期刊
JOURNAL OF EXPERIMENTAL BOTANY
卷 71, 期 9, 页码 2573-2584出版社
OXFORD UNIV PRESS
DOI: 10.1093/jxb/eraa036
关键词
Allele-specific expression; barley; cold stress; domestication; gene regulation; Hordeum vulgare
资金
- German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) [MA6611/2]
Barley, like other crops, has experienced a series of genetic changes that have impacted its architecture and growth habit to suit the needs of humans, termed the domestication syndrome. Domestication also resulted in a concomitant bottleneck that reduced sequence diversity in genes and regulatory regions. Little is known about regulatory changes resulting from domestication in barley. We used RNA sequencing to examine allele-specific expression in hybrids between wild and domesticated barley. Our results show that most genes have conserved regulation. In contrast to studies of allele-specific expression in interspecific hybrids, we find almost a complete absence of trans effects. We also find that cis regulation is largely stable in response to short-term cold stress. Our study has practical implications for crop improvement using wild relatives. Genes regulated in cis are more likely to be expressed in a new genetic background at the same level as in their native background.
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