Talaromyces doitungensis sp. nov. and new records from Doi Tung National Forest in Thailand

作者：S. Thakshila, C. S. Bhunjun, Natsaran Saichana, C. Phukhamsakda, I. Manawasinghe, Ashani D. Madagammana, F. Alotibi, K. Hyde, S. Hoog · 发表于：Phytotaxa · 年份：2026 · DOI：10.11646/phytotaxa.747.1.2 · 被引用次数：1

Talaromyces (Eurotiales, Trichocomaceae) is a monophyletic genus with species that impact the environment, human health, and various industries. Talaromyces consists of eight sections, and their ecology, diversity, and number of recognised species are rapidly expanding due to advances in morpho-molecular studies. In this study, we analyse the fungal diversity of soil samples collected from the Doi Tung Forest areas, which are dominated by Pinus kesiya in Chiang Rai, Thailand. Morphological and multi-gene phylogenetic analyses of internal transcribed spacer (ITS1-5.8S-ITS2), ß-tubulin (BenA), calmodulin (CaM), and the second largest subunit of the DNA-directed RNA polymerase II (rpb2) sequences were used to confirm the taxonomic placements of the new isolates. Herein, we describe Talaromyces doitungensis as a new species, report T. rubidus for the first time in Thailand (marking its second global record). Further, multi-gene phylogenetic analyses confirmed the distinct placement of these species and determined their relationships, supporting their recognition based on the phylogenetic species concept. In addition, preliminary antibacterial screening revealed that Talaromyces rubidus exhibited activity against Bacillus subtilis. Our findings contribute to the understanding of Talaromyces diversity and ecology by documenting a new species and new geographic records from pine-dominated forest soils in northern Thailand, and further studies are necessary to explore the bioactive c...