CACTA-like transposable element in ZmCCT attenuated photoperiod sensitivity and accelerated the postdomestication spread of maize

被引：337

作者：

Yang, Qin ^{[1
]}

Li, Zhi ^{[1
]}

Li, Wenqiang ^{[2
]}

Ku, Lixia ^{[3
]}

Wang, Chao ^{[1
]}

Ye, Jianrong ^{[1
]}

Li, Kun ^{[1
]}

Yang, Ning ^{[2
]}

Li, Yipu ^{[1
]}

Zhong, Tao ^{[1
]}

Li, Jiansheng ^{[1
]}

Chen, Yanhui ^{[3
]}

Yan, Jianbing ^{[2
]}

Yang, Xiaohong ^{[1
]}

Xu, Mingliang ^{[1
]}

机构：

[1] China Agr Univ, Beijing Key Lab Crop Genet Improvement, Natl Maize Improvement Ctr China, Beijing 100193, Peoples R China

[2] Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Wuhan 430070, Peoples R China

[3] Henan Agr Univ, Coll Agron, Zhengzhou 450002, Peoples R China

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2013年 / 110卷 / 42期

关键词：

ZINC-FINGER PROTEIN; EPIGENETIC REGULATION; GENE; DOMESTICATION; ARCHITECTURE; INSERTIONS; EXPRESSION; REGULATOR; SELECTION; CONSTANS;

D O I：

10.1073/pnas.1310949110

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：

The postdomestication adaptation of maize to longer days required reduced photoperiod sensitivity to optimize flowering time. We performed a genome-wide association study and confirmed that ZmCCT, encoding a CCT domain-containing protein, is associated with the photoperiod response. In early-flowering maize we detected a CACTA-like transposable element (TE) within the ZmCCT promoter that dramatically reduced flowering time. TE insertion likely occurred after domestication and was selected as maize adapted to temperate zones. This process resulted in a strong selective sweep within the TE-related block of linkage disequilibrium. Functional validations indicated that the TE represses ZmCCT expression to reduce photoperiod sensitivity, thus accelerating maize spread to long-day environments.

引用

页码：16969 / 16974

页数：6

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