Morphological and phylogenetic insights resolve Plenodomus sinensis (Leptosphaeriaceae) as a new species

Phytotaxa ◽  
2017 ◽  
Vol 324 (1) ◽  
pp. 73 ◽  
Author(s):  
DANUSHKA S. TENNAKOON ◽  
RUNGTIWA PHOOKAMSAK ◽  
DHANUSHKA N. WANASINGHE ◽  
JUN-BO YANG ◽  
SAISAMORN LUMYONG ◽  
...  

Plenodomus species were collected from Tamarindus indica L. (Fabaceae) and Plukenetia volubilis L. (Euphorbiaceae) in Yunnan Province, China and subjected to morphological and molecular analysis. Morphologically novel collections comprise unique characters in having mucilaginous globoid-shaped apical and basal appendages (1.5–1.8 μm) and wider third cell from the apex in ascospores. Phylogenetic analysis (Maximum-likelihood, maximum-parsimony and Bayesian analyses) of combined LSU, SSU and ITS sequence data reveal that these collections differ from all other species in the genus. Therefore, a novel species, Plenodomus sinensis is introduced in this study. The new species is compared with other Plenodomus species and a comprehensive description and micrographs are provided.

Phytotaxa ◽  
2016 ◽  
Vol 253 (3) ◽  
pp. 179 ◽  
Author(s):  
DAN ZHU ◽  
ZONG-LONG LUO ◽  
DARBHE JAYARAMA BAHT ◽  
ERIC.H.C. MCKENZIE ◽  
ALI H. BAHKALI ◽  
...  

Helminthosporium species from submerged wood in streams in Yunnan Province, China were studied based on morphology and DNA sequence data. Descriptions and illustrations of Helminthosporium velutinum and a new species H. aquaticum are provided. A combined phylogenetic tree, based on SSU, ITS and LSU sequence data, place the species in Massarinaceae, Pleosporales. The polyphyletic nature of Helminthosporium species within Massarinaceae is shown based on ITS sequence data available in GenBank.


Phytotaxa ◽  
2016 ◽  
Vol 280 (2) ◽  
pp. 116 ◽  
Author(s):  
HUILI LI ◽  
XUELAN MA ◽  
PETER E. MORTIMER ◽  
SAMANTHA C. KARUNARATHNA ◽  
JIANCHU XU ◽  
...  

Four specimens of Phallus were collected during surveys in a Pinus armandii forest in Baoshan, Yunnan Province, China. Macro- and micro-characteristics, together with Internal Transcribed Spacer (ITS) sequence data, showed that the four specimens belong to a new species, here named Phallus haitangensis. The ITS phylogenetic analyses, morphological descriptions, color photographs, and line drawings are provided, and compared with closely related species in the genus.


Phytotaxa ◽  
2020 ◽  
Vol 428 (3) ◽  
pp. 241-254
Author(s):  
DANUSHKA S. TENNAKOON ◽  
CHANG-HSIN KUO ◽  
KEVIN D. HYDE

In order to establish the phylogenetic relationships and to resolve the natural classification of species in Dothideomycetes, it is necessary to use multi-gene phylogeny as well as morphology. Phaeodothis mori is a new species collected from dead leaves of Morus australis from Chiayi, Taiwan. Maximum parsimony, maximum likelihood and Bayesian analyses were performed based on multi-locus phylogenies of ITS, LSU, SSU and tef1-α to clarify the phylogenetic affinities of the species. Phaeodothis mori is distinguished from the other Phaeodothis species based on distinct size differences in ascomata, asci, ascospores and base pair differences in DNA sequence data. Remarkably, this is the first Phaeodothis species recorded from Morus australis. The new species was compared with the type species of Phaeodothis and a comprehensive description and micrographs were provided.


Plant Disease ◽  
2019 ◽  
Vol 103 (7) ◽  
pp. 1721-1727 ◽  
Author(s):  
Shan Zhong ◽  
Jing Zhang ◽  
Guo-Zhen Zhang

Paris polyphylla is an important perennial medicinal plant in China. A disease similar to gray mold on P. polyphylla occurred at the seedling stage in March 2016 and 2017 in Tengchong city, Yunnan Province of China. The disease resulted in up to 50% mortality in serious cases. Isolates from diseased plants grew 10.6 mm/day at 20°C on PDA. After 21 days, sclerotia were spherical to elliptical (0.4–2.5 × 0.3–1.8 mm). Conidia from diseased tissues were hyaline to pale brown, long, ovoid, unicellular, and measured 15.1–24.5 × 8.8–13.4 μm; conidiophores were 526–1,064 ×12–15 μm. Isolates did not form conidiophores or conidia on PDA or MYA. A phylogenetic analysis based on G3PDH, RPB2, and HSP60 sequence data supported assignment of three representative isolates as a new species of Botrytis. Based on morphological, phylogenetic characteristics and Koch’s Postulates, the causal agent of gray mold on P. polyphylla was identified as a novel species, Botrytis polyphyllae.


Phytotaxa ◽  
2020 ◽  
Vol 428 (2) ◽  
pp. 104-112
Author(s):  
GAJANAN TAMBDE ◽  
MILIND SARDESAI ◽  
ARUN K. PANDEY

A new species, Sida sivarajanii (Malvaceae) from Aurangabad, Maharashtra, India is described. It is morphologically most similar to S. alnifolia and S. rhomboidea but differs in its conical ovary covered with stellate pubescence, 5 styles, 5 dehiscent mericarps and multireticulate spermoderm pattern. The ITS sequence data also confirm the distinctness of the new species. In this study, a comprehensive description, phenology, distribution, habitat and identification key of S. sivarajanii are provided.


Phytotaxa ◽  
2018 ◽  
Vol 369 (4) ◽  
pp. 241 ◽  
Author(s):  
CHUAN-GEN LIN ◽  
ERIC H. C. MCKENZIE ◽  
DARBHE J. BHAT ◽  
JIAN-KUI LIU ◽  
KEVIN D. HYDE ◽  
...  

A new species, Pseudodactylaria brevis, is described, illustrated and compared with other Pseudodactylaria and Dactylaria-like taxa. Evidence for the new species is provided by morphological comparison and sequence data analyses. Pseudodactylaria brevis can be distinguished from other Pseudodactylaria and Dactylaria-like species by its short hyaline conidiophores and fusiform, 1-septate hyaline conidia. Phylogenetic analysis of LSU and ITS sequence data was carried out to determine the phylogenetic placement of the species and confirm the taxonomic status of Pseudodactylariaceae.


Phytotaxa ◽  
2014 ◽  
Vol 186 (1) ◽  
pp. 51 ◽  
Author(s):  
Qiu-Xiang Chen ◽  
Gui-Zhen Chen ◽  
Ming-He Li ◽  
Shi-Pin Chen

In this study, we describe a new orchid species, Goodyera malipoensis, from Yunnan, China. We have performed morphological and molecular analyses on this new species. A detailed comparison between the newly discovered orchid and other members of Goodyera was conducted. The new plant is characterized by having a dense brownish green pubescence on the peduncle. Its ovate-lanceolate petal is unique in Goodyera genus. The hypochile is deeply concave-saccate, and inside there are two papillose rows on each side. These features distinguish the new orchid from all other known species of Goodyera. The molecular study based on nuclear ribosomal ITS sequence data and morphological differences support G. malipoensis as a distinct species.


Phytotaxa ◽  
2018 ◽  
Vol 348 (2) ◽  
pp. 99 ◽  
Author(s):  
SHIKE HUANG ◽  
SAJEEWA S.N. MAHARACHCHIKUMBURA ◽  
RAJESH JEEWON ◽  
D JAYARAMA BHAT ◽  
RUNGTIWA PHOOKAMSAK ◽  
...  

In this paper, we report a new asexual-morph taxon belonging to the family Cordycipitaceae (Hypocreales), which is associated with a sexual morph of an ophioceras-like taxon on submerged wood collected from Baoshan, Yunnan, China. Morphologically, this new taxon is similar to known asexual morphs of Lecanicillium and characterized by conidiophores arising from hyaline hyphae, with gregarious, ellipsoid to ovoid, aseptate conidia. Phylogenetic analyses of a combined LSU, SSU, tef1-α and ITS sequence dataset positions our taxon in Cordycipitaceae and close to Lecanicillium sp. (CBS 639.85) and L. primulinum. Lecanicillium subprimulinum is introduced as a new species with support from molecular data.


Mycotaxon ◽  
2020 ◽  
Vol 135 (4) ◽  
pp. 765-776
Author(s):  
Sana Jabeen ◽  
Arooj Naseer ◽  
Abdul Nasir Khalid

A new species, Russula rubricolor, was collected in the Himalayan forests of Pakistan. This species is morphologically characterized by the yellowish hymenium, bright red pileus that is convex to flat with central depression and finally infundibuliform and striate towards margin, becoming blackish red with age. The newly reported species is placed in Russula subsect. Maculatinae based molecular phylogenetic analysis of ITS sequence data and supported by the red pileus color.


Phytotaxa ◽  
2021 ◽  
Vol 482 (1) ◽  
pp. 14-24
Author(s):  
KUNTHIDA PHUTTHACHAROEN ◽  
K.W. THILINI CHETHANA ◽  
RUNGTIWA PHOOKAMSAK ◽  
ERIC H.C. MCKENZIE ◽  
KEVIN D. HYDE

A new species, Rhexocercosporidium camporesii was collected from dead branches of Scabiosa maritima (Caprifoliaceae) in Forlì-Cesena, Italy. The new species is characterized by a lack of setae surrounding the apothecia and by fusiform, aseptate ascospores containing multiple guttules. Rhexocercosporidium camporesii has larger asci and ascospores than other species of Rhexocercosporidium. Phylogenetic analyses using a combined gene analysis of LSU and ITS sequence data indicated that the new species belongs to Ploettnerulaceae (Helotiales). A detailed morphological description and illustration of the new species are provided.


Sign in / Sign up

Export Citation Format

Share Document