Striatiguttulaceae, a new pleosporalean family to accommodate Longicorpus and Striatiguttula gen. nov. from palms
文献类型： 外文期刊
作者： Zhang, Sheng-Nan 1 ; Hyde, Kevin D. 4 ; Jones, E. B. Gareth 5 ; Jeewon, Rajesh 6 ; Cheewangkoon, Ratchadawan 3 ; Li 1 ;
作者机构： 1.Univ Elect Sci & Technol China, Ctr Bioinformat, Sch Sci & Technol, Chengdu 611731, Sichuan, Peoples R China
2.Guizhou Acad Agr Sci, Guizhou Key Lab Agr Biotechnol, Guiyang 550006, Guizhou, Peoples R China
3.Chiang Mai Univ, Dept Entomol & Plant Pathol, Fac Agr, Chiang Mai 50200, Thailand
4.Mae Fah Luang Univ, Ctr Excellence Fungal Res, Chiang Rai 57100, Thailand
5.Nantgaredig 33B St Edwards Rd, Southsea, Hants, England
6.Univ Mauritius, Dept Hlth Sci, Fac Sci, Reduit 80837, Mauritius
关键词： 6 new taxa; divergence times; Dothideomycetes; epitype; sexual morphs
期刊名称：MYCOKEYS （ 影响因子：2.984； 五年影响因子：3.004 ）
ISSN： 1314-4057
年卷期： 2019 年 49 期
页码：
收录情况： SCI
摘要： Palms represent the most morphological diverse monocotyledonous plants and support a vast array of fungi. Recent examinations of palmicolous fungi in Thailand led to the discovery of a group of morphologically similar and interesting taxa. A polyphasic approach based on morphology, multi-gene phylogenetic analyses and divergence time estimates supports the establishment of a novel pleosporalean family Striatiguttulaceae, which diversified approximately 39 (20-63) MYA (crown age) and 60 (35-91) MYA (stem age). Striatiguttulaceae is characterized by stromata or ascomata with a short to long neck, trabeculate pseudoparaphyses and fusiform to ellipsoidal, 1-3-septate ascospores, with longitudinal striations and paler end cells, surrounded by a mucilaginous sheath. Multi-gene phylogenetic analysis showed that taxa of Striatiguttulaceae form a well-supported and distinct monophyletic Glade in Pleosporales, and related to Ligninsphaeriaceae and Pseudoastrosphaeriellaceae. However, these families can be morphologically demarcated by the slit-like ascomata and extremely large ascospores in Ligninsphaeriaceae and the rather narrow fusiform ascospores in Pseudoastrosphaeriellaceae. Eight strains of Striatiguttulaceae formed two monophyletic sub-Glades, which can be recognized as Longicorpus gen. nov. and Striatiguttula gen. nov. Morphologically, the genus Longicorpus can be differentiated from Striatiguttula by its elongated immersed ascomata and fusiform ascospores with relatively larger middle cells and paler end cells. Two new species Striatiguttula nypae and S. phoenicis, and one new combination, Longicorpus striataspora are introduced with morphological details, and phylogenetic relationships are discussed based on DNA sequence data.
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