RT Journal
A1 Li, Yong
A1 Cao, Ke
A1 Li, Nan
A1 Zhu, Gengrui
A1 Fang, Weichao
A1 Chen, Changwen
A1 Wang, Xinwei
A1 Guo, Jian
A1 Wang, Qi
A1 Ding, Tiyu
A1 Wang, Jiao
A1 Guan, Liping
A1 Wang, Junxiu
A1 Liu, Kuozhan
A1 Guo, Wenwu
A1 Arús, Pere
A1 Huang, Sanwen
A1 Fei, Zhangjun
A1 Wang, Lirong
T1 Genomic analyses provide insights into peach local adaptation and responses to climate change
JF Genome Research 
JO Genome Research 
YR 2021 
FD April 01 
VO 31 
IS 4 
SP 592 
OP 606 
DO 10.1101/gr.261032.120 
UL http://genome.cshlp.org/content/31/4/592.abstract 
AB The environment has constantly shaped plant genomes, but the genetic bases underlying how plants adapt to environmental influences remain largely unknown. We constructed a high-density genomic variation map of 263 geographically representative peach landraces and wild relatives. A combination of whole-genome selection scans and genome-wide environmental association studies (GWEAS) was performed to reveal the genomic bases of peach adaptation to diverse climates. A total of 2092 selective sweeps that underlie local adaptation to both mild and extreme climates were identified, including 339 sweeps conferring genomic pattern of adaptation to high altitudes. Using genome-wide environmental association studies (GWEAS), a total of 2755 genomic loci strongly associated with 51 specific environmental variables were detected. The molecular mechanism underlying adaptive evolution of high drought, strong UVB, cold hardiness, sugar content, flesh color, and bloom date were revealed. Finally, based on 30 yr of observation, a candidate gene associated with bloom date advance, representing peach responses to global warming, was identified. Collectively, our study provides insights into molecular bases of how environments have shaped peach genomes by natural selection and adds candidate genes for future studies on evolutionary genetics, adaptation to climate changes, and breeding.