Cryptodiscus muriformis and Schizoxylon gilenstamii, two new species of Stictidaceae (Ascomycota)

Fernández-Brime, Samantha; Olariaga, Ibai; Baral, Hans-Otto; Friebes, Gernot; Jaklitsch, Walter M.; Senn-Irlet, Béatrice; Wedin, Mats

doi:10.1007/s11557-017-1363-4

Cited by 11 publications

(14 citation statements)

References 19 publications

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“…Stictidaceae comprises both lichenized and non-lichenized fungi [ 1 , 3 , 18 , 19 , 28 , 31 , 32 , 33 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 ]. Based on Fries’s classification [ 62 ], Stictis (including subgen.…”

Section: Resultsmentioning

confidence: 99%

“…Lifestyle switches are overall unusually frequent in Ostropales sensu lato , showing the evolutionary plasticity of this enigmatic group [ 26 , 85 , 86 , 87 ]. More detailed molecular studies and increased taxon sampling are also needed to resolve generic and species-level limits in the family [ 31 ]. Surprisingly, our phylogeny suggests that the only problematic genus at this point is the polyphyletic Stictis sensu lato .…”

Section: Discussionmentioning

confidence: 99%

“…Ostropales was recently very broadly defined [ 1 ] and reduced to a single family, Stictidaceae, whereas related families are now recognized in the separate orders Graphidales, Gyalectales, Odontotrematales, and Thelenellales [ 13 , 30 ]. Stictidaceae includes mostly small, drought-tolerant fungi [ 31 ], which have been poorly studied, and their generic delimitation is yet to be resolved [ 19 , 31 , 32 ]. There are many opportunities for discovering new species, even in well-studied areas [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

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The Evolution of Life Modes in Stictidaceae, with Three Novel Taxa

Thiyagaraja

Lücking

Ertz

et al. 2021

JoF

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Ostropales sensu lato is a large group comprising both lichenized and non-lichenized fungi, with several lineages expressing optional lichenization where individuals of the same fungal species exhibit either saprotrophic or lichenized lifestyles depending on the substrate (bark or wood). Greatly variable phenotypic characteristics and large-scale phylogenies have led to frequent changes in the taxonomic circumscription of this order. Ostropales sensu lato is currently split into Graphidales, Gyalectales, Odontotrematales, Ostropales sensu stricto, and Thelenellales. Ostropales sensu stricto is now confined to the family Stictidaceae, which includes a large number of species that are poorly known, since they usually have small fruiting bodies that are rarely collected, and thus, their taxonomy remains partly unresolved. Here, we introduce a new genus Ostropomyces to accommodate a novel lineage related to Ostropa, which is composed of two new species, as well as a new species of Sphaeropezia, S. shangrilaensis. Maximum likelihood and Bayesian inference analyses of mitochondrial small subunit spacers (mtSSU), large subunit nuclear rDNA (LSU), and internal transcribed spacers (ITS) sequence data, together with phenotypic data documented by detailed morphological and anatomical analyses, support the taxonomic affinity of the new taxa in Stictidaceae. Ancestral character state analysis did not resolve the ancestral nutritional status of Stictidaceae with confidence using Bayes traits, but a saprotrophic ancestor was indicated as most likely in a Bayesian binary Markov Chain Monte Carlo sampling (MCMC) approach. Frequent switching in nutritional modes between lineages suggests that lifestyle transition played an important role in the evolution of this family.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Evolution of Life Modes in Stictidaceae, with Three Novel Taxa

Thiyagaraja

Lücking

Ertz

et al. 2021

JoF

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“…Species of Stictis have periphysoids (Wedin et al 2005, 2006), suggesting that the importance of this character (=presence vs absence of periphysoids) might have been overestimated for generic delimitation. These different genera were maintained until now (Lumbsch & Papong 2009; Fernandéz-Brime et al 2011, 2018), however, and the generic delimitations in the Stictidaceae need further investigation. Because Stictis is a large and poorly known group with many species that are mainly tropical, short-lived and growing on debris of various sorts, it is much more likely that the genus will eventually ‘fall to pieces’ (Mats Wedin, personal communication), as suggested by the results of recent studies in the family (e.g.…”

Section: Discussionmentioning

confidence: 99%

Thelopsis challenges the generic circumscription in the Gyalectaceae and brings new insights to the taxonomy of Ramonia

Ertz

Sanderson²,

Lebouvier

2021

The Lichenologist

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The genus Thelopsis was classified in the family Stictidaceae but its systematic position has never been investigated by molecular methods. In order to determine its family placement and to test its monophyly, fungal DNA of recent collections of Thelopsis specimens was sequenced. Phylogenetic analyses using nuLSU, RPB2 and mtSSU sequences reveal that members of Thelopsis form a monophyletic group within the genus Gyalecta as currently accepted. The placement of Thelopsis, including the generic type T. rubella, within the genus Gyalecta challenges the generic circumscription of this group because Thelopsis is well recognized by the combination of morphological characters: perithecioid ascomata, well-developed periphysoids, polysporous asci and small, few-septate ellipsoid-oblong ascospores. The sterile sorediate Opegrapha corticola is also placed in the Gyalectaceae as sister species to Thelopsis byssoidea + T. rubella. Ascomata of O. corticola are illustrated for the first time and support its placement in the genus Thelopsis. The hypothesis that O. corticola might represent the sorediate fertile morph of T. rubella is not confirmed because the species is phylogenetically and morphologically distinct. Thelopsis is recovered as polyphyletic, with T. melathelia being placed as sister species to Ramonia. The new combinations Thelopsis corticola (Coppins & P. James) Sanderson & Ertz comb. nov. and Ramonia melathelia (Nyl.) Ertz comb. nov. are introduced and a new species of Gyalecta, G. amsterdamensis Ertz, is described from Amsterdam and Saint-Paul Islands, characterized by a sterile thallus with discrete soralia. Petractis luetkemuelleri and P. nodispora are accommodated in the new genus Neopetractis, differing from the generic type (P. clausa) by having a different phylogenetic position and a different photobiont. Francisrosea bicolor Ertz & Sanderson gen. & sp. nov. is described for a sterile sorediate lichen somewhat similar to Opegrapha corticola but having an isolated phylogenetic position as sister to a clade including Gyalidea praetermissa and the genera Neopetractis and Ramonia. Gyalecta farlowii, G. nidarosiensis and G. carneola are placed in a molecular phylogeny for the first time. The taxonomic significance of morphological characters in Gyalectaceae is discussed.

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“…Moreover, an extensive polyphasic study on the genus Coccodiella (Phyllachorales) is also provided [12], and the phylogenetic position of the genus Symbiotaphrina as a member of Xylonomycetes is clarified [13]. Last, but not least, the Dothideomycetes are also represented in two studies on the mycobiota of Alnus [14] and Lotus [15], respectively, and two new species in the Ostropales (Lecanoromycetes) are described [16].…”

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confidence: 99%

Editorial to the Special Issue dedicated to Prof. Richard P. Korf

2018

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This Special Issue is dedicated to the memory of Prof. Richard P. (Dick) Korf, a pioneer in the systematics and taxonomy of the Ascomycota. Dick's career spanned the era in which systematists strived to understand the diversity of fungi through detailed field and laboratory investigations of morphology, development and life history studies.Dick exemplified the best of this era, carrying out extensive field work and preparing treatments that became standard references for work on the cup-fungi. He rationalized the terminology used in descriptions of discomycetes, and he and his students prepared monographic treatments of groups in the Leotiomycetes and the Pezizomycetes. His enthusiasm toward this group of fungi was demonstrated by the many hours he would spend in the field, always knowing where to find these "discos", and making comments that would add a "magical touch" to everything, as when his students were not finding any of these minute fungi: "keep staring, they'll just start winking at you". This same theory was applied by him to the long hours spent looking into the microscope; there was always something he saw that no-one else had seen. He contributed to the stabilization of the nomenclature through his vast knowledge of the literature and his acute reading and application of the Code.With his friend and colleague, Grégoire Hennebert, he founded the journal Mycotaxon. He nurtured this venture, which has provided a reliable outlet for taxonomic and nomenclatural writings since 1974. As mycology and systematics took on molecular phylogenetics, he maintained a vivid curiosity as to how traditional systems and those that were molecularly based would reconcile. That field work and basic biology of these fungi were still both important and necessary was highlighted by his address, "Dreams and nightmares of Latin American Ascomycete Taxonomists", to the Latin American Mycological Association in 2011 (Available at http://www.mycotaxon. com/dreams.pdf). In precise and lucid prose, he wrote not just about fungi but about the history of mycology at Cornell, and about the people who had influenced him over his career.Several biographical notes have been published, and a number of Mycotaxon include reminiscences by many of those who knew Dick (Norvell 2016;Pfister et al. 2017;Rossman and Zhuang 2016). He collected fungi in many regions of the world, frequently taking his more than 35 students on these trips, since he considered that an important part of being a mycologist was to know how and where to find them, and to understand them in the field. His expeditions to Southeast Asia, the islands of Macaronesia, islands of the Caribbean, and the United States, mainly New York, resulted in almost 260 species new to science, and more than 5000 collections. Other specialists have recognized him by naming three genera and at least 16 species of fungi after him.

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Cryptodiscus muriformis and Schizoxylon gilenstamii, two new species of Stictidaceae (Ascomycota)

Cited by 11 publications

References 19 publications

The Evolution of Life Modes in Stictidaceae, with Three Novel Taxa

The Evolution of Life Modes in Stictidaceae, with Three Novel Taxa

Thelopsis challenges the generic circumscription in the Gyalectaceae and brings new insights to the taxonomy of Ramonia

Editorial to the Special Issue dedicated to Prof. Richard P. Korf

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