Integrating unconditional and conditional QTLs to dissect the genetic basis of stem mechanical strength in Brassica napus L
文献类型： 外文期刊
作者： Yu, Kunjiang 1 ; Zhang, Wei 2 ; Guo, Yue 2 ; Zheng, Ming 3 ; Chen, Feng 2 ; Sun, Chengming 2 ; Hu, Maolong 2 ; Tian, Enta 1 ;
作者机构： 1.Guizhou Univ, Coll Agr, Guiyang 550025, Peoples R China
2.Jiangsu Acad Agr Sci, Minist Agr & Rural Affairs, Inst Ind Crops, Key Lab Cotton & Rapeseed, Nanjing 210014, Peoples R China
3.Chinese Acad Agr Sci, Minist Agr & Rural Affairs, Oil Crops Res Inst, Key Lab Biol & Genet Improvement Oil Crops, Wuhan 430062, Peoples R China
关键词： Brassica napus l; Unconditional QTL; Conditional QTL; Stem mechanical strength; Genetic mechanism
期刊名称：EUPHYTICA （ 影响因子：1.895； 五年影响因子：2.181 ）
ISSN： 0014-2336
年卷期： 2021 年 217 卷 3 期
页码：
收录情况： SCI
摘要： Stem mechanical strength (SMS) plays an important role in resisting stem dislodging. However, the genetic regulatory mechanisms underlying SMS in rapeseed remain unclear. In this study, a recombinant inbred line population containing 189 lines was used to investigate four SMS-related traits, namely stem breaking force (SBF), stem diameter (SD), stem weight (SW) and stem breaking strength (SBS). Accordingly, four conditional traits were also generated, namely SBF|SD, SBF|SW, SW|SD and SBS|SW. Quantitative trait locus (QTL) mapping for four unconditional SMS-related traits detected seven major QTLs, four of which were novel loci, with phenotypic contributions ranging from 10.41 to 27.22%. QTL mapping of conditional traits detected five major QTLs (including four novel loci), which explained 11.57 to 38.73% of the phenotypic variation. Comparative analyses between unconditional and conditional QTLs revealed that all 63 QTLs potentially govern biological processes (BPs) or unknown traits (UTs), which then influence SMS-related traits via 12 pathways. SBF was regulated by 13 unconditional QTLs via the QTL-BP-SD-SBF, QTL-BP-UTSD-SW-SBF, QTL-BP-SD-SW-SBF, and QTL-BP-UTSD&SW-SBF pathways, and by six conditional QTLs via the QTL-BP-SBF|SD-SBF and QTL-BP-SBF|SW-SBF pathways. SD was regulated by 18 unconditional QTLs via the QTL-BP-SD pathway, and SW by three regulatory pathways including QTL-BP-SD-SW, QTL-BP-UTSD-SW and QTL-BP-SW|SD-SW pathways. Finally, SBF potentially influences SMS via the SBF-SMS and SBF-SBS-SMS pathways. There were two additional regulatory pathways for SBS, namely QTL-BP-UTSW-SBS and QTL-BP-SBS|SW-SBS. In addition, 12 promising candidate genes were identified through multiple methods. These results contribute to our knowledge about the genetic regulatory mechanisms underlying SMS in Brassica napus.
- 相关文献
作者其他论文 更多>>
-
Construction of a high-density genetic map for yardlong bean and identification of ANT1 as a regulator of anthocyanin biosynthesis
作者：Zhang, Hongmei;Zhang, Wei;Liu, Xiaoqing;Chen, Xin;Chen, Huatao;Meng, Shan;Yan, Wei;Hui, Linchong;Chen, Wei
关键词：
-
Homoeologous exchanges contribute to branch angle variations in rapeseed: Insights from transcriptome, QTL-seq and gene functional analysis
作者：Sun, Chengming;Zhou, Xiaoying;Fu, Sanxiong;Wang, Xiaodong;Peng, Qi;Gao, Jianqin;Chen, Feng;Zhang, Wei;Hu, Maolong;Zhang, Jiefu;Wu, Jian;Liu, Huimin;Wang, Youping;Xue, Zhifei;Fu, Tingdong;Yi, Bin
关键词：Rapeseed; Branch angle; Homoeologous exchange; WGCNA; QTL-seq; WRKY40
-
A genome-wide association analysis for salt tolerance during the soybean germination stage and development of KASP markers
作者：Wang, Junyan;Zhou, Miaomiao;Su, Chengfu;Wang, Junyan;Zhou, Miaomiao;Zhang, Hongmei;Liu, Xiaoqing;Zhang, Wei;Wang, Qiong;Jia, Qianru;Chen, Huatao;Xu, Donghe;Chen, Huatao
关键词：soybean; salt tolerance; germination stage; genome-wide association analysis; KASP marker
-
Therapeutic efficacy of a K5-specific phage and depolymerase against Klebsiella pneumoniae in a mouse model of infection
作者：Li, Pei;Zheng, Xiangkuan;Xu, Sixiang;Zhou, Yu;Qin, Xiayan;Hu, Zimeng;Ma, Jiale;Zhang, Wei;Li, Pei;Zheng, Xiangkuan;Xu, Sixiang;Zhou, Yu;Hu, Zimeng;Zhang, Wei;Guo, Genglin;Yu, Yanfei;Tan, Zhongming;Chen, Long
关键词：Klebsiella pneumoniae; phage; depolymerase; K5; hypervirulent; capsule
-
Selected Electrosynthesis of 3-Aminopyrazoles from α,β-Alkynic Hydrazones and Secondary Amines
作者：Tang, Dong;Zhang, Wei;Ji, Jingwen;Jiang, Rui;Wan, Yaya;Zhou, Pengjuan;Ma, Wei
关键词：
-
Genome-Wide Association Study on Candidate Genes Associated with Soybean Stem Pubescence and Hilum Colors
作者：Zhou, Miaomiao;Wang, Junyan;Su, Chengfu;Chen, Huatao;Wang, Qiong;Chen, Huatao;Hu, Shengyan;Xiong, Yawen;Chen, Huatao;Jia, Qianru;Zhang, Hongmei;Zhang, Wei;Wang, Qiong
关键词：soybean; stem pubescence color; hilum color; genome-wide association study; SNP; candidate gene
-
Genome-Wide Association Study and Identification of Candidate Genes Associated with Seed Number per Pod in Soybean
作者：Wang, Qiong;Zhang, Wei;Xu, Wenjing;Zhang, Hongmei;Liu, Xiaoqing;Chen, Xin;Chen, Huatao;Chen, Huatao
关键词：soybean; seed number per pod; leaf characteristics; genome-wide association study; single nucleotide polymorphism
