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. 1991 Feb;57(2):434–439. doi: 10.1128/aem.57.2.434-439.1991

Isolation and Identification of Vesicular-Arbuscular Mycorrhiza-Stimulatory Compounds from Clover (Trifolium repens) Roots

Muraleedharan G Nair 1,*, Gene R Safir 1, Jose O Siqueira 1,
PMCID: PMC182728  PMID: 16348409

Abstract

Two isoflavonoids isolated from clover roots grown under phosphate stress were characterized as formononetin (7-hydroxy,4′-methoxy isoflavone) and biochanin A (5,7-dihydroxy,4′-methoxy isoflavone). At 5 ppm, these compounds stimulated hyphal growth in vitro and root colonization of an undescribed vesicular-arbuscular mycorrhiza, a Glomus sp. (INVAM-112). The permethylated products of the two compounds were inactive. These findings suggest that the isoflavonoids studied may act as signal molecules in vesicular-arbuscular mycorrhiza symbiosis.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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