期刊
CURRENT BIOLOGY
卷 17, 期 8, 页码 734-740出版社
CELL PRESS
DOI: 10.1016/j.cub.2007.03.022
关键词
-
资金
- NIGMS NIH HHS [R01 GM057527-08, GM057527, R01 GM057527] Funding Source: Medline
Breakdown of the pollination barrier of self-incompatibility (SI) in older flowers, a phenomenon known as pseudo-self-compatibility or transient SI, has been described as an advantageous reproductive assurance strategy that allows selfing after opportunities for out-crossing have been exhausted [1-9]. Pseudoself-compatibility is quite prevalent as a mixed mating strategy in nature, but the underlying molecular mechanisms are not known. We had previously shown that Arabidopsis thaliana exhibits cryptic natural variation for pseudo-self-compatibility, which is uncovered by transformation of different accessions with Sl specificity-determining SRK and SCR genes from its selfincompatible sister species A. lyrata [10, 11]. Here, by using this transgenic A. thaliana model, we show that pseudo-self-compatibility is caused by a hypomorphic allele of PUB8, an S-locus-linked gene encoding a previously uncharacterized ARM repeat- and U box-containing protein that regulates SRKtranscript levels. This is the first gene underlying pseudo-selfcompatibility to be identified and the first report in which cryptic natural variation unveiled by a transgene enabled the cloning of a gene for a complex trait.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据