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Decrease of gene expression diversity during domestication of animals and plants
Liu, Wei1; Chen, Lei5; Zhang, Shilai4; Hu, Fengyi4; Wang, Zheng3; Lyu, Jun; Wang, Bao1; Xiang, Hui6,7; Zhao, Ruoping; Tian, Zhixi3; Ge, Song2; Wang, Wen5
AbstractBackgroundThe genetic mechanisms underlying the domestication of animals and plants have been of great interest to biologists since Darwin. To date, little is known about the global pattern of gene expression changes during domestication.ResultsWe generated and collected transcriptome data for seven pairs of domestic animals and plants including dog, silkworm, chicken, rice, cotton, soybean and maize and their wild progenitors and compared the expression profiles between the domestic and wild species. Intriguingly, although the number of expressed genes varied little, the domestic species generally exhibited lower gene expression diversity than did the wild species, and this lower diversity was observed for both domestic plants and different kinds of domestic animals including insect, bird and mammal in the whole-genome gene set (WGGS), candidate selected gene set (CSGS) and non-CSGS, with CSGS exhibiting a higher degree of decreased expression diversity. Moreover, different from previous reports which found 2 to 4% of genes were selected by human, we identified 6892 candidate selected genes accounting for 7.57% of the whole-genome genes in rice and revealed that fewer than 8% of the whole-genome genes had been affected by domestication.ConclusionsOur results showed that domestication affected the pattern of variation in gene expression throughout the genome and generally decreased the expression diversity across species, and this decrease may have been associated with decreased genetic diversity. This pattern might have profound effects on the phenotypic and physiological changes of domestic animals and plants and provide insights into the genetic mechanisms at the transcriptome level other than decreased genetic diversity and increased linkage disequilibrium underpinning artificial selection.
KeywordDomestication Decrease Gene expression diversity
Subject AreaEvolutionary Biology ; Genetics & Heredity
Indexed BySCI
WOS Research AreaEvolutionary Biology ; Genetics & Heredity
WOS IDWOS:000455463200001
Publication PlaceLONDON
Funding OrganizationNational Key Basic Research Program of ChinaNational Basic Research Program of China [2013CB835200]
Corresponding Author Emailliuwei@mail.kiz.ac.cn ; zxtian@genetics.ac.cn ; gesong@ibcas.ac.cn ; wwang@mail.kiz.ac.cn
OAgold, Green Published
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Cited Times:20[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Kunming Inst Zool, State Key Lab Genet Resources & Evolut, Kunming 650223, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Kunming Coll Life Sci, Kunming 650204, Yunnan, Peoples R China
3.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China
4.Chinese Acad Sci, Inst Genet & Dev Biol, State Key Lab Plant Cell & Chromosome Engn, Beijing 100101, Peoples R China
5.Yunnan Univ, Sch Agr, Kunming 650091, Yunnan, Peoples R China
6.Northwestern Polytech Univ, Key Lab Space Biosci & Biotechnol, Ctr Ecol & Environm Sci, Xian 710072, Shaanxi, Peoples R China
7.South China Normal Univ, Guangzhou Key Lab Insect Dev Regulat & Applicat R, Inst Insect Sci & Technol, Guangzhou 510631, Guangdong, Peoples R China
8.South China Normal Univ, Sch Life Sci, Guangzhou 510631, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Liu, Wei,Chen, Lei,Zhang, Shilai,et al. Decrease of gene expression diversity during domestication of animals and plants[J]. BMC EVOLUTIONARY BIOLOGY,2019,19.
APA Liu, Wei.,Chen, Lei.,Zhang, Shilai.,Hu, Fengyi.,Wang, Zheng.,...&Wang, Wen.(2019).Decrease of gene expression diversity during domestication of animals and plants.BMC EVOLUTIONARY BIOLOGY,19.
MLA Liu, Wei,et al."Decrease of gene expression diversity during domestication of animals and plants".BMC EVOLUTIONARY BIOLOGY 19(2019).
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