文献类型：期刊文献

英文题名：Genome-Wide Association Study With Growth-Related Traits and Secondary Metabolite Contents in Red- and White-Heart Chinese Fir

作者：Cao, Sen[1] Duan, Hongjing[1,2] Sun, Yuhan[1] Hu, Ruiyang[1,3] Wu, Bo[1] Lin, Jun[4] Deng, Wenjian[4] Li, Yun[1] Zheng, Huiquan[5]

第一作者：Cao, Sen

通信作者：Li, Y[1];Zheng, HQ[2]

机构：[1]Beijing Forestry Univ, Coll Biol Sci & Technol, Natl Engn Lab Tree Breeding, Key Lab Genet & Breeding Forest Trees & Ornamental, Beijing, Peoples R China;[2]Chinese Acad Sci, Expt Sch Affiliated, Beijing, Peoples R China;[3]Chinese Acad Forestry, Expt Ctr Forestry North China, Beijing, Peoples R China;[4]Longshan State Forest Farm Lechang, Lechang, Peoples R China;[5]Guangdong Acad Forestry, Guangdong Prov Key Lab Silviculture Protect & Util, Guangzhou, Peoples R China

年份：2022

卷号：13

外文期刊名：FRONTIERS IN PLANT SCIENCE

收录：;Scopus(收录号：2-s2.0-85134195811);WOS:【SCI-EXPANDED(收录号:WOS:000826972200001)】；

基金：Funding This research was supported by the Key-Area Research and Development Program of Guangdong Province (no. 2020B020215001), the Science and Technology Research Project of Beijing Forestry University (2018WS01), and the National Natural Science Foundation of China (no. 31972956).

语种：英文

外文关键词：Chinese fir; secondary metabolite; growth-related traits; single nucleotide polymorphism marker; flavonoid

摘要：Chinese fir [Cunninghamia lanceolata (Lamb.) Hook] is an important evergreen coniferous tree species that is widely distributed in many southern provinces of China and has important economic value. The Chinese fir accounts for 1/4 and 1/3 of the total artificial forest area and stock volume, respectively. Red-heart Chinese fir is popular in the market because of its high density and red heartwood. The long-growth cycle hindered the breeding process of Chinese fir, while molecular marker-assisted breeding could accelerate it. However, Chinese fir, a perennial conifer species, has a large genome, which has not yet been published. In this study, the growth-related traits and secondary metabolite contents of red- and white-heart Chinese fir were measured and found to be different between them. There are extremely significant differences among growth-related traits (p < 0.001), but secondary metabolite contents have different correlations due to differences in chemical structure. Moreover, genotype effect analysis of the substantially correlated single nucleotide polymorphisms (SNPs) revealed that most of the loci related to each growth-related traits were different from each other, indicating a type specificity of the genes regulated different growth-related traits. Furthermore, among the loci related to secondary metabolite contents, nine loci associated with multiple metabolite phenotypes such as Marker21022_4, Marker21022_172, Marker24559_31, Marker27425_37, Marker20748_85, Marker18841_115, Marker18841_198, Marker65846_146, and Marker21486_163, suggesting the presence of pleiotropic genes. This study identified the potential SNP markers associated with secondary metabolites in Chinese fir, thus setting the basis for molecular marker-assisted selection.