The wheat VRN2 gene is a flowering repressor down-regulated by vernalization

被引：830

作者：

Yan, LL

Loukoianov, A

Blechl, A

Tranquilli, G

Ramakrishna, W

SanMiguel, P

Bennetzen, JL

Echenique, V

Dubcovsky, J ^{[1
]}

机构：

[1] Univ Calif Davis, Dept Agron & Range Sci, Davis, CA 95616 USA

[2] ARS, USDA, Albany, CA 94710 USA

[3] Michigan Technol Univ, Dept Biol Sci, Houghton, MI 49931 USA

[4] Purdue Univ, Purdue Univ Genom Core, W Lafayette, IN 47907 USA

[5] Univ Georgia, Dept Genet, Athens, GA 30602 USA

来源：

SCIENCE | 2004年 / 303卷 / 5664期

关键词：

D O I：

10.1126/science.1094305

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Plants with a winter growth habit flower earlier when exposed for several weeks to cold temperatures, a process called vernalization. We report here the positional cloning of the wheat vernalization gene VRN2, a dominant repressor of flowering that is down-regulated by vernalization. Loss of function of VRN2, whether by natural mutations or deletions, resulted in spring lines, which do not require vernalization to flower. Reduction of the RNA level of VRN2 by RNA interference accelerated the flowering time of transgenic winter-wheat plants by more than a month.

引用

页码：1640 / 1644

页数：5

共 21 条

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