Document Type : Research Paper


1 Faculty of Biosciences, Shahid Beheshti University, Tehran, Iran.

2 Faculty of Basic Science, Hormozgan University, Bandar Abbas, Iran.


Hot springs have been a subject of intense discussion for biologists in the last decades. Thermophilic cyanobacteria are scientifically valuable for their analogy to the ancient life forms on earth and also as a source of thermostable biocompounds. Exploration of their biodiversity is an important step towards these goals. In a revision of the cyanobacteria in hot springs of Iran, four hot springs in the Hormozgan (Bandar Abbas) and Mazandaran provinces of Iran were sampled from October 2011 to July 2012. In total 43 species belonging to 20 genera, 11 families and 5 orders of the planktonic cyanobacteria were identified. Among these taxa Chroococcus with 7, Oscillatoria and Phormidium with5 species found to be more predominant and noticeable among other genera. All of these taxa are new records for studied hot springs. We developed a combined molecular and morphological approach to identification of cyanobacteria. In this study seventeen populations and 13 morphological characters were analyzed. Molecular study based on 16S rRNA gene sequence does not disrupt morphological information and it confirms the separation of studied taxa according to morphological characters.


Article Title [Persian]

مطالعه تنوع مورفولوژیکی و فیلوژنی سیانوباکتری های 4 چشمه آب گرم در ایران

Authors [Persian]

  • فاطمه حیدری 1
  • حسین ریاحی 1
  • مرتضی یوسف زادی 2
  • زینب شریعتمداری 1
1 فارغ التحصیل کارشناسی ارشد دانشکده علوم زیستی دانشگاه شهید بهشتی.
2 استادیار دانشکده علوم پایه دانشگاه هرمزگان
Abstract [Persian]

چشمه‌های آب گرم در سال‌های اخیر از سوی زیست‌شناسان بسیار مورد توجه واقع شده‌اند. سیانوباکتری‌های ترموفیل بدلیل شباهت با فرم‌های زندگی اجدادی در زمین و همچنین به عنوان منبعی از ترکیبات زیستی پایدار در برابر گرما، از ارزش علمی بالایی برخوردار هستند، و بررسی تنوع زیستی آنها گام مفیدی در جهت رسیدن به اهداف ذکر شده می‌باشد. در این تحقیق سیانوباکتری‌های موجود در 4 چشمه‌ی آب گرم در ایران مورد مطالعه قرار گرفت. در این تحقیق 43 گونه متعلق به 20 جنس و 11 تیره شناسایی شد. علاوه بر مطالعه بر اساس خصوصیات مورفولوژیک، جهت شناسایی دقیق‌تر سیانوباکتری‌های شناسایی شده، مطالعات مولکولی بر اساس توالی ژنومی  16S rRNA انجام شد. نتایج بدست آمده در هر دو روش بکار برده شده هم راستا و تایید کننده بکدیگر بودند.

Keywords [Persian]

  • cyanobacteria
  • hot spring
  • morphological diversity
  • 16S rRNA
  • phylogeny
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