scholarly journals Phasmarhabditis zhejiangensis sp. nov. (Nematoda: Rhabditidae), a new rhabditid nematode from Zhejiang, China

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0241413
Author(s):  
Chao-nan Zhang ◽  
Qi-zhi Liu
Keyword(s):  
Internal Transcribed Spacer ◽  
Phylogenetic Analyses ◽  
Nematode Species ◽  
The Body ◽  
Molecular Analyses ◽  
Spicule Length ◽  
Rdna Sequences ◽  
Tail Shape ◽  
28S Rdna Sequences ◽  
A New Species

A new nematode species of the genus Phasmarhabditis was isolated from the body surface of a slug (Philomycus bilineatus Benson, PB). Morphological and molecular analyses confirmed this nematode as a new species. The nematode was named Phasmarhabditis zhejiangensis sp. nov. (Nematoda: Rhabditidae) and is dioecious. In males, the open bursa with genital papillae is characterized by the formula 1-1-1-2-1-3, and the spicule length is 58μm. In female, the vulva is located approximately in the middle of the body. The nematode belongs to papillosa group because of its tail shape pointed with filiform tip. The phasmids are rod-shaped. The posterior anus is slightly swollen. P. zhejiangensis was further characterized by internal transcribed spacer (ITS), 18S rDNA and 28S rDNA sequences. After the sequencing results were compared with sequences available from the National Center for Biotechnology Information (NCBI), the maximum similarities of ITS, 18S and 28S sequences were 89.81%, 96.22% and 95.28%, respectively. Phylogenetic analyses placed Phasmarhabditis zhejiangensis sp. nov. in the genus Phasmarhabditis.

scholarly journals Discovery of a Cryptic Species, Erysiphe Salicina Sp. Nov., and Reconstruction of The Phylogeny of Powdery Mildews On Populus and Salix Spp.

2022 ◽  
Author(s):  
Jing Feng ◽  
Shu-Yan Liu ◽  
Uwe Braun ◽  
Susumu Takamatsu ◽  
Michael Bradshaw ◽  
...  
Keyword(s):  
New Species ◽  
Cryptic Species ◽  
Internal Transcribed Spacer ◽  
Phylogenetic Analyses ◽  
Closely Related Species ◽  
Rdna Sequences ◽  
Powdery Mildews ◽  
Salix Gracilistyla ◽  
28S Rdna Sequences ◽  
Salix Spp

Abstract Recently performed phylogenetic-taxonomic analyses of species belonging to Erysiphe sect. Uncinula on willows (Salix spp.) demonstrated a much higher diversity than previously assumed. Phylogenetic analyses and morphological examinations of Chinese Erysiphe collections on Salix abscondita (= S. raddeana), S. sinica and S. taraikensis, all belonging to Salix subgen. Vetrix sect. Vetrix, revealed an additional cryptic species in sister position to the E. salicis clade, which is described as Erysiphe salicina. The new species clearly distinguished from all allied species in morphological and genetical results. The phylogeny of the new species and closely related species on Populus and Salix spp. (Salicaceae) was reconstructed and discussed using a combined alignment of the internal transcribed spacer (ITS) regions and 28S rDNA sequences. The present phylogenetic analyses suggest that the recently described E. salicicola (on Salix gracilistyla in South Korea) has to be reduced to synonymy with E. salicis var. salicis-gracilistylae (º Uncinula salicis-gracilistylae).

A new species of Galerina (Hymenogastraceae, Agaricales) from northeast China

Phytotaxa ◽  
2021 ◽  
Vol 524 (1) ◽  
pp. 27-36
Author(s):  
XIAOLIANG LIU ◽  
TOLGOR BAU
Keyword(s):  
New Species ◽  
Internal Transcribed Spacer ◽  
Inner Mongolia ◽  
Northeast China ◽  
Phylogenetic Analyses ◽  
Morphological Description ◽  
Rdna Sequences ◽  
Inner Mongolia Autonomous Region ◽  
Internal Transcribed Spacer Rdna ◽  
A New Species

Galerina variibasidia, a new species in the Hymenogastraceae, was discovered in Arxan, Inner Mongolia Autonomous Region, China. This species is presented with morphological description, illustrations, and supported by phylogenetic analyses using Maximum Likelihood and Bayesian Inference analyses with the internal transcribed spacer rDNA sequences.

Plectania lutea (Sarcosomataceae), a new species from southwestern karst areas of China

Phytotaxa ◽  
2021 ◽  
Vol 509 (3) ◽  
Author(s):  
GUANG-FU MOU ◽  
TOLGOR BAU
Keyword(s):  
New Species ◽  
Maximum Likelihood ◽  
Internal Transcribed Spacer ◽  
External Surface ◽  
Phylogenetic Analyses ◽  
Large Subunit ◽  
New Taxon ◽  
Rdna Sequences ◽  
Karst Areas ◽  
A New Species

Plectania lutea, is described as a new species from subtropical karst areas of China. The main distinguishing characteristics of P. lutea are the yellow hymenium, the external surface with ridges, the gelatinous but not semifluid medullary excipulum, and the large finely warted ascospores. The phylogenetic analyses based on internal transcribed spacer (ITS) and the large subunit (LSU) regions of rDNA sequences using Bayesian (BA) and Maximum Likelihood (ML) methods showed that the new taxon can be distinguished from phenotypically similar and phylogenetically related species.

A new species, two new combinations and notes on Fomitopsidaceae (Agaricomycetes, Polyporales)

Phytotaxa ◽  
2017 ◽  
Vol 331 (1) ◽  
pp. 75 ◽  
Author(s):  
ADRIENE MAYRA SOARES ◽  
GEORGEA NOGUEIRA-MELO ◽  
HELIO LONGONI PLAUTZ JR ◽  
TATIANA BAPTISTA GIBERTONI
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Phylogenetic Analyses ◽  
Tropical Species ◽  
Brazilian Atlantic Forest ◽  
New Combinations ◽  
Molecular Analyses ◽  
Rdna Sequences ◽  
A New Species

Rhodofomitopsis roseomagna sp. nov. is described as a new species from the Brazilian Atlantic forest based on morphological and molecular analyses. The species is characterized by the brownish to lilac, pileate basidiomata, round pores (5–6 per mm), and cylindrical to subcylindrical basidiospores (4–5 × 2.0–2.5 μm). Phylogenetic analyses based on combined ITS and nLSU rDNA sequences show that the new species belongs to the recently described genus Rhodofomitopsis. We also propose Rhodofomitopsis flabellata and Fomitopsis bondartsevae as new combinations. Notes on some tropical species of Fomitopsidaceae, description and illustration of the new species, and a key to the species of Rhodofomitopsis reported from the Neotropics are provided.

A new species of Hastospiculum Skrjabin (Spirurida: Diplotriaenidae) parasite of Xenodon merremii (Walger in Spix) (Serpentes: Dipsadidae) from Northeastern Brazil

Zootaxa ◽  
2020 ◽  
Vol 4878 (2) ◽  
pp. 362-374
Author(s):  
CRISTIANA FERREIRA-SILVA ◽  
EDNA P. ALCANTARA ◽  
ROBSON W. ÁVILA ◽  
REINALDO J. SILVA
Keyword(s):  
Nematode Species ◽  
Neotropical Region ◽  
Body Cavity ◽  
The Body ◽  
Northeastern Brazil ◽  
Species List ◽  
Spicule Length ◽  
Dichotomous Key ◽  
Left Spicule ◽  
A New Species

A new nematode species of the Diplotriaenidae is described from the Neotropical region. The species was found infecting the body cavity of the snake Xenodon merremii (Wagler in Spix) collected in the municipality of Barbalha, Ceará State, Northeastern Brazil. Hastospiculum nordestinum n. sp. differs from the congeners by combining the following characters: caudal end ornamented with lateral alae not surrounding the tail end and not connected, supported by eight pairs of pedunculated papillae (three precloacal, one paracloacal, and four postcloacal pairs) and three adcloacal sessile papillae, and left spicule length 719.6–902.4 µm. Besides the description of Hastospiculum nordestinum n. sp., a species list and a dichotomous key to Hastospiculum are provided.

Mucor cheongyangensis, a new species isolated from the surface of Lycorma delicatula in Korea

Phytotaxa ◽  
2020 ◽  
Vol 446 (1) ◽  
pp. 33-42
Author(s):  
THUONG T. T. NGUYEN ◽  
HYANG BURM LEE
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Internal Transcribed Spacer ◽  
Large Subunit ◽  
28S Rdna ◽  
Fungal Taxon ◽  
Rdna Sequences ◽  
Lycorma Delicatula ◽  
28S Rdna Sequences ◽  
A New Species

A new species of Mucor, isolated from the surface of Lycorma delicatula collected at Cheongyang in the Chungnam Province of Korea, is described and compared with morphologically similar taxa. The phylogenetic analysis of the internal transcribed spacer (ITS) and the large subunit (28S) rDNA sequences revealed that this isolate is closely related to M. orantomantidis and M. guilliermondii. However, the new isolate differs from those by having larger sporangia (24.5–125 × 23.5–120 µm), rhizoid-like structures, and production of secondary sporangia from vesicles outside of the original sporangium. Here, this novel fungal taxon is proposed as Mucor cheongyangensis sp. nov.

Heterorhabditis beicherriana n. sp. (Nematoda: Heterorhabditidae), a new entomopathogenic nematode from the Shunyi district of Beijing, China

Zootaxa ◽  
2012 ◽  
Vol 3569 (1) ◽  
pp. 25 ◽  
Author(s):  
LI XING-YUE ◽  
LIU QI-ZHI ◽  
JIŘÍ NERMUŤ ◽  
VLADIMÍR PŮŽA ◽  
ZDENĚK MRÁČEK
Keyword(s):  
Entomopathogenic Nematode ◽  
Phylogenetic Analyses ◽  
The Body ◽  
Similar Species ◽  
Male Body ◽  
Body Width ◽  
Beijing Area ◽  
Spicule Length ◽  
Beijing China ◽  
A New Species

A new heterorhabditid nematode was recovered in orchards in the Beijing area. Morphological and molecular dataconfirmed this nematode as a new species, which belongs to the bacteriophora-group with sister taxa Heterorhabditisbacteriophora and H. georgiana. The nematode was named H. beicherriana n. sp. and is characterized by males,hermaphrodites, females and infective juveniles. In males the peloderan bursa is characterized by the formula 1 2 3 3,spicule length 45 (41–51)μm. Male body length is substantially higher than that of H. bacteriophora and H. georgiana(1028μm vs 820 and 838μm, respectively). In hermaphrodites there are six labial and six cephalic papillae; the vulvalpattern is smooth, rounded or slightly elliptical. Tail is conoid with a moderately prominent post-anal swelling slightlylonger than anal body width. In females vulval lips are non-protruding, tail conical without or with a slightly developedpost-anal swelling, about twice as long as anal body width. In infective juveniles, the body is elongate, slender and straightwhen heat-killed, on average 639μm long, which is longer than in H. bacteriophora (558μm) and H. georgiana (598μm),respectively. Heterorhabditis beicherriana n. sp. is further characterized by internal transcribed spacer (ITS) and D2D3rDNA sequences, the most similar species, H. georgiana, being separated by 21 bp across 994 bp of the ITS and 3 across890 bp of the D2D3 region. ITS and D2D3 regions of H. beicherriana evolved five and one autapomorphies, respectively. Phylogenetic analyses placed H. beicherriana n. sp. as a member of the bacteriophora-group.

scholarly journals Description of a new species of Paraplehnia (Polycladida, Stylochoidea) from Japan, with inference on the phylogenetic position of Plehniidae

ZooKeys ◽  
2019 ◽  
Vol 864 ◽  
pp. 1-13 ◽  
Author(s):  
Yuki Oya ◽  
Taeko Kimura ◽  
Hiroshi Kajihara
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Dna Barcode ◽  
Phylogenetic Position ◽  
Future Studies ◽  
Rdna Sequences ◽  
The Family ◽  
28S Rdna Sequences ◽  
Unidentified Species ◽  
A New Species

We describe a new species of polyclad flatworm, Paraplehniaseisuiaesp. nov., from 298–310 m depths in the Sea of Kumano, West Pacific, Japan. Paraplehniaseisuiaesp. nov. is characterized by i) a developed muscular wall proximally occupying about one-third of the prostatic vesicle, ii) no common duct between the spermiducal bulbs and the prostatic vesicle, and iii) a genital pit between the male and female gonopores. We provide a partial sequence (712 bp) of the mitochondrial cytochrome c oxidase subunit I gene as a DNA barcode for the species. Our phylogenetic analyses based on 603-bp 28S rDNA sequences indicate that P.seisuiaesp. nov. is nested in a clade consisting of stylochoid species along with unidentified species of Stylochus. It suggests that Plehniidae belongs to Stylochoidea, although this should be confirmed by future studies that contain Plehniaarctica (Plehn, 1896), the type species of the type genus of the family. The interfamily relationship among the superfamily Stylochoidea remains poorly resolved.

Redescription and synonymization of Oscheius citri Tabassum, Shahina, Nasira and Erum, 2016 (Rhabditida, Rhabditidae) from India and its taxonomical consequences

2021 ◽  
Vol 95 ◽  
Author(s):  
A. Rana ◽  
A.H. Bhat ◽  
A.K. Chaubey ◽  
V. Půža ◽  
J. Abolafia
Keyword(s):  
Indian Population ◽  
Uttar Pradesh ◽  
Nematode Species ◽  
Molecular Data ◽  
Molecular Characteristics ◽  
Morphometric Characteristics ◽  
High Similarity ◽  
Rdna Sequences ◽  
Indian Strain ◽  
28S Rdna Sequences

Abstract A population of a nematode species belonging to the genus Oscheius was isolated in western Uttar Pradesh, India. Morphological and morphometrical studies on this species showed its high similarity with six species described previously from Pakistan (Oscheius citri, O. cobbi, O. cynodonti, O. esculentus, O. punctatus and O. sacchari). The molecular analysis of the ITS1-5.8S-ITS2 rDNA sequences of the Indian population and the six species described from Pakistan showed that all the sequences are almost identical. Thus, based on morphological and molecular characteristics, all of the six above-mentioned Pakistani species and Indian strain do not differ from each other, hence can be considered synonyms. The correct name for this taxon is the first described species O. citri. Additionally, the phylogenetic analysis of the 18S rDNA and the 28S rDNA sequences showed that Oscheius citri is sister to the clade formed by O. chongmingensis and O. rugaoensis from China. The high similarity of morphological and morphometric characteristics of O. citri and other species, O. maqbooli, O. nadarajani, O. niazii, O. shamimi and O. siddiqii, suggest their conspecificity; however, lack of molecular data for these species does not allow this hypothesis to be tested.

scholarly journals Outbreak of Leaf Spot and Fruit Rot in Florida Strawberry Caused by Neopestalotiopsis spp.

Plant Disease ◽  
2021 ◽  
pp. PDIS-06-20-1290
Author(s):  
Juliana S. Baggio ◽  
Bruna B. Forcelini ◽  
Nan-Yi Wang ◽  
Rafaela G. Ruschel ◽  
James C. Mertely ◽  
...  
Keyword(s):  
Internal Transcribed Spacer ◽  
Phylogenetic Analyses ◽  
Morphological Characteristics ◽  
Taxonomic Status ◽  
Spore Production ◽  
Potato Dextrose Agar ◽  
Fruit Rot ◽  
Low Genetic Diversity ◽  
Pathogenicity Tests ◽  
A New Species

Pestalotiopsis-like species have been reported affecting strawberry worldwide. Recently, severe and unprecedented outbreaks have been reported in Florida commercial fields where leaf, fruit, petiole, crown, and root symptoms were observed, and yield was severely affected. The taxonomic status of the fungus is confusing because it has gone through multiple reclassifications over the years. Morphological characteristics, phylogenetic analyses, and pathogenicity tests were evaluated for strawberry isolates recovered from diseased plants in Florida. Phylogenetic analyses derived from the combined internal transcribed spacer, β-tub, and tef1 regions demonstrated that although there was low genetic diversity among the strawberry isolates, there was a clear separation of the isolates in two groups. The first group included isolates recovered over a period of several years, which was identified as Neopestalotiopsis rosae. Most isolates recovered during the recent outbreaks were genetically different and may belong to a new species. On potato dextrose agar, both groups produced white, circular, and cottony colonies. From the bottom, colonies were white to pale yellow for Neopestalotiopsis sp. and pale luteous to orange for N. rosae. Spores for both groups were five-celled with three median versicolored cells. Mycelial growth and spore production were higher for the new Neopestalotiopsis sp. isolates. Isolates from both groups were pathogenic to strawberry roots and crowns. However, the new Neopestalotiopsis sp. proved more aggressive in fruit and leaf inoculation tests, confirming observations from the recent outbreaks in commercial strawberry fields in Florida.

Sign in / Sign up

Export Citation Format

Share Document