scholarly journals Two new species of Helicascus (Morosphaeriaceae) from submerged wood in northern Thailand

Phytotaxa ◽  
2016 ◽  
Vol 270 (3) ◽  
pp. 182 ◽  
Author(s):  
ZONG-LONG LUO ◽  
JING YANG ◽  
JIAN-KUI LIU ◽  
HONG-YAN SU ◽  
ALI H. BAHKALI ◽  
...  

Helicascus species from submerged wood in aquatic habitats in northern Thailand were studied based on morphology and analysis of DNA sequence data. Descriptions and illustrations of H. elaterascus and a new species H. chiangraiensis are provided.  H. chiangraiensis is characterized by unilocular ascostromata, fissitunicate asci with a long, narrow and coiled endoascus, ascospores with 2–4 large refractive guttules. The phylogenetic analysis based on combined ITS, LSU and SSU sequence data placed the species in Morosphaeriaceae (Pleosporales).

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.


2019 ◽  
Vol 152 (3) ◽  
pp. 531-538
Author(s):  
Matthieu Jerusalem ◽  
Prudence Yombiyeni ◽  
Gabriel Castillo ◽  
Cony Decock

Background and aims – The aim of this study is the continuation of an ongoing survey of Hymenochaetaceae (Basidiomycota, Hymenochaetales) from the lower Guinean sub-region in Central Africa. In this frame, a new species of Phylloporia is described from Gabon, based on morphological, ecological and phylogenetic data. Methods – The species is described using morphological methods, and ecological data. DNA-based phylogenetic analysis are also used to search for affinities.Key results – A new species of Phylloporia, P. rinoreae, is described based on specimens collected on living twigs of a shrubby Rinorea species (Violaceae), occurring in the Guineo-Congolian rain forest. Phylogenetic inferences using DNA sequence data from partial nuc 28S (region including the D1/D2/D3 domains) resolved this species as a distinct clade within the Phylloporia lineage. An identification key to the species reported from the Guineo-Congolian phytochorion is provided.Conclusion – Phylloporia rinoreae is the seventh species of the genus described from and so far only known from Gabon in the Lower Guinean phytogeographical sub-region.


2009 ◽  
Vol 34 (2) ◽  
pp. 324-329 ◽  
Author(s):  
André M. Amorim ◽  
Renato Goldenberg ◽  
Fabián A. Michelangeli

Physeterostemon thomasii is described from the southern Bahian Atlantic forest of Brazil. It differs from the other two species of the genus by the paleaceous trichomes on young stems and petioles, and by the strongly bullate/foveolate leaves. A phylogenetic analysis with all three species, based on rbcL and ndhF DNA sequence data, showed that Physeterostemon forms a monophyletic group, sister to Eriocnema fulva, and this clade is placed in a polytomy at the base of the tribe Miconieae sensu stricto. However, there is no resolution within Physeterostemon, thus the phylogenetic relationships of the three species cannot be established.


Zootaxa ◽  
2021 ◽  
Vol 4941 (3) ◽  
pp. 369-380
Author(s):  
BRIAN W. BAHDER ◽  
JANIL GORE-FRANCIS ◽  
CHARLES R. BARTLETT

The island of Barbuda was recently surveyed for the presence of Haplaxius crudus to establish the risk of Lethal Yellowing to palms on the island. After extensive collecting, H. crudus was not found on the island. A new species of Patara Westwood was found on coconut palms on the southwest portion of Barbuda. Herein, we describe the new species as Patara cooki sp. n. and provide DNA sequence data for cytochrome c oxidase subunit I (COI) and 18S genes for it and Patara guttata Westwood. Patara cooki differed from Patara guttata sp. n. by 1.8% for 18S and 7.8% for COI, similar to intrageneric differences reported for other taxa. A phylogenetic analysis of available Otiocerinae near Patara using found Patara cooki sp. n. nested among other Patara species. We also offer commentary regarding the interpretation of forewing venation in Patara. 


Zootaxa ◽  
2020 ◽  
Vol 4766 (3) ◽  
pp. 472-484
Author(s):  
HANNAH E. SOM ◽  
L. LEE GRISMER ◽  
PERRY L. JR. WOOD ◽  
EVAN S. H. QUAH ◽  
RAFE M. BROWN ◽  
...  

Liopeltis is a genus of poorly known, infrequently sampled species of colubrid snakes in tropical Asia. We collected a specimen of Liopeltis from Pulau Tioman, Peninsular Malaysia, that superficially resembled L. philippina, a rare species that is endemic to the Palawan Pleistocene Aggregate Island Complex, western Philippines. We analyzed morphological and mitochondrial DNA sequence data from the Pulau Tioman specimen and found distinct differences to L. philippina and all other congeners. On the basis of these corroborated lines of evidence, the Pulau Tioman specimen is described as a new species, L. tiomanica sp. nov. The new species occurs in sympatry with L. tricolor on Pulau Tioman, and our description of L. tiomanica sp. nov. brings the number of endemic amphibians and reptiles on Pulau Tioman to 12. 


Parasitology ◽  
2003 ◽  
Vol 127 (3) ◽  
pp. 265-271 ◽  
Author(s):  
E. C. GRISARD ◽  
N. R. STURM ◽  
D. A. CAMPBELL

Trypanosomes isolated from South American bats include the human pathogen Trypanosoma cruzi. Other Trypanosoma spp. that have been found exclusively in bats are not well characterized at the DNA sequence level and we have therefore used the SL RNA gene to differentiate and characterize kinetoplastids isolated from bats in South America. A Trypanosoma sp. isolated from bats in southern Brazil was compared with the geographically diverse isolates T. cruzi marinkellei, T. vespertilionis, and T. dionisii. Analysis of the SL RNA gene repeats revealed size and sequence variability among these bat trypanosomes. We have developed hybridization probes to separate these bat isolates and have analysed the DNA sequence data to estimate their relatedness. A new species, Trypanosoma desterrensis sp. n., is proposed, for which a 5S rRNA gene was also found within the SL RNA repeat.


Phytotaxa ◽  
2018 ◽  
Vol 362 (2) ◽  
pp. 187 ◽  
Author(s):  
MING-JIE WEI ◽  
HUANG ZHANG ◽  
WEI DONG ◽  
SARANYAPHAT BOONMEE ◽  
DI ZHANG

During our ongoing investigations of freshwater fungi in Thailand, three new chaetosphaeriaceous species, Chloridium aquaticum, Chloridium aseptatum and Dictyochaeta aquatica, were found on submerged wood in freshwater habitats. To determine their placement, a phylogenetic analysis of combined LSU and ITS sequence data was performed. Chloridium aquaticum is the only species having proliferating conidiophores and holoblastic conidiogenous cell in Chloridium. A detailed description and illustrations of the taxa is provided and phylogenetic relationship between the new taxa and their relatives are compared and discussed.


2020 ◽  
Vol 6 (1) ◽  
pp. 1-24
Author(s):  
M. Hernández-Restrepo ◽  
A. Giraldo ◽  
R. van Doorn ◽  
M.J. Wingfield ◽  
J.Z. Groenewald ◽  
...  

The Genera of Fungi series, of which this is the sixth contribution, links type species of fungal genera to their morphology and DNA sequence data. Five genera of microfungi are treated in this study, with new species introduced in Arthrographis, Melnikomyces, and Verruconis. The genus Thysanorea is emended and two new species and nine combinations are proposed. Kramasamuha sibika, the type species of the genus, is provided with DNA sequence data for first time and shown to be a member of Helminthosphaeriaceae (Sordariomycetes). Aureoconidiella is introduced as a new genus representing a new lineage in the Dothideomycetes.


Zootaxa ◽  
2008 ◽  
Vol 1807 (1) ◽  
pp. 26 ◽  
Author(s):  
DAVID S. McLEOD

A new species of the dicroglossine genus Limnonectes from eastern Thailand and its tadpole are described. Analysis of DNA sequence data from 2518 base-pairs of the mitochondrial 12S and 16S gene regions places the species within the complex of frogs currently referred to as Limnonectes kuhlii and demonstrates it to be a separate lineage (>18% sequence divergence from type-material of L. kuhlii from Java). The new species differs from L. kuhlii by having nuptial pads, a greater snout–vent length, and different relative finger lengths than specimens from Java. It has more extensive toe webbing, a different arrangement of nuptial pads, and a greater snout–vent length than Limnonectes laticeps. The new species, which lacks vocal slits, also can be distinguished from the morphologically similar Limnonectes namiyei from Japan, which possesses vocal slits.


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