Latest Articles from MycoKeys Latest 4 Articles from MycoKeys https://mycokeys.pensoft.net/ Fri, 29 Mar 2024 17:07:17 +0200 Pensoft FeedCreator https://mycokeys.pensoft.net/i/logo.jpg Latest Articles from MycoKeys https://mycokeys.pensoft.net/ Morpho-molecular characterisation of Arecophila, with A. australis and A. clypeata sp. nov. and A. miscanthi comb. nov. https://mycokeys.pensoft.net/article/79475/ MycoKeys 88: 123-149

DOI: 10.3897/mycokeys.88.79475

Authors: Qi Rui Li, Xu Zhang, Yan Lin, Milan C. Samarakoon, Kevin David Hyde, Xiang Chun Shen, Wan Qing Liao, Anuruddha Karunarathna, Si Han Long, Ying Qian Kang, Ji Chuan Kang

Abstract: Three arecophila-like fungal samples were collected on dead culms of gramineous plants in China. Morphological studies of our new collections and the herbarium specimen of Arecophila gulubiicola (generic type) were conducted and the morphological affinity of our new collections with Arecophila was confirmed. Maximum likelihood and Bayesian analyses using combined ITS, LSU, rpb2 and β-tubulin data from our collections revealed the phylogeny of Cainiaceae. The monospecific genus Alishanica (type species Al. miscanthi), which had been accepted in Cainiaceae, is revisited and synonymised under Arecophila. Based on morphology and phylogeny, Arecophila australis sp. nov. and A. clypeata sp. nov. are introduced as new species, while A. miscanthi is a new record for China. All the new collections are illustrated and described.

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Research Article Wed, 13 Apr 2022 18:52:43 +0300
Three new Xylaria species (Xylariaceae, Xylariales) on fallen leaves from Hainan Tropical Rainforest National Park https://mycokeys.pensoft.net/article/71623/ MycoKeys 86: 47-63

DOI: 10.3897/mycokeys.86.71623

Authors: Xiao-Yan Pan, Zi-Kun Song, Zhi Qu, Tie-Dong Liu, Hai-Xia Ma

Abstract: Three new species of Xylaria on fallen leaves in Hainan Province of China are described and illustrated, based on morphological and molecular evidence. Xylaria hedyosmicola is found on fallen leaves of Hedyosmum orientale and featured by thread-like stromata with a long sterile filiform apex. Phylogenetically, X. hedyosmicola is closely related to an undescribed Xylaria sp. from Hawaii Island, USA and morphologically similar to X. vagans. Xylaria lindericola is found on fallen leaves of Lindera robusta and characterised by its subglobose stromata and a long filiform stipe. It is phylogenetically closely related to X. sicula f. major. Xylaria polysporicola is found on fallen leaves of Polyspora hainanensis, it is distinguished by upright or prostrate stromata and ascospores sometimes with a slimy sheath or non-cellular appendages. Xylaria polysporicola is phylogenetically closely related to X. amphithele and X. ficicola. An identification key to the ten species on fallen leaves in China is given.

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Research Article Wed, 12 Jan 2022 15:14:06 +0200
A taxonomic study of Nemania from China, with six new species https://mycokeys.pensoft.net/article/69906/ MycoKeys 83: 39-67

DOI: 10.3897/mycokeys.83.69906

Authors: Yin Hui Pi, Si Han Long, You Peng Wu, Li Li Liu, Yan Lin, Qing De Long, Ji Chuan Kang, Ying Qian Kang, Chu Rui Chang, Xiang Chun Shen, Nalin N. Wijayawardene, Xu Zhang, Qi Rui Li

Abstract: During an investigation of Xylariaceae from 2019 to 2020, isolates representing eight Nemania (Xylariacese) species were collected from Yunnan, Guizhou and Hainan Provinces in China. Morphological and multi-gene phylogenetic analyses, based on combined ITS, α-actin, rpb2 and β-tubulin sequences, confirmed that six of them are new to science, viz. Nemania camelliae, N. changningensis, N. cyclobalanopsina, N. feicuiensis, N. lishuicola and N. rubi; one is a new record (N. caries) for China and one is a known species (N. diffusa). Morphological descriptions and illustrations of all species are detailed. In addition, the characteristics of Nemania are summarised and prevailing contradictions in generic concepts are discussed.

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Research Article Tue, 24 Aug 2021 12:02:54 +0300
Liberomyces pistaciae sp. nov., the causal agent of pistachio cankers and decline in Italy https://mycokeys.pensoft.net/article/28636/ MycoKeys 40: 29-51

DOI: 10.3897/mycokeys.40.28636

Authors: Salvatore Vitale, Dalia Aiello, Vladimiro Guarnaccia, Laura Luongo, Massimo Galli, Pedro W. Crous, Giancarlo Polizzi, Alessandra Belisario, Hermann Voglmayr

Abstract: A new canker and decline disease of pistachio (Pistacia vera) is described from Sicily (Italy). Observations of the disease and sampling of the causal agent started in spring 2010, in the area where this crop is typically cultivated, Bronte and Adrano (Catania province) and later extended to the Agrigento and Caltanissetta provinces. Isolations from the margins of twig, branch and stem cankers of declining plants resulted in fungal colonies with the same morphology. Pathogenicity tests on 5-year-old potted plants of Pistacia vera grafted on P. terebinthus reproduced similar symptoms to those observed in nature and the pathogen was confirmed to be a coloniser of woody plant tissue. Comparison of our isolates with the type of the apparently similar Asteromella pistaciarum showed that our isolates are morphologically and ecologically different from A. pistaciarum, the latter being a typical member of Mycosphaerellaceae. Asteromella pistaciarum is lectotypified, described and illustrated and it is considered to represent a spermatial morph of Septoria pistaciarum. Multi-locus phylogenies based on two (ITS and LSU rDNA) and three (ITS, rpb2 and tub2) genomic loci revealed isolates of the canker pathogen to represent a new species of Liberomyces within the Delonicicolaceae (Xylariales), which is here described as Liberomyces pistaciae sp. nov. (Delonicicolaceae, Xylariales). The presence of this fungus in asymptomatic plants with apparently healthy woody tissues indicates that it also has a latent growth phase. This study improves the understanding of pistachio decline, but further studies are needed for planning effective disease management strategies and ensuring that the pathogen is not introduced into new areas with apparently healthy, but infected plants.

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Research Article Tue, 18 Sep 2018 11:28:22 +0300