Genomic Variation of The Rice Rim2/Hipa Superfamily and Dendrogram and Fingerprinting Analysis of Rice Germplasm Based on Rim2/Hipa Paralog Display
- VernacularTitle:水稻Rim2/Hipa超级家族的基因组变异和基于Rim2/Hipa展示的水稻资源的系统进化和指纹分析
- Author:
Pingfang TIAN
;
Jianjun WANG
;
Gang WU
;
Qun LI
;
Baorong LU
;
Zuhua HE
- Publication Type:Journal Article
- Keywords:
Oryza;
Rim2/Hipa;
genomic variation;
dendrogram;
fingerprint
- From:
Progress in Biochemistry and Biophysics
2006;33(2):169-177
- CountryChina
- Language:Chinese
-
Abstract:
The rice Rim2/Hipa is a stress-induced transposon superfamily recently identified in Oryza genomes. Genomic variation was found in the Rim2 core region among rice genetic resources/genomes, indicative of high genomic divergence accumulated during the Rim2 evolution. Based on the divergence and quiescent state of the Rim2 elements, a Rim2 paralog display-based fingerprinting approach was developed to effectively identify rice genetic resources and explore their genetic relationships within a set of rice germplasm including 45 accessions ofO. sativa and 8 accessions of its wild relatives O. rufipogon. A dendrogram showed not only clear genetic diversity of rice germplasm, but also considerable genetic differentiation among wild rice resources. The wild rice relatives were either clustered as an independent group, or among the japonica varieties. This Rim2-based fingerprinting approach could also serve as a sensitive tool to identify rice hybrids from their parents, and variety stability, demonstrating its great potential in evolution study ofrice genomes and in rice breeding and seed production.
