New species of Tropicoporus (Basidiomycota, Hymenochaetales, Hymenochaetaceae) from India, with a key to Afro-Asian Tropicoporus species

Sugantha Gunaseelan; Kezhocuyi Kezo; Samantha C Karunarathna; Erfu Yang; Changlin Zhao; Abdallah M Elgorban; Saowaluck Tibpromma; Malarvizhi Kaliyaperumal

doi:10.3897/mycokeys.102.117067

New species of Tropicoporus (Basidiomycota, Hymenochaetales, Hymenochaetaceae) from India, with a key to Afro-Asian Tropicoporus species

MycoKeys. 2024 Feb 5:102:29-54. doi: 10.3897/mycokeys.102.117067. eCollection 2024.

Authors

Sugantha Gunaseelan¹, Kezhocuyi Kezo¹, Samantha C Karunarathna^{2

3}, Erfu Yang^{2

4}, Changlin Zhao⁵, Abdallah M Elgorban⁶, Saowaluck Tibpromma², Malarvizhi Kaliyaperumal¹

Affiliations

¹ Centre for Advanced Studies in Botany, University of Madras, Guindy Campus, Chennai 600025, Tamil Nadu, India University of Madras Chennai India.
² Center for Yunnan Plateau Biological Resources Protection and Utilization, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan 655011, China Qujing Normal University Yunnan China.
³ National Institute of Fundamental Studies (NIFS), Kandy, Sri Lanka National Institute of Fundamental Studies (NIFS) Kandy Sri Lanka.
⁴ Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand Chiang Mai University Chiang Mai Thailand.
⁵ College of Biodiversity Conservation, Southwest Forestry University, Kunming 650224, China Southwest Forestry University Kunming China.
⁶ Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia King Saud University Riyadh Saudi Arabia.

Abstract

The Inonotuslinteus complex, predominantly reported from East Asia, Mesoamerica and Caribbean countries, was circumscribed into Tropicoporus as one of the new genera, based on morphological and phylogenetic data. The present paper describes four new species of Tropicoporus from India. Morphological characteristics and phylogenetic analyses, based on ITS and nLSU data, delimited the new species, which are named T.cleistanthicola, T.indicus, T.pseudoindicus and T.tamilnaduensis. The pairwise homoplasy index (PHI) test was done to confirm the distinctive nature of the new species. The traits of Indian species remain distinct from one another, except for the pileate basidiome with the mono-dimitic hyphal system, cystidioles and broadly ellipsoid basidiospores. Descriptions, illustrations, PHI test results and a phylogenetic tree to show the position of the new species are provided. In addition, an identification key to Tropicoporus in Asia and an African species is given.

Keywords: DNA; Inonotuslinteus complex; mushroom; new species; taxonomy; wood decaying fungi.

Sugantha Gunaseelan, Kezhocuyi Kezo, Samantha C. Karunarathna, Erfu Yang, Changlin Zhao, Abdallah M. Elgorban, Saowaluck Tibpromma, Malarvizhi Kaliyaperumal.

Grants and funding

Malarvizhi Kaliyaperumal and Sugantha Gunaseelan thank EMR-SERB, DST (EMR/2016/003078), Government of India for the financial assistance. Samantha Chandranath Karunarathna thank the National Natural Science Foundation of China (Numbers NSFC 32260004) and High-Level Talent Recruitment Plan of Yunnan Provinces (“High-End Foreign Experts” program) for their support. The authors extend their appreciation to the Researchers Supporting Project numbers (RSP2023R120 and RSP2023R197), King Saud University, Riyadh, Saudi Arabia.