Biodiversity of Penicillium and Talaromyces species from sugarcane rhizosphere in Khuzestan province (Iran)

Document Type : Systematics and Biodiversity of Fungi

Authors

1 PhD Student, Department of Plant Protection, Science and Research Branch, Islamic Azad University, Tehran, Iran

2 Research Assistant Prof., Department of Botany, Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran

3 Research Prof., Department of Botany, Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran

4 Prof., Department of Plant Protection, Science and Research Branch, Islamic Azad University, Tehran, Iran

Abstract

Members of Penicillium and Talaromyces that are among the most frequent fungi in sugarcane (Saccharum officinarum L.) rhizosphere, gain attention from various research fields such as agriculture, medicine, biotechnology and food industry. To evaluate the species diversity of these fungi in sugarcane rhizosphere in Khuzestan province of Iran, 64 samples were collected from eight sugarcane agro-industrial plantations, from which 187 isolates of Penicillium and eight isolates of Talaromyces were obtained. Penicillium isolates were recovered largely from the sugarcane cultivation areas Karoon (39 isolates), Amir Kabir (33 isolates) and Hafttappeh (30 isolates), respectively. To select representative isolates for morphological studies, the amplified parts of the β-tubulin gene of all strains were subjected to PCR-RFLPs. Based on morphological and molecular data (sequences of β-tubulin gene), Talaromyces pinophilus and 11 species of Penicillium including P. chrysogenum, P. citrinum, P. crocicola, P. crustosum, P. oxalicum, P. palitans, P. parvulum,
P. polonicum, P. restrictum, P. rubens, and P. simile were identified. Among these, P. parvulum, and P. simile are new to the Iranian funga. The results indicate that, Penicillium citrinum, isolated from all examined sugarcane cultivation areas, was the most frequent species (64.61%). Species diversity of Penicillium was highest in Salman Farsi sugarcane agro-industry plantation while members of Talaromyces were less frequent and diverse as they were only recovered from Amir Kabir, Debel Khazaei, Salman Farsi and Karoon sites.
 
 

Keywords


Article Title [Persian]

تنوع زیستی گونه‌های Penicillium وTalaromyces در ریزوسفر نیشکر در استان خوزستان

Authors [Persian]

  • لاله انصاری 1
  • بیتا عسگری 2
  • رسول زارع 3
  • حمیدرضا زمانی‌زاده 4
1 دانشجوی دکتری گروه گیاه‌پزشکی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران
2 استادیار پژوهش بخش تحقیقات رستنی‌ها، مؤسسه تحقیقات گیاه‌پزشکی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران
3 استاد پژوهش بخش تحقیقات رستنی‌ها، مؤسسه تحقیقات گیاه‌پزشکی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران
4 استاد گروه گیاه‌پزشکی، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی، تهران، ایران
Abstract [Persian]

به منظور بررسی تنوع زیستی جنس‌های Penicillium و Talaromyces در ریزوسفر نیشکر در استان خوزستان، تعداد 64 نمونه خاک جمع‌آوری شده از هشت کشت و صنعت نیشکر مورد بررسی قرار گرفت که از این تعداد، 187 جدایه از جنس Penicillium و هشت جدایه از جنس Talaromyces به دست آمد. بیش‌ترین تعداد جدایه Penicillium به‌ دست آمده در این تحقیق، به ترتیب مربوط به کشت و صنعت‌های‌ نیشکر کارون (39 جدایه)، امیرکبیر (33 جدایه) و هفت تپه (30 جدایه) بود. به منظور انتخاب نماینده‌هایی از جدایه‌ها جهت انجام مطالعات ریخت‌شناختی، روش PCR-RFLPs براساس فرآورده تکثیر یافته ژن β-tubulin  کلیه جدایه‌های به دست آمده مورد استفاده قرار گرفت. براساس مطالعات ریخت‌شناختی و مولکولی مبتنی بر ژن β-tubulin، گونه T. pinophilus و 11 گونه Penicillium شامل P. chrysogenum ،P. citrinum ،P. crocicola ،P. crustosum ،P. oxalicum ، P. palitans، P. parvulum، P. polonicum، P. restrictum ،P. rubens و P. simile شناسایی شدند که در این میان، گونه‌های P. parvulum و P. simile برای نخستین بار از ایران گزارش می‌شوند. گونه P. citri فراوان‌‌ترین گونه (61/64 %) شناسایی شده در این تحقیق بود که از تمامی کشت و صنعت‌های نیشکر جداسازی شد. بیشترین تنوع گونه‌ای Penicillium مربوط به کشت و صنعت‌ سلمان فارسی بود. اعضای جنس Talaromyces هم با فراوانی و تنوع بسیار کم و تنها از کشت و صنعت‌های امیر کبیر، دعبل خزاعی، سلمان فارسی و کارون شناسایی شدند.

Keywords [Persian]

  • تاکسونومی
  • ژن‌های تک‌نسخه‌ای
  • میکروبیولوژی خاک
  • Aspergillaceae
  • Saccharum officinarum
  • Trichocomaceae
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