Kobmoo Noppol, Mongkolsamrit Suchada, Wutikhun Taksadon, Tasanathai Kanoksri, Khonsanit Artit, Thanakitpipattana Donnaya, Luangsa-Ard Janet Jennifer
Microbe Interaction Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand.
Microbe Interaction Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand.
Fungal Biol. 2015 Jan;119(1):44-52. doi: 10.1016/j.funbio.2014.10.008. Epub 2014 Nov 6.
Ophiocordyceps unilateralis is an ubiquitous pathogen of ants with hidden phylogenetic diversity associated with host specificity. In this study, we describe two new species to this species complex: Ophiocordyceps septa and Ophiocordyceps rami. Both were found on unidentified ants of the genus Camponotus (C. sp.1 and C. sp2 respectively). Ophiocordyceps septa is very similar to Ophiocordyceps polyrhachis-furcata, Ophiocordyceps camponoti-leonardi, and Ophiocordyceps camponoti-saundersi (found respectively on the ants Polyrhachis furcata, Camponotus leonardi, and Camponotus saundersi) but differs in the size, the shape and the septation of the ascospores, while O. rami is clearly identifiable with macro-morphological features including multiple stromata similar to Ophiocordyceps halabalaensis on Camponotus gigas. A thorough morphological examination was also provided for O. polyrhachis-furcata, O. camponoti-leonardi, and O. camponoti saundersi, showing that the first was apparently distinguishable from the others by the absence of septation of the ascospores. A combined molecular phylogeny also supports O. septa and O. rami as distinct new species.
冬虫夏草菌是蚂蚁中普遍存在的病原体，具有与宿主特异性相关的隐藏系统发育多样性。在本研究中，我们描述了该物种复合体中的两个新物种：隔孢冬虫夏草菌和分枝冬虫夏草菌。它们分别在未鉴定的弓背蚁属蚂蚁（分别为弓背蚁1号和弓背蚁2号）上被发现。隔孢冬虫夏草菌与多刺蚁冬虫夏草菌、黑褐蚁冬虫夏草菌和桑氏弓背蚁冬虫夏草菌（分别在多刺蚁、黑褐蚁和桑氏弓背蚁上发现）非常相似，但在子囊孢子的大小、形状和隔膜方面有所不同，而分枝冬虫夏草菌通过宏观形态特征可清晰识别，包括多个子座，类似于在巨首蚁上发现的哈氏冬虫夏草菌。我们还对多刺蚁冬虫夏草菌、黑褐蚁冬虫夏草菌和桑氏弓背蚁冬虫夏草菌进行了全面的形态学检查，结果表明，多刺蚁冬虫夏草菌显然因子囊孢子无隔膜而与其他物种有明显区别。一个联合分子系统发育分析也支持隔孢冬虫夏草菌和分枝冬虫夏草菌为不同的新物种。
