Plastid phylogenomics improve phylogenetic resolution in the Lauraceae  

作　　者：Yu Song Wen-Bin Yu Yun-Hong Tan Jian-Jun Jin Bo Wang Jun-Bo Yang Bing Liu Richard T.Corlett 

机构地区：[1]Centerfor Integrative Conservation,Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Mengla 666303,Yunnan,China [2]Center of Conservation Biology,Core Botanical Cardens,Chinese Academy of Sciences,Mengla 666303,Yunnan,China [3]Southeast Asia Biodiversity Research Institute,Chinese Academy of Sciences,Yezin,Nay Pyi Taw 05282,Myanmar [4]Germplasm Bank of Wild Species,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650201,China [5]State Key Laboratory of Systematic and Evolutionary Botany,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China [6]Sino-African Joint Research Center,Chinese Academy of Sciences,Wuhan 430074,China

出　　处：《Journal of Systematics and Evolution》2020年第4期423-439,共17页植物分类学报（英文版）

基　　金：This work was supported by a grant of the Large-scale Scientific Facilities,CAS(No.2017-LSF-GBOWS-02);the CAS 135 Program(2017XTBG-T03);the CAS“Light of West China”Program(Y7XB061B01);the National Natural Science Foundation of China(Nos.31600531 and 31500165);the Southeast Asia Biodiversity Research Institute,CAS(Y4ZK111B01);CAS International Research and Education Development Program(SAJC201613).

摘　　要：The family Lauraceae is a major component of tropical and subtropical forests worldwide,and includes some commercially important timber trees and medicinal plants.However,phylogenetic relationships within Lauraceae have long been problematic due to low sequence divergence in commonly used markers,even between morphologically distinct taxa within the family.Here we present phylogenetic analyses of 43 newly generated Lauraceae plastomes together with 77 plastomes obtained from GenBank,representing 24 genera of Lauraceae and 17 related families of angiosperms,plus nine barcodes from 19 additional species in 18 genera of Lauraceae,in order to reconstruct highly supported relationships for the Lauraceae.Our phylogeny supports the relationships:sisterhood of the Lauraceae and a clade containing Hemandiaceae and Monimiaceae,with Atherospermataceae and Gomortegaceae being the next sister groups,followed by Calycanthaceae.Our results highlight a monophyletic Lauraceae,with nine well-supported clades as follows:Hypodaphnis clade,Beilschmiedia-Cryptocarya clade,Cassytha clade,Neocinnamomum clade,Caryodaphnopsis clade,Chlorocardium-Mezilaurus clade,Machilus-Persea clade,Cinnamomum-Ocotea clade,and Laurus-Neolitsea clade.The topology recovered here is consistent with the patterns of plastome structural evolution and morphological synapomorphies reported previously.More specifically,flower sex,living type,inflorescence type,ovary position,anther locus number,leaf arrangement,leaf venation,lateral vein number,tree height,and inflorescence location all represent morphological synapomorphies of different lineages.Our findings have taxonomic implications and two new tribes,Caryodaphnopsideae and Neocinnamomeae,are described,and the composition of four other tribes is updated.The phylogeny recovered here provides a robust phylogenetic framework through which to address the evolutionary history of the Magnoliids,the third-largest group of Mesangiospermae.

关 键 词：CHLOROPLAST Laurales magnoliids phylogenetic relationships 

分 类 号：Q95[生物学—动物学]