Genetic Analyses, BSA-Seq, and Transcriptome Analyses Reveal Candidate Genes Controlling Leaf Plastochron in Rapeseed (Brassica napus L.)
文献类型： 外文期刊
作者： Qin, Mengfan 1 ; Liu, Xiang 1 ; Song, Jia 1 ; Zhao, Feixue 1 ; Shi, Yiji 1 ; Xu, Yu 1 ; Guo, Zhiting 1 ; Zhang, Tianye 1 ; Wu, Jiapeng 1 ; Wang, Jinxiong 3 ; Li, Wu 2 ; Li, Keqi 1 ; Li, Shimeng 3 ; Huang, Zhen 1 ; Xu, Aixia 1 ;
作者机构： 1.Northwest A&F Univ, Coll Agron, Yangling 712100, Peoples R China
2.Guangdong Acad Agr Sci, Crop Res Inst, Guangzhou 510640, Peoples R China
3.Xizang Acad Agr & Anim Husb Sci, Inst Agr Sci, Lhasa 850000, Peoples R China
关键词： Brassica napus L.; leaf plastochron; genetic analysis; BSA-seq; gene expression; candidate gene
期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）
ISSN： 2223-7747
年卷期： 2025 年 14 卷 11 期
页码：
收录情况： SCI
摘要： The leaf plastochron serves as an indicator of the rate of leaf appearance, biomass accumulation, and branch number, while also impacting plant architecture and seed yield. However, research on the leaf plastochron of crops remains limited. In this study, 2116C exhibited a rapid leaf plastochron compared to ZH18 during both rosette and bud periods. There were significant positive correlations among the leaf plastochron and primary branch number of the F-2 populations (r ranging from 0.395 to 0.635, p < 0.01). Genetic analyses over two years demonstrated that two equally dominant genes might govern the leaf plastochron. Through bulk segregant analysis sequencing (BSA-seq), three novel genomic intervals were identified on chromosomes A02 (9.04-9.48 Mb and 13.52-13.66 Mb) and A04 (19.84-20.14 Mb) of ZS11 and Darmor-bzh reference genomes. By gene functional annotations, single-nucleotide variation (SNV) analyses, transcriptome data from parents, genetic progeny, and natural accessions, we identified ten candidate genes within the intervals, including FLOWERING LOCUS T, RGL1, MYB-like, CYP96A8, BLH3, NIT2, ASK6, and three CLAVATA3/ESR (CLE)-related genes. These findings lay the molecular foundation for further exploration into the leaf plastochron and the implications in plastochron-related breeding in rapeseed.
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