Wang Xu, Yan Ming, Cui Shanshan, Li Fang, Zhao Qingqing, Wang Qingnan, Jiang Bin, Huang Yixin, Sun Yang, Kong Xiangdong
Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, Key Laboratory of Biotic Environment and Ecological Safety in Anhui Province, College of Life Sciences, Anhui Normal University, Wuhu, Anhui, 241000, China.
Key Laboratory of Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
BMC Genomics. 2025 May 16;26(1):495. doi: 10.1186/s12864-025-11662-2.
Long-term geographical isolation and the different directions of domestication can cause a large number of genome variations. Population genetic analysis based on a single reference genome cannot capture all the variation information. Pan-genome construction is an effective way to overcome this problem. Resequencing data from 683 common bean landraces and breeding lines provided a pan-genome construction data resource. For the first time, for common bean pan-genome construction, 305 Mb non-reference contigs and 10,452 novel genes were identified. Among these new genes, 373 resistance gene analogs containing 372 variable genes were identified and used to narrow down the candidate genes in Pseudomonas syringae pv. phaseolicola resistance quantitative trait locus interval of the common bean. Transcriptome analysis of multiple biotic and abiotic stresses reveals that gene expression patterns are organ-, stress-, and gene conservation-specific. Core and shell genes may be co-expressed in all samples and may have functional complementarity to maintain the stability of plant growth. Within pathways, 8990 and 30,272 mutual exclusivity and co-occurrence gene presence-absence variations (PAVs) were discovered respectively, providing further insights into the functional complementarity of genes. In conclusion, our study provides a comprehensive genome resource, which will be useful for further common bean breeding and study.
长期的地理隔离和不同的驯化方向会导致大量的基因组变异。基于单一参考基因组的群体遗传分析无法捕获所有的变异信息。泛基因组构建是克服这一问题的有效方法。来自683个普通菜豆地方品种和育种系的重测序数据提供了泛基因组构建的数据资源。首次针对普通菜豆泛基因组构建,鉴定出3.05 Mb的非参考重叠群和10452个新基因。在这些新基因中,鉴定出373个抗性基因类似物,其中包含372个可变基因,并用于缩小菜豆丁香假单胞菌菜豆致病变种抗性数量性状位点区间内的候选基因范围。对多种生物和非生物胁迫的转录组分析表明,基因表达模式具有器官、胁迫和基因保守特异性。核心基因和外壳基因可能在所有样本中共同表达,并且可能具有功能互补性以维持植物生长的稳定性。在各通路内,分别发现了8990个和30272个互斥和共现基因的存在-缺失变异(PAV),为基因的功能互补性提供了进一步的见解。总之,我们的研究提供了一个全面的基因组资源,这将有助于进一步开展普通菜豆的育种和研究。
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