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José Paulo Sampaio - One of the best experts on this subject based on the ideXlab platform.
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Rhodotorula harrison 1928
The Yeasts (Fifth Edition), 2011Co-Authors: José Paulo SampaioAbstract:Publisher Summary The genus studied in this chapter is Rhodotorula. In the asexual reproduction cells are subglobose, ovoid, ellipsoid, or elongate. Reproduction occurs by multilateral or polar budding. Pseudohyphae or true hyphae may develop. Ballistoconidia are not formed. Some strains synthesize red or yellow pigments. The chapter also discusses physiology/biochemistry and phylogenetic placement of the genus. The type species taken is Rhodotorula glutinis. The key characters of the Rhodotorula species belonging to the class Microbotryomycetes, order Sporidiobolales, are presented. In the systematic discussion of the species, synonyms, growth on 5% malt extract agar, Dalmau plate culture on corn meal agar, gene sequence accession numbers, type strain, cell carbohydrates, origin of the strains studied, systematics, and ecology are determined.
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Rhodotorula psychrophila sp. nov., Rhodotorula psychrophenolica sp. nov. and Rhodotorula glacialis sp. nov., novel psychrophilic basidiomycetous yeast species isolated from alpine environments.
International Journal of Systematic and Evolutionary Microbiology, 2007Co-Authors: Rosa Margesin, Pierre-alain Fonteyne, Franz Schinner, José Paulo SampaioAbstract:Three novel psychrophilic species of the genus Rhodotorula are described. Rhodotorula psychrophila sp. nov. (type strain PB19T=CBS 10440T=DSM 18768T), Rhodotorula psychrophenolica sp. nov. (type strain AG21T=CBS 10438T=DSM 18767T) and Rhodotorula glacialis sp. nov. (type strain A19T=CBS 10436T=DSM 18766T) were isolated from soil collected from an alpine railway area, from mud in the thawing zone of a glacier foot and from glacier cryoconite, respectively. All three species have been assigned to the genus Rhodotorula on the basis of molecular sequence data and physiological and morphological properties. Rhodotorula psychrophila is not able to grow at temperatures above 15 °C. Rhodotorula psychrophenolica and Rhodotorula glacialis degrade high concentrations of phenol (up to 12.5 and 5 mM, respectively) as the sole carbon source at 10 °C. Sequence analyses of the 26S rDNA D1/D2 regions indicated that the novel species are phylogenetically related and belong to a clade that includes other psychrophilic yeasts.
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Rhodotorula psychrophila sp. nov., Rhodotorula psychrophenolica sp. nov. and Rhodotorula glacialis sp. nov., novel psychrophilic basidiomycetous yeast species isolated from alpine environments.
International journal of systematic and evolutionary microbiology, 2007Co-Authors: Rosa Margesin, Pierre-alain Fonteyne, Franz Schinner, José Paulo SampaioAbstract:Three novel psychrophilic species of the genus Rhodotorula are described. Rhodotorula psychrophila sp. nov. (type strain PB19(T)=CBS 10440(T)=DSM 18768(T)), Rhodotorula psychrophenolica sp. nov. (type strain AG21(T)=CBS 10438(T)=DSM 18767(T)) and Rhodotorula glacialis sp. nov. (type strain A19(T)=CBS 10436(T)=DSM 18766(T)) were isolated from soil collected from an alpine railway area, from mud in the thawing zone of a glacier foot and from glacier cryoconite, respectively. All three species have been assigned to the genus Rhodotorula on the basis of molecular sequence data and physiological and morphological properties. Rhodotorula psychrophila is not able to grow at temperatures above 15 degrees C. Rhodotorula psychrophenolica and Rhodotorula glacialis degrade high concentrations of phenol (up to 12.5 and 5 mM, respectively) as the sole carbon source at 10 degrees C. Sequence analyses of the 26S rDNA D1/D2 regions indicated that the novel species are phylogenetically related and belong to a clade that includes other psychrophilic yeasts.
V. N. Ziogas - One of the best experts on this subject based on the ideXlab platform.
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Biodegradation of chlorpyrifos and 3,5,6-trichloro-2-pyridinol by the epiphytic yeasts Rhodotorula glutinis and Rhodotorula rubra
Ecotoxicology, 2018Co-Authors: E. D. Bempelou, J. G. Vontas, Konstantinos S. Liapis, V. N. ZiogasAbstract:Biodegradation of chlorpyrifos by Rhodotorula glutinis and Rhodotorula rubra Biodegradation of TCP by Rhodotorula glutinis and Rhodotorula rubra Triphenyl phosphate inhibited the biodegradation of chlorpyrifos The possible involvement of the epiphytic yeasts Rhodotorula glutinis and Rhodotorula rubra in the biodegradation of the insecticide chlorpyrifos and its metabolite 3,5,6-trichloro-2-pyridinol (TCP), in pure cultures and in plant surfaces (tomato fruits) was investigated. Higher biodegradation rates were observed as the concentration of chlorpyrifos and the inoculum of the microorganisms were increased, while the yeasts proved to be more active at 25 and 15 °C. The presence of glucose in the mineral nutrient medium, as an extra source of carbon, delayed the biodegradation by Rhodotorula glutinis , while Rhodotorula rubra proved to be more active. The detection and quantification of the parent compound and TCP was successfully achieved using a LC/MS/MS chromatographic system. The in vitro enzymatic assays applied suggested that esterases may be involved in the biodegradation of chlorpyrifos, a fact that was further enhanced after the addition of the synergists triphenyl phosphate, diethyl maleate and piperonyl butoxide in the biodegradation trials. The decrease of chlorpyrifos residues on tomato fruits confirmed the corresponding on pure cultures, resulting in the suggestion that the yeasts R. glutinis and R. rubra can possibly be used successfully for the removal or detoxification of chlorpyrifos residues on tomatoes.
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biodegradation of chlorpyrifos and 3 5 6 trichloro 2 pyridinol by the epiphytic yeasts Rhodotorula glutinis and Rhodotorula rubra
Ecotoxicology, 2018Co-Authors: E. D. Bempelou, J. G. Vontas, Konstantinos S. Liapis, V. N. ZiogasAbstract:The possible involvement of the epiphytic yeasts Rhodotorula glutinis and Rhodotorula rubra in the biodegradation of the insecticide chlorpyrifos and its metabolite 3,5,6-trichloro-2-pyridinol (TCP), in pure cultures and in plant surfaces (tomato fruits) was investigated. Higher biodegradation rates were observed as the concentration of chlorpyrifos and the inoculum of the microorganisms were increased, while the yeasts proved to be more active at 25 and 15 °C. The presence of glucose in the mineral nutrient medium, as an extra source of carbon, delayed the biodegradation by Rhodotorula glutinis, while Rhodotorula rubra proved to be more active. The detection and quantification of the parent compound and TCP was successfully achieved using a LC/MS/MS chromatographic system. The in vitro enzymatic assays applied suggested that esterases may be involved in the biodegradation of chlorpyrifos, a fact that was further enhanced after the addition of the synergists triphenyl phosphate, diethyl maleate and piperonyl butoxide in the biodegradation trials. The decrease of chlorpyrifos residues on tomato fruits confirmed the corresponding on pure cultures, resulting in the suggestion that the yeasts R. glutinis and R. rubra can possibly be used successfully for the removal or detoxification of chlorpyrifos residues on tomatoes.
Rosa Margesin - One of the best experts on this subject based on the ideXlab platform.
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Rhodotorula psychrophila sp. nov., Rhodotorula psychrophenolica sp. nov. and Rhodotorula glacialis sp. nov., novel psychrophilic basidiomycetous yeast species isolated from alpine environments.
International Journal of Systematic and Evolutionary Microbiology, 2007Co-Authors: Rosa Margesin, Pierre-alain Fonteyne, Franz Schinner, José Paulo SampaioAbstract:Three novel psychrophilic species of the genus Rhodotorula are described. Rhodotorula psychrophila sp. nov. (type strain PB19T=CBS 10440T=DSM 18768T), Rhodotorula psychrophenolica sp. nov. (type strain AG21T=CBS 10438T=DSM 18767T) and Rhodotorula glacialis sp. nov. (type strain A19T=CBS 10436T=DSM 18766T) were isolated from soil collected from an alpine railway area, from mud in the thawing zone of a glacier foot and from glacier cryoconite, respectively. All three species have been assigned to the genus Rhodotorula on the basis of molecular sequence data and physiological and morphological properties. Rhodotorula psychrophila is not able to grow at temperatures above 15 °C. Rhodotorula psychrophenolica and Rhodotorula glacialis degrade high concentrations of phenol (up to 12.5 and 5 mM, respectively) as the sole carbon source at 10 °C. Sequence analyses of the 26S rDNA D1/D2 regions indicated that the novel species are phylogenetically related and belong to a clade that includes other psychrophilic yeasts.
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Rhodotorula psychrophila sp. nov., Rhodotorula psychrophenolica sp. nov. and Rhodotorula glacialis sp. nov., novel psychrophilic basidiomycetous yeast species isolated from alpine environments.
International journal of systematic and evolutionary microbiology, 2007Co-Authors: Rosa Margesin, Pierre-alain Fonteyne, Franz Schinner, José Paulo SampaioAbstract:Three novel psychrophilic species of the genus Rhodotorula are described. Rhodotorula psychrophila sp. nov. (type strain PB19(T)=CBS 10440(T)=DSM 18768(T)), Rhodotorula psychrophenolica sp. nov. (type strain AG21(T)=CBS 10438(T)=DSM 18767(T)) and Rhodotorula glacialis sp. nov. (type strain A19(T)=CBS 10436(T)=DSM 18766(T)) were isolated from soil collected from an alpine railway area, from mud in the thawing zone of a glacier foot and from glacier cryoconite, respectively. All three species have been assigned to the genus Rhodotorula on the basis of molecular sequence data and physiological and morphological properties. Rhodotorula psychrophila is not able to grow at temperatures above 15 degrees C. Rhodotorula psychrophenolica and Rhodotorula glacialis degrade high concentrations of phenol (up to 12.5 and 5 mM, respectively) as the sole carbon source at 10 degrees C. Sequence analyses of the 26S rDNA D1/D2 regions indicated that the novel species are phylogenetically related and belong to a clade that includes other psychrophilic yeasts.
Luciano Zubaran Goldani - One of the best experts on this subject based on the ideXlab platform.
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Epidemiology of Rhodotorula: An Emerging Pathogen
Interdisciplinary perspectives on infectious diseases, 2012Co-Authors: Fernanda Wirth, Luciano Zubaran GoldaniAbstract:This is an updated paper focusing on the general epidemiological aspects of Rhodotorula in humans, animals, and the environment. Previously considered nonpathogenic, Rhodotorula species have emerged as opportunistic pathogens that have the ability to colonise and infect susceptible patients. Rhodotorula species are ubiquitous saprophytic yeasts that can be recovered from many environmental sources. Several authors describe the isolation of this fungus from different ecosystems, including sites with unfavourable conditions. Compared to R. mucilaginosa, R. glutinis and R. minuta are less frequently isolated from natural environments. Among the few references to the pathogenicity of Rhodotorula spp. in animals, there are several reports of an outbreak of skin infections in chickens and sea animals and lung infections and otitis in sheep and cattle. Most of the cases of infection due to Rhodotorula in humans were fungemia associated with central venous catheter (CVC) use. The most common underlying diseases included solid and haematologic malignancies in patients who were receiving corticosteroids and cytotoxic drugs, the presence of CVC, and the use of broad-spectrum antibiotics. Unlike fungemia, some of the other localised infections caused by Rhodotorula, including meningeal, skin, ocular, peritoneal, and prosthetic joint infections, are not necessarily linked to the use of CVCs or immunosuppression.
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epidemiology and outcome of Rhodotorula fungemia in a tertiary care hospital
Clinical Infectious Diseases, 2006Co-Authors: Luciano Werle Lunardi, Valerio Rodrigues Aquino, Ricardo A Zimerman, Luciano Zubaran GoldaniAbstract:We reviewed demographic data, risk factors, treatment, and outcomes associated with Rhodotorula fungemia in a tertiary care hospital during 2002–2005. Rhodotorula species caused fungemic episodes in 7 patients during the 4-year period that we studied. The most common predisposing factors were patients with hematological and solid malignancy receiving corticosteroids and cytotoxic drugs, the presence of central venous catheters, and the use of broad-spectrum antibiotics. Because of Rhodotorula species’s intrinsic resistance to triazole and echinocandin antifungal agents, patients receiving fluconazole and caspofungin might be susceptible to the development of breakthrough Rhodotorula fungemia. Rhodotorula is a genus of pink-colored yeasts classified in the family Cryptococcaceae [1]. Rhodotorula species are common airborne organisms that may be present on the skin and in sputum, urine, and feces. Rhodotorula species have been implicated as an infrequent cause of infections, such as septicemia, endocarditis, meningitis, and peritonitis [2]. To date, most infections caused by Rhodotorula species have been associated with intravenous catheters and with patients who have solid tumors, lymphoproliferative diseases, chronic renal failure, diabetes, endocarditis, pulmonary diseases, and AIDS [3‐26]. Recent reports of Rhodotorula fungemia have been limited by a relatively small number of subjects. Therefore, we conducted this retrospective study at a tertiary care hospital that covered a 4-year period, to identify the risk factors, treatment, outcome, and other relevant prognostic data associated with Rhodotorula fungemia.
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Epidemiology and Outcome of Rhodotorula Fungemia in a Tertiary Care Hospital
Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2006Co-Authors: Luciano Werle Lunardi, Valerio Rodrigues Aquino, Ricardo A Zimerman, Luciano Zubaran GoldaniAbstract:We reviewed demographic data, risk factors, treatment, and outcomes associated with Rhodotorula fungemia in a tertiary care hospital during 2002-2005. Rhodotorula species caused fungemic episodes in 7 patients during the 4-year period that we studied. The most common predisposing factors were patients with hematological and solid malignancy receiving corticosteroids and cytotoxic drugs, the presence of central venous catheters, and the use of broad-spectrum antibiotics. Because of Rhodotorula species's intrinsic resistance to triazole and echinocandin antifungal agents, patients receiving fluconazole and caspofungin might be susceptible to the development of breakthrough Rhodotorula fungemia.
E. D. Bempelou - One of the best experts on this subject based on the ideXlab platform.
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Biodegradation of chlorpyrifos and 3,5,6-trichloro-2-pyridinol by the epiphytic yeasts Rhodotorula glutinis and Rhodotorula rubra
Ecotoxicology, 2018Co-Authors: E. D. Bempelou, J. G. Vontas, Konstantinos S. Liapis, V. N. ZiogasAbstract:Biodegradation of chlorpyrifos by Rhodotorula glutinis and Rhodotorula rubra Biodegradation of TCP by Rhodotorula glutinis and Rhodotorula rubra Triphenyl phosphate inhibited the biodegradation of chlorpyrifos The possible involvement of the epiphytic yeasts Rhodotorula glutinis and Rhodotorula rubra in the biodegradation of the insecticide chlorpyrifos and its metabolite 3,5,6-trichloro-2-pyridinol (TCP), in pure cultures and in plant surfaces (tomato fruits) was investigated. Higher biodegradation rates were observed as the concentration of chlorpyrifos and the inoculum of the microorganisms were increased, while the yeasts proved to be more active at 25 and 15 °C. The presence of glucose in the mineral nutrient medium, as an extra source of carbon, delayed the biodegradation by Rhodotorula glutinis , while Rhodotorula rubra proved to be more active. The detection and quantification of the parent compound and TCP was successfully achieved using a LC/MS/MS chromatographic system. The in vitro enzymatic assays applied suggested that esterases may be involved in the biodegradation of chlorpyrifos, a fact that was further enhanced after the addition of the synergists triphenyl phosphate, diethyl maleate and piperonyl butoxide in the biodegradation trials. The decrease of chlorpyrifos residues on tomato fruits confirmed the corresponding on pure cultures, resulting in the suggestion that the yeasts R. glutinis and R. rubra can possibly be used successfully for the removal or detoxification of chlorpyrifos residues on tomatoes.
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biodegradation of chlorpyrifos and 3 5 6 trichloro 2 pyridinol by the epiphytic yeasts Rhodotorula glutinis and Rhodotorula rubra
Ecotoxicology, 2018Co-Authors: E. D. Bempelou, J. G. Vontas, Konstantinos S. Liapis, V. N. ZiogasAbstract:The possible involvement of the epiphytic yeasts Rhodotorula glutinis and Rhodotorula rubra in the biodegradation of the insecticide chlorpyrifos and its metabolite 3,5,6-trichloro-2-pyridinol (TCP), in pure cultures and in plant surfaces (tomato fruits) was investigated. Higher biodegradation rates were observed as the concentration of chlorpyrifos and the inoculum of the microorganisms were increased, while the yeasts proved to be more active at 25 and 15 °C. The presence of glucose in the mineral nutrient medium, as an extra source of carbon, delayed the biodegradation by Rhodotorula glutinis, while Rhodotorula rubra proved to be more active. The detection and quantification of the parent compound and TCP was successfully achieved using a LC/MS/MS chromatographic system. The in vitro enzymatic assays applied suggested that esterases may be involved in the biodegradation of chlorpyrifos, a fact that was further enhanced after the addition of the synergists triphenyl phosphate, diethyl maleate and piperonyl butoxide in the biodegradation trials. The decrease of chlorpyrifos residues on tomato fruits confirmed the corresponding on pure cultures, resulting in the suggestion that the yeasts R. glutinis and R. rubra can possibly be used successfully for the removal or detoxification of chlorpyrifos residues on tomatoes.
