贵州辣椒炭疽病菌的鉴定及遗传多样性分析
Identification and Genetic Diversity Analysis of the Pathogen of Anthracnose of Pepper in Guizhou.
作者信息
Zhang Aimin, Li Lei, Xie Xuewen, Chai Ali, Shi Yanxia, Xing Dan, Yu Zhiguo, Li Baoju
机构信息
Plant Protection College, Shenyang Agricultural University, Shenyang 110866, China.
Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
出版信息
Plants (Basel). 2024 Mar 4;13(5):728. doi: 10.3390/plants13050728.
Anthracnose of pepper is a significant disease caused by spp. In 2017 and 2021, 296 isolates were obtained from 69 disease samples. Through morphological analysis, pathogenicity detection, and polygenic phylogenetic analysis, the above strains were attributed to 10 species: , , , , , , , , , and . had the most strains (150), accounting for 51.02% of the total isolates; came in second (72 isolates), accounting for 24.49%. Regarding regional distribution, Zunyi City has the highest concentration of strains-92 strains total, or 34.18%-across seven species. Notably, this investigation showed that infected pepper fruit for the first time in China. Genetic diversity analysis showed that could be divided into seven haplotypes, and the population in each region had apparent genetic differentiation. However, the genetic distance between each population was not significantly related to geographical distance. Neutral detection and nucleotide mismatch analysis showed that might have undergone population expansion.
辣椒炭疽病是由多种病原菌引起的一种重要病害。2017年至2021年期间，从69个病害样本中分离得到296株菌株。通过形态学分析、致病性检测和多基因系统发育分析，上述菌株被归为10个种：[具体种名1]、[具体种名2]、[具体种名3]、[具体种名4]、[具体种名5]、[具体种名6]、[具体种名7]、[具体种名8]、[具体种名9]和[具体种名10]。[种名1]的菌株数量最多（150株），占分离菌株总数的51.02%；[种名2]次之（72株），占24.49%。在区域分布方面，遵义市的菌株浓度最高——共有92株，分属7个种，占比34.18%。值得注意的是，本次调查表明[某种病原菌]首次在中国感染辣椒果实。遗传多样性分析表明，[某种病原菌]可分为7个单倍型，各区域的种群具有明显的遗传分化。然而，各群体之间的遗传距离与地理距离并无显著关联。中性检测和核苷酸错配分析表明，[某种病原菌]可能经历了种群扩张。
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