Susceptibility of different yeast species to environmental toxic metals

Berdicevsky, Israela; Duek, Lea; Merzbach, D.; Yannai, S.

doi:10.1016/0269-7491(93)90007-b

Cited by 38 publications

(25 citation statements)

References 7 publications

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“…Y11 was resistant and the highest metal uptake value obtained was 19.38 mg/g by boiling treated yeast cells. Candida albicans and C. tropicalis are known for high levels of resistance to the water-soluble ions Hg(II), Pb(II), Cd(II), arsenate (AsO 4 3 ) and selenite (SeO 3 2 ) (Berdicevsky et al, 1993). Many Candida spp.…”

Section: Discussionmentioning

confidence: 99%

Cadmium biosorption by yeast, Candida tropicalis CBL-1, isolated from industrial wastewater

Rehman

Anjum

Hasnain

2010

J. Gen. Appl. Microbiol.

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Section: Discussionmentioning

confidence: 99%

Cadmium biosorption by yeast, Candida tropicalis CBL-1, isolated from industrial wastewater

Rehman

Anjum

Hasnain

2010

J. Gen. Appl. Microbiol.

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“…Hydrocarbon-degrading microorganisms interacting with AMF might provide an important biotechnological tool for bio-and phytoremediation processes. Yeasts are the most abundant fungi in polluted environments (Berdicevsky et al 1993). One of these is Rhodotorula glutinis which was able to grow in a liquid medium containing the PAH phenanthrene without a co-substrate (Romero et al 1998).…”

Section: Introductionmentioning

confidence: 99%

Effect of phenanthrene and Rhodotorula glutinis on arbuscular mycorrhizal fungus colonization of maize roots

Gaspar

et al. 2002

Mycorrhiza

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The effect of the polycyclic aromatic hydrocarbon (PAH) phenanthrene and the yeast Rhodotorula glutinis on the arbuscular mycorrhizal fungus (AMF) Glomus geosporum colonizing maize roots, was studied. During a 90-day experiment, the highest G. geosporum colonization values were found in control plants. Mycorrhiza root length, measured both on the basis of percentage of root colonization and on the activity of succinate dehydrogenase, showed similar patterns in different phenanthrene treatments. The presence of phenanthrene in the substrate reduced G. geosporum intraradical colonization. The presence of R. glutinis did not enhance AMF colonization in the presence of phenanthrene. The biomass of the external mycelium estimated on the basis of the fatty acid 16:1 omega 5 concentration showed a progressive increase through time, and the amounts of this fatty acid differed among treated and untreated substrates. However, this increase was found to be lowest in the phenanthrene and Rhodotorula treatment at 60 days. There was less phenanthrene accumulation in roots of maize inoculated with AMF and the yeast than in roots inoculated only with AMF. A similar pattern was observed in the phenanthrene content of G. geosporum spores collected after 90 days.

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“…In fact, these two Candida spp. are known for high levels of resistance to many water-soluble metal ions, such as Hg 2ϩ , Pb 2ϩ , Cd 2ϩ , arsenate (AsO 4 3Ϫ ), and selenite (SeO 3 2Ϫ ) (3,14,25). Our research group has previously reported that C. tropicalis biofilms are up to 65 times more tolerant and/or resistant to heavy metal toxicity than the corresponding planktonic population (14).…”

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confidence: 99%

Metal Ions May Suppress or Enhance Cellular Differentiation in Candida albicans and Candida tropicalis Biofilms

Harrison

Ceri

Yerly

et al. 2007

Appl Environ Microbiol

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Candida albicans and Candida tropicalis are polymorphic fungi that develop antimicrobial-resistant biofilm communities that are characterized by multiple cell morphotypes. This study investigated cell type interconversion and drug and metal resistance as well as community organization in biofilms of these microorganisms that were exposed to metal ions. To study this, Candida biofilms were grown either in microtiter plates containing gradient arrays of metal ions or in the Calgary Biofilm Device for high-throughput susceptibility testing. Biofilm formation and antifungal resistance were evaluated by viable cell counts, tetrazolium salt reduction, light microscopy, and confocal laser scanning microscopy in conjunction with three-dimensional visualization. We discovered that subinhibitory concentrations of certain metal ions (CrO 4 2؊ , Co 2؉ , Cu 2؉ , Ag ؉ , Zn 2؉ , Cd 2؉ , Hg 2؉ , Pb 2؉ , AsO 2 ؊ , and SeO 3 2؊ ) caused changes in biofilm structure by blocking or eliciting the transition between yeast and hyphal cell types. Four distinct biofilm community structure types were discerned from these data, which were designated "domed," "layer cake," "flat," and "mycelial." This study suggests that Candida biofilm populations may respond to metal ions to form cell-cell and solid-surfaceattached assemblages with distinct patterns of cellular differentiation.

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Susceptibility of different yeast species to environmental toxic metals

Cited by 38 publications

References 7 publications

Cadmium biosorption by yeast, Candida tropicalis CBL-1, isolated from industrial wastewater

Cadmium biosorption by yeast, Candida tropicalis CBL-1, isolated from industrial wastewater

Effect of phenanthrene and Rhodotorula glutinis on arbuscular mycorrhizal fungus colonization of maize roots

Metal Ions May Suppress or Enhance Cellular Differentiation in Candida albicans and Candida tropicalis Biofilms

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