The impact of flavonoids released by phosphorus-deficient white lupin roots on inorganic P and soil microorganisms is largely unknown.We report that flavonoids isolated from white lupin roots mobilized inorganic phosphorus and decreased soil microbial respiration, citrate mineralization, and soil phosphohydrolase activities, but did not reduce the soil ATP content. The results suggest that white lupin’s release of flavonoids into the rhizosphere plays a significant role in its efficient P-acquisition strategy by solubilizing Fe-bound P and by limiting the microbial mineralization of citrate
Flavonoids of white lupin roots participate in phosphorus mobilization from soil / N. Tomasi; L. Weisskopf; G. Renella; L. Landi; R. Pinton; Z. Varanini; P. Nannipieri; Josè Torrent; E. Martinoia; S. Cesco. - In: SOIL BIOLOGY & BIOCHEMISTRY. - ISSN 0038-0717. - STAMPA. - 40:(2008), pp. 1971-1974. [10.1016/j.soilbio.2008.02.017]
Flavonoids of white lupin roots participate in phosphorus mobilization from soil
RENELLA, GIANCARLO;LANDI, LORETTA;NANNIPIERI, PAOLO;
2008
Abstract
The impact of flavonoids released by phosphorus-deficient white lupin roots on inorganic P and soil microorganisms is largely unknown.We report that flavonoids isolated from white lupin roots mobilized inorganic phosphorus and decreased soil microbial respiration, citrate mineralization, and soil phosphohydrolase activities, but did not reduce the soil ATP content. The results suggest that white lupin’s release of flavonoids into the rhizosphere plays a significant role in its efficient P-acquisition strategy by solubilizing Fe-bound P and by limiting the microbial mineralization of citrateFile | Dimensione | Formato | |
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