期刊
NATURE GENETICS
卷 44, 期 6, 页码 720-U154出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ng.2281
关键词
-
资金
- Agriculture and Food Research Initiative from US Department of Agriculture (USDA) National Institute of Food and Agriculture [2011-03587]
- National Science Foundation [DBI-0820610, DBI-0820619, DBI-1027527]
- US Department of Energy [DE-SC0002259]
- USDA-ARS
- Kansas State University
- Kansas State University Center for Sorghum Improvement
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [1027527, 0820610, 820831] Funding Source: National Science Foundation
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [0820619] Funding Source: National Science Foundation
A key step during crop domestication is the loss of seed shattering. Here, we show that seed shattering in sorghum is controlled by a single gene, Shattering1 (Sh1), which encodes a YABBY transcription factor. Domesticated sorghums harbor three different mutations at the Sh1 locus. Variants at regulatory sites in the promoter and intronic regions lead to a low level of expression, a 2.2-kb deletion causes a truncated transcript that lacks exons 2 and 3, and a GT-to-GG splice-site variant in the intron 4 results in removal of the exon 4. The distributions of these non-shattering haplotypes among sorghum landraces suggest three independent origins. The function of the rice ortholog (OsSh1) was subsequently validated with a shattering-resistant mutant, and two maize orthologs (ZmSh1-1 and ZmSh1-5.1+ZmSh1-5.2) were verified with a large mapping population. Our results indicate that Sh1 genes for seed shattering were under parallel selection during sorghum, rice and maize domestication.
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