Assessing the genetic diversity of grape ripe rot pathogen Colletotrichum using SRAP markers

作者：Huang, Y. Q.; Zang, C. Q.; Li, L. X.; Xie, J. H.; Liang, C. H.^*; Bai, Y. J.

来源：Mycosphere, 2016, 7(8): 1103-1110.

DOI：10.5943/mycosphere/si/2c/3

• cluster analysis
• Colletotrichum gloeosporioides
• polymorphic richness
• similarity coefficient

Grape ripe rot caused by species of Colletotrichum is one of the most serious grape diseases worldwide. Information on the genetic variation and population structure of grape ripe rot pathogens would help to develop the theoretical framework of disease occurrence and prevention, epidemic dynamics, and control technologies. In this study, twenty five Colletotrichum gloeosporioides strains isolated from grape diseased samples that were collected from 17 different locations in China were analyzed using six sequence-related amplified polymorphism (SRAP) primer pairs. In total, 164 discernible bands were obtained. Of which 156 showed high polymorphism at a rate of 95.12%. Cluster analysis revealed that the 25 C. gloeosporioides strains had a close genetic relationship and rich genetic diversity with similarity coefficients that ranged from 0.61 to 0.95. The data also demonstrated that no correlation was identified between the isolates or SRAP groups and their geographical distribution.

• 出版日期2016
• 单位辽宁省农业科学院; 沈阳农业大学