THE STUDY OF HETEROCYSTOUS CYANOBACTERIA FROM PADDY FIELDS IN KALAT NADERI DISTRICT IN NORTH-EAST OF IRAN

Document Type : Research Paper

Authors

Faculty of Biosciences, University of Shahid Beheshti, Evin, Tehtan, Iran.

Abstract

Heterocystous cyanobacteria represent an interesting group of photosynthetic prokaryotes which are capable of N2 fixation and are present abundantly in rice fields. The aim of this study was the identification and purification of cyanobacteria from rice fields in the Kalate Naderi ,which is located in north-east of Khorasan Razavi Province. To approach this aim, four paddy fields were selected to investigate heterocyestous blue-green algae. In total, 30 taxa were identified. These species belong to genera such as Nostoc, Anabaena, Cylindrospermum and Calothrix. Among these genera, Nostoc was found to be dominant genus in all samples. Six species, including Anabaena fuellebornii Schmidle, Anabaena inaequalis Bornet & Flahault, Nostoc pruniforme C. Agardh ex Bornet & Flahault, Nostoc amplissimum Setchell, Nostoc piscinale Kützing ex Bornet & Flahault, and Calothrix fusca (Kützing) Bornet & Flahault were identified as new records for Iran.

Keywords

Article Title [Persian]

مطالعه سیانوباکتری‌های دارای هتروسیست مزارع برنج کلات نادری واقع در شمال شرق ایران

Authors [Persian]

  • الهه اصلانی
  • حسین ریاحی
  • زینب شریعتمداری
  • فاطمه بازی
دانشکده علوم زیستی، دانشگاه شهید بهشتی، تهران
Abstract [Persian]

سیانوباکتری‌های تولیدکننده هتروسیت گروه ویژه‌ای از پروکاریوت‌های فتوسنتزکننده هستند که قادرند نیتروژن اتمسفری را تثبیت کنند و در مزارع برنج به فراوانی یافت می‌شوند. هدف از این مطالعه خالص‌سازی و شناسایی سیانوباکتری‌های مزارع برنج ناحیه کلات نادری از استان خراسان رضوی است. در راستای نیل به این هدف، فلور جلبکی 4 ایستگاه واقع در این ناحیه مورد بررسی قرار گرفت و در مجموع 30 تاکسون شناسایی شد. گونه‌های شناسایی‌شده مربوط به جنس‌هایی از قبیل Nostoc ،Anabaena ،Cylindrospermum و Calothrix بودند. در میان این جنس‌ها، جنسNostoc به عنوان نمونه غالب موجود در تمام ایستگاه‌ها شناسایی شد. همچنین شش گونه ذیل به عنوان گونه‌های جدید برای ایران گزارش می‌گردند:
Anabaena fuellbornii Schmidle, Anabaena inaequalis Borent & Flahault, Nostoc picinale Kützing ex Bornet, Nostoc pruniforme C.Agardh ex Bornet & Flahault, Nostocamplissimum Setchell, Calothrix fusca (Kützing) Bornet & Flahault.

Keywords [Persian]

  • Algal flora
  • Heterocystus cyanobacteria
  • Kalat Naderi
  • Paddy Field
  • Khorassan
  • Iran

References

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The Iranian Journal of Botany
Volume 20, Issue 2 - Serial Number 2
December 2014
Pages 257-264

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History

  • Receive Date: 29 April 2014
  • Revise Date: 30 June 2014
  • Accept Date: 30 November 2014

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