An initial assessment of genetic diversity for Phytophthora capsici in northern and central Mexico

作者：Castro Rocha Arturo; Shrestha Sandesh; Lyon Becky; Lizette Grimaldo Pantoja Graciela; Pedro Flores Marges Juan; Valero Galvan Jose; Aguirre Ramirez Marisela; Osuna Avila Pedro; Gomez Dorantes Nuria; Avila Quezada Graciela; de Jesus Luna Ruiz Jose; Rodriguez Alvarado Gerardo; Patricia Fernandez Pavia Sylvia; Lamour Kurt

来源：Mycological Progress, 2016, 15(2): 15.

DOI：10.1007/s11557-016-1157-0

• Oomycetes
• SNP
• Bayesian clustering
• Outcrossing rate

Phytophthora capsici causes significant damage to vegetable production in Mexico, but very little is known about the population structure or how populations survive and spread. The objective of the present study was to evaluate the genetic diversity of P. capsici isolates recovered from 1998-2014 in central and northern Mexico. Isolates (n=81) were genotyped for 33 polymorphic single nucleotide polymorphism (SNP) loci using a targeted sequencing approach. There were a total of 72 unique genotypes and both the A1 and A2 mating types were common in both regions. Genetic analyses suggest clonal reproduction may play a more prominent role in the north, but the large proportion of unique genotypes and the finding of both mating types throughout both regions suggests outcrossing and sexual recombination likely play an important role in the overall epidemiology. Further studies with finer scale sampling at single locations over multiple years will be valuable.

• 出版日期2016-2