Article
Microbiology
Zhijun Wang, Ying Zhang, Liu Jiang, Jingjing Qiu, Yanan Gao, Tingting Gu, Zhen Li
Summary: The study revealed that Rhodotorula mucilaginosa resists heavy metal stress by increasing carotenoid production and budding rate. Additionally, carotenoids were found to play a crucial role on the cell surface post lead exposure.
ENVIRONMENTAL MICROBIOLOGY
(2022)
Article
Agricultural Engineering
Ayan Banerjee, T. Vithusha, Bhavya B. Krishna, Jitendra Kumar, Thallada Bhaskar, Debashish Ghosh
Summary: This study evaluated the potential application of deoiled yeast biomass in the pyrolysis process, and found the pyrolysis process to be feasible.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Antonio J. Munoz, Francisco Espinola, Encarnacion Ruiz, Manuel Moya, Eulogio Castro
Summary: The efficiency of Rhodotorula mucilaginosa 1S1 as an Ag(I) biosorbent and its ability to biosynthesize recoverable silver nanoparticles have been evaluated. The process follows pseudo second-order kinetics and the Freundlich model, while optimal operational conditions are determined at 27 degrees C. Thermodynamic analysis shows positive values for enthalpy and entropy, indicating a spontaneous process, and a negative value for Gibbs free energy. The biomass exhibits a maximum biosorption capacity at 19 degrees C, and is capable of synthesizing silver nanoparticles with sizes between 12 nm and 20 nm.
Review
Multidisciplinary Sciences
Zhiheng Li, Chunji Li, Ping Cheng, Guohui Yu
Summary: Rhodotorula mucilaginosa is a biotechnologically important yeast strain with diverse substrate appetites and robust stress resistance. It has great potential for the production of carotenoids, lipids, enzymes, and other functional bioproducts using low-cost agricultural waste materials as substrates.
Article
Green & Sustainable Science & Technology
Siraprapha Siwina, Ratanaporn Leesing
Summary: This study demonstrated the conversion of durian peel into microbial lipid and biodiesel using a newly isolated yeast strain, R. mucilaginosa KKUSY14, without the need for detoxification. The lipid yield from durian peel was high, with fatty acid compositions meeting the requirements for biodiesel fuel properties.
Article
Microbiology
Nur Fazleen Binti Idris, Qianying Jia, He Lu, Yanan Guo, Yang Wang, Rui Hao, Zeng Tu
Summary: The study investigated the impact of inhibiting the production of red pigment on the survival and resistance of the R. mucilaginosa CQMU1 strain. The results showed that pigment production affected the yeast's ability to survive and resist.
CURRENT MICROBIOLOGY
(2023)
Article
Chemistry, Medicinal
Larissa Buedenbender, Abhishek Kumar, Martina Bluemel, Frank Kempken, Deniz Tasdemir
Summary: This study investigated the biosynthetic potential of Rhodotorula mucilaginosa 50-3-19/20B collected from the Mid-Atlantic Ridge, revealing its ability to produce valuable natural products and exhibit anticancer and antimicrobial activities. Genomic and metabolomic tools were used to explore the biosynthesis of glycolipids, providing new insights into the potential applications of these compounds.
Article
Chemistry, Multidisciplinary
Anna Maria Kot, Stanislaw Blazejak, Rita Brzezinska, Wioletta Sek, Marek Kieliszek
Summary: The study found that adding aluminum or aluminum and niacin to the medium can stimulate carotenoid biosynthesis in Rhodotorula mucilaginosa MK1. The synthesis of torulene benefits from the addition of aluminum and barium, while the synthesis of torularhodin benefits from the supplementation of niacin.
APPLIED SCIENCES-BASEL
(2021)
Article
Biochemistry & Molecular Biology
Cuijuan Shi, Hong Zhang, Kai Yu, Yingying Wang, Jie Jiang, Yun Ju, Chuanzhou Zhang, Ziyi Cheng, Guangfeng Kan
Summary: This study first cloned and characterized the MAPK gene (RmMAPK) from Antarctic sea ice yeast R. mucilaginosa, and demonstrated its expression and phosphorylation level changes under low temperature, high salinity, and heavy metal stresses. The results suggest that MAPK cascades may play a key role in response to extreme stresses.
MOLECULAR BIOLOGY REPORTS
(2021)
Article
Biotechnology & Applied Microbiology
Whallans Raphael Couto Machado, Cleidiane Samara Murari, Ana Lucia Ferrarezi Duarte, Vanildo Luiz Del Bianchi
Summary: Simultaneous production of lipids and carotenoids can reduce the high cost of culture medium in industrial production. This study used a combination of sugarcane molasses and cassava wastewater to optimize the production process and successfully obtained higher yields and concentrations of lipids and carotenoids.
BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY
(2022)
Article
Infectious Diseases
Ryuichi Hirano, Tatsuro Mitsuhashi, Katsuyoshi Osanai
Summary: This case report describes a patient with fungemia caused by R. mucilaginosa without central venous catheter implantation, successfully treated with liposomal amphotericin B (L-AMB). Long-term immunosuppressive therapy may have led to bacterial translocation of R. mucilaginosa, highlighting the importance of considering L-AMB treatment.
CASE REPORTS IN INFECTIOUS DISEASES
(2022)
Article
Agriculture, Dairy & Animal Science
Shimaa S. Awaad, Marwa A. Sherief, Sahar M. Mousa, A. Orabi, Ayah B. Abdel-Salam
Summary: This study compared the antifungal effect of chitosan and nano-chitosan as natural preservatives with potassium sorbate against Rhodotorula mucilaginosa and Candida albicans in cheese. The results showed that the combination of chitosan and a low concentration of potassium sorbate had the best antifungal effect. Chitosan nanoparticles significantly reduced fungal count during storage and showed better stability than high molecular weight chitosan. Treated cheese samples had better sensory quality than untreated samples.
Article
Environmental Sciences
F. Z. K. Labbani, S. Dakhmouche, L. Bennamoun, A. Ait-Kaki, T. Nouadri
Summary: Forty-two yeast strains were isolated from natural sources in Algeria, belonging to 8 different species. Six strains demonstrated the ability to produce at least one extracellular enzyme. The cellulase activity was prominent in strains of Aureobasidium pullulans and Vishniacozyma tephrensis, while the highest amylase and protease activity was seen in A. pullulans. V. tephrensis and R. diobovata strains exhibited cellulase and lipase activity for the first time, suggesting their potential for enzyme production.
INTERNATIONAL JOURNAL OF ECOSYSTEMS AND ECOLOGY SCIENCE-IJEES
(2022)
Article
Fisheries
Sebastian Messina-Henriquez, Alvaro Aguirre, Katherina Brokordt, Hector Flores, Marcia Oliva, Peter J. Allen, Claudio A. Alvarez
Summary: The study found that Cojinoba have a strong tolerance to low oxygen levels, but their key physiological functions are significantly affected in hypoxic environments, even though they can still maintain survival to a certain extent.
Article
Environmental Sciences
Carolina Ramirez, Maria Soledad Gutierrez, Lucas Venegas, Catalina Sapag, Carolina Araya, Mario Caruffo, Paulina Lopez, Angelica Reyes-Jara, Magaly Toro, Gerardo Gonzalez-Rocha, Jose Manuel Yanez, Paola Navarrete
Summary: The study investigated the bacterial microbiota composition of Mytilus cultivated near salmonid farms and determined the minimum inhibitory concentration (MIC) to florfenicol and oxytetracycline of its culturable bacteria. Results showed that sampling year affected alpha diversity of Mytilus microbiota, and a negative correlation was found in 2018 between alpha diversity and the tonnes of florfenicol reported. Proximity to salmon farms and sampling year influenced Mytilus microbiota and MIC values of bacterial isolates.
ENVIRONMENTAL RESEARCH
(2022)
Review
Immunology
Alequis Pavon, Diego Riquelme, Victor Jana, Cristian Iribarren, Camila Manzano, Carmen Lopez-Joven, Sebastian Reyes-Cerpa, Paola Navarrete, Leonardo Pavez, Katherine Garcia
Summary: Anthropogenic pollution greatly impacts the water quality of marine ecosystems, particularly heavy metals and antibiotics. Bivalves, as important ecological components, can bioaccumulate pollutants but are also affected by heavy metals and antibiotics, including their microbiome. Antibiotic-resistant bacteria show higher tolerance to heavy metals, possibly through co- and cross-resistance pathways. This review focuses on the co-occurrence of heavy metal and antibiotic resistance in Vibrio spp. and explores the contamination situation in Chile, specifically in the main bivalves-producing region for human consumption, considering the potential transmission of antibiotic resistance genes through the ingestion of contaminated seafood.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2022)
Article
Food Science & Technology
Magaly Toro, Jessica Williams-Vergara, Camila Solar, Ana Maria Quesille-Villalobos, Hee Jin Kwon, Paola Navarrete, Jianghong Meng, Yi Chen, Angelica Reyes-Jara
Summary: Listeria monocytogenes, a major foodborne pathogen, was found in ready-to-eat meals in cafeterias, showing contamination risks from both food and environment. Failures in good manufacturing practices (GMP) at foodservice operations could increase the likelihood of consumer exposure to this pathogen.
Article
Microbiology
Carlos Tejeda, Marcela Villegas, Pamela Steuer, Fernando Ulloa, Esperanza C. Iranzo, Angelica Reyes-Jara, Miguel Salgado
Summary: Copper ions cause significant damage to the DNA integrity of Mycobacterium avium subsp. paratuberculosis (MAP) through their redox states and reactive oxygen species (ROS) generating capacity. This study evaluated the effects of copper ions on MAP DNA integrity and found that the chelator bathocuproine (BCS) and the antioxidant D-mannitol had a significant protective effect, while the chelator EDTA and the antioxidant D-mannitol had a significant positive effect on the viability of the pathogen.
BRAZILIAN JOURNAL OF MICROBIOLOGY
(2023)
Article
Fisheries
Claudio A. Alvarez, Juan F. Alvarado, Matias Farias, Claudia B. Carcamo, Hector Flores, Fanny Guzman, Sebastian San Martin, Juan Varas, Sebastian Messina, Felix Acosta, Nieves Sandoval, Belinda Vega, Paula A. Santana
Summary: This study aimed to investigate the expression and orexigenic ability of C. gilberti ghrelin. The results showed that ghrelin has the highest expression in the stomach and its levels increase before feeding but decrease after. Ghrelin is also localized in the digestive tissues. Overall, the study suggests that C. gilberti ghrelin plays a role in regulating appetite in the Corvina drum. Rating: 7 out of 10.
Article
Microbiology
Samira Reinoso, Maria Soledad Gutierrez, Cristobal Dominguez-Borbor, Wilfrido Arguello-Guevara, Milton Bohorquez-Cruz, Stanislaus Sonnenholzner, Daniela Nova-Baza, Claudia Mardones, Paola Navarrete
Summary: This study evaluated the potential probiotic strains from the intestines of cobia, a tropical fish species. Three yeast strains were selected as potential probiotics based on their protective ability and bioactivity towards cobia larvae.
Article
Fisheries
Jaime Romero, Natalia Catalan, Carolina Ramirez, Claudio D. D. Miranda, Marcia Oliva, Hector Flores, Maria Soledad Romero, Rodrigo Rojas
Summary: This study investigated the diversity, composition and functional prediction of intestinal microbiota in reared Seriolella violacea. The dominant phyla were Firmicutes, Proteobacteria, Fusobacteria, and Tenericutes. The most abundant genus, Candidatus Arthromitus, had been associated with immune response maturation and protection against bacterial infections. Analysis also revealed high levels of genes for sugar metabolism in the intestinal microbiota of S. violacea.
Article
Microbiology
Samira Reinoso, Maria Soledad Gutierrez, Angelica Reyes-Jara, Magaly Toro, Katherine Garcia, Guillermo Reyes, Wilfrido Arguello-Guevara, Milton Bohorquez-Cruz, Stanislaus Sonnenholzner, Paola Navarrete
Summary: The bacterial and fungal communities in the gut of cobia, a tropical fish species, were analyzed in this study. The results showed that the composition and diversity of these communities were not significantly affected by different diets fed to the fish.
Article
Fisheries
Bartolo Concha-Frias, Martha Gabriela Gaxiola-Cortes, Fanny Janet De la Cruz-Alvarado, Luis Daniel Jimenez Martinez, Emyr Saul Pena-Marin, Marcia Angelica Oliva-Arriagada, Joe Luis Arias-Moscoso, Carlos Alfonso Alvarez-Gonzalez
Summary: This study characterized the digestive lipase of the common snook and found its optimal temperature to be 35 degrees C, optimal pH to be 9, and high lipase activity. These findings indicate the importance of lipids in the diet of the common snook.
Article
Biology
L. Vasquez, A. Parra, A. M. Quesille-Villalobos, G. Galvez, P. Navarrete, M. Latorre, M. Toro, M. Gonzalez, A. Reyes-Jara
Summary: Cobalamin biosynthesis is essential for the growth and survival of L. monocytogenes under stress conditions, and the cbiP gene may play a role in the tolerance to low temperature and copper in this bacterium.
BIOLOGICAL RESEARCH
(2022)