Gene conversion from SLG to SRK resulting in self-compatibility in Brassica rapa

被引：25

作者：

Fujimoto, R ^{[1
]}

Sugimura, T ^{[1
]}

Nishio, T ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Agr Sci, Sendai, Miyagi 9818555, Japan

来源：

FEBS LETTERS | 2006年 / 580卷 / 02期

关键词：

gene conversion; pollen-stigma interaction; recognition specificity; S haplotype; self-incompatibility; Brassica rapa;

D O I：

10.1016/j.febslet.2005.12.028

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Self-compatible S-54 homozygotic plants were found in progenies of an F-1 hybrid cultivar in Chinese cabbage. Pollination tests revealed that this self-compatibility is controlled by the S locus and caused by the loss of the recognition function of the stigma. SRK, the gene for the recognition molecule in the stigma, was normally transcribed and translated in the self-compatible plants. The 1034-bp region in the receptor domain of SRK in the self-compatible plants was 100% identical to SLG in S-54, while that in self-incompatible S-54 homozygotic plants was 95.1% identical. These results suggest that the self-compatibility of the S-54 homozygotes is due to amino-acid changes caused by gene conversion from SLG to SRK. (c) 2005 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

引用

页码：425 / 430

页数：6

共 26 条

[1] Specificity determinants and diversification of the Brassica self-incompatibility pollen ligand [J].