New records and hosts for Exserohilum and Pyrenophora species in Iran

Document Type : Research Paper

Authors

1 PhD Student (graduated), Plant Protection Department, Faculty of Agriculture, University of Tabriz, Tabriz, Iran

2 Prof., Plant Protection Department, Faculty of Agriculture, University of Tabriz, Tabriz, Iran

3 Assistant Prof., Higher Education Center Shahid Bakeri Miyandoab, Urmia University, Urmia, Iran

Abstract

In a taxonomic study of Exserohilum and Pyrenophora species in Iran, infected plant materials were obtained from different provinces (West and East Azerbaijan, Guilan, Mazandaran, Isfahan and Khuzestan), during the years 2013–16.
A total number of fourty eight isolates including 26 Exserohilum and 22 Pyrenophora isolates were obtained from various plants. The internal transcribed spacer (ITS) region and GPDH (Glyceraldehyde-3-phosphate dehydrogenase) gene were amplified and sequenced for representative isolates. Based on a combination of morphological characteristics and sequence data, six species of Exserohilum viz., E. monoceras (three isolates), E. oryzicola (five isolates), E. rostratum (12 isolates), E. turcicum (six isolates),and Pyrenophora viz.,
P. dictyoides (one isolate) P. graminea (19 isolates), and P. lolii (two isolates) were identified. Among the species, E. oryzicola is new species for the mycobiota of Iran. Full description and illustration for the new species are provided herewith. New hosts are also reported for E. rostratum,and P. lolii.
 
 

Keywords


Article Title [Persian]

گزارش‌ها و میزبان‌های جدید از گونه‌های Exserohilum و Pyrenophora در ایران

Authors [Persian]

  • زینب حیدریان 1
  • مهدی ارزنلو 2
  • عبدالله احمدپور 3
1 فارغ‌التحصیل دکتری گروه گیاه‌پزشکی، دانشکده کشاورزی، دانشگاه تبریز، تبریز، ایران
2 استاد گروه گیاه‌پزشکی، دانشکده کشاورزی، دانشگاه تبریز، تبریز، ایران
3 استادیار مرکز آموزش عالی شهید باکری، میاندوآب، دانشگاه ارومیه، ارومیه، ایران
Abstract [Persian]

در راستای تاکسونومی گونه‌های جنس‌های Exserohilum و Pyrenophora، نمونه‌های برگی آلوده گیاهی طی سال‌های 94-1392 از استان‌های مختلف کشور (آذربایجان غربی و شرقی، مازندران، گیلان، اصفهان و خوزستان) جمع‌آوری گردید. تعداد 48 جدایه از جنس‌های Exserohilum (26 جدایه) و Pyrenophora (22 جدایه) از گونه‌های مختلف گیاهی جداسازی گردید. جدایه‌ها براساس ویژگی‌های ریخت‌شناختی و توالی‌یابی‌ ناحیه rDNA ITS1-5.8S-ITS2 و ژن GPDH (Glyceraldehyde-3-phosphatedehydrogenase) شناسایی شدند. براساس داده‌های ریخت‌شناختی و مولکولی، چهار گونه از جنس Exserohilum شامل E. monoceras (سه جدایه)، E. oryzicola (پنج جدایه)، E. rostratum (12 جدایه)، E. turcicum (شش جدایه) و سه گونه از جنس Pyrenophora شامل P. graminea (19 جدایه)، P.dictyoides (یک جدایه) و P. lolii (دو جدایه) شناسایی شدند. گزارش گونه E. oryzicola برای مایکوبویتای ایران جدید می‌باشد. شرح کامل به همراه تصاویر برای گونه جدید و همچنین میزبان‌های جدید برای دو گونه E. rostratumوP. loliiمعرفی می‌گردد.
 
 

Keywords [Persian]

  • تاکسونومی
  • ریخت‌شناسی
  • فیلوژنی
  • ITS
  • GPDH
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