Identification of SUB1A alleles from wild rice Oryza rufipogon Griff

Submergence stress is a major constraint to rice production in South and Southeast Asia. Most rice (Oryza sativa L.) cultivars die within a week of complete submergence, while a small number of accessions are submergence-tolerant for up to 2 weeks or more. These cultivars have the tolerant allele of...

Full description

Saved in:
Bibliographic Details
Published in:Genetic resources and crop evolution 2011-12, Vol.58 (8), p.1237-1242
Main Authors: Li, Zhi-Xin, Septiningsih, E. M, Quilloy-Mercado, S. M, McNally, K. L, Mackill, D. J
Format: Article
Language:English
Subjects:
Agriculture
Agronomy
Alleles
Biomedical and Life Sciences
Chromosome 9
Chromosomes
Crop production
Cultivars
Genes
Life Sciences
loci
Oryza rufipogon
Oryza sativa
Oryza sativa indica
Plant Genetics and Genomics
Plant Physiology
Plant Sciences
Plant Systematics/Taxonomy/Biogeography
Primers
Research Article
Rice
Submergence
wild rice
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Submergence stress is a major constraint to rice production in South and Southeast Asia. Most rice (Oryza sativa L.) cultivars die within a week of complete submergence, while a small number of accessions are submergence-tolerant for up to 2 weeks or more. These cultivars have the tolerant allele of the SUB1A gene, one of three ERF genes at this locus on rice chromosome 9. In all O. sativa varieties studied, the SUB1A gene is limited to a subset of indica accessions of O. sativa. Thus far, there has been no published report of the SUB1A gene in wild rice species. Here we report evidence of the SUB1A gene found in wild species of O. rufipogon Griff. accessions by the use of degenerate primers corresponding to the most highly conserved regions of the SUB1 locus. The results indicated that two SUB1A-like alleles, e.g. OrSub1A-1 and OrSub1A-2, were identified from two O. rufipogon accessions. Submergence treatment shows that both of the accessions with SUB1A-like genes were submergence-intolerant. This preliminary study provides insight into the origin and allelic variation of SUB1A, an agronomically important gene that is rapidly being introduced into widely-grown rice cultivars.
ISSN:0925-9864
1573-5109
DOI:10.1007/s10722-010-9657-2