Genomic insight into domestication of rubber tree

Jinquan Chao, Shaohua Wu, Minjing Shi, Xia Xu, Qiang Gao, Huilong Du, Bin Gao, Dong Guo, Shuguang Yang, Shixin Zhang, Yan Li, Xiuli Fan, Chunyan Hai, Liquan Kou, Jiao Zhang, Zhiwei Wang, Yan Li, Wenbo Xue, Jiang Xu, Xiaomin Deng, Xiao Huang, Xinsheng Gao, Xiaofei Zhang, Yanshi Hu, Xia Zeng, Weiguo Li, Liangsheng Zhang, Shiqing Peng, Jilin Wu, Bingzhong Hao, Xuchu Wang, Hong Yu, Jiayang Li (), Chengzhi Liang () and Wei-Min Tian ()
Additional contact information
Jinquan Chao: Chinese Academy of Tropical Agricultural Sciences
Shaohua Wu: Chinese Academy of Tropical Agricultural Sciences
Minjing Shi: Chinese Academy of Tropical Agricultural Sciences
Xia Xu: Chinese Academy of Sciences
Qiang Gao: Zhejiang University
Huilong Du: Chinese Academy of Sciences
Bin Gao: Chinese Academy of Sciences
Dong Guo: Chinese Academy of Tropical Agricultural Sciences
Shuguang Yang: Chinese Academy of Tropical Agricultural Sciences
Shixin Zhang: Chinese Academy of Tropical Agricultural Sciences
Yan Li: Chinese Academy of Tropical Agricultural Sciences
Xiuli Fan: Chinese Academy of Sciences
Chunyan Hai: Chinese Academy of Sciences
Liquan Kou: Chinese Academy of Sciences
Jiao Zhang: BGI-Shenzhen
Zhiwei Wang: BGI-Shenzhen
Yan Li: BGI-Shenzhen
Wenbo Xue: BGI-Shenzhen
Jiang Xu: China Academy of Chinese Medical Sciences
Xiaomin Deng: Chinese Academy of Tropical Agricultural Sciences
Xiao Huang: Chinese Academy of Tropical Agricultural Sciences
Xinsheng Gao: Chinese Academy of Tropical Agricultural Sciences
Xiaofei Zhang: Chinese Academy of Tropical Agricultural Sciences
Yanshi Hu: Chinese Academy of Tropical Agricultural Sciences
Xia Zeng: Chinese Academy of Tropical Agricultural Sciences
Weiguo Li: Chinese Academy of Tropical Agricultural Sciences
Liangsheng Zhang: Zhejiang University
Shiqing Peng: Chinese Academy of Tropical Agricultural Sciences
Jilin Wu: Chinese Academy of Tropical Agricultural Sciences
Bingzhong Hao: Chinese Academy of Tropical Agricultural Sciences
Xuchu Wang: Guizhou University
Hong Yu: Chinese Academy of Sciences
Jiayang Li: Chinese Academy of Sciences
Chengzhi Liang: Chinese Academy of Sciences
Wei-Min Tian: Chinese Academy of Tropical Agricultural Sciences

Nature Communications, 2023, vol. 14, issue 1, 1-13

Abstract: Abstract Understanding 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.

Date: 2023
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DOI: 10.1038/s41467-023-40304-y

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