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>>
-
Hatcheries' contamination: the molecular characterization and pathogenicity of Mycoplasma gallisepticum isolates in China
作者：Fang, Huanxin;Li, Qi;Li, Pei;Xu, Sixiang;Tan, Libin;Zhu, Xihui;Zheng, Xiangkuan;Tian, Rui;Qi, Zitai;Li, Chenxi;Yu, Yanfei;Zhang, Wei;Zhang, Chunyan;Qi, Zitai;Yu, Yanfei
关键词：Mycoplasma gallisepticum; Hatcheries' contamination; Pipping failure embryos; China I Clade; Vertical and horizontal transmission
-
Knocking out artificially selected gene GmAOC4H8 improves germination in soybean
作者：Zhang, Wei;Li, Songsong;Xu, Wenjing;Wang, Qiong;Zhang, Hongmei;Liu, Xiaoqing;Chen, Xin;Chen, Huatao;Chen, Huatao;Xu, Donghe
关键词：
-
FabG moonlights as an extracellular adhesin mediates cytoadhesion of Streptococcus suis via interaction with plasminogen
作者：Guo, Genglin;Zhou, Yu;Li, Pei;Yu, Yanfei;Zhang, Wei;Zhou, Yu;Li, Pei;Zhang, Wei;Li, Quan;Yu, Yanfei
关键词：Streptococcus suis; Adhesin; FabG; Plasminogen; Extracellular matrix; Complement
-
Optimized straw incorporation depth can improve the nitrogen uptake and yield of rapeseed by promoting fine root development
作者：Wang, Chunyun;Wang, Zongkai;Lou, Hongxiang;Wang, Xianling;Shao, Dongli;Tan, Xiaoqiang;Liu, Mengzhen;Wang, Bo;Kuai, Jie;Wang, Jing;Xu, Zhenghua;Zhou, Guangsheng;Zhao, Jie;Wang, Chunyun;Gao, Jianqin;Zhang, Jiefu
关键词：Straw incorporation; Rapeseed; Nitrogen; Root; Yield
-
A rare dominant allele DYSOC1 determines seed coat color and improves seed oil content in Brassica napus
作者：Li, Huaixin;Wu, Mingli;Yin, Yongtai;Xia, Yutian;Cheng, Xin;Chen, Kang;Yan, Shuxiang;Xiong, Yiyi;He, Jianjie;Fan, Shipeng;Ding, Yiran;Zhang, Libin;Jia, Haibo;Li, Maoteng;Chao, Hongbo;Yin, Yongtai;Wang, Xiaodong;Zhang, Libin;Zhang, Chunyu
关键词：
-
Optimized tillage regimes in a rice-oilseed rape rotation system enhance system productivity by delaying post-flowering senescence
作者：Wang, Chunyun;Wang, Zongkai;Lou, Hongxiang;Wang, Xianling;Tan, Xiaoqiang;Shao, Dongli;Liu, Mengzhen;Wang, Bo;Kuai, Jie;Wang, Jing;Xu, Zhenghua;Zhou, Guangsheng;Zhao, Jie;Wang, Chunyun;Gao, Jianqin;Zhang, Jiefu
关键词：Moderate deep tillage; Oilseed rape; Rice; Root; Yield
-
Integrating QTL mapping and GWAS to decipher the genetic mechanisms behind the calcium contents of Brassica napus shoots
作者：Xiang, Yanan;Wang, Xiaodong;Zhang, Jiefu;Xiang, Yanan;Chen, Feng;Shi, Rui;Yang, Tinghai;Zhang, Wei;Zhou, Xiaoying;Wang, Chunyun;Sun, Chengming;Fu, Sanxiong;Wang, Xiaodong;Zhang, Jiefu;Shen, Yue
关键词：
Brassica napus shoots; calcium concentration; QTL mapping; GWAS; candidate genes
