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Arthonia

The Experts below are selected from a list of 714 Experts worldwide ranked by ideXlab platform

Martin Grube – 1st expert on this subject based on the ideXlab platform

  • Arthoniaceae with reddish, K+ purple ascomata in Japan
    Phytotaxa, 2018
    Co-Authors: Andreas Frisch, Martin Grube, Hiroyuki Kashiwadani, Yoshihito Ohmura

    Abstract:

    Arthonia sanguinaria is described as new to science. The East Asian Arthonia lopingensis and the widely distributed Arthonia picea are reported as new to Japan from Honshu and the Ogasawara Islands, respectively. The phylogenetic position of A. picea , A. sanguinaria and Coniocarpon cinnabarinum from the Ogasawara Islands is shown by RAxML and Bayesian analysis of mtSSU, nLSU and RPB2 sequence data. Our results confirm the polyphyletic origin of quinoid pigments in Arthoniaceae. A key is presented to the Arthoniaceae with reddish ascomata in Japan.

  • Arthonia parietinaria a common but frequently misunderstood lichenicolous fungus on species of the xanthoria parietina group
    Fungal Biology, 2016
    Co-Authors: Antonia Fleischhacker, Andreas Frisch, Martin Grube, Walter Obermayer, Josef Hafellner

    Abstract:

    Arthonia parietinaria is described as new to science. Host of the type and at the same time the only confirmed host species is the foliose macrolichen Xanthoria parietina. Sequence data of nucLSU rRNA genes reveal a close relationship to Arthonia molendoi. A. parietinaria is recorded for many countries in Europe, western Asia, and northern Africa.

  • Arthonia parietinaria – A common but frequently misunderstood lichenicolous fungus on species of the Xanthoria parietina-group
    Fungal Biology, 2016
    Co-Authors: Antonia Fleischhacker, Andreas Frisch, Martin Grube, Walter Obermayer, Josef Hafellner

    Abstract:

    Arthonia parietinaria is described as new to science. Host of the type and at the same time the only confirmed host species is the foliose macrolichen Xanthoria parietina. Sequence data of nucLSU rRNA genes reveal a close relationship to Arthonia molendoi. A. parietinaria is recorded for many countries in Europe, western Asia, and northern Africa.

Andreas Frisch – 2nd expert on this subject based on the ideXlab platform

  • Phylogenetic position of SynArthonia (lichenized Ascomycota, Arthoniaceae), with the description of six new species
    Plant Ecology and Evolution, 2018
    Co-Authors: Dries Van Den Broeck, Andreas Frisch, Tahina Razafindrahaja, Bart Van De Vijver, Damien Ertz

    Abstract:

    Background and aims – The Arthoniaceae form a species-rich family of lichenized, lichenicolous and saprophytic fungi in the order Arthoniales. As part of taxonomic revisions of the African Arthoniaceae, a number of species assignable to the genus SynArthonia were collected and sequenced. The present study aims at placing the genus in a phylogeny for the first time and at clarifying its circumscription. Methods – Nuclear (RPB2) and mitochondrial (mtSSU) DNA sequences from freshly collected specimens were obtained and analysed with phylogenetic Bayesian and maximum likelihood (ML) methods. Key results – SynArthonia is closely related to the genera Reichlingia and Coniocarpon in the Arthoniaceae. Six SynArthonia species are described as new to science and ten new combinations into this genus are made. A worldwide identification key to the genus SynArthonia is provided. Lectotypes are chosen for Arthonia elegans, A. inconspicua, A. lopingensis, A. ochracea, A. subcaesia and A. translucens. Arthonia thamnocarpa is synonymized with Sclerophyton elegans, and Arthonia elegans with Coniocarpon fallax. SynArthonia ochracea is shown to be a misunderstood species in the past and recent literature, since it was erroneously synonymized with Coniocarpon elegans. SynArthonia ochracea appears to start its life cycle as a non-lichenized lichenicolous fungus on Graphis before developing a lichenized thallus or it might be a facultatively lichenicolous fungus. It belongs to a complex of closely related species whose biology and circumscription are still in need of further studies.Conclusions – SynArthonia forms a monophyletic but somewhat heterogeneous lineage closely related to Coniocarpon and Reichlingia. As delimited here, SynArthonia includes corticolous lichens with a trentepohlioid photobiont as well as non-lichenized lichenicolous fungi. The core group is characterized by white pruinose ascomata, but species producing orange pruinose or non-pruinose ascomata are also included. Ascospores are transversely septate with an enlarged apical cell or are muriform. Future molecular and morphological studies are needed for a better circumscription and definition of the genus.

  • Arthoniaceae with reddish, K+ purple ascomata in Japan
    Phytotaxa, 2018
    Co-Authors: Andreas Frisch, Martin Grube, Hiroyuki Kashiwadani, Yoshihito Ohmura

    Abstract:

    Arthonia sanguinaria is described as new to science. The East Asian Arthonia lopingensis and the widely distributed Arthonia picea are reported as new to Japan from Honshu and the Ogasawara Islands, respectively. The phylogenetic position of A. picea , A. sanguinaria and Coniocarpon cinnabarinum from the Ogasawara Islands is shown by RAxML and Bayesian analysis of mtSSU, nLSU and RPB2 sequence data. Our results confirm the polyphyletic origin of quinoid pigments in Arthoniaceae. A key is presented to the Arthoniaceae with reddish ascomata in Japan.

  • draft genome sequence and annotation of the lichen forming fungus Arthonia radiata
    Genome Announcements, 2018
    Co-Authors: Ellie E Armstrong, Andreas Frisch, Damien Ertz, Stefan Prost, Martin Westberg, Mika Bendiksby

    Abstract:

    ABSTRACT We report here the draft de novo genome assembly, transcriptome assembly, and annotation of the lichen-forming fungus Arthonia radiata (Pers.) Ach., the type species for Arthoniomycetes, a class of lichen-forming, lichenicolous, and saprobic Ascomycota. The genome was assembled using overlapping paired-end and mate pair libraries and sequenced on an Illumina HiSeq 2500 instrument.

Robert Lücking – 3rd expert on this subject based on the ideXlab platform

  • is stirtonia alba in north america resolving a nomenclatural impasse and assessing the taxonomic status of the Arthonia alba complex
    The Bryologist, 2018
    Co-Authors: Gary B Perlmutter, Eimy Rivas Plata, Robert Lücking

    Abstract:

    The invalid combination Stirtonia alba (Mull. Arg.) ined., based on Arthonia alba Mull. Arg., is listed for the continental United States in several important online repositories, including CNALH, USDA PLANTS and EOL. Although Arthonia alba belongs in Stirtonia, the name cannot be used in that combination, as it is blocked by S. alba Groenh. ex Makhija & Patw., a species described from Java, Indonesia, and both taxa are distinct morphologically, anatomically and chemically. Here, we resolve this nomenclatural impasse by proposing the new name S. caribaea for A. alba. We examined further material identified as “A. alba / S. alba” from North America and the Caribbean. Specimens ascribed to “S. alba (Mull. Arg.) ined.” from North America (Louisiana, Florida) were found to be misidentifications in other genera, with only one collection confirmed as a Stirtonia. This specimen was determined to be S. punctiformis, and is here reported as new to North America, representing a northward range extension from Central America and northern South America. Therefore, the name “Arthonia alba Mull. Arg.” listed under Stirtonia in the North American lichen checklist should be removed. Caribbean material previously identified as A. alba was found to represent two species: A. alba s.str., here renamed S. caribaea, known from Cuba and St. John of the U.S. Virgin Islands; and S. borinquensis, which we describe as a new species from Puerto Rico.

  • Seven new records of foliicolous lichens from Vietnam
    Mycotaxon, 2011
    Co-Authors: Thi Thuy Nguyen, Robert Lücking, Yogesh Joshi, Anh Dzung Nguyen, Xin Yu Wang

    Abstract:

    Seven foliicolous species growing in tropical regions of Vietnam are reported as new to the country. Described are Arthonia accolens, Calenia aspidota, Calopadia subcoerulescens, Coenogonium minimum, Fellhanera rhapidophylli, F. semecarpi, and Porina subnitidula. Among them, Coenogonium minimum and Porina subnitidula are reported for the first time from the paleotropics.

  • Unravelling the phylogenetic relationships of lichenised fungi in Dothideomyceta
    Studies in Mycology, 2009
    Co-Authors: Matthew P. Nelsen, Robert Lücking, Martin Grube, Joelle Mbatchou, Lucia Muggia, E. Rivas Plata, H. T. Lumbsch

    Abstract:

    We present a revised phylogeny of lichenised Dothideomyceta (Arthoniomycetes and Dothideomycetes) based on a combined data set of nuclear large subunit (nuLSU) and mitochondrial small subunit (mtSSU) rDNA data. Dothideomyceta is supported as monophyletic with monophyletic classes Arthoniomycetes and Dothideomycetes; the latter, however, lacking support in this study. The phylogeny of lichenised Arthoniomycetes supports the current division into three families: Chrysothrichaceae (Chrysothrix), Arthoniaceae (Arthonia s. l., Cryptothecia, Herpothallon), and Roccellaceae (Chiodecton, Combea, Dendrographa, Dichosporidium, Enterographa, Erythrodecton, Lecanactis, Opegrapha, Roccella, Roccellographa, Schismatomma, Simonyella). The widespread and common Arthonia caesia is strongly supported as a (non-pigmented) member of Chrysothrix. Monoblastiaceae, Strigulaceae, and Trypetheliaceae are recovered as unrelated, monophyletic clades within Dothideomycetes. Also, the genera Arthopyrenia (Arthopyreniaceae) and Cystocoleus and Racodium (Capnodiales) are confirmed as Dothideomycetes but unrelated to each other. Mycomicrothelia is shown to be unrelated to Arthopyrenia s.str., but is supported as a monophyletic clade sister to Trypetheliaceae, which is supported by hamathecium characters. The generic concept in several groups is in need of revision, as indicated by non-monophyly of genera, such as Arthonia, Astrothelium, Cryptothecia, Cryptothelium, Enterographa, Opegrapha, and Trypethelium in our analyses.