Remersonia, a new genus for Stilbella thermophila, a thermophilic mould from compost

1997 ◽  
Vol 75 (7) ◽  
pp. 1158-1165 ◽  
Author(s):  
Keith A. Seifert ◽  
Gerry Louis-Seize ◽  
Robert A. Samson ◽  
Teun Boekhout
Keyword(s):  
Ribosomal Dna ◽  
Dna Sequences ◽  
New Genus ◽  
Cladistic Analysis ◽  
Thermophilic Fungi ◽  
Sequencing Data ◽  
Mushroom Compost ◽  
Supplementary Material ◽  
28S Ribosomal Dna ◽  
Partial 18S

The thermophilic synnematous hyphomycete Stilbella thermophila is redescribed and illustrated based on the study of type and supplementary material. The species is transferred to a new anamorph genus, Remersonia, characterized by determinate synnemata with scarcely branched conidiophores, percurrently proliferating conidiogenous cells, relatively large ameroconidia that accumulate in slime, and thermotolerant growth. Cladistic analysis of partial 18S and 28S ribosomal DNA sequences suggest that the fungus is a member of the Sordariales. Septal ultrastructure and a failure to grow on benomyl-emended media support the ascomycetous affinities of the fungus. Failure to grow on cycloheximide-emended media supports sequencing data suggesting that the species is not allied with the Ophiostomatales. The biology of the fungus is briefly discussed. Key words: thermophilic fungi, mushroom compost, hyphomycetes, systematics, 18S rDNA, 28S rDNA.

Coltriciella multipileata (Agaricomycetes, Hymenochaetaceae), a new species from Mexico, related to ectomycorrhizal lineages  

Phytotaxa ◽  
2020 ◽  
Vol 475 (2) ◽  
pp. 79-90
Author(s):  
RICARDO VALENZUELA ◽  
TANIA RAYMUNDO ◽  
CONY DECOCK ◽  
MA BLANCA NIEVES LARA-CHÁVEZ ◽  
ISOLDA LUNA-VEGA ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Ribosomal Dna ◽  
Dna Sequences ◽  
Preliminary Analysis ◽  
Sister Group ◽  
High Rate ◽  
Pinus Patula ◽  
A New Species ◽  
28S Ribosomal Dna

Coltriciella multipileata is described here as a new species from Mexico. The species grow on soils in open areas at the vicinity of living trees of Pinus patula, and its known only from the Parque Recreativo Los Colomos, Jalisco. The phylogenetic analysis based on partial nuclear 28S ribosomal DNA sequences, recovered Coltriciella multipileata as sister group with a specimen reported as ectomycorrhizal, and closely related with other two species that are considered saprophitic. According with our preliminary analysis of character states reconstruction, the ectomycorrhizal condition appeared early in the Coltriciella clade, with a high rate of transitions between ectomycorrhizal and saprophitic conditions. A key for species similar to Coltriciella multipileata is presented.

scholarly journals PCR Primers for Metazoan Nuclear 18S and 28S Ribosomal DNA Sequences

PLoS ONE ◽  
2012 ◽  
Vol 7 (9) ◽  
pp. e46180 ◽  
Author(s):  
Ryuji J. Machida ◽  
Nancy Knowlton
Keyword(s):  
Ribosomal Dna ◽  
Dna Sequences ◽  
Pcr Primers ◽  
28S Ribosomal Dna

Phylogenetic position of type X larva (suborder Spirurina) inferred from partial 18S ribosomal DNA sequences

1998 ◽  
Vol 47 ◽  
pp. 291
Author(s):  
K Ando ◽  
Y Kikuta ◽  
T Okada ◽  
R Hosami ◽  
Y Chinzei ◽  
...  
Keyword(s):  
Ribosomal Dna ◽  
Dna Sequences ◽  
Phylogenetic Position ◽  
Partial 18S

scholarly journals Origin, Behaviour, and Transmission of B Chromosome with Special Reference to Plantago lagopus

Genes ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 152 ◽  
Author(s):  
Manoj Dhar ◽  
Jasmeet Kour ◽  
Sanjana Kaul
Keyword(s):  
Ribosomal Dna ◽  
Dna Sequences ◽  
B Chromosome ◽  
Repetitive Elements ◽  
B Chromosomes ◽  
Current Status ◽  
Sequencing Data ◽  
Molecular Cytogenetic Techniques ◽  
Plantago Lagopus ◽  
Eukaryotic Organisms

B chromosomes have been reported in many eukaryotic organisms. These chromosomes occur in addition to the standard complement of a species. Bs do not pair with any of the A chromosomes and they have generally been considered to be non-essential and genetically inert. However, due to tremendous advancements in the technologies, the molecular composition of B chromosomes has been determined. The sequencing data has revealed that B chromosomes have originated from A chromosomes and they are rich in repetitive elements. In our laboratory, a novel B chromosome was discovered in Plantago lagopus. Using molecular cytogenetic techniques, the B chromosome was found to be composed of ribosomal DNA sequences. However, further characterization of the chromosome using next generation sequencing (NGS) etc. revealed that the B chromosome is a mosaic of sequences derived from A chromosomes, 5S ribosomal DNA (rDNA), 45S rDNA, and various types of repetitive elements. The transmission of B chromosome through the female sex track did not follow the Mendelian principles. The chromosome was found to have drive due to which it was perpetuating in populations. The present paper attempts to summarize the information on nature, transmission, and origin of B chromosomes, particularly the current status of our knowledge in P. lagopus.

The Stresiptera Problem: Phylogeny of the Holometabolous Insect Orders Inferred from 18S and 28S Ribosomal DNA Sequences and Morphology

1997 ◽  
Vol 46 (1) ◽  
pp. 1 ◽  
Author(s):  
Michael F. Whiting ◽  
James C. Carpenter ◽  
Quentin D. Wheeler ◽  
Ward C. Wheeler
Keyword(s):  
Ribosomal Dna ◽  
Dna Sequences ◽  
Holometabolous Insect ◽  
28S Ribosomal Dna

PHYLOGENY OF HEDYCHIUM AND RELATED GENERA (ZINGIBERACEAE) BASED ON ITS SEQUENCE DATA

2000 ◽  
Vol 57 (2) ◽  
pp. 261-270 ◽  
Author(s):  
T. H. WOOD ◽  
W. M. WHITTEN ◽  
N. H. WILLIAMS
Keyword(s):  
Ribosomal Dna ◽  
Dna Sequences ◽  
Interspecific Hybrid ◽  
Internal Transcribed Spacer ◽  
Sequence Data ◽  
Cladistic Analysis ◽  
Monophyletic Group ◽  
Nuclear Ribosomal Dna ◽  
Its Sequence ◽  
Limited Sample

The phylogeny of Hedychium J. Koenig was estimated using sequence data of internal transcribed spacer regions 1 and 2 (ITS1, ITS2) and 5.8S nuclear ribosomal DNA. Sequences were determined for 29 taxa, one interspecific hybrid of Hedychium and one species in each of 16 other genera of Zingiberaceae representing tribes Hedychieae, Globbeae, Zingibereae and Alpinieae. Cladistic analysis of these data strongly supports the monophyly of Hedychium, but relationships to other genera are poorly supported. Within Hedychium, four major clades are moderately supported. These clades are also distinguishable on the basis of number of flowers per bract and distribution. Stahlianthus, Curcuma, and Hitchenia also form a strongly supported clade. Based on this limited sample, the currently defined tribes of Zingiberoideae are not monophyletic. The Asiatic genera form a monophyletic group within this broadly defined Hedychieae. The taxonomy and biogeography of Hedychium are reviewed.

Phylloporia minuta sp. nov. (Basidiomycota, Hymenochaetales): a remarkable species discovered in a small protected urban area of Atlantic Forest

Phytotaxa ◽  
2018 ◽  
Vol 348 (3) ◽  
pp. 199
Author(s):  
FELIPE BITTENCOURT ◽  
SIDNEY LUIZ STÜRMER ◽  
MATEUS ARDUVINO RECK ◽  
ELISANDRO RICARDO DRECHSLER-SANTOS
Keyword(s):  
Phylogenetic Analysis ◽  
Urban Area ◽  
Atlantic Forest ◽  
Ribosomal Dna ◽  
Dna Sequences ◽  
Protected Area ◽  
Southern Brazil ◽  
Ecological Data ◽  
Black Line ◽  
28S Ribosomal Dna

During fungal surveys in a small urban Protected Area in Southern Brazil a species of Phylloporia was found with its minute basidiomata emerging from living stems of Doliocarpus schottianus. It is characterized by pileate and strikingly small basidiomata, context with a black line separating an upper tomentum, 3–7(–8) pores per mm, a monomitic hyphal system and ellipsoid basidiospores. In phylogenetic analysis based on partial nuclear 28S ribosomal DNA sequences, these specimens are resolved as a new clade within Phylloporia. The species is therefore described as P. minuta sp. nov. Ecological data (host and distribution) and the importance of small and urban protected areas are discussed

Sign in / Sign up

Export Citation Format

Share Document