文献类型：期刊文献

英文题名：The chromosome-level genome of Akebia trifoliata as an important resource to study plant evolution and environmental adaptation in the Cretaceous

作者：Zhong, Shengfu[1,2,3] Li, Bin[4] Chen, Wei[1] Wang, Lili[5] Guan, Ju[1] Wang, Qiang[] Yang, Zujun[6] Yang, Hao[1] Wang, Xianshu[1] Yu, Xiaojiao[1] Fu, Peng[1] Liu, Hongchang[7] Chen, Chen[1] Tan, Feiquan[1,3] Ren, Tianheng[1] Shen, Jinliang[8] Luo, Peigao[1,2]

第一作者：Zhong, Shengfu

通信作者：Luo, PG[1];Luo, PG[2]

机构：[1]Sichuan Agr Univ, Key Lab Plant Genet & Breeding, 211 Huimin Rd, Chengdu 611130, Sichuan, Peoples R China;[2]Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, 2 Yuanmingyuan West Rd, Beijing 100193, Peoples R China;[3]Sichuan Agr Univ, Inst Ecol Agr, 211 Huimin Rd, Chengdu 611130, Sichuan, Peoples R China;[4]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Breeding & Forest Genet, 1 Dongxiaofu Xiangshan Rd, Beijing 100091, Peoples R China;[5]Biomarker Technol Co Ltd, 12 Fuqian St, Beijing 101300, Peoples R China;[6]Univ Elect Sci & Technol China, Sch Life Sci & Technol, Ctr Informat Biol, 2006 Xiyuan Ave West Hitech Zone, Chengdu 611731, Sichuan, Peoples R China;[7]Guizhou Univ, Guizhou Key Lab Propagat & Cultivat Med Plants, 2708 Huaxi South Ave Huaxi Dist, Guiyang 550025, Guizhou, Peoples R China;[8]Sichuan Agr Univ, Coll Forestry, 211 Huimin Rd Wenjiang Dist, Chengdu 611130, Sichuan, Peoples R China

年份：0

外文期刊名：PLANT JOURNAL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000888639000001)】；

基金：We thank Dr Sougong Zhang, Chinese Academy of Forestry, Beijing 100091, China, for supporting the sequencing. The authors would like to acknowledge support from the Science and Technology Department of Sichuan Province of China (2020YJ0331). Additional funding was also provided in particular by the Ya'an Science and Technology Bureau, Shimian County Science and Technology Bureau in Sichuan Province of China.

语种：英文

外文关键词：Akebia trifoliata; whole genome duplication; integrated analysis; plant evolution; ancient environment

摘要：The environmental adaptation of eudicots is the most reasonable explanation for why they compose the largest clade of modern plants (> 70% of angiosperms), which indicates that the basal eudicots would be valuable and helpful to study their survival and ability to thrive throughout evolutionary processes. Here, we detected two whole-genome duplication (WGD) events in the high-quality assembled Akebia trifoliata genome (652.73 Mb) with 24 138 protein-coding genes based on the evidence of intragenomic and intergenomic collinearity, synonymous substitution rate (K-S) values and polyploidization and diploidization traces; these events putatively occurred at 85.15 and 146.43 million years ago (Mya). The integrated analysis of 16 species consisting of eight basal and eight core eudicots further revealed that there was a putative ancient WGD at the early stage of eudicots (temporarily designated theta) at 142.72 Mya, similar to the older WGD of Akebia trifoliata, and a putative core eudicot-specific WGD (temporarily designated omega). Functional enrichment analysis of retained duplicate genes following the theta event is suggestive of adaptation to the extreme environment change in both the carbon dioxide concentration and desiccation around the Jurassic-Cretaceous boundary, while the retained duplicate genes following the omega event is suggestive of adaptation to the extreme droughts, possibly leading to the rapid spread of eudicots in the mid-Cretaceous. Collectively, the A. trifoliata genome experienced two WGD events, and the older event may have occurred at the early stage of eudicots, which likely increased plant environmental adaptability and helped them survive in ancient extreme environments.