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Relationship of Colletotrichum lindemuthianum races and resistance loci in the Phaseolus vulgaris L. genome
Crop Science ( IF 2.3 ) Pub Date : 2021-07-17 , DOI: 10.1002/csc2.20601
Maria Paula Barion A. Nunes 1 , Maria Celeste Gonçalves‐Vidigal 1 , Vanusa S. R. Martins 1 , Larissa F. S. Xavier 1 , Giseli Valentini 1 , Mariana Vaz Bisneta 1 , Pedro Soares Vidigal Filho 1
Affiliation  

Anthracnose caused by Colletotrichum lindemuthianum is one of the most critical diseases in the common bean (Phaseolus vulgaris L.). The characterization and localization of pathogenic fungal races are essential for understanding pathogen population dynamics and developing resistant cultivars. Here, we discussed the relationship between the diversity of C. lindemuthianum and common bean resistance genes against anthracnose disease. Indeed, several studies using a system of 12 differential bean cultivars have been carried out since 1991 to monitor anthracnose, reporting the constant appearance of new races. Colletotrichum lindemuthianum shows high virulence diversity, with 298 races distributed across 29 countries. In Brazil, we identified 89 races, with races 73, 65, and 81 as the most frequent. Moreover, we highlighted the common bean gene clusters, their unique location on chromosomes, and their relationship with races and resistance genes. The genetic mapping studies, molecular markers linked to anthracnose resistance alleles, and the specific races were integrated on the seven-chromosome map using the reference genome of common bean. Recently, the ease of use of genome sequences and the development of molecular technologies have allowed molecular markers for marker-assisted selection applied to anthracnose-resistant cultivars. As a result, it is feasible that Mesoamerican genes Co-5, Co-42, Co-6, Co-16, and Co-17, and the Andean genes Co-12, Co-14, Co-Bf, Co-15, Co-AC, and CoPv01CDRK are well known to confer resistance to most races reported in Brazil and around the world. Thus, pyramiding these genes through molecular markers can help reduce the time and cost of introducing resistance genes in commercial common bean cultivars.

中文翻译:

菜豆基因组中Colletotrichum lindemuthianum小种与抗性基因座的关系

Colletotrichum lindemuthianum引起的炭疽病是普通豆类(Phaseolus vulgaris L.)中最严重的病害之一。致病真菌小种的表征和定位对于了解病原体种群动态和开发抗性栽培品种至关重要。在这里,我们讨论了C. lindemuthianum的多样性与常见的豆类炭疽病抗性基因之间的关系。事实上,自 1991 年以来,已经使用 12 个不同的豆类品种系统进行了几项研究来监测炭疽病,报告了新品种的不断出现。炭疽菌显示出高毒力多样性,298 个种族分布在 29 个国家/地区。在巴西,我们确定了 89 场比赛,其中 73、65 和 81 场比赛最为频繁。此外,我们强调了常见的 bean 基因簇、它们在染色体上的独特位置,以及它们与种族和抗性基因的关系。使用普通豆的参考基因组将遗传作图研究、与抗炭疽病等位基因相关的分子标记和特定种族整合到七染色体图谱上。最近,基因组序列的易用性和分子技术的发展使得分子标记可以应用于抗炭疽病品种的标记辅助选择。因此,中美洲基因Co-5Co-4 2众所周知Co-6Co-16Co-17以及安第斯基因Co-1 2Co-1 4Co - BfCo-15Co-ACCoPv01 CDRK可赋予大多数抗性比赛在巴西和世界各地报道。因此,通过分子标记对这些基因进行聚合有助于减少在商业普通豆类品种中引入抗性基因的时间和成本。
更新日期:2021-07-17
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