Yeasts

Lachance, Marc‐André; Walker, Graeme M.

doi:10.1002/9780470015902.a0000380.pub3

Cited by 4 publications

(4 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Even for groups that are anthophagous as adults, larvae may feed on fungal substrates (e.g. Epuraea, Aethina, Conotelus Erichson and Cychramus Kugelann: Kirejtshuk, 1994;Lachance et al, 2001). Many species that are frugivorous as larvae and adults may also initially feed on fresh fruit that soon decay due in part to the action abundant associated yeasts, bacteria and fungi.…”

Section: Evolution Of Dietmentioning

confidence: 99%

Evolution of feeding habits of sap beetles (Coleoptera: Nitidulidae) and placement of Calonecrinae

Lee

Leschen

et al. 2020

Systematic Entomology

View full text Add to dashboard Cite

Nitidulidae includes some 4500 species under 350 genera in ten subfamilies, making it the most species‐rich family in Cucujoidea. In this study, we present a phylogeny of the family based on five gene regions (COI, 28s, CAD, H3, Wingless) for 73 ingroup taxa representing nine of the ten currently recognized subfamilies of Nitidulidae, including the enigmatic subfamily Calonecrinae. Our results are consistent with a prior molecular study that recovered (i) paraphyletic Nitidulinae with the inclusion of Meligethinae and Cillaeinae and (ii) subfamilial status of Prometopiinae. The molecular phylogenetic position of Calonecrinae is recovered for the first time, as a sister taxon to Epuraeinae. Ancestral state reconstruction of feeding behaviour indicates that the stem group nitidulids were largely mycophagous with transitions to other feeding types independently derived.

show abstract

Section: Evolution Of Dietmentioning

confidence: 99%

Evolution of feeding habits of sap beetles (Coleoptera: Nitidulidae) and placement of Calonecrinae

Lee

Leschen

et al. 2020

Systematic Entomology

View full text Add to dashboard Cite

show abstract

“…40 These symbiotic yeasts, while feeding on plants, stimulate plant metabolism, and inhibit phytopathogens. 41,42 Insects, which play an important role in pollination and reproduction of plants, feed on yeasts and carry them from the soil to plants and disperse them within plants during pollination. 43 It appears that symbiosis of yeasts with insects and plants is an important and inevitable evolutionary event.…”

Section: Discussionmentioning

confidence: 99%

“…Yeasts with high potential for genotypic 45,46 and phenotypic 47 plasticity are permanent symbiotic inhabitants of plants, 41,42 insects, 48 animals, 49 and humans 50 in a wide range of environments. 37,51 Accordingly, it is not surprising that fungi with these sophisticated properties have evolved to serve as a unique niche for sheltering the endosymbiotic bacteria.…”

Section: Discussionmentioning

confidence: 99%

Sugar-Rich Foods Carry Osmotolerant Yeasts with IntracellularHelicobacter PyloriandStaphylococcusspp

Siavoshi

Sahraee

Heydari

et al. 2020

Middle East J Dig Dis

View full text Add to dashboard Cite

BACKGROUND Sugar-rich foods are of the main components of daily human meals. These foods with high sugar and low water content kill bacteria. However, osmotolerant yeasts survive and multiply. The aim of this study was to examine the occurrence of intracellular Helicobacter pylori(H. pylori) and Staphylococcus spp. in yeast isolates from sugar-rich foods. METHODS Thirty-two yeast isolates from fresh fruits, dried fruits, commercial foods, and miscellaneous foods were identified by the sequencing of amplified products of 26S rDNA. Fluorescence microscopy and LIVE/DEAD bacterial viability kit were used to examine the occurrence of live bacteria inside the yeast’s vacuole. Immunofluorescence assay was used to confirm the identity of intracellular bacteria as H. pylori and Staphylococcus. Polymerase chain reaction (PCR) was used for the detection of 16S rDNA of H. pylori and Staphylococcus in the total DNA of yeasts. RESULTS Yeasts were identified as members of seven genera; Candida, Saccharomyces, Zygosaccharomyces, Pichia, Meyerozyma, Metschnikowia, and Wickerhamomyces. Intravacuolar bacteria were stained green with a bacterial viability kit, revealing that they were alive. Immunofluorescence assay confirmed the identity of intracellular H. pylori and Staphylococcus spp. PCR results revealed that among the 32 isolated yeasts, 53% were H. pylori-positive, 6% were Staphylococcus-positive, 18.7% were positive for both, and 21.8% were negative for both. CONCLUSION Detection of H. pylori- and Staphylococcus-16S rDNA in yeast isolates from dried fruits, and commercial foods showed the occurrence of more than one kind of endosymbiotic bacterium in yeasts’ vacuoles. While the establishment of H. pylori and Staphylococcus in yeast is a sophisticated survival strategy, yeast serves as a potent bacterial reservoir.

show abstract

“…There are very few known phytopathogenic species among the true yeasts in subphylum Saccharomycotina, with a few examples in the genus Eremothecium (Wendland and Walther, 2011). However, there are a large number of phytopathogenic yeast-like fungi with dimorphic lifecycles, for instance in the Ascomycete subphylum Taphrinomycotina and the Basidiomycete subphylum Ustilaginomycotina (Begerow et al, 2017; Lachance and Walker, 2018).…”

Section: Introductionmentioning

confidence: 99%

A Taphrina strain infecting the model plant Arabidopsis thaliana

Christita

Auzane

Wang

et al. 2021

Preprint

View full text Add to dashboard Cite

Yeasts are important plant-associated organisms that can modulate host immunity to either promote or prevent disease. Mechanisms of plant-yeast interactions, specifically of yeast perception by the plant innate immune system, remain unknown. Progress has been hindered by the scarcity of yeast species associated with the model plant Arabidopsis thaliana (Arabidopsis). We have previously isolated Taphrina strain M11 from wild Arabidopsis in the field. Taphrina are poorly studied dimorphic yeast-like fungi that are plant pathogens, often producing plant hormones and causing tumour-like leaf deformation symptoms on their hosts. Here we characterize the interaction of M11 with Arabidopsis. Infection of Arabidopsis with the birch pathogen T. betulina, used as a non-host control, shows early HR, enhanced ROS accumulation, and limitation of growth, demonstrating that Arabidopsis has immunity against non-adapted yeasts. M11 triggered limited cell death, an attenuated ROS response, and grew in planta, as well as subtle but clear leaf deformation symptoms, demonstrating it is pathogenic. Hormone responsive promoter-reporter analysis demonstrated activation of cytokinin signalling during infection. Mutant infection assays indicate jasmonate and ethylene were required for immunity against M11. Analysis of the Taphrina M11 genome was used to mine evidence for yeast specific PAMPs which may underlie host immune responses against yeast-like fungi.

show abstract

Yeasts

Cited by 4 publications

References 33 publications

Evolution of feeding habits of sap beetles (Coleoptera: Nitidulidae) and placement of Calonecrinae

Evolution of feeding habits of sap beetles (Coleoptera: Nitidulidae) and placement of Calonecrinae

Sugar-Rich Foods Carry Osmotolerant Yeasts with IntracellularHelicobacter PyloriandStaphylococcusspp

A Taphrina strain infecting the model plant Arabidopsis thaliana

Contact Info

Product

Resources

About