Flavonoids influence growth and saccharide metabolism of Rhizobium meliloti
1999
Jain, V. | Nainawatee, H.S. (Chaudhary Charan Singh Haryana Agricultural Univ., Hisar (India))
Supplementation of the growth media with flavonoids viz. naringenin, flavone, quercetin and syringaldehyde, a phenolic compound and alfalfa seed exudate, differently affected the growth and saccharide metabolism of Rhizobium meliloti. Quercetin increased while syringaldehyde, flavone and alfalfa exudate decreased the growth and protein content of R meliloti cells. Naringenin had no effect on growth and protein content though it incrcased the exopolysaccharide productin. Application of naringenin increased the activities of enzymes of the citrate cycle and the 6-phosphogluconate pathway, the major pathways of sugar metabolism in fast growing rhizobia, and decreased activities of glycolytic enzymes. The activities of enzymes of the pentose phosphate pathway remained unaffected by various treatments.
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