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Flavonoids of white lupin roots participate in phosphorus mobilization from soil


Tomasi, N; Weisskopf, L; Renella, G; Landi, L; Pinton, R; Varanini, Z; Nannipieri, P; Torrent, J; Martinoia, E; Cesco, S (2008). Flavonoids of white lupin roots participate in phosphorus mobilization from soil. Soil Biology and Biochemistry, 40(7):1971-1974.

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 citrate.

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 citrate.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Plant and Microbial Biology
Dewey Decimal Classification:580 Plants (Botany)
Language:English
Date:July 2008
Deposited On:25 Jan 2009 16:44
Last Modified:05 Apr 2016 12:48
Publisher:Elsevier
ISSN:0038-0717
Publisher DOI:https://doi.org/10.1016/j.soilbio.2008.02.017

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