Document Detail


Indole acetic acid and its metabolism in root nodules of a monocotyledonous tree Roystonea regia.
MedLine Citation:
PMID:  9662615     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
P S Basu; A C Ghosh
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Current microbiology     Volume:  37     ISSN:  0343-8651     ISO Abbreviation:  Curr. Microbiol.     Publication Date:  1998 Aug 
Date Detail:
Created Date:  1998-08-13     Completed Date:  1998-08-13     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7808448     Medline TA:  Curr Microbiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  137-40     Citation Subset:  IM    
Affiliation:
Department of Botany, Burdwan University, Golapbag, Burdwan 713104, West Bengal, India.
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MeSH Terms
Descriptor/Qualifier:
Catechol Oxidase / metabolism
Cell Division / physiology
Cotyledon / chemistry*,  enzymology,  microbiology
Indoleacetic Acids / metabolism*
Peroxidase / metabolism
Peroxidases / metabolism
Phenols / metabolism
Plant Roots / chemistry*,  microbiology,  ultrastructure
Rhizobium / cytology,  metabolism,  ultrastructure
Trees / chemistry*,  enzymology,  microbiology
Tryptophan / metabolism
Chemical
Reg. No./Substance:
0/Indoleacetic Acids; 0/Phenols; 73-22-3/Tryptophan; 87-51-4/indoleacetic acid; EC 1.10.3.1/Catechol Oxidase; EC 1.11.-/indoleacetic acid oxidase; EC 1.11.1.-/Peroxidases; EC 1.11.1.7/Peroxidase

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