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The genome of cultivated peanut provides insight into legume karyotypes, polyploid evolution and crop domestication.


ABSTRACT: High oil and protein content make tetraploid peanut a leading oil and food legume. Here we report a high-quality peanut genome sequence, comprising 2.54?Gb with 20 pseudomolecules and 83,709 protein-coding gene models. We characterize gene functional groups implicated in seed size evolution, seed oil content, disease resistance and symbiotic nitrogen fixation. The peanut B subgenome has more genes and general expression dominance, temporally associated with long-terminal-repeat expansion in the A subgenome that also raises questions about the A-genome progenitor. The polyploid genome provided insights into the evolution of Arachis hypogaea and other legume chromosomes. Resequencing of 52 accessions suggests that independent domestications formed peanut ecotypes. Whereas 0.42-0.47 million years ago (Ma) polyploidy constrained genetic variation, the peanut genome sequence aids mapping and candidate-gene discovery for traits such as seed size and color, foliar disease resistance and others, also providing a cornerstone for functional genomics and peanut improvement.

SUBMITTER: Zhuang W 

PROVIDER: S-EPMC7188672 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature

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The genome of cultivated peanut provides insight into legume karyotypes, polyploid evolution and crop domestication.

Zhuang Weijian W   Chen Hua H   Yang Meng M   Wang Jianping J   Pandey Manish K MK   Zhang Chong C   Chang Wen-Chi WC   Zhang Liangsheng L   Zhang Xingtan X   Tang Ronghua R   Garg Vanika V   Wang Xingjun X   Tang Haibao H   Chow Chi-Nga CN   Wang Jinpeng J   Deng Ye Y   Wang Depeng D   Khan Aamir W AW   Yang Qiang Q   Cai Tiecheng T   Bajaj Prasad P   Wu Kangcheng K   Guo Baozhu B   Zhang Xinyou X   Li Jingjing J   Liang Fan F   Hu Jiang J   Liao Boshou B   Liu Shengyi S   Chitikineni Annapurna A   Yan Hansong H   Zheng Yixiong Y   Shan Shihua S   Liu Qinzheng Q   Xie Dongyang D   Wang Zhenyi Z   Khan Shahid Ali SA   Ali Niaz N   Zhao Chuanzhi C   Li Xinguo X   Luo Ziliang Z   Zhang Shubiao S   Zhuang Ruirong R   Peng Ze Z   Wang Shuaiyin S   Mamadou Gandeka G   Zhuang Yuhui Y   Zhao Zifan Z   Yu Weichang W   Xiong Faqian F   Quan Weipeng W   Yuan Mei M   Li Yu Y   Zou Huasong H   Xia Han H   Zha Li L   Fan Junpeng J   Yu Jigao J   Xie Wenping W   Yuan Jiaqing J   Chen Kun K   Zhao Shanshan S   Chu Wenting W   Chen Yuting Y   Sun Pengchuan P   Meng Fanbo F   Zhuo Tao T   Zhao Yuhao Y   Li Chunjuan C   He Guohao G   Zhao Yongli Y   Wang Congcong C   Kavikishor Polavarapu Bilhan PB   Pan Rong-Long RL   Paterson Andrew H AH   Wang Xiyin X   Ming Ray R   Varshney Rajeev K RK  

Nature genetics 20190501 5


High oil and protein content make tetraploid peanut a leading oil and food legume. Here we report a high-quality peanut genome sequence, comprising 2.54 Gb with 20 pseudomolecules and 83,709 protein-coding gene models. We characterize gene functional groups implicated in seed size evolution, seed oil content, disease resistance and symbiotic nitrogen fixation. The peanut B subgenome has more genes and general expression dominance, temporally associated with long-terminal-repeat expansion in the  ...[more]

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