A new species of <i>Acanthostigma</i> (Tubeufiaceae, Dothideomycetes) from the southern hemisphere

Sánchez, Romina M.; Miller, Andrew N.; Bianchinotti, M. Virginia

doi:10.3852/11-105

Cited by 14 publications

(15 citation statements)

References 16 publications

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“…An alternative approach would be to clump all Tubeufialike species illustrated above and anamorphs in a single large speciose genus (see Promputtha and Miller 2010;Sánchez et al 2011). We however feel that there is enough morphological differences and molecular evidence to support the differentiation of genera and follow this option.…”

Section: Discussionmentioning

confidence: 92%

“…There have been several molecular studies of Tubeufiaceae and its anamorphs (Kodsueb et al 2004;Tsui et al , 2007Promputtha and Miller 2010;Sánchez et al 2011) but these studies have only partially resolved the generic concepts used within the family. This is mainly because these studies were unable to use strains of generic types or other species because they did not exist.…”

Section: Discussionmentioning

confidence: 98%

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Revision of lignicolous Tubeufiaceae based on morphological reexamination and phylogenetic analysis

et al. 2011

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In this paper we revisit the family Tubeufiaceae with notes on genera that we have re-examined where possible. Generic type specimens of Acanthophiobolus, Kamalomyces, Podonectria, Thaxteriella and Thaxteriellopsis were re-examined, described and illustrated and shown to belong to Tubeufiaceae. Notes are provided on Acanthostigma, Chaetosphaerulina, Thaxterina and Tubeufia, which are retained in Tubeufiaceae; however, we were unable to locate the types of these genera during the time frame of this study. Allonecte is excluded from the Tubeufiaceae, as the ascospores are fusiform-ellipsoidal, grey-brown and 1-septate and the asci are cylindrical, all of which are features more typical of Pleosporaceae, where it is transferred. Byssocallis has yellow to orange ascomata and clavate ascospores which is atypical of Tubeufiaceae. Thus its taxonomic status needs to be reevaluated. Lentendraeopsis has an endophytic habit, cylindro-clavate asci and two-celled ascospores more typical of Pleosporales, where it is transferred. Taphrophila has small ascomata, a thin peridium, branching setae around the apex of the ascomata, clavate to saccate asci and lacks pseudoparaphyses. These are features atypical of the Tubeufiaceae, and Taphrophila should be placed in the Dothideomycetes incertae cedis. Twelve new collections of Tubeufiaceae from Thailand were isolated, and their DNA was extracted. The sequence data of LSU, SSU and ITS rDNA were amplified and analyzed using parsimony and likelihood methods. The results of phylogenetic analysis was used to establish the inter-generic relationships in Tubeufiaceae. Thaxteriellopsis lignicola, epitypified in this investigation, is a sister taxon in the family Tubeufiaceae based on phylogenetic analysis of rRNA sequence data. Chlamydotubeufia is introduced as a new genus based on the production of dictyochlamydosporous anamorphs, including two new species. Three new species, one each in Acanthostigma, Tubeufia and Thaxteriella are also described and illustrated. The phylogenetic placement of these genera is also discussed.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 98%

Revision of lignicolous Tubeufiaceae based on morphological reexamination and phylogenetic analysis

et al. 2011

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“…Phylogenetic trees BLAST search of new sequences were performed to verify the identities of species with sexual and asexual states, Tubeufiaceae in the GenBank database (Kodsueb et al 2004; Promputtha and Miller 2010;Boonmee et al 2011;Sánchez et al 2012). Details of sequences are provided in Supplementary Table 1.…”

Section: Molecular Data Analysesmentioning

confidence: 99%

“…) Clauzade & Vězda DUKE 0047570, Arthoniomycetes). The second dataset focus on phylogenetic relationships within taxa of the Tubeufiaceae Promputtha and Miller 2010;Boonmee et al 2011;Sánchez et al 2012), focued by using the combination of LSU and ITS sequences, consisting of 68 taxa including the outgroup (Botryosphaeria dothidea (Moug.) Ces.…”

Section: Molecular Data Analysesmentioning

confidence: 99%

Tubeufiales, ord. nov., integrating sexual and asexual generic names

et al. 2014

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Tubeufiaceae is based on the generic type Tubeufia, which is characterized by superficial, oval and bright ascomata, bitunicate asci, mostly long fusiform to filiform, transeptate ascospores and hyphomycetous asexual states with helicosporous conidia. Most species in this family are saprobic on terrestrial woody substrates and some are aquatic. Their distinct morphology as well as combined LSU, SSU and TEF1 sequence analysis show that Tubeufiaceae should be accommodated in a new order Tubeufiales, which is introduced in this paper. Phylogenetic analyses of combined LSU and ITS sequences were used to resolve genera and species within the family Tubeufiaceae. In this study, we examine and incorporate sexual and asexual states of genera in Tubeufiales to provide a modern treatment, based on single names. An epitype for Tubeufia javanica, the type species of Tubeufia, is designated and represents Tubeufia sensu stricto. The genera Acanthophiobolus, Acanthostigma, Boerlagiomyces, Chlamydotubeufia, Kamalomyces, Podonectria, Thaxteriella and Thaxteriellopsis are accepted, Acanthostigmina is reinstated, and the asexual genera Aquaphila, Helicoma, Helicomyces, Helicosporium and Tamhinispora are accepted in Tubeufiaceae. Three new genera Acanthohelicospora, Helicangiospora and Neoacanthostigma are introduced. The genus Bifrontia is added to the family based on morphological similarity. The incongruous morphological genera Acanthostigmella, Amphinectria, Uredinophila are excluded from Tubeufiaceae despite having characteristic ascomata with setae and multiseptate long spores.A key to genera accepted in Tubeufiaceae is provided.

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“…Helicocentralis is unique. Table 3 summarizes the similarities and differences between the different genera when we compare the morphology of selected genera from the Leotiomycetes and Dothideomycetes Sánchez and Bianchinotti 2010;Sánchez et al 2012;Boonmee et al 2011;. In the phylogenetic tree of ITS, Helicocentralis within the Leotiomycetes is distant from the genus Helicodendron (H. paradoxum as the type species, H. microsporum); although it shares some morphological characteristics, such as conidiophores micronematous or s e m i -m a c r o n e m a t o u s , a n d m o n o n e m a t o u s , a n d conidiogenous cells monoblastic, integrated, terminal, determinate, cylindrical and conidia three-dimensionally coiled (Fisher and Webster 1983; Table 3).…”

Section: Discussionmentioning

confidence: 99%

Helicocentralis hyalina gen. et sp. nov., an aero-aquatic helicosporous fungus (Leotiomycetes, Ascomycota) in Thailand

et al. 2015

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During a survey of aero-aquatic fungi in Thailand, an undescribed helicosporous fungus was discovered. It is characterized by the presence of branched and septate hyphae with hyaline conidiophores that are micronematous or semimacronematous, acrogenous and holoblastic. Conidia are hyaline and centrifugally coiled (excentric), helicoid or circinate, coiled 2-3 times clockwise or counterclockwise. After comparison of morphological and molecular characters with other aero-aquatic, helicosporous fungi, introduction of a new genus and species is proposed, Helicocentralis hyalina gen. et sp. nov. Phylogenetic analyses based on the combined sequence data from the small and large nuclear subunit ribosomal DNA (SSU and LSU), as well as internal transcribed spacer (ITS) rDNA sequence data, the fungus groups within the Leotiomycetes class with strong statistical support. The new genus is not related to other helicosporous hyphomycete genera (Helicoma, Helicomyces, Helicoön, and Helicosporium), which belong in the Tubeufiaceae, Dothideomycetes. Within the Leotiomycetes, our new fungus is distantly related to Helicodendron paradoxum (the type species). The new fungus is also compared morphologically to six similar helicosporous genera from Dothideomycetes and Leotiomycetes.

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A new species of Acanthostigma (Tubeufiaceae, Dothideomycetes) from the southern hemisphere

Cited by 14 publications

References 16 publications

Revision of lignicolous Tubeufiaceae based on morphological reexamination and phylogenetic analysis

Revision of lignicolous Tubeufiaceae based on morphological reexamination and phylogenetic analysis

Tubeufiales, ord. nov., integrating sexual and asexual generic names

Helicocentralis hyalina gen. et sp. nov., an aero-aquatic helicosporous fungus (Leotiomycetes, Ascomycota) in Thailand

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