science+Business Media New York 1999 Al

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Phosphate Metabolism in ,,hosphate transport or regulation, and identification of phosphate-stress-inducible genes. Data obtained from these studies suggest the alfalfa and bean symbioses may differ with respect to the manner in which phosphorus is provided to the bacteroids, and that phosphorus limitation has global effects on gene expression in rhizobia.

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Hopanoid Lipid Content of Bradyrhizobium Bacteria is Dependent on Culture Conditions,on in hopanoid content, while on medium supplemented with a root extract from the symbiotic soybean host a dramatic reduction in and only trace amounts of hopanoids were detected. This suggests that rhizosphere/nodule micro-environments may have a strong influence on the hopanoid content.

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Flavonoid Enhancement of Sorghum Root Development,iption factor (Schell et al., 1998). In assessments of the ability of flavonoids to stimulate rhizobial colonization of the roots of non-leguminous plants (Webster et al., 1997), uninoculated sorghum plants developed a more extensive root system when treated with naringenin. This growth response has now been examined in detail.

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