Genetic Diversity and Mating Type Distribution of Ascochyta rabiei Populations Affecting Chickpea


Attar B., Aahmed S., KAYIM M., Hamwieh A., Choueiri E., Ghannam H., ...Daha Fazla

Arab Journal of Plant Protection, cilt.43, sa.2, ss.185-193, 2025 (Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 43 Sayı: 2
  • Basım Tarihi: 2025
  • Doi Numarası: 10.22268/ajpp-001313
  • Dergi Adı: Arab Journal of Plant Protection
  • Derginin Tarandığı İndeksler: Scopus
  • Sayfa Sayıları: ss.185-193
  • Anahtar Kelimeler: Ascochyta rabiei, diversity, mating type, SSR markers
  • Çukurova Üniversitesi Adresli: Evet

Özet

Chickpea Ascochyta blight, caused by Ascochyta rabiei, is the most important disease of chickpea in many countries. Understanding the genetic diversity of the pathogen is very important to identify resistance sources to virulent populations in national and international chickpea breeding programs. Moreover, knowledge on the existence of mating types can help to fine tune Ascochyta blight management practices. Eight simple sequence repeats (SSR) markers were used to estimate the genetic diversity of 96 isolates collected from four countries (Uzbekistan, Syria, Lebanon, and Türkiye). A total of 29 bands were recorded, of which 26 were polymorphic. The study showed that the isolates were genetically diverse and isolates from Uzbekistan showed the highest diversity. Following phylogenetic analysis, the isolates were clustered into four groups and isolates from Uzbekistan were distributed in all groups. The two mating types were found in the four countries and no significant deviation from 1:1 ratio for Türkiye and Uzbekistan isolates.