Skip to Content
Merck
  • Isolation and Identification of Vesicular-Arbuscular Mycorrhiza-Stimulatory Compounds from Clover (Trifolium repens) Roots.

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

Applied and environmental microbiology (1991-02-01)
M G Nair, G R Safir, J O Siqueira
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.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Dimethyl sulfoxide-d6, 99.5 atom % D
Sigma-Aldrich
Dimethyl sulfoxide-d6, 99.9 atom % D, contains 1 % (v/v) TMS
Sigma-Aldrich
Dimethyl sulfoxide-d6, "100%", 99.96 atom % D
Sigma-Aldrich
Dimethyl sulfoxide-d6, 99.9 atom % D, contains 0.03 % (v/v) TMS