文献类型：期刊文献

英文题名：Concept for gene conservation strategy for the endangered Chinese yellowhorn, Xanthoceras sorbifolium, based on simulation of pairwise kinship coefficients

作者：El-Kassaby, Yousry A.[1] Wang, Qing[1,2] Wang, Tongli[1] Ratcliffe, Blaise[1] Bi, Quan-Xin[3] Wang, Zhou[4,5] Mao, Jian-Feng[6] Guan, Wenbin[2]

第一作者：El-Kassaby, Yousry A.

通信作者：El-Kassaby, YA[1]

机构：[1]Univ British Columbia, Fac Forestry, Dept Forest & Conservat Sci, Vancouver, BC V6T 1Z4, Canada;[2]Beijing Forestry Univ, Sch Nat Conservat, Beijing 100083, Peoples R China;[3]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[4]Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Ec, Guangdong Prov Key Lab Appl Bot, South China Bot Garden, Guangzhou 510650, Guangdong, Peoples R China;[5]Univ Chinese Acad Sci, Beijing 100049, Peoples R China;[6]Beijing Forestry Univ, Beijing Adv Innovat Ctr Tree Breeding Mol Design, Natl Engn Lab Tree Breeding,Minist Educ,Coll Biol, Key Lab Genet & Breeding Forest Trees & Ornamenta, Beijing 100083, Peoples R China

年份：2019

卷号：432

起止页码：976-982

外文期刊名：FOREST ECOLOGY AND MANAGEMENT

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000455068700095)】；

基金：This research is supported by the State Forestry and Grassland Administration of the People's Republic of China (Reference No. YYJY20170920A) Endowment to W.G. and the Natural Sciences and Engineering Research Council of Canada Discovery Grant to YAE.

语种：英文

外文关键词：Microsatellites; Genetic diversity; Conservation; Pairwise kinship relationship; Yellowhorn

摘要：A molecular markers-based conservation strategy framework for the endemic endangered Chinese yellowhorn, Xanthoceras sorbifolium, is developed. The method utilizes pairwise kinship coefficients, a measure of genetic similarity/dissimilarity, between individuals and contrasts two simulated mating schemes that either promote "no co-ancestry" or "co-ancestry" through multiple matings of particular individuals as well as a "hybrid" scenario involving both "no co-ancestry" and "co-ancestry" mating schemes. Selection of mating individuals is focused on maximizing genetic dissimilarity, hence capturing maximum genetic diversity. These approaches were compared on a population of 79 ancient yellowhorn trees scattered across 13 populations. Simulated matings were evaluated based on their average pairwise kinship, effective population size, and average number of alleles/locus. In this regard, no co-ancestry has been proven to be superior to co-ancestry mating scheme; however, co-ancestry offered opportunities for increasing effective population size, a desirable attribute for combating the detrimental effect of genetic drift. The hybrid approach, with reduced number of crosses, produced acceptable condition with maximum genetic diversity and high effective population size and genetic dissimilarity among the produced offspring. The advantages and disadvantages of marker-based gene conservation are highlighted and discussed. Subject area: Conservation genetics and biodiversity.