Document Detail


Anthocyanin pathway in rice (Oryza sativa L): identification of a mutant showing dominant inhibition of anthocyanins in leaf and accumulation of proanthocyanidins in pericarp.
MedLine Citation:
PMID:  24169778     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The present study has surveyed a collection of indica rice (Oryza sativa) lines for tissue-specific anthocyanin pigmentation pattern, which has also been used for a genetically meaningful classification. This classification helped predict probable genotypes of rice lines and, in the process, a leaf blade-specific dominant inhibitor of pigmentation (Ilb) was predicted and its presence later confirmed in two lines. We ascribe most tissue-specific accumulation of anthocyanins to the presence of a different set of Pl alleles. Cyanidin, as a major pigment, and peonidin, as a minor pigment, were detected in purple-pigmented tissues. Further, the floral organ-derived tissues always contained a higher level of anthocyanins and, correspondingly, a relatively increased proportion of peonidin. One line, N22B, with a brown pericarp was identified and shown to accumulate proanthocyanidins, but with no anthocyanins, in the pericarp. We propose that the accumulation of proanthocyanidins is due to a block in the anthocyanin biosynthetic pathway in rice at the anthocyanidin synthase-mediated conversion of leucoanthocyanidin to anthocyanidin.
Authors:
V S Reddy; S Dash; A R Reddy
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik     Volume:  91     ISSN:  0040-5752     ISO Abbreviation:  Theor. Appl. Genet.     Publication Date:  1995 Jul 
Date Detail:
Created Date:  2013-10-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0145600     Medline TA:  Theor Appl Genet     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  301-12     Citation Subset:  -    
Affiliation:
Plant Molecular Genetics Laboratory, Departement of Plant Sciences, School of Life Sciences, University of Hyderabad, 500134, AP, India.
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