文献类型：期刊文献

英文题名：Comparative Analyses of 35 Complete Chloroplast Genomes from the Genus Dalbergia (Fabaceae) and the Identification of DNA Barcodes for Tracking Illegal Logging and Counterfeit Rosewood

作者：Hong, Zhou[1] He, Wenchuang[2] Liu, Xiaojing[1] Tembrock, Luke R.[3] Wu, Zhiqiang[2,4] Xu, Daping[1] Liao, Xuezhu[2]

第一作者：洪舟

通信作者：Xu, DP[1];Wu, ZQ[2];Liao, XZ[2];Wu, ZQ[3]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, State Key Lab Tree Genet & Breeding, Guangzhou 510520, Peoples R China;[2]Chinese Acad Agr Sci, Genome Anal Lab, Shenzhen Branch, Guangdong Lab Lingnan Modern Agr,Minist Agr,Agr E, Shenzhen 518120, Peoples R China;[3]Colorado State Univ, Dept Agr Biol, Ft Collins, CO 80523 USA;[4]Kunpeng Inst Modern Agr Foshan, Foshan 528200, Peoples R China

年份：2022

卷号：13

期号：4

外文期刊名：FORESTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000787005500001)】；

基金：This study was co-supported by the Research Funds for the Central Non-profit Research Institution of Chinese Academy of Forestry (CAFYBB2020SZ005), National Natural Science Foundation of China (31500537), and the Chinese Academy of Agricultural Sciences Elite Youth Program to Zhiqiang Wu (JCKY2020-07).

语种：英文

外文关键词：forensic biology; phylogeny; CITES; endangered species; forest conservation

摘要：The genus Dalbergia contains more than 200 species, several of which are trees that produce traditional medicines and extremely high-value timber commonly referred to as rosewood. Due to the rarity of these species in the wild, the high value of the timber, and a growing international illicit trade, CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora) has listed the entire genus in appendix II and the species Dalbergia nigra in appendix I because species in this genus are considered at risk of extinction. Given this, and the fact that species or even genus level determination is nearly impossible from cut timber morphology, alternative molecular methods are needed to identify and track intercepted rosewood. To better identify rosewood using molecular methods, we sequenced and assembled eight chloroplast genomes including D. nigra as well as conducted comparative analyses with all other available chloroplast genomes in Dalbergia and closely related lineages. From these analyses, numerous repeats including simple sequence repeats (SSR) and conserved nucleotide polymorphisms unique to subclades within the genus were detected. From phylogenetic analysis based on the CDS from 77 chloroplast genes, the groups Siam rosewood and scented rosewood resolved as monophyletic, supporting the morphological traits used to delimit these species. In addition, several instances of paraphyly and polyphyly resulting from mismatches between taxonomic determinations and phylogenetic tree topology were identified. Ultimately, the highly variable regions in the chloroplast genomes will provide useful plastid markers for further studies regarding the identification, phylogeny, and population genetics of Dalbergia species, including those frequently intercepted in illegal trade.