Nodulation inducing factors

Details Nodulation inducing factors Nodulation inducing factors

1989-08-08

1992-08-25

Fox, David T.

Drug, bio-affecting and body treating compositions

Whole live micro-organism, cell, or virus containing

Genetically modified micro-organism, cell, or virus

4352522, 435878, 71 7, 71 88, 47 576, 47DIG9, 47DIG10, A01N 6300, A01N 4300, C12R 141, C05F 1108, A01C 106

Patent

active

051417456

ABSTRACT:
Nodulation gene-inducing factors have been isolated and identified. A number of substituted flavones, some of which are components of exudates and extracts of leguminous plants, have been found to induce expression of certain nodulation genes in Rhizobium strains. Three components of clover extract 7,4'-dihydroxyflavone, 7,4'-dihydroxy-3'methoxyflavone, and 4'-hydroxy-7-methoxyflavone have been identified as nodulation inducers of certain Rhizobium trifolii nod genes. A number of other flavonoids including flavones, flavanones, flavanols and dihydroflavanols, not necessarily found in legume exudates, were also found to induce expression of certain nodulation genes.

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