scholarly journals One stop shop IV: taxonomic update with molecular phylogeny for important phytopathogenic genera: 76–100 (2020)

2020 ◽  
Vol 103 (1) ◽  
pp. 87-218 ◽  
Author(s):  
Ruvishika S. Jayawardena ◽  
Kevin D. Hyde ◽  
Yi Jyun Chen ◽  
Viktor Papp ◽  
Balázs Palla ◽  
...  
Keyword(s):  
New Species ◽  
Molecular Phylogeny ◽  
Phytopathogenic Fungi ◽  
Disease Symptoms ◽  
Background Distribution ◽  
One Stop

Abstract This is a continuation of a series focused on providing a stable platform for the taxonomy of phytopathogenic fungi and fungus-like organisms. This paper focuses on one family: Erysiphaceae and 24 phytopathogenic genera: Armillaria, Barriopsis, Cercospora, Cladosporium, Clinoconidium, Colletotrichum, Cylindrocladiella, Dothidotthia,, Fomitopsis, Ganoderma, Golovinomyces, Heterobasidium, Meliola, Mucor, Neoerysiphe, Nothophoma, Phellinus, Phytophthora, Pseudoseptoria, Pythium, Rhizopus, Stemphylium, Thyrostroma and Wojnowiciella. Each genus is provided with a taxonomic background, distribution, hosts, disease symptoms, and updated backbone trees. Species confirmed with pathogenicity studies are denoted when data are available. Six of the genera are updated from previous entries as many new species have been described.

scholarly journals Molecular Phylogeny and Morphological Analysis Support a New Species and New Synonymy in Iranian Astragalus (Leguminosae)

PLoS ONE ◽  
2016 ◽  
Vol 11 (3) ◽  
pp. e0149726 ◽  
Author(s):  
Ali Bagheri ◽  
Ali Asghar Maassoumi ◽  
Mohammad Reza Rahiminejad ◽  
Frank R. Blattner
Keyword(s):  
New Species ◽  
Molecular Phylogeny ◽  
Morphological Analysis ◽  
New Synonymy ◽  
A New Species

scholarly journals Defects in Mitochondrial and Peroxisomal β-Oxidation Influence Virulence in the Maize Pathogen Ustilago maydis

2012 ◽  
Vol 11 (8) ◽  
pp. 1055-1066 ◽  
Author(s):  
Matthias Kretschmer ◽  
Jana Klose ◽  
James W. Kronstad
Keyword(s):  
Ustilago Maydis ◽  
Short Chain Fatty Acids ◽  
Phytopathogenic Fungi ◽  
Metabolic Adaptation ◽  
In Planta ◽  
Gene Encoding ◽  
Disease Symptoms ◽  
Content Type ◽  
C Terminus ◽  
Fungal Phytopathogens

ABSTRACTAn understanding of metabolic adaptation during the colonization of plants by phytopathogenic fungi is critical for developing strategies to protect crops. Lipids are abundant in plant tissues, and fungal phytopathogens in the phylum basidiomycota possess both peroxisomal and mitochondrial β-oxidation pathways to utilize this potential carbon source. Previously, we demonstrated a role for the peroxisomal β-oxidation enzyme Mfe2 in the filamentous growth, virulence, and sporulation of the maize pathogenUstilago maydis. However,mfe2mutants still caused disease symptoms, thus prompting a more detailed investigation of β-oxidation. We now demonstrate that a defect in thehad1gene encoding hydroxyacyl coenzyme A dehydrogenase for mitochondrial β-oxidation also influences virulence, although its paralog,had2, makes only a minor contribution. Additionally, we identified a gene encoding a polypeptide with similarity to the C terminus of Mfe2 and designated it Mfe2b; this gene makes a contribution to virulence only in the background of anmfe2Δ mutant. We also show that short-chain fatty acids induce cell death inU. maydisand that a block in β-oxidation leads to toxicity, likely because of the accumulation of toxic intermediates. Overall, this study reveals that β-oxidation has a complex influence on the formation of disease symptoms byU. maydisthat includes potential metabolic contributions to proliferationin plantaand an effect on virulence-related morphogenesis.

scholarly journals Molecular phylogeny of Ischnocnema (Anura: Brachycephalidae) with the redefinition of its series and the description of two new species

2018 ◽  
Vol 128 ◽  
pp. 123-146 ◽  
Author(s):  
Pedro P.G. Taucce ◽  
Clarissa Canedo ◽  
Júlia Soares Parreiras ◽  
Leandro O. Drummond ◽  
Paulo Nogueira-Costa ◽  
...  
Keyword(s):  
New Species ◽  
Molecular Phylogeny ◽  
Two New Species

scholarly journals Taxonomy and molecular phylogeny of the Neotropical genusAtlantoscia(Oniscidea, Philosciidae): DNA barcoding and description of two new species

2015 ◽  
Vol 174 (4) ◽  
pp. 702-717 ◽  
Author(s):  
Bianca L. Zimmermann ◽  
Ivanklin S. Campos-Filho ◽  
Maríndia Deprá ◽  
Paula B. Araujo
Keyword(s):  
New Species ◽  
Molecular Phylogeny ◽  
Dna Barcoding ◽  
Two New Species

A review of Cryphocricos Signoret, 1850 (Naucoridae: Cryphocricinae) with descriptions of three new species

Zootaxa ◽  
2021 ◽  
Vol 4958 (1) ◽  
pp. 72-94
Author(s):  
ROBERT W. SITES
Keyword(s):  
New Species ◽  
Molecular Phylogeny ◽  
Intraspecific Variation ◽  
New World ◽  
Morphological Features ◽  
Type Specimens ◽  
Three New Species ◽  
Aquatic Bugs ◽  
High Degree

The genus Cryphocricos Signoret, 1850 was recently determined in a molecular phylogeny to be distantly related to other taxa of the subfamily Cryphocricinae to the extent that it is now once again the sole member of the subfamily. This exclusively New World group of aquatic bugs lives in fast and usually turbulent current and respires by means of a plastron. Efforts to identify morphological features to distinguish among the species have largely fallen short, and some species have been established based on features that exhibit a high degree of intraspecific variation overlapping those of other species. Presented here is a review of the 13 described species with discussions of their features and photos of type specimens, and three new species from Venezuela and Colombia are described. Also presented is a diagnostic attribute unique to the enigmatic Cryphocricos barozzii Signoret, 1850. 

A new species of Raphidascaris (Nematoda: Raphidascarididae) infecting the fish Gymnogeophagus balzanii (Cichlidae) from the Pantanal wetlands, Brazil and a taxonomic update of the subgenera of Raphidascaris based on molecular phylogeny and morphology

2018 ◽  
Vol 94 ◽  
Author(s):  
L.S. Malta ◽  
F. Paiva ◽  
C. Elisei ◽  
L.E.R. Tavares ◽  
F.B. Pereira
Keyword(s):  
New Species ◽  
Molecular Phylogeny ◽  
Genetic Markers ◽  
28S Rdna ◽  
Mato Grosso ◽  
Phylogenetic Reconstructions ◽  
Parasitological Survey ◽  
Mato Grosso Do Sul ◽  
A New Species

Abstract Raphidascaris (Sprentascaris) andersoni n. sp. (Nematoda: Raphidascarididae) collected in the intestine of the humphead cichlid Gymnogeophagus balzanii (Perugia) from the Pantanal wetlands, State of Mato Grosso do Sul (Brazil) is described and genetically characterized. The new species differs from its congeners mainly by having a conspicuous papilla-like formation slightly anterior to the cloacal aperture. Furthermore, males of R. (S.) lanfrediae and R. (S.) mahnerti have caudal alae, and R. (S.) hypostomi and R. (S.) pimelodi lack lateral alae, whereas in the new species caudal alae are absent and lateral alae present. The remaining congeners, namely, R. (S.) marano and R. (S.) saltaensis differ from Raphidascaris (Sprentascaris) andersoni n. sp. mainly because males have three pairs of postcloacal papillae (vs five pairs). In the phylogenetic reconstructions, using three nuclear genetic markers (18S, ITS1-5.8S-ITS2 and 28S rDNA) and one mitochondrial (cox1 mtDNA), the new species was separated from other representatives of Raphidascarididae, and the absence of monophyly in Hysterothylacium and Raphidascaroides was confirmed. Moreover, the subgenera Sprentascaris and Ichthyascaris appeared to be monophyletic. Therefore, even though Raphidascaris (Raphidascaris) was apparently not monophyletic, the subgenera of Raphidascaris should be re-erected as valid genera. The updated diagnoses of Ichthyascaris, Raphidascaris and Sprentascaris are given. The present study represents the first parasitological survey in G. balzanii.

scholarly journals An overview of recent taxonomic studies on Euphorbiaceae s.l. in Brazil

Rodriguésia ◽  
2012 ◽  
Vol 63 (1) ◽  
pp. 227-242 ◽  
Author(s):  
Ricardo de S. Secco ◽  
Inês Cordeiro ◽  
Luci de Senna-Vale ◽  
Margareth F. de Sales ◽  
Letícia Ribes de Lima ◽  
...  
Keyword(s):  
New Species ◽  
Molecular Phylogeny ◽  
Sensu Stricto ◽  
Classification Systems ◽  
Taxonomic Position ◽  
Diverse Families ◽  
Taxonomic Studies ◽  
The Tropics

The Euphorbiaceae sensu lato are distributed mainly in the tropics, in various types of vegetation and habitats, being one of the largest, most complex and diverse families of angiosperms. It has recently been divided into four families, according to classification systems based on molecular phylogeny: Euphorbiaceae sensu stricto, Phyllanthaceae, Putranjivaceae, and Picrodendraceae. There is a proposition to establish Peraceae still under discussion. There were also changes in the taxonomic position of genera widely distributed in the Brazilian territory, such as Amanoa, Drypetes, Pera, Phyllanthus, Podocalyx, Pogonophora, and Richeria, among others. In addition, new species have been proposed and the limits of taxa distribution are expanding in Brazil. Thus, the authors provide an overview of recent studies and advances in the taxonomy of Euphorbiaceae s.l. in the Northern, Northeastern, Southeastern and Southern regions of Brazil, concentrating on review works and regional floras, as well as the changes that resulted in setting a new taxonomic family.

scholarly journals A revised taxonomy of Asian snail-eating snakes Pareas (Squamata, Pareidae): evidence from morphological comparison and molecular phylogeny

ZooKeys ◽  
2020 ◽  
Vol 939 ◽  
pp. 45-64
Author(s):  
Ping Wang ◽  
Jing Che ◽  
Qin Liu ◽  
Ke Li ◽  
Jie Qiong Jin ◽  
...  
Keyword(s):  
New Species ◽  
Bayesian Inference ◽  
Molecular Phylogeny ◽  
Morphological Data ◽  
Multivariate Morphometrics ◽  
Cryptic Diversity ◽  
Cyt B ◽  
Morphological Comparison ◽  
The Family ◽  
Two New Species

The Asian snail-eating snakes Pareas is the largest genus of the family Pareidae (formerly Pareatidae), and widely distributed in Southeast Asia. However, potential diversity remains poorly explored due to their highly conserved morphology and incomplete samples. Here, on basis of more extensive sampling, interspecific phylogenetic relationships of the genus Pareas were reconstructed using two mitochondrial fragments (cyt b and ND4) and two nuclear genes (c-mos and Rag1), and multivariate morphometrics conducted for external morphological data. Both Bayesian Inference and Maximum Likelihood analyses consistently showed that the genus Pareas was comprised of two distinct, monophyletic lineages with moderate to low support values. Based on evidences from molecular phylogeny and morphological data, cryptic diversity of this genus was uncovered and two new species were described. In additional, the validity of P. macularius is confirmed.

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