570 Biowissenschaften; Biologie
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During exploratory surveys of the fungal diversity in Margalla Hills National Park, Islamabad, we collected a new species of the genus Hymenopellis R.H.Petersen. This is the second report of any species of this genus from Pakistan. Hymenopellis areolata F.Razzaq & Khalid sp. nov. is characterized by an areolate pileus, small basidiospores, and transitional pileipellis (hymeniderm and epithelium) with small pileocystidia. Molecular phylogenetic analyses of the nucleotide sequences of nrITS and nrLSU regions, and morphological data support the description of this new species. A comparison with other closely related species confirmed that the newly described species is distinct from others.
Panaeolus punjabensis M. Asif, Q. Firdous, A. Izhar, Niazi & Khalid sp. nov. was collected from three different localities (Bahawalnagar, Kasur, and Lahore) in Punjab, Pakistan. Morphological observations and phylogenetic analyses based on nuclear encoded internal transcribed spacers (ITS1-5.8S-ITS2 = ITS) and D1/D2 domain of large subunit (28S) rDNA confirmed the taxonomic distinctness of this species. The new species is potentially hallucinogenic and characterized by a parabolic pileus with a light brown center, broadly fusiform basidiospores, presence of cheilocystidia, pileocystidia, and caulocystidia, and absence of pleurocystidia and clamp connections. The DNA sequences of the species clustered together in a well-supported distinct clade. We present a detailed description, photographs, and line drawings, and elucidate and discuss the phylogenetic position of the new species. Morphological comparisons with phylogenetically and morphologically allied species are discussed.
During mycological explorations, a new smooth spored species, Inocybe subhimalayanensis Razzaq, Naseer & Khalid sp. nov. was collected from moist temperate sub-Himalayan region, Pakistan. Phylogeny of ITS and LSU regions of nrDNA, and morphoanatomical data make it distinct from other known species of the genus. The taxon is characterized by: a yellowish orange to brown pileus with prominent fibrillose, prominent umbo; ellipsoid to amygdaliform smooth larger basidiospores (8.4‒)8.6‒12.2(‒12.6) × (4.9‒)5.1‒7.1(‒7.3) µm; and lack of velipellis. Molecular phylogenetic analyses further support the recognition of the new species.
Inocybe hopeae sp. nov. and first record of Pseudosperma keralense (Inocybaceae) from Thailand
(2023)
Based on genetic studies, supported further by morphological and ecological differences, we present a taxonomic novelty (Inocybe hopeae Raghoonundon & Raspé sp. nov.) and a new geographical record (Pseudosperma keralense) from forests of Northern Thailand. Inocybe hopeae is characterized by medium-sized basidiomes, brownish orange to brown pileus that is darker towards the margin, off-white to pale brown context, light brown to dark brown stipe with off-white basal mycelium and pale brown to grayish brown lamellae. A three-gene phylogeny (LSU, tef1, rpb2) coupled with macroscopic / microscopic descriptions and illustrations are provided confirming the species’ positions in their respective generic clades. Inocybe hopeae was sister to I. thailandica with strong support (BS = 100%, PP = 1.0). Our Thai collections of OR1629 had similar morphological characters and 100% identical sequences with the holotype of Pseudosperma keralense from India.
Three novel species collected from Dinghushan Biosphere Reserve (DHSBR) in southern China, Russula cylindrica Y.Song sp. nov. and R. lacteocarpa Y.Song sp. nov. in subgenus Archaeae and R. reticulofolia Y.Song sp. nov. in subg. Compactae, are described based on morphological and molecular data. In addition, Russula leucobrunnea Y.Song nom. nov. is proposed in replacement of R. leucocarpa nom. illeg. in subg. Brevipedum, as R. leucocarpa (T.Lebel) T.Lebel had been described earlier. Differences between the three novel species and their closely related taxa were analyzed. Another two known species in subg. Brevipedum, R. callainomarginis J.F.Liang & J.Song and R. japonica Hongo were also identified among specimens from DHSBR and are described and illustrated. Phylogenetic analyses of ITS and a five-locus phylogeny (concatenated LSU, mtSSU, rpb1, rpb2 and tef1) support the recognition of these taxa.
Two new species, Russula pseudopunicea C.L.Hou, G.Q.Cheng & H.Zhou sp. nov. and R. wulingshanensis C.L.Hou, G.Q.Cheng & H.Zhou sp. nov., from Yanshan mountains in North China are described herein based on morphological and phylogenetic analyses of nrITS, and nrLSU-rpb2-mtSSU gene regions. Morphologically, R. pseudopunicea sp. nov. is characterised by a reddish brown, light brown to brownish orange pileus with a greyish yellow margin, subglobose to broadly ellipsoid basidiospores with warts forming a partial reticulum and pleurocystidia turning grey to purplish red in sulfovanillin. Russula wulingshanensis sp. nov. is characterised by a purple pinkish pileus with a grey-white to grey-purple margin, subglobose to broadly ellipsoid basidiospores with isolated warts, and pileocystidia turning black in sulfovanillin. Phylogenetic and morphological analyses resolved the two species in Russula subg. Heterophyllidia. Russula pseudopunicea sp. nov. and R. wulingshanensis sp. nov. were placed in the lineages of subsect. Virescentinae and subsect. Griseinae, respectively.
Two novel species of Russula (Russulaceae, Russulales), namely Russula indosenecis A.Ghosh, D.Chakr., K.Das & Buyck sp. nov. and R. pseudosenecis A.Ghosh, D.Chakr., K.Das & Buyck sp. nov. belonging to sect. Ingratae subg. Heterophyllidiae are proposed herein based on their morphological features and nrITS-based phylogenetic inferences. Both species belong to the Asian ʻR. punctipes-senecisʼ complex of sect. Ingratae. The acrid R. indosenecis was collected from subalpine forests associated with Abies densa, whereas the mild R. pseudosenecis associates with tropical forests dominated by Shorea robusta. Both species are distinct from the other species of this species complex in nrITS sequence data and from all other known species in subg. Heterophyllidiae in the strong amyloidity of their suprahilar spot.
Holocarpic oomycetes are poorly known but widespread parasites in freshwater and marine ecosystems. Most of the holocarpic species seem to belong to clades that diverge before the two crown lineages of the oomycetes, the Saprolegniomycetes and the Peronosporomycetes. Recently, the genus Miracula was described to accommodate Miracula helgolandica, a holocarpic parasitoid of Pseudo-nitzschia diatoms, which received varying support for its placement as the earliest-diverging oomycete lineage. In the same phylogenetic reconstruction, Miracula helgolandica was grouped with some somewhat divergent sequences derived from environmental sequencing, indicating that Miracula would not remain monotypic. Here, a second species of Miracula is reported, which was found as a parasitoid in the limnic centric diatom Pleurosira leavis. Its life-cycle stages are described and depicted in this study and its phylogenetic placement in the genus Miracula revealed. As a consequence, the newly discovered species is introduced as Miracula moenusica.
With the change to one scientific name for pleomorphic fungi, generic names typified by sexual and asexual morphs have been evaluated to recommend which name to use when two names represent the same genus and thus compete for use. In this paper, generic names in Pucciniomycotina and Ustilaginomycotina are evaluated based on their type species to determine which names are synonyms. Twenty-one sets of sexually and asexually typified names in Pucciniomycotina and eight sets in Ustilaginomycotina were determined to be congeneric and compete for use. Recommendations are made as to which generic name to use. In most cases the principle of priority is followed. However, eight generic names in the Pucciniomycotina, and none in Ustilaginomycotina, are recommended for protection: Classicula over Naiadella, Gymnosporangium over Roestelia, Helicobasidium over Thanatophytum and Tuberculina, Melampsorella over Peridermium, Milesina over Milesia, Phragmidium over Aregma, Sporobolomyces over Blastoderma and Rhodomyces, and Uromyces over Uredo. In addition, eight new combinations are made: Blastospora juruensis, B. subneurophyla, Cronartium bethelii, C. kurilense, C. sahoanum, C. yamabense, Milesina polypodii, and Prospodium crusculum combs. nov.
The lichen-forming genus Pertusaria under its current circumscription is polyphyletic and its phylogenetic affiliations are uncertain. Here we study the species of the genera Pertusaria and Varicellaria which containlecanoric acid as major constituent, have disciform apothecia, strongly amyloid asci, non-amyloid hymenial gel, 1-2-spored asci, and 1- or 2-celled ascospores with thick, 1-layered walls. We infer phylogenetic relationships using maximum likelihood and Bayesian analyses based on four molecular loci (mtSSU, nuLSU rDNA, and the protein-coding, nuclear RPB1 and MCM7 genes). Our results show that the lecanoric acid-containing species form a well-supported, monophyletic group, which is only distantly related to Pertusaria s.str. The phylogenetic position of this clade is unclear, but placement in Pertusaria s.str. is rejected using alternative hypothesis testing. The circumscription of the genus Varicellaria is enlarged to also include species with non-septate ascospores. Seven species are accepted in the genus: Varicellaria culbersonii (Vězda) Schmitt & Lumbsch, comb. nov., Varicellaria hemisphaerica (Flörke) Schmitt & Lumbsch, comb. nov., Varicellaria kasandjeffii (Szatala) Schmitt & Lumbsch, comb. nov., Varicellaria lactea (L.) Schmitt & Lumbsch, comb. nov., Varicellaria philippina (Vain.) Schmitt & Lumbsch, comb. nov., Varicellaria rhodocarpa (Körb.) Th. Fr., and Varicellaria velata (Turner) Schmitt & Lumbsch, comb. nov. A key to the species of Varicellaria is provided.