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Phylogenetic Analysis of Phaeosphaeria Species Using Mating Type Genes and Distribution of Mating Types in Iran

  • Ghaderi, Fariba (Department of Plant Protection, College of Agriculture, Yasouj University) ;
  • Habibi, Azadeh (Department of Biodiversity, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology) ;
  • Sharifnabi, Bahram (Department of Plant Protection, College of Agriculture, Isfahan University of Technology)
  • 투고 : 2021.10.18
  • 심사 : 2022.01.20
  • 발행 : 2022.04.01

초록

Phaeosphaeria species are pathogenic on wheat, barley and a wide range of wild grasses. To analyze mating type loci of the Phaeosphaeria species and investigate mating type distribution in Iran, we sequenced mating type loci of 273 Phaeosphaeria isolates including 67 isolates obtained from symptomatic leaves and ears of wheat, barley, and wild grasses from two wheat growing region in Iran as well as 206 isolates from our collection from other regions in Iran which were isolated in our previous studies. Mating type genes phylogeny was successfully used to determine the species identity and relationships among isolates within the Phaeosphaeria spp. complex. In this study, we reported seven new host records for Phaeosphaeria species and the Phaeosphaeria avenaria f. sp. tritici 3 group was first reported from Iran in this study. Mating type distribution among Phaeosphaeria species was determined. Both mating types were present in all sampling regions from Iran. We observed skewed distribution of mating types in one region (Kohgiluyeh va Boyer-Ahmad) and equal distribution in the other region (Bushehr). However, when considering our entire dataset of 273 Iranian Phaeosphaeria isolates, the ratio of mating types was not deviated significantly from 1:1 suggesting possibilities for isolates of opposite mating type to interact and reproduce sexually, although the sexual cycle may infrequently occur in some regions especially when the climatic conditions are unfavorable for teleomorph development.

키워드

과제정보

The authors would like to acknowledge the financial support of Yasouj University, Iran, under grant number of d99/89/627.

참고문헌

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