Two new Pythium species from southern China based on morphological and molecular characters

Phytotaxa ◽  
2020 ◽  
Vol 432 (3) ◽  
pp. 263-273
Author(s):  
JIA-JIA CHEN ◽  
HUI FENG ◽  
WEI SONG ◽  
XIAO-BO ZHENG
Keyword(s):  
New Species ◽  
Ribosomal Rna ◽  
Southern China ◽  
Phylogenetic Analyses ◽  
Pythium Species ◽  
Internal Transcribed Spacer Region ◽  
Two New Species ◽  
Molecular Phylogenetic ◽  
I Gene ◽  
Molecular Characters

Two new species of Pythium, namely P. subinflatum and P. xuzhouense, from soybean (Glycine max) in southern China are described based on their morphology and molecular phylogenetic analyses inferred from the internal transcribed spacer region of the ribosomal RNA gene and mitochondrial cytochrome c oxidase subunit I gene. Pythium subinflatum is characterized by globose to sub-globose or ovoid hyphal swellings, filamentous inflated sporangia, smooth oogonia, mostly diclinous antheridia, elongated along the oogonial stalk, subcircular, subglobose or fist-shaped antheridial cells, and aplerotic and slightly thick-walled oospores (2–3.5 µm); P. xuzhouense differs from other species in the genus by filamentous or lobulated sporangia, smooth oogonia, mostly diclinous, sometimes monoclinous antheridia, subclavate, falcate or semicircle to subcircular antheridial cells, and plerotic or nearly plerotic and thin-walled oospores (0.5–1.5 µm). In addition, the two new species are compared to closely related Pythium species regarding their phylogenetic positions and morphological features.

Two new species of Barssia from China

Phytotaxa ◽  
2018 ◽  
Vol 374 (2) ◽  
pp. 129
Author(s):  
YU-YAN XU ◽  
LI-JIE GUO ◽  
TING LI ◽  
LI FAN
Keyword(s):  
New Species ◽  
Internal Transcribed Spacer ◽  
North China ◽  
Phylogenetic Analyses ◽  
Large Subunit ◽  
Internal Transcribed Spacer Region ◽  
Two New Species ◽  
Molecular Phylogenetic

Two new truffle species Barssia guozigouensis and B. luyashanensis are described and illustrated from North China based on morphological and molecular evidences. Morphologically, B. guozigouensis is diagnosed by its distinctly warty ascomata and solid gleba with small and irregular chambers, and B. luyashanensis is by its red brown ascomata with fine warts and gleba without chambers. Molecular phylogenetic analyses based on the ribosomal internal transcribed spacer region and 28S large subunit nrDNA supported the placement of the new species.

Pythium cedri sp. nov. (Pythiaceae, Pythiales) from southern China based on morphological and molecular characters

Phytotaxa ◽  
2017 ◽  
Vol 309 (2) ◽  
pp. 135 ◽  
Author(s):  
JIA-JIA CHEN ◽  
LI LÜ ◽  
WEN-WU YE ◽  
YUAN-CHAO WANG ◽  
XIAO-BO ZHENG
Keyword(s):  
New Species ◽  
Slow Growth ◽  
Southern China ◽  
Phylogenetic Analyses ◽  
Morphological Characters ◽  
Cedrus Deodara ◽  
Molecular Phylogenetic ◽  
Coi Sequences ◽  
A New Species ◽  
Molecular Characters

A new species of Pythiales: Pythium cedri, isolated from Cedrus deodara (Pinaceae) in Jiangsu Province of China is described and illustrated based on morphological characters and supported by molecular phylogenetic analyses using ITS+COI sequences. Pythium cedri belongs to Pythium clade D and is characterized by presence of hyphal swellings, toruloid sporangia, ornamented oogonia with blunt spines, monoclinous antheridia, plerotic or nearly plerotic oospores, and relatively slow growth (11–15 mm d–1). A key to accepted species of Pythium clade D is provided.

Phytopythium nanjingense sp. nov. (Pythiaceae, Peronosporales) from southern China based on morphological and molecular characters

Phytotaxa ◽  
2019 ◽  
Vol 403 (3) ◽  
pp. 239
Author(s):  
JIA-JIA CHEN ◽  
HUI FENG ◽  
YUAN-CHAO WANG ◽  
XIAO-BO ZHENG
Keyword(s):  
New Species ◽  
Southern China ◽  
Phylogenetic Analyses ◽  
Morphological Characters ◽  
Similar Species ◽  
Mtdna Sequences ◽  
Molecular Phylogenetic ◽  
Thin Walled ◽  
A New Species ◽  
Molecular Characters

A new species of Peronosporales: Phytopythium nanjingense, isolated from the lake water of Nanjing in Jiangsu Province of China is described and illustrated based on morphological characters and supported by molecular phylogenetic analyses using ITS rDNA and Cox1 and Cox2 mtDNA sequences. Phytopythium nanjingense is heterothallic and characterized by aquatic habitat, ellipsoid, mostly obpyriform to ovoid-obpyriform, internally or internally nested proliferating sporangia with conspicuous apical papillae, smooth oogonia, hypogynous antheridia, filamentous antheridial cells, and plerotic or nearly plerotic and thin-walled oospores (0.5–1.6 µm). Differences between the new species and phylogenetically related and morphologically similar species are discussed.

Xylodon bambusinus and X. xinpingensis spp. nov. (Hymenochaetales) from southern China

Phytotaxa ◽  
2021 ◽  
Vol 511 (3) ◽  
Author(s):  
XIANG MA ◽  
CHANG-LIN ZHAO
Keyword(s):  
New Species ◽  
Bayesian Inference ◽  
Maximum Likelihood ◽  
Growth Habit ◽  
Southern China ◽  
Phylogenetic Analyses ◽  
Molecular Data ◽  
Two New Species ◽  
Thin Walled ◽  
Inference Methods

Two new species, Xylodon bambusinus and X. xinpingensis, are proposed based on morphological and molecular evidences. Both species share the annual growth habit, resupinate basidiomata and monomitic hyphal system with clamped, colorless generative hyphae, smooth, thin-walled basidiospores, but X. bambusinus is characterized by the smooth to tuberculate hymenial surface, presence of capitate and fusiform cystidia, broad ellipsoid basidiospores, while X. xinpingensis by the reticulate hymenophore with cream hymenial surface, and subglobose basidiospores (4.5–6 × 3.5–5 µm). Sequences of ITS and LSU nrRNA gene regions of the studied samples were generated, and phylogenetic analyses were performed with maximum likelihood, maximum parsimony and Bayesian inference methods. The phylogenetic analyses based on molecular data of ITS and ITS+nLSU sequences showed that X. bambusinus was sister to X. subclavatus, while X. xinpingensis grouped with X. astrocystidiatus and X. paradoxus. The nLSU dataset revealed that X. bambusinus grouped with X. asperus and X. brevisetus with lower supports, and that X. xinpingensis grouped with X. astrocystidiatus and X. paradoxus and then with X. rimosissimus without supports. Both morphological and molecular evidences confirmed the placement of two new species in Xylodon. Description and figures from the new species and a key to the known species of Xylodon from China are presented.

scholarly journals Semiaquilegia danxiashanensis (Ranunculaceae), a new species from Danxia Shan in Guangdong, southern China

Phytotaxa ◽  
2019 ◽  
Vol 405 (1) ◽  
pp. 1 ◽  
Author(s):  
JIAN-JUN ZHOU ◽  
ZHANG-PING HUANG ◽  
JIA-HUI LI ◽  
SCOTT HODGES ◽  
WEI-SHENG DENG ◽  
...  
Keyword(s):  
New Species ◽  
Southern China ◽  
Phylogenetic Analyses ◽  
Separate Species ◽  
F Region ◽  
Phylogenetic Studies ◽  
Molecular Phylogenetic ◽  
Nuclear Its ◽  
A New Species ◽  
Northern Guangdong

Based on morphological and molecular phylogenetic studies, Semiaquilegia danxiashanensis, a new species from Danxia Shan in northern Guangdong, southern China, is described and illustrated. This species is easily distinguishable from each of other three known species in the genus by characters of the flowers and fruits. In addition, molecular phylogenetic analyses of both the nuclear ITS and the plastid trnL-F region strongly supported S. danxiashanensis as a separate species from other species of Semiaquilegia. We provide a detailed morphological and habitat description, distribution, as well as colour photographs and illustrations of the new species.

Morphological and molecular evidence for a new species of the genus Panolis Hübner, [1821] (Lepidoptera: Noctuidae)

Zootaxa ◽  
2019 ◽  
Vol 4565 (4) ◽  
pp. 523
Author(s):  
XUAN AN ◽  
MAMORU OWADA ◽  
MIN WANG ◽  
HOU-SHUAI WANG
Keyword(s):  
New Species ◽  
Cytochrome C Oxidase ◽  
Phylogenetic Analyses ◽  
Species Group ◽  
Molecular Evidence ◽  
Mitochondrial Cytochrome ◽  
Molecular Phylogenetic ◽  
Lepidoptera Noctuidae ◽  
A New Species ◽  
I Gene

A new species of the genus Panolis Hübner, [1821], P. xundian sp. nov., is described and illustrated from southwestern China. It is well-defined morphologically by the male genitalia, with a well-developed pollex at the distal terminal of the sacculus and a broad, ventrally concave cucullus, the female corpus bursae with four long signum-stripes. Based on a 658 bp segment of the mitochondrial cytochrome c oxidase subunit I gene, we report the pairwise genetic distance of 2.5% from its allied species P. exquisita Draudt, 1950. Molecular phylogenetic analyses using three genes (2189 bp in total length) indicate that the new species belongs to the P. exquisita species group. 

Two new species of the Phimochirus holthuisi complex from the Gulf of Mexico, supported by morphology, color, and genetics (Crustacea: Anomura: Paguridae)

Zootaxa ◽  
2019 ◽  
Vol 4683 (4) ◽  
pp. 531-551
Author(s):  
DARRYL L. FELDER ◽  
RAFAEL LEMAITRE ◽  
CATHERINE CRAIG
Keyword(s):  
New Species ◽  
Gulf Of Mexico ◽  
Continental Shelf ◽  
Gene Sequence ◽  
Sequence Data ◽  
Phylogenetic Analyses ◽  
The Other ◽  
Two New Species ◽  
Molecular Phylogenetic ◽  
Gene Sequence Data

Coloration, gene-sequence data (H3, 12s, 16s), and subtle features in morphology support the description of two new species, both formerly regarded to represent accepted variants of Phimochirus holthuisi s.l. While color in life consistently separates these species from P. holthuisi s.s. and from each other, morphological distinctions are subtle and less than absolute in small specimens, being based on ventral spine counts of walking leg dactyls and relative development of the superior crest on the major chela. Molecular phylogenetic analyses clearly support the separation of sister clades, representing two new species, from P. holthuisi s.s. as well as other congeners available for analysis. Both of the new species are presently known to occur widely throughout the northern Gulf of Mexico, though one occurs more commonly in the northeastern and southeastern Gulf, and may range as far south as Suriname. The other has been taken primarily in the northwestern Gulf, and is not known from outside Gulf waters. While both of the new species appear restricted to relatively deep subtidal waters of the continental shelf, Phimochirus holthuisi s.s. is instead more commonly found in shallow nearshore tropical waters on or near coral reefs. Previous literature reports of P. holthuisi usually represent, at least in part, one or both of these two new species. 

Morphological and molecular analyses reveal two new species of Guepinia from China

Phytotaxa ◽  
2020 ◽  
Vol 475 (2) ◽  
pp. 91-101
Author(s):  
YANG SHEN ◽  
LI FAN
Keyword(s):  
New Species ◽  
Phylogenetic Analyses ◽  
Northern China ◽  
Molecular Analyses ◽  
Two New Species ◽  
Molecular Phylogenetic ◽  
Reddish Orange

Guepinia alba sp. nov. and G. shanxiense sp. nov. are described and illustrated from Northern China in this paper. Morphologically, G. alba is distinguished from other Guepinia species by whitish basidiomata and 4-spored basidia while G. shanxiense is diagnosed by reddish orange basidiomata and ellipsoid to oblong ellipsoid basidiospores. Molecular phylogenetic analyses based on ITS and nrLSU sequences support the establishment of the two new species.

Gerhardtia sinensis (Agaricales, Lyophyllaceae), a new species and a newly recorded genus for China

Phytotaxa ◽  
2017 ◽  
Vol 332 (2) ◽  
pp. 172 ◽  
Author(s):  
TING LI ◽  
TAIHUI LI ◽  
CHAOQUN WANG ◽  
WANGQIU DENG ◽  
BIN SONG
Keyword(s):  
New Species ◽  
Related Species ◽  
Internal Transcribed Spacer ◽  
Southern China ◽  
Phylogenetic Analyses ◽  
Large Subunit ◽  
Pale Yellow ◽  
Molecular Phylogenetic ◽  
A New Species

Gerhardtia sinensis, as a new species discovered from southern China, is described, illustrated and compared with morphologically similar and phylogenetically related species. Morphologically, it is characterized by its white to yellowish or partially pale yellow pileus with faint striae, subdistant to fairly distant lamellae with intervenose veins, and slightly verruculose basidiospores (4.7–)5.2–6.2(–6.6) × (2.5–)3.0–3.4(–3.8) μm in size. Molecular phylogenetic analyses of the new species and related taxa are performed based on the sequences of nuclear ribosomal large subunit (nrLSU) and nuclear ribosomal internal transcribed spacer (ITS).

scholarly journals Cibaomyces, a new genus of Physalacriaceae from East Asia

Phytotaxa ◽  
2014 ◽  
Vol 162 (4) ◽  
pp. 198 ◽  
Author(s):  
Hao Yan-Jia ◽  
Qin Jiao ◽  
Yang Zhu-Liang
Keyword(s):  
Ribosomal Rna ◽  
New Genus ◽  
Phylogenetic Analyses ◽  
Large Subunit ◽  
Molecular Evidence ◽  
Internal Transcribed Spacer Region ◽  
Line Drawings ◽  
Phylogenetic Placement ◽  
Molecular Phylogenetic ◽  
Thin Walled

A new genus in Physalacriaceae, Cibaomyces, typified by C. glutinis, is described using morphological and molecular evidence. Cibaomyces is morphologically characterized by the combination of the following characters: basidioma small to medium-sized, collybioid to tricholomatoid; pileus viscid; hymenophore sinuate to subdecurrent, relatively distant, with brown lamellar edge; stipe sticky and densely covered with felted squamules; basidiospores thin-walled, ornamented with finger-like projections; cystidia nearly cylindrical, thin-walled, often heavily incrusted. Molecular phylogenetic analyses using DNA nucleotide sequences of the internal transcribed spacer region and the large subunit nuclear ribosomal RNA loci indicated that Cibaomyces was related to Gloiocephala, Laccariopsis and Rhizomarasmius. A description, line drawings, phylogenetic placement and comparison with allied taxa are presented. 

Sign in / Sign up

Export Citation Format

Share Document