Document Detail


The Role of Momilactones in Rice Allelopathy.
MedLine Citation:
PMID:  23385366     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Large field screening programs and laboratory experiments in many countries have indicated that rice is allelopathic and releases allelochemical(s) into its environment. A number of compounds, such as phenolic acids, fatty acids, phenylalkanoic acids, hydroxamic acids, terpenes, and indoles, have been identified as potential rice allelochemicals. However, the studies reviewed here demonstrate that the labdane-related diterpenoid momilactones are the most important, with momilactone B playing a particularly critical role. Rice plants secrete momilactone B from their roots into the neighboring environments over their entire life cycle at phytotoxic levels, and momilactone B seems to account for the majority of the observed rice allelopathy. In addition, genetic studies have shown that selective removal of the momilactones only from the complex mixture found in rice root exudates significantly reduces allelopathy, demonstrating that these serve as allelochemicals, the importance of which is reflected in the presence of a dedicated momilactone biosynthetic gene cluster in the rice genome.
Authors:
Hisashi Kato-Noguchi; Reuben J Peters
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-2-6
Journal Detail:
Title:  Journal of chemical ecology     Volume:  -     ISSN:  1573-1561     ISO Abbreviation:  J. Chem. Ecol.     Publication Date:  2013 Feb 
Date Detail:
Created Date:  2013-2-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7505563     Medline TA:  J Chem Ecol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki, Kagawa, 761-0795, Japan, hisashi@ag.kagawa-u.ac.jp.
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