Dataset Information

Bandoniozyma gen. nov., a genus of fermentative and non-fermentative tremellaceous yeast species.

ABSTRACT:

Background

Independent surveys across the globe led to the proposal of a new basidiomycetous yeast genus within the Bulleromyces clade of the Tremellales, Bandoniozyma gen. nov., with seven new species.

Methodology/principal findings

The species were characterized by multiple methods, including the analysis of D1/D2 and ITS nucleotide sequences, and morphological and physiological/biochemical traits. Most species can ferment glucose, which is an unusual trait among basidiomycetous yeasts.

Conclusions/significance

In this study we propose the new yeast genus Bandoniozyma, with seven species Bandoniozyma noutii sp. nov. (type species of genus; CBS 8364(T) ?=? DBVPG 4489(T)), Bandoniozyma aquatica sp. nov. (UFMG-DH4.20(T) ?=? CBS 12527(T) ?=? ATCC MYA-4876(T)), Bandoniozyma complexa sp. nov. (CBS 11570(T) ?=? ATCC MYA-4603(T) ?=? MA28a(T)), Bandoniozyma fermentans sp. nov. (CBS 12399(T) ?=? NU7M71(T) ?=? BCRC 23267(T)), Bandoniozyma glucofermentans sp. nov. (CBS 10381(T) ?=? NRRL Y-48076(T) ?=? ATCC MYA-4760(T) ?=? BG 02-7-15-015A-1-1(T)), Bandoniozyma tunnelae sp. nov. (CBS 8024(T) ?=? DBVPG 7000(T)), and Bandoniozyma visegradensis sp. nov. (CBS 12505(T) ?=? NRRL Y-48783(T) ?=? NCAIM Y.01952(T)).

SUBMITTER: Valente P

PROVIDER: S-EPMC3467267 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature

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Publications

Bandoniozyma gen. nov., a genus of fermentative and non-fermentative tremellaceous yeast species.

Valente Patricia P Boekhout Teun T Landell Melissa Fontes MF Crestani Juliana J Pagnocca Fernando Carlos FC Sette Lara Durães LD Passarini Michel Rodrigo Zambrano MR Rosa Carlos Augusto CA Brandão Luciana R LR Pimenta Raphael S RS Ribeiro José Roberto JR Garcia Karina Marques KM Lee Ching-Fu CF Suh Sung-Oui SO Péter Gábor G Dlauchy Dénes D Fell Jack W JW Scorzetti Gloria G Theelen Bart B Vainstein Marilene H MH

PloS one 20121009 10

<h4>Background</h4>Independent surveys across the globe led to the proposal of a new basidiomycetous yeast genus within the Bulleromyces clade of the Tremellales, Bandoniozyma gen. nov., with seven new species.<h4>Methodology/principal findings</h4>The species were characterized by multiple methods, including the analysis of D1/D2 and ITS nucleotide sequences, and morphological and physiological/biochemical traits. Most species can ferment glucose, which is an unusual trait among basidiomycetous ...[more]

PMID: 23056233

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Project description:An intracellular bacterium, strain IAST, was observed to infect several species of the plant-parasitic nematode genus Xiphinema (Xiphinema astaregiense, Xiphinema incertum, Xiphinema madeirense, Xiphinema pachtaicum, Xiphinema parapachydermum and Xiphinema vallense). The bacterium could not be recovered on axenic medium. The 16S rRNA gene sequence of IAST was found to be new, being related to the family Burkholderiaceae, class Betaproteobacteria. Fungal endosymbionts Mycoavidus cysteinexigens B1-EBT (92.9 % sequence identity) and 'Candidatus Glomeribacter gigasporarum' BEG34 (89.8 % identity) are the closest taxa and form a separate phylogenetic clade inside Burkholderiaceae. Other genes (atpD, lepA and recA) also separated this species from its closest relatives using a multilocus sequence analysis approach. These genes were obtained using a partial genome of this bacterium. The localization of the bacterium (via light and fluorescence in situ hybridization microscopy) is in the X. pachtaicum females clustered around the developing oocytes, primarily found embedded inside the epithelial wall cells of the ovaries, from where they are dispersed in the intestine. Transmission electron microscopy (TEM) observations supported the presence of bacteria inside the nematode body, where they occupy ovaries and occur inside the intestinal epithelium. Ultrastructural analysis of the bacterium showed cells that appear as mostly irregular, slightly curved rods with rounded ends, 0.8-1.2 µm wide and 2.5-6.0 µm long, possessing a typical Gram-negative cell wall. The peptidoglycan layer is, however, evident only occasionally and not detectable by TEM in most cells. Another irregularly occurring shell surrounding the endosymbiont cells or the cell clusters was also revealed, probably originating from the host cell membrane. Flagella or spore-like cells do not occur and the nucleoid is diffusely distributed throughout the cell. This endosymbiont is transmitted vertically through nematode generations. These results support the proposal of IAST as a new species, although its obligate intracellular and obligate endosymbiont nature prevented isolation of a definitive type strain. Strain IAST is therefore proposed as representing 'Candidatus Xiphinematincola pachtaicus' gen. nov., sp. nov.

Dataset Information

Bandoniozyma gen. nov., a genus of fermentative and non-fermentative tremellaceous yeast species.

Background

Methodology/principal findings

Conclusions/significance

Publications

Bandoniozyma gen. nov., a genus of fermentative and non-fermentative tremellaceous yeast species.

Similar Datasets

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