چكيده فارسي :
طي سال هاي 95-1394، حضور ميكروميست هاي آبزي در اكوسيستم هاي آبي ايران مورد بررسي قرار گرفت. نمونه ها از حاشيه برخي رودخانه ها، درياچه ها و تالاب هاي مناطق مختلف اقليمي جمع آوري شدند. به منظور جداسازي قارچ ها، قرص هايي از محيط كشت آب-آگار (WA) به تشتك هاي پتري حاوي نمونه هاي آب منتقل شدند و به مدت 21 روز در شرايط نور متناوب (12 ساعت نور/12 ساعت تاريكي) و دماي 25 الي 27 درجه سلسيوس قرار داده شدند. سپس از ميسليوم هاي رشد كرده روي قرص هاي مذكور، پرگنه خالص تهيه شدند. از بين گونه هاي به دست آمده، يك جدايه از قارچAquanectria penicillioides (Ingold) L. Lombard & Crous مورد شناسايي قرار گرفت. براساس منابع موجود، اين نخستين گزارش از جنس Aquanectria L. Lombard & Crous در ايران مي باشد. اين گونه به عنوان آرايه جديدي براي مايكوبيوتاي ايران گزارش و توصيف مي شود.
چكيده لاتين :
During 2015–16, the presence of micromycetes species in aquatic ecosystems was studied in Iran. Samples were
collected from rivers, lakes and wetlands. For isolation, agar disks were transferred to plates containing water samples.
The plates were incubated at 25–27° C for 21 days in 12 h light/12 h dark condition. Then from the mycelium grown on
the agar disks, pure cultures were obtained. Finally, an isolate was identified as Aquanectria penicillioides (Ingold) L.
Lombard & Crous, based on morphological and molecular data (sequences of ITS rDNA). Based on available
literatures, this species is reported as new taxon for mycobiota of Iran and is described below:
Colony on PDA reached 50 mm in diam., after 14 days at 25° C in continuous dark condition. The hyphae are
colorless (Fig. 1a). Chlamydospores were formed in moniliform chain, brown in color and 15–28(20) × 10–16(14) µm
in diameter (Fig. 1b). The colony on PDA forms few or no conidiophores but, if a small mycelial disc is cut off and
submerged in water, numerous submerged conidiophores will be produced within two days. The submerged
conidiophores are hyaline and penicillium-like (Fig. 1c, d); apical phialides are 15–21(18) µm long, 2–2.5 µm wide.
