文献类型：期刊文献

英文题名：Intraspecific diploidization of a halophyte root fungus drives heterosis

作者：Li, Zhongfeng[1,2] Zhu, Zhiyong[1,2,3] Qian, Kun[4,5] Tang, Boping[6] Han, Baocai[7] Zhong, Zhenhui[8] Fu, Tao[9] Zhou, Peng[10] Stukenbrock, Eva H.[11,12] Martin, Francis M.[2,13] Yuan, Zhilin[1,2]

第一作者：李忠风

通信作者：Yuan, ZL[1];Martin, FM[2];Yuan, ZL[2];Zhou, P[3];Martin, FM[4]

机构：[1]Chinese Acad Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Peoples R China;[3]Nanjing Forestry Univ, Nanjing 100071, Peoples R China;[4]Zhejiang Univ, Coll Life Sci, Hangzhou 310058, Zhejiang, Peoples R China;[5]La Trobe Univ, Sch Agr Biomed & Environm Sci, Dept Anim Plant & Soil Sci, Bundoora, Vic 3086, Australia;[6]Yancheng Teachers Univ, Sch Wetlands, Jiangsu Key Lab Bioresources Saline Soils, Yancheng 224002, Peoples R China;[7]Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China;[8]Sichuan Univ, Coll Life Sci, Minist Educ, Key Lab Bioresource & Ecoenvironm, Chengdu 610065, Peoples R China;[9]Shenzhen Zhuoyun Haizhi Med Res Ctr Co Ltd, Shenzhen 518063, Peoples R China;[10]Chinese Acad Agr Sci, Natl Key Facil Crop Gene Resources & Genet Improv, Inst Crop Sci, Beijing 100081, Peoples R China;[11]Univ Kiel, Environm Genom, D-24118 Kiel, Germany;[12]Max Planck Inst Evolutionary Biol, Max Planck Fellow Grp Environm Genom, D-24306 Plon, Germany;[13]Univ Lorraine, INRAE, UMR Interact Arbres Microorganisms, INRAE Grand Est Nancy, F-54280 Champenoux, France

年份：2024

卷号：15

期号：1

外文期刊名：NATURE COMMUNICATIONS

收录：;Scopus(收录号：2-s2.0-85198366663);WOS:【SCI-EXPANDED(收录号:WOS:001381534800007)】；

基金：This study was financially supported by the Fundamental Research Funds for the Central Non-profit Research of the Chinese Academy of Forestry (CAFYBB2020ZY002-1) and the National Natural Science Foundation of China (No. 32200097). This research was also supported by the Laboratory of Excellence ARBRE (ANR-11-LABX-0002-01) and the Huazhong Agricultural University, Wuhan, China (to F.M.M.).

语种：英文

摘要：How organisms respond to environmental stress is a key topic in evolutionary biology. This study focused on the genomic evolution of Laburnicola rhizohalophila, a dark-septate endophytic fungus from roots of a halophyte. Chromosome-level assemblies were generated from five representative isolates from structured subpopulations. The data revealed significant genomic plasticity resulting from chromosomal polymorphisms created by fusion and fission events, known as dysploidy. Analyses of genomic features, phylogenomics, and macrosynteny have provided clear evidence for the origin of intraspecific diploid-like hybrids. Notably, one diploid phenotype stood out as an outlier and exhibited a conditional fitness advantage when exposed to a range of abiotic stresses compared with its parents. By comparing the gene expression patterns in each hybrid parent triad under the four growth conditions, the mechanisms underlying growth vigor were corroborated through an analysis of transgressively upregulated genes enriched in membrane glycerolipid biosynthesis and transmembrane transporter activity. In vitro assays suggested increased membrane integrity and lipid accumulation, as well as decreased malondialdehyde production under optimal salt conditions (0.3M NaCl) in the hybrid. These attributes have been implicated in salinity tolerance. This study supports the notion that hybridization-induced genome doubling leads to the emergence of phenotypic innovations in an extremophilic endophyte.