文献类型：期刊文献

英文题名：Time-sequential detection of quantitative trait loci and candidate genes underlying the dynamic growth of Salix suchowensis

作者：Wei, Suyun[1];Yang, Guo[1,2];Yang, Yonghua[3];Yin, Tongming[1]

机构：[1]Nanjing Forestry Univ, Southern Modern Forestry Collaborat Innovat Ctr, Key Lab Tree Genet & Sivilcultural Sci Jiangsu Pr, Key Lab Tree Genet & Biotechnol,Educ Dept China, 159 Longpan Rd, Nanjing 210037, Peoples R China;[2]Shaoxing Univ, Sch Life Sci, 508 Huancheng West Rd, Shaoxing 312000, Zhejiang, Peoples R China;[3]Nanjing Univ, Coll Life Sci, 163 Xianlin Rd, Nanjing 210093, Peoples R China

年份：2022

卷号：42

期号：4

起止页码：877

外文期刊名：TREE PHYSIOLOGY

收录：SCI-EXPANDED(收录号：WOS:000764842700001)、、Scopus(收录号：2-s2.0-85128768204)、WOS

基金：The work is supported by the National Key Research and Development Plan of China (2021YFD2200202) and the Key Research and Development Project of Jiangsu Province, China (BE2021366). It was also supported by the PAPD (Priority Academic Program Development) program at Nanjing Forestry Univesity.

语种：英文

外文关键词：dynamic growth; long-term biological process; quantitative trait loci; transcriptome profiling

外文摘要：Elucidating the genetic factors underlying long-term biological processes remains challenging since the relevant genes and their effects may vary across different developmental stages. In this study, we carried out a large-scale field trial of the progeny of an F-1 full-sib pedigree of Salix suchowensis and measured plant height and ground diameter periodically over a time course of 240 days. With the obtained data, we characterized plant growth rhythms and performed time-sequential analyses of quantitative trait loci underlying the dynamic growth of the plants. The dynamic mapping of quantitative trait loci revealed that stem height and ground diameter were under the control of four quantitative trait loci, and the effects of these quantitative trait loci varied greatly throughout the growth process, in which two quantitative trait loci were found to exert a pleiotropic effect determining the correlation between stem height and ground diameter. The analysis of candidate genes in the target genetic intervals showed that the pleiotropic effect of the two quantitative trait loci arises from the colocalization of genes with independent effects on stem height and ground diameter. Further examination of the expression patterns of the candidate genes indicated that height and circumference growth involve different activities of leaf and cambium tissues. This study provides unprecedented information to help us understand the dynamic growth of plants and presents an applicable strategy for elucidating the genetic mechanism underlying a long-term biological process by using plant growth as an example.