文献类型：期刊文献

英文题名：Genetic architecture of leaf morphological and physiological traits in a Populus deltoides 'Danhong' x P. simonii 'Tongliao1' pedigree revealed by quantitative trait locus analysis

作者：Sun, Pei[1] Jia, Huixia[1] Cheng, Xingqi[1] Zhang, Yahong[1] Li, Jianbo[2] Zhang, Lei[1] Lu, Mengzhu[1] Zhang, Jin[1,3] Hu, Jianjun[1]

通信作者：Zhang, J[1];Hu, JJ[1];Zhang, J[2]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Key Lab Tree Breeding & Cultivat,State Forestry &, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Expt Ctr Forestry North China, Beijing 102300, Peoples R China;[3]Oak Ridge Natl Lab, Biosci Div, POB 2009, Oak Ridge, TN 37831 USA

年份：2020

卷号：16

期号：3

外文期刊名：TREE GENETICS & GENOMES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000534962500001)】；

基金：This work was supported by the National Key Research and Development Program of China (2017YFD0600201), the National Natural Science Foundation of China (31570669), and the National Key Program on Transgenic Research (2018ZX08020002).

语种：英文

外文关键词：Populus; Whole genome re-sequencing; Linkage map; Leaf morphological and physiological traits; Quantitative trait locus; Co-expression

摘要：Understanding the genetic architecture of leaf morphological and physiological traits will help plant breeders develop high biomass poplar genotypes. Quantitative trait locus (QTL) studies combining next-generation sequencing techniques can advance our understanding of the genetic basis of complex traits. In this study, we measured 13 leaf morphological and physiological traits and identified quantitative trait loci (QTLs) in a Populus deltoides 'Danhong' x P. simonii 'Tongliao1' F-1 population (500 progenies) using a high-density genetic map constructed by whole genome re-sequencing. This linkage map consisted of 5796 single nucleotide polymorphism (SNP) markers assigned to 19 linkage groups (LGs), spanning 2683.80 centimorgans (cM) of genetic length, with an average marker density of 0.46 cM. We identified 109 QTLs on 18 LGs for leaf morphological traits and 55 QTLs on 14 LGs for leaf physiological traits. One-hundred eight putative candidate genes were identified within the candidate genomic region. Co-expression network and gene ontology enrichment analyses suggested that these candidate genes were involved in the photosynthetic process. The differential expression patterns of the CYCLIN (Potri.015G112200) and RED CHLOROPHYLL REDUCTASE (Potri.007G043600) genes between two parents indicated their potential roles in leaf morphological and physiological traits. These findings decipher the genetic architecture of leaf morphological and physiological traits in the P. deltoides 'Danhong' x P. simonii 'Tongliao1' pedigree and provide candidate genes for future poplar genetic improvement.