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Issue: Vol. 734 No. 2: 19 Dec. 2025
Type: Article
Published: 2025-12-19
DOI: 10.11646/phytotaxa.734.2.6
Page range: 221-234
Abstract views: 36
PDF downloaded: 1

Integrative morphological and phylogenetic analyses reveal Russula subrubricolor (Russulaceae, Russulales), a new ectomycorrhizal fungus from Pakistan

Department of Botany, Division of Science & Technology, University of Education, Lahore, 54500, Pakistan
Department of Botany, Division of Science & Technology, University of Education, Lahore, 54500, Pakistan
State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops, Key Laboratory of Biopesticides and Chemical Biology, MOE, College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China
State Key Laboratory of Wheat Improvement, Shandong Provincial Key Laboratory of Agricultural Microbiology, College of Plant Protection, Shandong Agricultural University, Tai’an 271018, China
State Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China; Engineering Research Center of Southwest Bio-Pharmaceutical Resources, Ministry of Education, Guizhou University, Guiyang 550025, China; School of Pharmacy, Guizhou University, Guiyang 550025, China
Department of Genetics, Hazara University, Mansehra, Khyber Pakthunkhwa, 21120, Pakistan
Asia Basidiomycota new species phylogeny taxonomy Fungi

Abstract

Ectomycorrhizal fungi are key components of forest ecosystems, and thus, documenting their taxonomic diversity is essential for understanding and maintaining ecosystem stability. The current study deals with the discovery of an ectomycorrhizal species, Russula subrubricolor sp. nov., from Pakistan, based on light microscopy, scanning electron microscopy, and nrITS-based phylogenetic analysis. Phylogenetically, Russula subrubricolor formed a distinct and strongly supported clade (BS=99/PP=1.00) sister to Russula rubricolor, differing by 16 nucleotide substitutions and 15 indels in the nrITS region. The new species is characterized by a brighter red pileus with decurved margins, bright yellow lamellae, a stipe developing yellow coloration at the broader base, globose to subglobose and non-reticulated basidiospores (mean 6.0 × 5.6 µm) consisting of isolated to fused warts, fusiform to narrowly cylindrical hymenial cystidia, and subfusiform pileocystidia. Morphological descriptions, field photos, micrographs, and nrITS-based phylogenetic analyses are presented in this article for the newly described species. This study contributes to the expanding knowledge of Russula diversity in the Himalayan region and highlights the importance of continued mycological exploration in understudied ectomycorrhizal habitats.

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How to Cite

Sana, Kiran, M., Basit, A., Humza, M., Khan, M.B. & Ali, W. (2025) Integrative morphological and phylogenetic analyses reveal Russula subrubricolor (Russulaceae, Russulales), a new ectomycorrhizal fungus from Pakistan. Phytotaxa 734 (2): 221–234. https://doi.org/10.11646/phytotaxa.734.2.6