期刊
SCIENCE
卷 326, 期 5956, 页码 1118-1120出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1178294
关键词
-
资金
- NSF [DBI-0527192]
- Iowa State University's Plant Sciences Institute
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [0910642] Funding Source: National Science Foundation
Heterosis refers to the superior performance of hybrid progeny relative to their inbred parents, but the mechanisms responsible are unknown. Hybrids between the maize inbred lines B73 and Mo17 exhibit heterosis regardless of cross direction. These reciprocal hybrids differ from each other phenotypically, and 30 to 50% of their genes are differentially expressed. We identified similar to 4000 expression quantitative trait loci (eQTL) that allowed us to identify markers linked to variation in expression. We found that over three-quarters of these eQTL act in trans (78%) and that 86% of these differentially regulate transcript accumulation in a manner consistent with gene expression in the hybrid being regulated exclusively by the paternally transmitted allele. This result suggests that widespread imprinting contributes to the regulation of gene expression in maize hybrids.
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