Dominikia litorea, a new species in the Glomeromycotina, and biogeographic distribution of Dominikia

Phytotaxa ◽  
2018 ◽  
Vol 338 (3) ◽  
pp. 241 ◽  
Author(s):  
JANUSZ BŁASZKOWSKI ◽  
PRZEMYSŁAW RYSZKA ◽  
ANNA KOZŁOWSKA
Keyword(s):  
New Species ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Sand Dunes ◽  
Mycorrhizal Fungus ◽  
Single Species ◽  
Morphological Characters ◽  
Spore Wall ◽  
Mycorrhizal Symbiosis ◽  
Rpb1 Gene

An arbuscular mycorrhizal fungus (AMF) producing clusters with colourless, small (11‒35 µm diam when globose) spores of unique morphological characters of two spore wall layers was grown in a trap culture and in single-species cultures. Both the spore wall layers are permanent and have the same thickness. The features of the spores prompted that the fungus most probably belongs to one of the genera, Dominikia or Kamienskia. Phylogenetic analyses of sequences of the SSU‒ITS‒LSU nrDNA and the RPB1 gene showed that the discussed AMF is an undescribed Dominikia sp. highly diverged molecularly from the 12 so far described species of the genus. Consequently, the fungus is described here as D. litorea sp. nov. The sporulation of D. litorea in the trap culture indicated that in the field the new species lived in mycorrhizal symbiosis with Xanthium spinosum that had colonized sand dunes of the Mediterranean Sea located near Verico, Greece. However, comparisons of the SSU‒ITS‒LSU sequences of D. litorea with those obtained from molecular environmental studies, which are deposited in public databases, indicated that the new species probably is also associated with roots of an unnamed plant species growing in China. In addition, based on available literature, sequence data and personal observations, the so far known geographical distribution, habitats, and plant-hosts of the described Dominikia spp. were presented and discussed. Finally, the potential participation of Dominikia spp. in influencing plants and plant communities with which they are associated and ecosystems in which they exist were discussed.

Dominikia lithuanica and Kamienskia divaricata: new species in the Glomeromycota

Botany ◽  
2016 ◽  
Vol 94 (12) ◽  
pp. 1075-1085 ◽  
Author(s):  
Janusz Błaszkowski ◽  
Gerard Chwat ◽  
Anna Góralska
Keyword(s):  
South Africa ◽  
New Species ◽  
Sequence Data ◽  
Sand Dunes ◽  
Spore Wall ◽  
Curonian Spit ◽  
Laminate Layer ◽  
Rpb1 Gene ◽  
Layer 2 ◽  
Lsu Nrdna

New species in the genera Dominikia and Kamienskia (Glomeromycota) are characterized based on morphology and sequences of SSU–ITS–LSU nrDNA and the RPB1 gene. Both species produce glomoid spores only in clusters. Spores of Dominikia lithuanica are hyaline to pale yellow and 22–52 μm in diameter when globose. In their three-layered spore wall, layers 1 and 2 are almost equal in thickness and much thinner than the structural laminate layer 3. Spore wall layers 1 and 3 usually stain faintly in Melzer’s reagent. Spores of Kamienskia divaricata remain hyaline regardless of age, are 10–24 μm in diameter and have a spore wall with two layers of nearly the same thickness. The laminate layer 2 usually shows a faint dextrinoid reaction in Melzer’s reagent. A further conspicuous character of K. divaricata spores is a relatively wide subtending hypha at the spore base. In the field, D. lithuanica and K. divaricata have so far been found only twice and once, respectively, and only in maritime sand dunes of the Curonian Spit, Lithuania (D. lithuanica), and South Africa (K. divaricata). Sequence data available in public databases suggest that D. lithuanica has not yet been detected by other researchers, and K. divaricata also occurs in Texas, USA.

scholarly journals Dominikia emiratia and Rhizoglomus dunense, two new species in the Glomeromycota

Botany ◽  
2017 ◽  
Vol 95 (7) ◽  
pp. 629-639 ◽  
Author(s):  
Mohamed N. Al-Yahya’ei ◽  
Sangeeta Kutty Mullath ◽  
Laila A. AlDhaheri ◽  
Anna Kozłowska ◽  
Janusz Błaszkowski
Keyword(s):  
New Species ◽  
United Arab Emirates ◽  
Mycorrhizal Fungi ◽  
Phylogenetic Analyses ◽  
Sand Dunes ◽  
Spore Wall ◽  
Wall Layer ◽  
Ammophila Arenaria ◽  
Rpb1 Gene ◽  
Two New Species

The morphological, histochemical, and molecular properties of two new species of arbuscular mycorrhizal fungi (AMF; Glomeromycota) have been characterized. The first species is distinguished by spores that are orange to brownish orange, small, and formed only in clusters and mainly by having two laminate layers in a three-layered spore wall, with layer three staining dark in Melzer’s reagent. Despite the morphological similarity to some Septoglomus spp., phylogenetic analyses of sequences of the SSU–ITS–LSU nrDNA region and the RPB1 gene accommodated the fungus in the genus Dominikia, hence it was named Dominika emiratia. Intact spores of the second species, named Rhizoglomus dunense, closely resemble colourless isolates of R. clarum, but their spore wall layer three never becomes coloured with age, as does that in most R. clarum spores, and most importantly, the two fungi are separated by a large molecular distance. Dominikia emiratia was originally extracted from the rhizosphere of three plant species cultivated in two fields in a sandy desert in the Emirate of Abu Dhabi of the United Arab Emirates. Rhizoglomus dunense was found in a trap culture inoculated with the rhizosphere soil and root fragments of Ammophila arenaria, which had colonized sand dunes of the Mediterranean Sea, located near Thessalonica, Greece.

scholarly journals New species in Dictyosporium, new combinations in Dictyocheirospora and an updated backbone tree for Dictyosporiaceae

MycoKeys ◽  
2018 ◽  
Vol 36 ◽  
pp. 83-105 ◽  
Author(s):  
Jing Yang ◽  
Jian-Kui Liu ◽  
Kevin D. Hyde ◽  
E.B. Gareth Jones ◽  
Zuo-Yi Liu
Keyword(s):  
New Species ◽  
New Taxa ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Morphological Characters ◽  
Freshwater Fungi ◽  
New Combinations ◽  
The Family ◽  
Two New Species ◽  
Backbone Tree

A survey of freshwater fungi on submerged wood in China and Thailand resulted in the collection of three species in Dictyocheirospora and four species in Dictyosporium including two new species in the latter genus. Morphological characters and phylogenetic analyses based on ITS, LSU and TEF1α sequence data support their placement in Dictyocheirospora and Dictyosporium (Dothideomycetes). An updated backbone tree is provided for the family Dothideomycetes. Descriptions and illustrations of the new taxa and re-collections are provided. Four new combinations are proposed for Dictyocheirospora.

Dominikia duoreactiva sp. nov. and Dominikia difficilevidera sp. nov., two new species in the Glomeromycota

Botany ◽  
2015 ◽  
Vol 93 (7) ◽  
pp. 389-396 ◽  
Author(s):  
Janusz Błaszkowski ◽  
Gerard Chwat ◽  
Sarah Symanczik ◽  
Anna Góralska
Keyword(s):  
New Species ◽  
Mycorrhizal Fungi ◽  
National Park ◽  
Phylogenetic Analyses ◽  
Arbuscular Mycorrhizal ◽  
Morphological Characters ◽  
Spore Wall ◽  
Worldwide Distribution ◽  
Two New Species ◽  
Dune Plants

Two new species of arbuscular mycorrhizal fungi (AMF) of the recently erected genus Dominikia (Glomeromycota) are described based on their morphology and phylogenetic analyses of SSU–ITS–LSU sequences. The distinctive morphological characters of the first species, Dominikia duoreactiva sp. nov., is the formation of loose clusters with yellow-coloured, 30–70 μm diameter spores having a three-layered spore wall, of which layers 1 and 3 stain in Melzer’s reagent. The second species, Dominikia difficilevidera sp. nov., is distinguished by its hyaline, 31–45 μm diameter spores, which arise mainly singly and have a three-layered spore wall, of which layer 1 is thicker than the structural laminate layer 2, and layer 3 is flexible to semi-flexible. Both species were originally associated with maritime dune plants; D. duoreactiva comes from the Giftun Island, Egypt, Africa, and D. difficilevidera from the Słowiński National Park, Poland. Based on available data, we suggest D. duoreactiva occurs rarely in the world, and D. difficilevidera has a worldwide distribution, but it either occurs infrequently or has been overlooked or lost during spore extraction from soils of many sites because of its extremely small and hyaline spores. A method allowing the extraction of even the smallest spores of AMF, but observable under a dissecting microscope, is described.

scholarly journals Morpho-phylogenetic evidence reveals new species in Rhytismataceae (Rhytismatales, Leotiomycetes, Ascomycota) from Guizhou Province, China

MycoKeys ◽  
2020 ◽  
Vol 76 ◽  
pp. 81-106
Author(s):  
Jin-Feng Zhang ◽  
Jian-Kui Liu ◽  
Kevin D. Hyde ◽  
Anusha H. Ekanayaka ◽  
Zuo-Yi Liu
Keyword(s):  
New Species ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Comparative Morphology ◽  
Morphological Characters ◽  
Molecular Data ◽  
Guizhou Province ◽  
Molecular Analyses ◽  
Phylogenetic Affinities ◽  
Karst Terrains

Karst formations represent a unique eco-environment. Research in the microfungi inhabiting this area is limited. During an ongoing survey of ascomycetous microfungi from karst terrains in Guizhou Province, China, we discovered four new species, which are introduced here as Hypoderma paralinderae, Terriera karsti, T. meitanensis and T. sigmoideospora placed in Rhytismataceae, based on phylogenetic analyses and morphological characters. Molecular analyses, based on concatenated LSU-ITS-mtSSU sequence data, were used to infer phylogenetic affinities. Detail descriptions and comprehensive illustrations of these new taxa are provided and relationships with the allied species are discussed, based on comparative morphology and molecular data.

scholarly journals Taxonomy and Phylogeny of the Fomitopsis pinicola Complex With Descriptions of Six New Species From East Asia

2021 ◽  
Vol 12 ◽  
Author(s):  
Shun Liu ◽  
Mei-Ling Han ◽  
Tai-Min Xu ◽  
Yan Wang ◽  
Dong-Mei Wu ◽  
...  
Keyword(s):  
New Species ◽  
East Asia ◽  
Rna Polymerase Ii ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Elongation Factor ◽  
Brown Rot ◽  
Morphological Characters ◽  
Host Specialization ◽  
Fomitopsis Pinicola

Fomitopsis pinicola is a common brown-rot fungal species found in northern hemisphere. It grows on many different gymnosperm and angiosperm trees. Recent studies show that it is a species complex; three species from North America and one species from Europe have been recognized in this complex. In the current study, six new species in the Fomitopsis pinicola complex were discovered from East Asia, based on morphological characters and phylogenetic analyses inferred from the sequence data of the internal transcribed spacer (ITS) regions, the second subunit of RNA polymerase II (RPB2), and the translation elongation factor 1-α gene (TEF). Detailed descriptions of the six new species are provided. Our results also indicates that species of the F. pinicola complex from East Asia usually have limited distribution areas and host specialization.

scholarly journals Confusion surrounding Didymosphaeria—phylogenetic and morphological evidence suggest Didymosphaeriaceae is not a distinct family

Phytotaxa ◽  
2014 ◽  
Vol 176 (1) ◽  
pp. 102 ◽  
Author(s):  
HIRAN A. ARIYAWANSA ◽  
ERIO CAMPORESI ◽  
KASUN M. THAMBUGALA ◽  
AUSANA MAPOOK ◽  
JI-CHUAN KANG ◽  
...  
Keyword(s):  
New Species ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Morphological Characters ◽  
Morphological Evidence ◽  
Nucleotide Sequence Data ◽  
The Family ◽  
Family Based ◽  
Phylogenetic Lineages ◽  
A New Species

Didymosphaeriaceae is a ubiquitous fungal family that is reported to include saprobic, endophytic and pathogenic species associated with a wide variety of substrates. The family is characterized by 1-septate ascospores and trabeculate pseudoparaphyses, mainly anastomosing above the asci. In recent treatments Appendispora, Didymosphaeria, Roussoella, Phaeodothis and Verruculina were placed in the family. The aim of the present study is to delineate phylogenetic lineages within Didymosphaeriaceae and allied genera. A new species, Didymosphaeria rubi-ulmifolii, was isolated and identified based on morphological characters and phylogenetic analyses of partial 18S nrDNA and 28S nrDNA nucleotide sequence data. Didymosphaeria rubi-ulmifolii clustered with Montagnulaceae as a separate genus, while two putative strains (HKUCC 5834 and CMW 22186) of D. futilis from GenBank clustered with Cucurbitariaceae and Didymellaceae, respectively. The new species is characterized by immersed to slightly erumpent ascomata immersed under a clypeus, a peridium with compressed cells of textura intricata, long trabeculate pseudoparaphyses, anastomosing mostly above the asci and brown, 1-septate ascospores with granulate ornamentation. Phylogenetic analysis in combination with morphology and a review of literature show that Appendispora, Phaeodothis, Roussoella and Verruculina should be excluded from the family. Phaeodothis belongs in Montagnulaceae, Verruculina in Testudinaceae, while Appendispora and Roussoella belong in Roussoellaceae. The position of Didymosphaeriaceae as a distinct family, based on 1-septate ascospores and trabeculate pseudoparaphyses, mainly anastomosing above the asci is doubtful. Fresh collections of more Didymosphaeria strains are needed for epitypification and to obtain sequence data to establish if this family can be maintained.

Sporidesmium guizhouense sp. nov. (Sordariomycetes incertae sedis), a new species from a freshwater habitat in Guizhou Province, China

Phytotaxa ◽  
2019 ◽  
Vol 422 (2) ◽  
pp. 144-156
Author(s):  
LING-LING LIU ◽  
JING YANG ◽  
NING-GUO LIU ◽  
YA-YA CHEN ◽  
XIAO-XIA GUI ◽  
...  
Keyword(s):  
New Species ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Morphological Characters ◽  
Systematic Position ◽  
Sensu Stricto ◽  
Guizhou Province ◽  
Freshwater Habitat ◽  
Incertae Sedis ◽  
A New Species

During a survey of freshwater fungi in Guizhou Province, China, a collection from a submerged decaying twig in Baihua Lake was identified as a new species of Sporidesmium sensu lato based on morphological characters and phylogenetic analyses of combined LSU, SSU, ITS, TEF1α and RPB2 sequence data. Phylogenetic analyses supported its placement in Sordariomycetes but the fungus grouped distant from Sporidesmium sensu stricto, and its ordinal or familial position within the class remained inconclusive. Sporidesmium guizhouense sp. nov. is introduced with an illustrated account and notes on its taxonomy, phylogeny and systematic position are provided.

scholarly journals Sieverdingia gen. nov., S. tortuosa comb. nov., and Diversispora peloponnesiaca sp. nov. in the Diversisporaceae (Glomeromycota)

2019 ◽  
Vol 18 (11) ◽  
pp. 1363-1382 ◽  
Author(s):  
Janusz Błaszkowski ◽  
Piotr Niezgoda ◽  
Jéssica Nunes de Paiva ◽  
Kássia Jéssica Galdino da Silva ◽  
Raquel Cordeiro Theodoro ◽  
...  
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Mycorrhizal Fungus ◽  
Arbuscular Mycorrhizal ◽  
Spore Wall ◽  
Molecular Characteristics ◽  
Rdna Sequences ◽  
The Family ◽  
Innermost Layer ◽  
Definition Of

Abstract Phylogenetic analyses of 18S–ITS–28S nuc rDNA sequences indicated that the arbuscular mycorrhizal fungus originally described as Glomus tortuosum and later transferred to the genus Corymbiglomus represents a separate, previously unrecognized clade at the rank of genus in the family Diversisporaceae (order Diversisporales, phylum Glomeromycota). The analyses located the clade between clades representing the genera Desertispora and Redeckera. Consequently, a new genus, Sieverdingia, was erected, with S. tortuosa comb. nov. The unique morphological feature of S. tortuosa is the formation of glomoid-like spores with a single-layered spore wall covered with a hyphal mantle. Importantly, the erection of Sieverdingia clarified the definition of Corymbiglomus, which currently consists of three species producing glomoid-like spores with one, three- to four-layered spore wall. The features of the innermost layer, which is hyaline, laminate, flexible to semi-flexible, indicate that it is a synapomorphy of Corymbiglomus. The definitions of Corymbiglomus and its species were emended. Moreover, the distribution of S. tortuosa and the three species of Corymbiglomus was discussed based on own studies, literature data, and molecular sequences deposited in public databases. We concluded that the distribution of S. tortuosa and C. globiferum known in environmental studies based on their partial 28S nuc rDNA sequences only may be understated because the main molecular characteristics distinguishing these species reside outside the 28S region. Finally, we described a new species in the genus Diversispora originating from Mediterranean dunes of the Peloponnese peninsula, Greece. The same phylogenetic analyses mentioned above indicated that the closest relative of the new species, producing dark-coloured spores, is D. clara, whose spores are creamy white at most.

Periconia thailandica (Periconiaceae), a new species from Thailand

Phytotaxa ◽  
2017 ◽  
Vol 323 (3) ◽  
pp. 253 ◽  
Author(s):  
NINGGUO LIU ◽  
SINANG HONGSANAN ◽  
JING YANG ◽  
D. JAYARAMA BHAT ◽  
JIANKUI LIU ◽  
...  
Keyword(s):  
New Species ◽  
Molecular Analysis ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
Morphological Characters ◽  
A New Species

Periconia thailandica is a new hyphomycetous species found on bamboo culms collected in Kamphaeng Phet, Thailand. We herein introduce P. thailandica based on morphological characters and molecular analysis. Phylogenetic analyses of combined ITS, LSU and SSU sequence data place the new species in Periconia (Pleosporales) where it forms a distinct clade in the genus. The new species is characterized by brown, 4−7-septate conidiophores with terminal, polyblastic, acropetally proliferating, globose conidiogenous cells, and light to dark brown, globose, verrucose conidia. The morphological comparisons between P. thailandica and other known Periconia species are discussed. The new species is introduced to accommodate this taxon with a detailed description and morphological illustrations.

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