Melomastia (Dothideomycetes, Ascomycota) species associated with Chinese Aquilaria spp

Tian-Ye Du; Samantha C Karunarathna; Saowaluck Tibpromma; Kevin D Hyde; Somrudee Nilthong; Ausana Mapook; Xiang-Fu Liu; Dong-Qin Dai; Chen Niu; Abdallah M Elgorban; Ekachai Chukeatirote; Hao-Han Wang

doi:10.3897/mycokeys.111.137898

Melomastia (Dothideomycetes, Ascomycota) species associated with Chinese Aquilaria spp

MycoKeys. 2024 Dec 4:111:65-86. doi: 10.3897/mycokeys.111.137898. eCollection 2024.

Authors

Affiliations

¹ Research Center of Natural History and Culture, Center for Yunnan Plateau Biological Resources Protection and Utilization, Key Laboratory of Yunnan Provincial Department of Education of the Deep-Time Evolution on Biodiversity from the Origin of the Pearl River, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing 655011, China.
² Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.
³ School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand.
⁴ Spice and Beverage Research Institute, Chinese Academy of Tropical Agriculture Sciences, Wanning 571533, China.

Abstract

This study is based on three terrestrial saprobic fungi associated with Aquilaria in Guangdong and Yunnan provinces in China. All isolated species matched with generic concepts of Melomastia. Detailed morphological characteristics and combined multigene phylogeny of LSU, SSU, and TEF revealed that the new isolates represent two new species (Melomastiaguangdongensis and M.yunnanensis), and one new host and geographical record (M.sinensis). Melomastiaguangdongensis is distinct from the phylogenetically closest species in having semi-immersed to immersed, globose to subglobose ascomata, and two strata of the peridium. Melomastiayunnanensis differs from the phylogenetically closest species in having immersed ascomata, conical ostiolar canals, and branched pseudoparaphyses. The discovery of these two new species and one new record collected expands the number of saprobic species associated with Aquilaria from 28 to 31. Descriptions, photo plates, and phylogenetic analyses of taxa are provided.

Keywords: 2 new species; Dyfrolomycetales; Pleurotremataceae; Thymelaeaceae; new records; saprobes.

Tian-Ye Du, Samantha C. Karunarathna, Saowaluck Tibpromma, Kevin D. Hyde, Somrudee Nilthong, Ausana Mapook, Xiang-Fu Liu, Dong-Qin Dai, Chen Niu, Abdallah M. Elgorban, Ekachai Chukeatirote, Hao-Han Wang.

Grants and funding

The authors are grateful to the Special Basic Cooperative Research Innovation Programs of Qujing Science and Technology Bureau & Qujing Normal University (Grant No. KJLH2022YB03), the Special Basic Cooperative Research Programs of Yunnan Provincial Undergraduate Universities (Grant No. 202101BA070001-209, 202101BA070001-279), Mee-mann Chang Academician Workstation in Yunnan Province (Grant No. 202205AF150002), and Yunnan Province Young and Middle-aged Academic and Technical Leaders Reserve Talents Program (Grant No.202305AC350252), and General Programs of the Provincial Department of Science and Technology (Grant No. 202101BA070001-076) for support. The authors also extend their appreciation to the Researchers Supporting Project number (RSPD2024R558), King Saud University, Riyadh, Saudi Arabia.