Indole acetic acid and its metabolism in root nodules of a monocotyledonous tree Roystonea regia.
Copyright policy )Indole acetic acid and its metabolism in root nodules of a monocotyledonous tree Roystonea regia.
A monocotyledonous tree, Roystonea regia, was found to bear root nodules. The root nodules contained a high amount (16.9 microg/g fresh mass) of indole acetic acid (IAA). A big tryptophan pool (1555.1 microg/g fresh mass) was found in the root nodules, which might serve as a source of IAA production. The presence of IAA-metabolizing enzymes IAA oxidase and peroxidase indicated metabolism of IAA in the root nodules. The symbiont isolated from the root nodules of R. regia, a Rhizobium sp., produced high amount of IAA in culture when supplemented with tryptophan. The possible role of this IAA production in the monocotyledonous tree-Rhizobium symbiosis is discussed.
- University of Burdwan India
Indoleacetic Acids, Tryptophan, Plant Roots, Trees, Peroxidases, Phenols, Cotyledon, Catechol Oxidase, Cell Division, Peroxidase, Rhizobium
Indoleacetic Acids, Tryptophan, Plant Roots, Trees, Peroxidases, Phenols, Cotyledon, Catechol Oxidase, Cell Division, Peroxidase, Rhizobium
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