Morphological and ecological similarities: wood-boring beetles associated with novel xylose-fermenting yeasts, Spathaspora passalidarum gen. sp. nov. and Candida jeffriesii sp. nov.

  title={Morphological and ecological similarities: wood-boring beetles associated with novel xylose-fermenting yeasts, Spathaspora passalidarum gen. sp. nov. and Candida jeffriesii sp. nov.},
  author={Nhu H. Nguyen and Sung-Oui Suh and Christopher J. Marshall and Meredith Blackwell},
  journal={Mycological research},
  volume={110 Pt 10},

Scheffersomyces cryptocercus: a new xylose-fermenting yeast associated with the gut of wood roaches and new combinations in the Sugiyamaella yeast clade

The gut of wood-feeding insects is a microhabitat for a specialized community of microbes, including bacteria and several groups of eukaryotes such as nematodes, parabasalids and fungi, and in particular xylose-fermenting and assimilating yeasts have been consistently present in the gut of lignicolous insects.

Spathaspora allomyrinae sp. nov., a d-xylose-fermenting yeast species isolated from a scarabeid beetle Allomyrina dichotoma.

During an investigation of yeasts associated with insects, three strains of a d-xylose-fermenting yeast species were isolated from the gut of the host beetles Allomyrina dichotoma collected on the Baotianman National Nature Reserve, Nanyan, Henan Province, China, it was shown that these new strains represent a phylogenetically distinct species in the Spathaspora clade.

Diversity and Physiological Characterization of D-Xylose-Fermenting Yeasts Isolated from the Brazilian Amazonian Forest

This study demonstrates the promise of using new D-xylose-fermenting yeast strains from the Brazilian Amazonian Forest for ethanol or xylitol production from sugarcane bagasse hemicellulosic hydrolysates.

Scheffersomyces parashehatae f.a., sp. nov., Scheffersomyces xylosifermentans f.a., sp. nov., Candida broadrunensis sp. nov. and Candida manassasensis sp. nov., novel yeasts associated with wood-ingesting insects, and their ecological and biofuel implications.

The multilocus DNA sequence comparisons in this study suggest that the genus Scheffersomyces needs to be circumscribed to the species near S. stipitis (type species) and S. shehatae that can be characterized by the ability to ferment xylose.

Spathaspora boniae sp. nov., a D-xylose-fermenting species in the Candida albicans/Lodderomyces clade.

Two yeast isolates producing asci-containing elongate ascospores with curved ends typical of the genus Spathaspora were isolated from rotting wood samples collected in an Atlantic rainforest ecosystem in Brazil, andylogenetic analysis demonstrated that the strains represent a new species and placed it next to Candida blackwellae, in a clade that also contains Candida albicans and Candida dubliniensis.

Spathaspora piracicabensis f. a., sp. nov., a d-xylose-fermenting yeast species isolated from rotting wood in Brazil

Two strains of a novel yeast species were isolated from rotting wood of an ornamental tree in an Atlantic Rainforest area in Brazil, and analysis of the sequences of the internal transcribed spacer region and the D1/D2 domains of the large subunit rRNA gene showed that this species belongs to the Spathaspora clade, and is phylogenetically related to Spath aspora brasiliensis, Candida materiae and Sp.

Multilocus Phylogenetic Study of the Scheffersomyces Yeast Clade and Characterization of the N-Terminal Region of Xylose Reductase Gene

The molecular characterization of xylose reductase (XR) indicates that the regions surrounding the conserved domain contain mutations that may enhance the performance of the enzyme in X-F yeasts.

Yeasts in the Sugiyamaella clade associated with wood-ingesting beetles and the proposal of Candida bullrunensis sp. nov.

During a survey of yeasts associated with wood-ingesting insects, six strains of the Sugiyamaella clade were isolated from the gut of passalid and tenebrionid beetles and the decayed wood inhabited by them and a novel species closely related to Su.



Wood ingestion by passalid beetles in the presence of xylose‐fermenting gut yeasts

The consistent association of xylose‐fermenting yeasts of almost identical genotypes with passalid beetles across a broad geographical distribution, suggests a significant symbiotic association.

Expansion of the Candida tanzawaensis yeast clade: 16 novel Candida species from basidiocarp-feeding beetles.

A major clade of new yeast taxa from the digestive tract of basidiocarp-feeding beetles is recognized based on rRNA gene sequence analyses and morphological and physiological traits indicated strong host associations.

Kodamaea nitidulidarum, Candida restingae and Kodamaea anthophila, three new related yeast species from ephemeral flowers.

Three new yeast species were discovered during studies of yeasts associated with ephemeral flowers in Brazil, Australia and Hawaii. Their physiological and morphological similarity to Kodamaea

Metschnikowia similis sp. nov. and Metschnikowia colocasiae sp. nov., two ascomycetous yeasts isolated from Conotelus spp. (Coleoptera: Nitiduli- dae) in Costa Rica

We describe two related species of Metschnikowia isolated from Conotelus spp. (Coleoptera: Nitidulidae) of Costa Rican Convolvulacae. Metschnikowia similis sp. nov. is a sister species to

Metschnikowia santaceciliae, Candida hawaiiana, and Candida kipukae, three new yeast species associated with insects of tropical morning glory.

A new haplontic heterothallic species of Metschnikowia and two related asexual yeast species were discovered in morning glory flowers and associated insects, and two of the three species appear to be endemic.

The role of yeasts as insect endosymbionts.

Several interesting symbiotic associations occur between insects and yeasts, and the benefit that accrues for the insect is better understood than the benefit to the yeasts.