مطالعه سیانوپروکاریوت های خاکزی با ساختار آپوهتروسیتیک از خانواده Nostocaceae در ایران

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده علوم زیستی دانشگاه شهید بهشتی

2 دانشکده زیست‌شناسی دانشگاه شهید بهشتی

چکیده

جهت بررسی نمونه ­های خاکزی خانواده Nostocaceae Kützing، تاکسون­های موجود در خاک 20 ایستگاه از 7 استان دارای کشت برنج کشور مورد مطالعه قرار گرفت. طی این تحقیق در مجموع تاکسون‌هایی متعلق به 6 جنس از این خانواده شناسایی شد که از میان تاکسون­های شناسایی شده، 18 گونه و 1 واریته از 4 جنس Nostoc Vaucher ex Bornet & Flahault، Trichormus (Ralfs ex Bornet & Flahault) Komárek & Anagnostidis ، Nodularia Mertens ex Bornet & Flahault و Aulosira Kirchner ex Bornet & Flahault دارای ساختار ترایکمی آپوهتروسیتیک و 20 تاکسون از 2 جنس Anabaena Bory ex Bornet & Flahault و Cylindrospermum Kützing ex Bornet & Flahault دارای ساختار پاراهتروسیتیک می­باشند. از میان گونه ­های شناسایی شده از این خانواده، چهار گونه زیر برای نخستین بار از ایران گزارش می‌شوند و کلید شناسایی، محدوده پراکنش و تصاویر کامرا لوسیدای گونه­ های شناسایی شده، به همراه شرح گونه ­های جدید با تاکید بر تاکسون­های دارای ساختار آپوهتروسیتیک ارائه می­گردد.
Nostoc linckia var. arvense C. B. Rao, Nostoc alatosporum Sant Anna & al., Nostoc spongiaeforme Agardh ex Born. & Flah. and Nostoc verrucosum Vaucher ex Born. & Flah.

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