Genomic insight into domestication of rubber tree
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Published:2023-08-02
Issue:1
Volume:14
Page:
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ISSN:2041-1723
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Container-title:Nature Communications
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language:en
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Short-container-title:Nat Commun
Author:
Chao JinquanORCID, Wu Shaohua, Shi Minjing, Xu Xia, Gao Qiang, Du Huilong, Gao BinORCID, Guo Dong, Yang Shuguang, Zhang Shixin, Li Yan, Fan Xiuli, Hai Chunyan, Kou LiquanORCID, Zhang Jiao, Wang ZhiweiORCID, Li Yan, Xue Wenbo, Xu JiangORCID, Deng Xiaomin, Huang Xiao, Gao Xinsheng, Zhang Xiaofei, Hu Yanshi, Zeng Xia, Li Weiguo, Zhang Liangsheng, Peng Shiqing, Wu Jilin, Hao Bingzhong, Wang Xuchu, Yu HongORCID, Li JiayangORCID, Liang ChengzhiORCID, Tian Wei-Min
Abstract
AbstractUnderstanding the genetic basis of rubber tree (Hevea brasiliensis) domestication is crucial for further improving natural rubber production to meet its increasing demand worldwide. Here we provide a high-quality H. brasiliensis genome assembly (1.58 Gb, contig N50 of 11.21 megabases), present a map of genome variations by resequencing 335 accessions and reveal domestication-related molecular signals and a major domestication trait, the higher number of laticifer rings. We further show that HbPSK5, encoding the small-peptide hormone phytosulfokine (PSK), is a key domestication gene and closely correlated with the major domestication trait. The transcriptional activation of HbPSK5 by myelocytomatosis (MYC) members links PSK signaling to jasmonates in regulating the laticifer differentiation in rubber tree. Heterologous overexpression of HbPSK5 in Russian dandelion (Taraxacum kok-saghyz) can increase rubber content by promoting laticifer formation. Our results provide an insight into target genes for improving rubber tree and accelerating the domestication of other rubber-producing plants.
Publisher
Springer Science and Business Media LLC
Subject
General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry,Multidisciplinary
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