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.

Understanding the genetic basis of rubber tree domestication is critical for improving natural rubber production. Here, the authors assemble the genome of the rubber tree clone CATAS8-79 and conduct population and genetic association analyses to reveal the function of phytosulfokine in regulating number of laticifer rings.

Details

Title
Genomic insight into domestication of rubber tree
Author
Chao, Jinquan 1   VIAFID ORCID Logo  ; Wu, Shaohua 1 ; Shi, Minjing 1 ; Xu, Xia 2 ; Gao, Qiang 3 ; Du, Huilong 4 ; Gao, Bin 5   VIAFID ORCID Logo  ; Guo, Dong 6 ; Yang, Shuguang 1 ; Zhang, Shixin 1 ; Li, Yan 1 ; Fan, Xiuli 7 ; Hai, Chunyan 7 ; Kou, Liquan 2   VIAFID ORCID Logo  ; Zhang, Jiao 8 ; Wang, Zhiwei 8   VIAFID ORCID Logo  ; Xue, Wenbo 8 ; Xu, Jiang 9   VIAFID ORCID Logo  ; Deng, Xiaomin 1 ; Huang, Xiao 10 ; Gao, Xinsheng 1 ; Zhang, Xiaofei 1 ; Hu, Yanshi 1 ; Zeng, Xia 1 ; Li, Weiguo 1 ; Zhang, Liangsheng 11 ; Peng, Shiqing 6 ; Wu, Jilin 10 ; Hao, Bingzhong 10 ; Wang, Xuchu 12 ; Yu, Hong 2   VIAFID ORCID Logo  ; Li, Jiayang 13   VIAFID ORCID Logo  ; Liang, Chengzhi 7   VIAFID ORCID Logo  ; Tian, Wei-Min 1 

1  Chinese Academy of Tropical Agricultural Sciences, National Key Laboratory for Tropical Crop Breeding, Sanya, China (GRID:grid.453499.6) (ISNI:0000 0000 9835 1415); Chinese Academy of Tropical Agricultural Sciences, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Genetic Resources of Rubber Tree, Rubber Research Institute, Haikou, China (GRID:grid.453499.6) (ISNI:0000 0000 9835 1415); Chinese Academy of Tropical Agricultural Sciences, State Key Laboratory Breeding Base of Cultivation and Physiology for Tropical Crops, Rubber Research Institute, Haikou, China (GRID:grid.453499.6) (ISNI:0000 0000 9835 1415) 
2  Chinese Academy of Sciences, State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Beijing, China (GRID:grid.9227.e) (ISNI:0000000119573309) 
3  Zhejiang University, Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Hangzhou, China (GRID:grid.13402.34) (ISNI:0000 0004 1759 700X); Life Science Park, Qi Biodesign, Beijing, China (GRID:grid.13402.34) 
4  Chinese Academy of Sciences, State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Beijing, China (GRID:grid.9227.e) (ISNI:0000000119573309); Hebei University, School of Life Sciences, Institute of Life Sciences and Green Development, Baoding, China (GRID:grid.256885.4) (ISNI:0000 0004 1791 4722); University of Chinese Academy of Sciences, Beijing, China (GRID:grid.410726.6) (ISNI:0000 0004 1797 8419) 
5  Chinese Academy of Sciences, Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Beijing, China (GRID:grid.9227.e) (ISNI:0000000119573309) 
6  Chinese Academy of Tropical Agricultural Sciences, Ministry of Agriculture and Rural Affairs Key Laboratory of Tropical Crop Biotechnology, Institute of Tropical Bioscience and Biotechnology, Haikou, China (GRID:grid.453499.6) (ISNI:0000 0000 9835 1415) 
7  Chinese Academy of Sciences, State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Beijing, China (GRID:grid.9227.e) (ISNI:0000000119573309); University of Chinese Academy of Sciences, Beijing, China (GRID:grid.410726.6) (ISNI:0000 0004 1797 8419) 
8  BGI-Shenzhen, BGI Genomics, Shenzhen, China (GRID:grid.21155.32) (ISNI:0000 0001 2034 1839) 
9  China Academy of Chinese Medical Sciences, Institute of Chinese Materia Medica, Beijing, China (GRID:grid.410318.f) (ISNI:0000 0004 0632 3409) 
10  Chinese Academy of Tropical Agricultural Sciences, Ministry of Agriculture and Rural Affairs Key Laboratory of Biology and Genetic Resources of Rubber Tree, Rubber Research Institute, Haikou, China (GRID:grid.453499.6) (ISNI:0000 0000 9835 1415); Chinese Academy of Tropical Agricultural Sciences, State Key Laboratory Breeding Base of Cultivation and Physiology for Tropical Crops, Rubber Research Institute, Haikou, China (GRID:grid.453499.6) (ISNI:0000 0000 9835 1415) 
11  Zhejiang University, Genomics and Genetic Engineering Laboratory of Ornamental Plants, College of Agriculture and Biotechnology, Hangzhou, China (GRID:grid.13402.34) (ISNI:0000 0004 1759 700X) 
12  Guizhou University, Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region, Ministry of Education, Institute of Agro-Bioengineering, College of Life Sciences, Guiyang, China (GRID:grid.443382.a) (ISNI:0000 0004 1804 268X) 
13  Chinese Academy of Sciences, State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Beijing, China (GRID:grid.9227.e) (ISNI:0000000119573309); University of Chinese Academy of Sciences, Beijing, China (GRID:grid.410726.6) (ISNI:0000 0004 1797 8419); Hainan Yazhou Bay Seed Laboratory, Sanya, China (GRID:grid.410726.6) 
Pages
4651
Publication year
2023
Publication date
2023
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41467-023-40304-y
ProQuest document ID
2844932430
Copyright
© The Author(s) 2023. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.