确定普通菜豆炭疽病抗性的元数量性状位点。
Delineating meta-quantitative trait loci for anthracnose resistance in common bean ( L.).
作者信息
Shafi Safoora, Saini Dinesh Kumar, Khan Mohd Anwar, Bawa Vanya, Choudhary Neeraj, Dar Waseem Ali, Pandey Arun K, Varshney Rajeev Kumar, Mir Reyazul Rouf
机构信息
Division of Genetics and Plant Breeding, Faculty of Agriculture, SKUAST-Kashmir, Wadura, India.
Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, Punjab, India.
出版信息
Front Plant Sci. 2022 Aug 25;13:966339. doi: 10.3389/fpls.2022.966339. eCollection 2022.
Anthracnose, caused by the fungus , is one of the devastating disease affecting common bean production and productivity worldwide. Several quantitative trait loci (QTLs) for anthracnose resistance have been identified. In order to make use of these QTLs in common bean breeding programs, a detailed meta-QTL (MQTL) analysis has been conducted. For the MQTL analysis, 92 QTLs related to anthracnose disease reported in 18 different earlier studies involving 16 mapping populations were compiled and projected on to the consensus map. This meta-analysis led to the identification of 11 MQTLs (each involving QTLs from at least two different studies) on 06 bean chromosomes and 10 QTL hotspots each involving multiple QTLs from an individual study on 07 chromosomes. The confidence interval (CI) of the identified MQTLs was found 3.51 times lower than the CI of initial QTLs. Marker-trait associations (MTAs) reported in published genome-wide association studies (GWAS) were used to validate nine of the 11 identified MQTLs, with MQTL4.1 overlapping with as many as 40 MTAs. Functional annotation of the 11 MQTL regions revealed 1,251 genes including several R genes (such as those encoding for NBS-LRR domain-containing proteins, protein kinases, etc.) and other defense related genes. The MQTLs, QTL hotspots and the potential candidate genes identified during the present study will prove useful in common bean marker-assisted breeding programs and in basic studies involving fine mapping and cloning of genomic regions associated with anthracnose resistance in common beans.
由真菌引起的炭疽病是影响全球普通菜豆生产和产量的毁灭性病害之一。已鉴定出几个抗炭疽病的数量性状位点(QTL)。为了在普通菜豆育种计划中利用这些QTL,已进行了详细的元QTL(MQTL)分析。对于MQTL分析,收集了涉及16个作图群体的18项不同早期研究中报道的92个与炭疽病相关的QTL,并将其投影到共识图谱上。这项元分析导致在6条菜豆染色体上鉴定出11个MQTL(每个MQTL至少涉及两项不同研究中的QTL),以及在7条染色体上鉴定出10个QTL热点,每个热点涉及来自一项单独研究的多个QTL。发现所鉴定MQTL的置信区间(CI)比初始QTL的CI低3.51倍。已发表的全基因组关联研究(GWAS)中报道的标记-性状关联(MTA)用于验证所鉴定的11个MQTL中的9个,其中MQTL4.1与多达40个MTA重叠。对11个MQTL区域的功能注释揭示了1251个基因,包括几个R基因(如编码含NBS-LRR结构域蛋白、蛋白激酶等的基因)和其他与防御相关的基因。本研究中鉴定出的MQTL、QTL热点和潜在候选基因将证明对普通菜豆标记辅助育种计划以及涉及普通菜豆抗炭疽病相关基因组区域精细定位和克隆的基础研究有用。