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Karapetyan H, Marutyan S, Muradyan A, Badalyan H, Marutyan SV, Trchounian K. Changes in ATPase activity, antioxidant enzymes and proline biosynthesis in yeast Candida guilliermondii NP-4 under X-irradiation. J Bioenerg Biomembr 2024; 56:141-148. [PMID: 38308068 DOI: 10.1007/s10863-024-10003-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Accepted: 01/24/2024] [Indexed: 02/04/2024]
Abstract
This study investigates the effects of X-radiation on ATPase activity and antioxidant enzyme activity, particularly enzymes involved in proline biosynthesis, in yeast C. guilliermondii NP-4. Moreover, the study examined the post-irradiation repair processes in these cells. Results showed that X-irradiation at a dose of 300 Gy led to an increase in catalase (CAT) and superoxide dismutase (SOD) activity, as well as, an increase in the CAT/SOD ratio in C. guilliermondii NP-4. The repair of radiation-induced damage requires a substantial amount of energy, resulting in an increased demand for ATP in the irradiated and repaired yeasts. Consequently, the total and FoF1-ATPase activity in yeast homogenates and mitochondria increased after X-irradiation and post-irradiation repair. It was showed an increase in the activity of proline biosynthesis enzymes (ornithine transaminase and proline-5-carboxylate reductase) in X-irradiated C. guilliermondii NP-4, which remained elevated even after post-irradiation repair. As a result, the proline levels in X-irradiated and repaired yeasts were higher than those in non-irradiated cells. These findings suggest that proline may have a radioprotective effect on X-irradiated C. guilliermondii NP-4 yeasts. Taken together this study provides insights into the effects of X-radiation on ATPase activity, antioxidant enzyme activity, and proline biosynthesis in C. guilliermondii NP-4 yeast cells, highlighting the potential radioprotective properties of proline in X-irradiated yeasts.
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Affiliation(s)
- Hasmik Karapetyan
- Department of Biochemistry, Microbiology, and Biotechnology, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia
- Research Institute of Biology, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia
| | - Syuzan Marutyan
- Department of Biochemistry, Microbiology, and Biotechnology, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia
- Research Institute of Biology, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia
| | - Anna Muradyan
- Department of Biochemistry, Microbiology, and Biotechnology, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia
| | - Hamlet Badalyan
- Department of General Physics and Astrophysics, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia
| | - Seda V Marutyan
- Department of Biochemistry, Microbiology, and Biotechnology, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia.
| | - Karen Trchounian
- Department of Biochemistry, Microbiology, and Biotechnology, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia.
- Research Institute of Biology, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia.
- Microbial Biotechnologies and Biofuel Innovation Center, Yerevan State University, 1 A. Manoogian, Yerevan, 0025, Armenia.
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2
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Qi Y, Qin Q, Liao G, Tong L, Jin C, Wang B, Fang W. Unveiling the super tolerance of Candida nivariensis to oxidative stress: insights into the involvement of a catalase. Microbiol Spectr 2024; 12:e0316923. [PMID: 38206032 PMCID: PMC10846165 DOI: 10.1128/spectrum.03169-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 11/30/2023] [Indexed: 01/12/2024] Open
Abstract
Yeast cells involved in fermentation processes face various stressors that disrupt redox homeostasis and cause cellular damage, making the study of oxidative stress mechanisms crucial. In this investigation, we isolated a resilient yeast strain, Candida nivariensis GXAS-CN, capable of thriving in the presence of high concentrations of H2O2. Transcriptomic analysis revealed the up-regulation of multiple antioxidant genes in response to oxidative stress. Deletion of the catalase gene Cncat significantly impacted H2O2-induced oxidative stress. Enzymatic analysis of recombinant CnCat highlighted its highly efficient catalase activity and its essential role in mitigating H2O2. Furthermore, over-expression of CnCat in Saccharomyces cerevisiae improved oxidative resistance by reducing intracellular ROS accumulation. The presence of multiple stress-responsive transcription factor binding sites at the promoters of antioxidative genes indicates their regulation by different transcription factors. These findings demonstrate the potential of utilizing the remarkably tolerant C. nivariensis GXAS-CN or enhancing the resistance of S. cerevisiae to improve the efficiency and cost-effectiveness of industrial fermentation processes.IMPORTANCEEnduring oxidative stress is a crucial trait for fermentation strains. The importance of this research is its capacity to advance industrial fermentation processes. Through an in-depth examination of the mechanisms behind the remarkable H2O2 resistance in Candida nivariensis GXAS-CN and the successful genetic manipulation of this strain, we open the door to harnessing the potential of the catalase CnCat for enhancing the oxidative stress resistance and performance of yeast strains. This pioneering achievement creates avenues for fine-tuning yeast strains for precise industrial applications, ultimately leading to more efficient and cost-effective biotechnological processes.
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Affiliation(s)
- Yanhua Qi
- Institute of Biological Science and Technology, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Qijian Qin
- Institute of Biological Science and Technology, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Guiyan Liao
- Institute of Biological Science and Technology, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Lige Tong
- Institute of Biological Science and Technology, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Cheng Jin
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Bin Wang
- Institute of Biological Science and Technology, Guangxi Academy of Sciences, Nanning, Guangxi, China
| | - Wenxia Fang
- Institute of Biological Science and Technology, Guangxi Academy of Sciences, Nanning, Guangxi, China
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3
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Mattos LMM, Hottum HM, Pires DC, Segat BB, Horn A, Fernandes C, Pereira MD. Exploring the antioxidant activity of Fe(III), Mn(III)Mn(II), and Cu(II) compounds in Saccharomyces cerevisiae and Galleria mellonella models of study. FEMS Yeast Res 2024; 24:foad052. [PMID: 38124682 PMCID: PMC10776354 DOI: 10.1093/femsyr/foad052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 11/19/2023] [Accepted: 12/19/2023] [Indexed: 12/23/2023] Open
Abstract
Reactive oxygen species (ROS) are closely related to oxidative stress, aging, and the onset of human diseases. To mitigate ROS-induced damages, extensive research has focused on examining the antioxidative attributes of various synthetic/natural substances. Coordination compounds serving as synthetic antioxidants have emerged as a promising approach to attenuate ROS toxicity. Herein, we investigated the antioxidant potential of a series of Fe(III) (1), Mn(III)Mn(II) (2) and Cu(II) (3) coordination compounds synthesized with the ligand N-(2-hydroxybenzyl)-N-(2-pyridylmethyl)[(3-chloro)(2-hydroxy)]-propylamine in Saccharomyces cerevisiae exposed to oxidative stress. We also assessed the antioxidant potential of these complexes in the alternative model of study, Galleria mellonella. DPPH analysis indicated that these complexes presented moderate antioxidant activity. However, treating Saccharomyces cerevisiae with 1, 2 and 3 increased the tolerance against oxidative stress and extended yeast lifespan. The treatment of yeast cells with these complexes decreased lipid peroxidation and catalase activity in stressed cells, whilst no change in SOD activity was observed. Moreover, these complexes induced the Hsp104 expression. In G. mellonella, complex administration extended larval survival under H2O2 stress and did not affect the insect's life cycle. Our results suggest that the antioxidant potential exhibited by these complexes could be further explored to mitigate various oxidative stress-related disorders.
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Affiliation(s)
- Larissa M M Mattos
- Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, RJ, Brazil
- Rede de Micologia RJ - FAPERJ
| | - Hyan M Hottum
- Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, RJ, Brazil
- Rede de Micologia RJ - FAPERJ
| | - Daniele C Pires
- Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, RJ, Brazil
- Rede de Micologia RJ - FAPERJ
| | - Bruna B Segat
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Adolfo Horn
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Christiane Fernandes
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil
| | - Marcos D Pereira
- Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, RJ, Brazil
- Rede de Micologia RJ - FAPERJ
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4
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Aureli L, Coleine C, Delgado-Baquerizo M, Ahren D, Cemmi A, Di Sarcina I, Onofri S, Selbmann L. Geography and environmental pressure are predictive of class-specific radioresistance in black fungi. Environ Microbiol 2023; 25:2931-2942. [PMID: 37775957 DOI: 10.1111/1462-2920.16510] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 09/13/2023] [Indexed: 10/01/2023]
Abstract
Black fungi are among the most resistant organisms to ionizing radiation on Earth. However, our current knowledge is based on studies on a few isolates, while the overall radioresistance limits across this microbial group and the relationship with local environmental conditions remain largely undetermined. To address this knowledge gap, we assessed the survival of 101 strains of black fungi isolated across a worldwide spatial distribution to gamma radiation doses up to 100 kGy. We found that intra and inter-specific taxonomy, UV radiation, and precipitation levels primarily influence the radioresistance in black fungi. Altogether, this study provides insights into the adaptive mechanisms of black fungi to extreme environments and highlights the role of local adaptation in shaping the survival capabilities of these extreme-tolerant organisms.
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Affiliation(s)
- Lorenzo Aureli
- Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, Italy
- Department of Biology, Lund University, Lund, Sweden
| | - Claudia Coleine
- Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, Italy
| | - Manuel Delgado-Baquerizo
- Unidad Asociada CSIC-UPO (BioFun), Universidad Pablo de Olavide, Sevilla, Spain
- Laboratorio de Biodiversidad y Funcionamiento Ecosistémico, Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS), CSIC, Sevilla, Spain
| | - Dag Ahren
- Department of Biology, Lund University, Lund, Sweden
- Department of Biology, National Bioinformatics Infrastructure Sweden (NBIS), Lund University, Lund, Sweden
| | - Alessia Cemmi
- Fusion and Technology for Nuclear Safety and Security Department, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA FSN-FISS-SNI), Rome, Italy
| | - Ilaria Di Sarcina
- Fusion and Technology for Nuclear Safety and Security Department, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA FSN-FISS-SNI), Rome, Italy
| | - Silvano Onofri
- Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, Italy
| | - Laura Selbmann
- Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, Italy
- Mycological Section, Italian Antarctic National Museum (MNA), Genoa, Italy
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5
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Chen Y, Yang Y, Cai W, Zeng J, Liu N, Wan Y, Fu G. Research progress of anti-environmental factor stress mechanism and anti-stress tolerance way of Saccharomyces cerevisiae during the brewing process. Crit Rev Food Sci Nutr 2023; 63:12308-12323. [PMID: 35848108 DOI: 10.1080/10408398.2022.2101090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Saccharomyces cerevisiae plays a decisive role in the brewing of alcohol products, and the ideal growth and fermentation characteristics can give the pure flavor of alcohol products. However, S. cerevisiae can be affected profoundly by environmental factors during the brewing process, which have negative effects on the growth and fermentation characteristics of S. cerevisiae, and seriously hindered the development of brewing industry. Therefore, we summarized the environmental stress factors (ethanol, organic acids, temperature and osmotic pressure) that affect S. cerevisiae during the brewing process. Their impact mechanisms and the metabolic adaption of S. cerevisiae in response to these stress factors. Of note, S. cerevisiae can increase the ability to resist stress factors by changing the cell membrane components, expressing transcriptional regulatory factors, activating the anti-stress metabolic pathway and enhancing ROS scavenging ability. Meantime, the strategies and methods to improve the stress- tolerant ability of S. cerevisiae during the brewing process were also introduced. Compared with the addition of exogenous anti-stress substances, mutation breeding and protoplast fusion, it appears that adaptive evolution and genetic engineering are able to generate ideal environmental stress tolerance strains of S. cerevisiae and are more in line with the needs of the current brewing industry.
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Affiliation(s)
- Yanru Chen
- State Key Laboratory of Food Science and Technology & College of Food Science and Technology & International Institute of Food Innovation, Nanchang University, Nanchang, PR China
| | - Yili Yang
- China Regional Research Centre, International Centre of Genetic Engineering & Biotechnology, Taizhou, PR China
| | - Wenqin Cai
- State Key Laboratory of Food Science and Technology & College of Food Science and Technology & International Institute of Food Innovation, Nanchang University, Nanchang, PR China
| | - Jiali Zeng
- State Key Laboratory of Food Science and Technology & College of Food Science and Technology & International Institute of Food Innovation, Nanchang University, Nanchang, PR China
| | - Na Liu
- State Key Laboratory of Food Science and Technology & College of Food Science and Technology & International Institute of Food Innovation, Nanchang University, Nanchang, PR China
| | - Yin Wan
- State Key Laboratory of Food Science and Technology & College of Food Science and Technology & International Institute of Food Innovation, Nanchang University, Nanchang, PR China
| | - Guiming Fu
- State Key Laboratory of Food Science and Technology & College of Food Science and Technology & International Institute of Food Innovation, Nanchang University, Nanchang, PR China
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Qiu Y, Lei P, Wang R, Sun L, Luo Z, Li S, Xu H. Kluyveromyces as promising yeast cell factories for industrial bioproduction: From bio-functional design to applications. Biotechnol Adv 2023; 64:108125. [PMID: 36870581 DOI: 10.1016/j.biotechadv.2023.108125] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 02/26/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023]
Abstract
As the two most widely used Kluyveromyces yeast, Kluyveromyces marxianus and K. lactis have gained increasing attention as microbial chassis in biocatalysts, biomanufacturing and the utilization of low-cost raw materials owing to their high suitability to these applications. However, due to slow progress in the development of molecular genetic manipulation tools and synthetic biology strategies, Kluyveromyces yeast cell factories as biological manufacturing platforms have not been fully developed. In this review, we provide a comprehensive overview of the attractive characteristics and applications of Kluyveromyces cell factories, with special emphasis on the development of molecular genetic manipulation tools and systems engineering strategies for synthetic biology. In addition, future avenues in the development of Kluyveromyces cell factories for the utilization of simple carbon compounds as substrates, the dynamic regulation of metabolic pathways, and for rapid directed evolution of robust strains are proposed. We expect that more synthetic systems, synthetic biology tools and metabolic engineering strategies will adapt to and optimize for Kluyveromyces cell factories to achieve green biofabrication of multiple products with higher efficiency.
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Affiliation(s)
- Yibin Qiu
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China; State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, PR China
| | - Peng Lei
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China; State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, PR China
| | - Rui Wang
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China; State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, PR China
| | - Liang Sun
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China; State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, PR China
| | - Zhengshan Luo
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China; State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, PR China
| | - Sha Li
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China; State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, PR China.
| | - Hong Xu
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China; State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, PR China.
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Mukherjee M, Jana CK, Das N. Oxidation of biological molecules with age and induced oxidative stress in different growth phases of Saccharomyces cerevisiae. Antonie Van Leeuwenhoek 2023; 116:353-365. [PMID: 36749507 DOI: 10.1007/s10482-022-01807-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 12/30/2022] [Indexed: 02/08/2023]
Abstract
One of the mechanistic approaches for explaining ageing is the oxidative stress theory of ageing. Saccharomyces cerevisiae has been used as a model to study ageing due to many factors. We have attempted to investigate if the differential ability to withstand oxidative stress can be correlated with their lifespans. In all the four strains studied (AP22, 699, 8C, and SP4), there was no age-associated increases in lipid peroxidation levels measured as thiobarbituric acid reactive substances (TBARS). Under induced oxidative stress conditions, there was an increased TBARS level in both the ages assessed with a quantum-fold increase in the stationary phase cells of AP22. In contrast, the late stationary phase cells of 8C exhibited the least susceptibility to induced oxidative stress. The level of TBARS in both exponential and late stationary phase cells of 699 was overall more than that in the other three strains. Protein carbonylation increased with age in 8C and 699. Induced stress increased carbonylation in the exponential cells of SP4 and 699 and the stationary phase cells of all four strains. Protein carbonylation data indicate that the AP22 cells exhibit decreased protein carbonylation vis-à-vis the other strains. Induced stress data showed that while the exponential cells of 699 are susceptible, the late stationary phase cells of 699 are most resistant. Western blotting analysis using anti-HNE antibodies showed two proteins of molecular mass ~ 56 and ~ 84 kDa that were selectively modified with age in all the strains. Under induced stress conditions, an additional protein of ~ 69 kDa was oxidized. Our investigation shows that the difference in lifespan between the four strains of S. cerevisiae may be regulated by oxidative stress. Knowledge of the identity of the oxidized proteins will significantly facilitate a better understanding of the effect of oxidative stress conditions on the cells of S. cerevisiae.
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Affiliation(s)
- Madhumathan Mukherjee
- Department of Biotechnology, Visva-Bharati University, Santiniketan, West Bengal, 731235, India
- St. Teresa School, Santiniketan, Dist. Birbhum, 731235, India
| | - Chandan Kumar Jana
- Department of Chemistry, Purash-Kanpur Haridas Nandi Mahavidyalaya, P.O. Kanpur, Howrah, West Bengal, 711410, India
| | - Nilanjana Das
- Department of Biotechnology, Visva-Bharati University, Santiniketan, West Bengal, 731235, India.
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Wu Y, Gao Y, Zheng X, Yu T, Yan F. Enhancement of biocontrol efficacy of Kluyveromyces marxianus induced by N-acetylglucosamine against Penicillium expansum. Food Chem 2023; 404:134658. [DOI: 10.1016/j.foodchem.2022.134658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 09/19/2022] [Accepted: 10/15/2022] [Indexed: 11/22/2022]
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Askri H, Akrouti I, Rourou S, Kallèl H. Production, purification, and characterization of recombinant rabies virus glycoprotein expressed in PichiaPink™ yeast. BIOTECHNOLOGY REPORTS 2022; 35:e00736. [PMID: 35646619 PMCID: PMC9130087 DOI: 10.1016/j.btre.2022.e00736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 05/08/2022] [Accepted: 05/11/2022] [Indexed: 11/13/2022]
Abstract
The rabies virus glycoprotein was produced in the Pichia pastoris production strains PichiaPink™ . Different carbon sources were found able to support the RABV-G expression under the control of the constitutive GAP promoter. Culture parameters such as oxygen supply, pH or growth rate can affect the yield and the quality of the produced RABV-G. The purified RABV-G was found correctly glycosylated and able to mediate trimeric oligomerization.
The commonly used host for industrial production of recombinant proteins Pichia pastoris, has been used in this work to produce the rabies virus glycoprotein (RABV-G). To allow a constitutive expression and the secretion of the expressed recombinant RABV-G, the PichiaPink™ commercialized expression vectors were modified to contain the constitutive GAP promoter and the α secretion signal sequences. Recombinant PichiaPink™ strains co-expressing the RABV-G and the protein chaperone PDI, have been then generated and screened for the best producer clone. The influence of seven carbon sources on the expression of the RABV-G, has been studied under different culture conditions in shake flask culture. An incubation temperature of 30°C under an agitation rate of 250 rpm in a filling volume of 10:1 flask/culture volume ratio were the optimal conditions for the RABV-G production in shake flask for all screened carbon sources. A bioreactor Fed batch culture has been then carried using glycerol and glucose as they were good carbon sources for cell growth and RABV-G production in shake flask scale. Cells were grown on glycerol during the batch phase then fed with glycerol or glucose defined solutions, a final RABV-G concentration of 2.7 µg/l was obtained with a specific product yield (YP/X) of 0.032 and 0.06 µg/g(DCW) respectively. The use of semi-defined feeding solution enhanced the production and the YP/X to 12.9 µg/l and 0.135 µg/g(DCW) respectively. However, the high cell density favored by these carbon sources resulted in oxygen limitation which influenced the glycosylation pattern of the secreted RABV-G. Alternatively, the use of sucrose as substrate for RABV-G production in large scale culture, resulted in less biomass production and a YP/X of 0.310 µg/g(DCW) was obtained. A cation exchange chromatography was then used for RABV-G purification as one step method. The purified protein was correctly folded and glycosylated and able to adopt trimeric conformation. The knowledges gained through this work offer a valuable insight into the bioprocess design of RABV-G production in Pichia pastoris to obtain a correctly folded protein which can be used during an immunization proposal for subunit Rabies vaccine development.
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Ai Y, Luo T, Yu Y, Zhou J, Lu H. Downregulation of ammonium uptake improves the growth and tolerance of
Kluyveromyces marxianus
at high temperature. Microbiologyopen 2022; 11:e1290. [PMID: 35765191 PMCID: PMC9131600 DOI: 10.1002/mbo3.1290] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 05/06/2022] [Indexed: 01/18/2023] Open
Abstract
The growth and tolerance of Kluyveromyces marxianus at high temperatures decreased significantly in the synthetic medium (SM), which is commonly used in industrial fermentations. After 100 days of adaptive laboratory evolution, a strain named KM234 exhibited excellent tolerance at a high temperature, without loss of its growth ability at a moderate temperature. Transcriptomic analysis revealed that the KM234 strain decreased the expression of the ammonium (NH4+) transporter gene MEP3 and increased the synthesis of the amino acid carbon backbone, which may contribute greatly to the high‐temperature growth phenotype. High NH4+ content in SM significantly increased the reactive oxygen species (ROS) production at high temperatures and thus caused toxicity to yeast cells. Replacing NH4+ with organic nitrogen sources or increasing the concentration of potassium ions (K+) in the medium restored the growth of the wild‐type K. marxianus at a high temperature in SM. We also showed that the NH4+ toxicity mitigated by K+ might closely depend on the KIN1 gene. Our results provide a practical solution to industrial fermentation under high‐temperature conditions.
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Affiliation(s)
- Yi Ai
- State Key Laboratory of Genetic Engineering, School of Life Sciences Fudan University Shanghai P.R. China
- Shanghai Engineering Research Center of Industrial Microorganisms Fudan University Shanghai P.R. China
| | - Tongyu Luo
- State Key Laboratory of Genetic Engineering, School of Life Sciences Fudan University Shanghai P.R. China
- Shanghai Engineering Research Center of Industrial Microorganisms Fudan University Shanghai P.R. China
| | - Yao Yu
- State Key Laboratory of Genetic Engineering, School of Life Sciences Fudan University Shanghai P.R. China
- Shanghai Engineering Research Center of Industrial Microorganisms Fudan University Shanghai P.R. China
| | - Jungang Zhou
- State Key Laboratory of Genetic Engineering, School of Life Sciences Fudan University Shanghai P.R. China
- Shanghai Engineering Research Center of Industrial Microorganisms Fudan University Shanghai P.R. China
| | - Hong Lu
- State Key Laboratory of Genetic Engineering, School of Life Sciences Fudan University Shanghai P.R. China
- Shanghai Engineering Research Center of Industrial Microorganisms Fudan University Shanghai P.R. China
- Shanghai Collaborative Innovation Center for Biomanufacturing (SCICB) East China University of Science and Technology Shanghai P.R. China
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Enhancement of Biocontrol Efficacy of Pichia kudriavzevii Induced by Ca Ascorbate against Botrytis cinerea in Cherry Tomato Fruit and the Possible Mechanisms of Action. Microbiol Spectr 2021; 9:e0150721. [PMID: 34937188 PMCID: PMC8694134 DOI: 10.1128/spectrum.01507-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
This study investigated the effect of Ca ascorbate on the biocontrol efficacy of Pichia kudriavzevii and the possible mechanisms. The results indicated that the biocontrol activity of P. kudriavzevii was significantly enhanced by 0.15 g L−1 of Ca ascorbate, with higher growth rates of yeast cells in vitro and in vivo. The antioxidant enzyme activity in P. kudriavzevii, including catalase (CAT), superoxide dismutase (SOD), and peroxidase (POD), were improved by Ca ascorbate and reached the maximum at 96 h, 96 h, and 72 h, respectively. The expression of the antioxidant enzyme-related genes CAT1 (8.55-fold) and SOD2 (7.26-fold) peaked at 96 h, while PRXIID (2.8-fold) peaked at 48 h, which were similar to the trends of enzyme activities. Compared with the control, 0.15 g L−1 of Ca ascorbate and CaCl2 increased the activity of succinate dehydrogenase in P. kudriavzevii, thereby enhancing the utilization of nutrients by yeast cells, and calcium ascorbate had the strongest effect. The expressions of HXT5, ADH6, PET100p, and Pga62 were significantly higher in the Ca ascorbate treatment than the other groups, and the CaCl2 treatment was also significantly higher than the control. These results indicated that Ca ascorbate can effectively improve the energy metabolism and cell wall synthesis and slow down the senescence of yeast cells. In general, Ca ascorbate can improve the environmental adaptability of P. kudriavzevii and thus improve the biocontrol effect, which is associated with inducing antioxidant enzymes in yeast cells and enhancing energy metabolism and nutrient utilization efficiency to increase nutrient competition with pathogens. IMPORTANCE Antagonistic yeast is a promising way to control postharvest fruit decay because of its safety and broad-spectrum resistance. However, the biocontrol efficacy of yeast is limited by environmental stress, such as oxidative stress. Therefore, the improvement of antioxidant capacity has become a research hot spot in improving the biocontrol efficacy of yeast. The induction of Ca ascorbate on the antioxidant capacity and physiological activity of yeast was studied. The results showed better induction of antioxidant enzyme and physiological activity in yeast by Ca ascorbate for better antioxidant capacity, and Ca2+ also played a synergistic promotion effect, which improved the biocontrol efficacy. These results provide an approach for the research and application of improving the environmental adaptability and biocontrol effectiveness of yeast.
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Li C, Liu Q, Wang Y, Yang X, Chen S, Zhao Y, Wu Y, Li L. Salt stress improves thermotolerance and high-temperature bioethanol production of multi-stress-tolerant Pichia kudriavzevii by stimulating intracellular metabolism and inhibiting oxidative damage. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:222. [PMID: 34823567 PMCID: PMC8613974 DOI: 10.1186/s13068-021-02071-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 11/10/2021] [Indexed: 05/29/2023]
Abstract
BACKGROUND High-temperature bioethanol production benefits from yeast thermotolerance. Salt stress could induce obvious cross-protection against heat stress of Pichia kudriavzevii, contributing to the improvement of its thermotolerance and bioethanol fermentation. However, the underlying mechanisms of the cross-protection remain poorly understood. RESULTS Salt stress showed obvious cross-protection for thermotolerance and high-temperature ethanol production of P. kudriavzevii observed by biomass, cell morphology and bioethanol production capacity. The biomass and ethanol production of P. kudriavzevii at 45 °C were, respectively, improved by 2.6 and 3.9 times by 300 mmol/L NaCl. Metabolic network map showed that salt stress obviously improved the key enzymes and intermediates in carbohydrate metabolism, contributing to the synthesis of bioethanol, ATP, amino acids, nucleotides, and unsaturated fatty acids, as well as subsequent intracellular metabolisms. The increasing trehalose, glycerol, HSPs, and ergosterol helped maintain the normal function of cell components. Heat stress induced serious oxidative stress that the ROS-positive cell rate and dead cell rate, respectively, rose from 0.5% and 2.4% to 28.2% and 69.2%, with the incubation temperature increasing from 30 to 45 °C. The heat-induced ROS outburst, oxidative damage, and cell death were obviously inhibited by salt stress, especially the dead cell rate which fell to only 20.3% at 300 mmol/L NaCl. The inhibiting oxidative damage mainly resulted from the abundant synthesis of GSH and GST, which, respectively, increased by 4.8 and 76.1 times after addition of 300 mmol/L NaCl. The improved bioethanol production was not only due to the improved thermotolerance, but resulted from the up-regulated alcohol dehydrogenases and down-regulated aldehyde dehydrogenases by salt stress. CONCLUSION The results provide a first insight into the mechanisms of the improved thermotolerance and high-temperature bioethanol production of P. kudriavzevii by salt stress, and provide important information to construct genetic engineering yeasts for high-temperature bioethanol production.
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Affiliation(s)
- Chunsheng Li
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China
- Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang, 222005, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, 116034, China
| | - Qiuying Liu
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China
| | - Yueqi Wang
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China
- Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang, 222005, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, 116034, China
| | - Xianqing Yang
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China.
| | - Shengjun Chen
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China
| | - Yongqiang Zhao
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China
- Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang, 222005, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, 116034, China
| | - Yanyan Wu
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China
| | - Laihao Li
- Key Laboratory of Aquatic Product Processing, Ministry of Agriculture and Rural Affairs, National R&D Center for Aquatic Product Processing, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510300, China
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Pérez G, Lopez-Moya F, Chuina E, Ibañez-Vea M, Garde E, López-Llorca LV, Pisabarro AG, Ramírez L. Strain Degeneration in Pleurotus ostreatus: A Genotype Dependent Oxidative Stress Process Which Triggers Oxidative Stress, Cellular Detoxifying and Cell Wall Reshaping Genes. J Fungi (Basel) 2021; 7:jof7100862. [PMID: 34682283 PMCID: PMC8537115 DOI: 10.3390/jof7100862] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/08/2021] [Accepted: 10/09/2021] [Indexed: 12/13/2022] Open
Abstract
Strain degeneration has been defined as a decrease or loss in the yield of important commercial traits resulting from subsequent culture, which ultimately leads to Reactive Oxygen Species (ROS) production. Pleurotus ostreatus is a lignin-producing nematophagous edible mushroom. Mycelia for mushroom production are usually maintained in subsequent culture in solid media and frequently show symptoms of strain degeneration. The dikaryotic strain P. ostreatus (DkN001) has been used in our lab as a model organism for different purposes. Hence, different tools have been developed to uncover genetic and molecular aspects of this fungus. In this work, strain degeneration was studied in a full-sib monokaryotic progeny of the DkN001 strain with fast (F) and slow (S) growth rates by using different experimental approaches (light microscopy, malondialdehyde levels, whole-genome transcriptome analysis, and chitosan effect on monokaryotic mycelia). The results obtained showed that: (i) strain degeneration in P. ostreatus is linked to oxidative stress, (ii) the oxidative stress response in monokaryons is genotype dependent, (iii) stress and detoxifying genes are highly expressed in S monokaryons with symptoms of strain degeneration, (iv) chitosan addition to F and S monokaryons uncovered the constitutive expression of both oxidative stress and cellular detoxifying genes in S monokaryon strains which suggest their adaptation to oxidative stress, and (v) the overexpression of the cell wall genes, Uap1 and Cda1, in S monokaryons with strain degeneration phenotype indicates cell wall reshaping and the activation of High Osmolarity Glycerol (HOG) and Cell Wall Integrity (CWI) pathways. These results could constitute a hallmark for mushroom producers to distinguish strain degeneration in commercial mushrooms.
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Affiliation(s)
- Gumer Pérez
- Genetics, Genomics and Microbiology Research Group, Institute for Multidisciplinary Research in Applied Biology (IMAB), Public University of Navarre (UPNA), 31006 Pamplona, Spain; (G.P.); (E.C.); (M.I.-V.); (E.G.); (A.G.P.)
| | - Federico Lopez-Moya
- Laboratory of Plant Pathology, Department of Marine Sciences and Applied Biology, University of Alicante, 03690 Alicante, Spain; (F.L.-M.); (L.V.L.-L.)
| | - Emilia Chuina
- Genetics, Genomics and Microbiology Research Group, Institute for Multidisciplinary Research in Applied Biology (IMAB), Public University of Navarre (UPNA), 31006 Pamplona, Spain; (G.P.); (E.C.); (M.I.-V.); (E.G.); (A.G.P.)
| | - María Ibañez-Vea
- Genetics, Genomics and Microbiology Research Group, Institute for Multidisciplinary Research in Applied Biology (IMAB), Public University of Navarre (UPNA), 31006 Pamplona, Spain; (G.P.); (E.C.); (M.I.-V.); (E.G.); (A.G.P.)
| | - Edurne Garde
- Genetics, Genomics and Microbiology Research Group, Institute for Multidisciplinary Research in Applied Biology (IMAB), Public University of Navarre (UPNA), 31006 Pamplona, Spain; (G.P.); (E.C.); (M.I.-V.); (E.G.); (A.G.P.)
| | - Luis V. López-Llorca
- Laboratory of Plant Pathology, Department of Marine Sciences and Applied Biology, University of Alicante, 03690 Alicante, Spain; (F.L.-M.); (L.V.L.-L.)
| | - Antonio G. Pisabarro
- Genetics, Genomics and Microbiology Research Group, Institute for Multidisciplinary Research in Applied Biology (IMAB), Public University of Navarre (UPNA), 31006 Pamplona, Spain; (G.P.); (E.C.); (M.I.-V.); (E.G.); (A.G.P.)
| | - Lucía Ramírez
- Genetics, Genomics and Microbiology Research Group, Institute for Multidisciplinary Research in Applied Biology (IMAB), Public University of Navarre (UPNA), 31006 Pamplona, Spain; (G.P.); (E.C.); (M.I.-V.); (E.G.); (A.G.P.)
- Correspondence:
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Gómez-Márquez C, Sandoval-Nuñez D, Gschaedler A, Romero-Gutiérrez T, Amaya-Delgado L, Morales JA. Diploid genome assembly of Kluyveromyces marxianus NRRL Y-50883 (SLP1). G3-GENES GENOMES GENETICS 2021; 12:6395360. [PMID: 34718545 PMCID: PMC8728037 DOI: 10.1093/g3journal/jkab347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 09/21/2021] [Indexed: 11/13/2022]
Abstract
The yeast Kluyveromyces marxianus SLP1 has the potential for application in biotechnological processes because it can metabolize several sugars and produce high-value metabolites. K. marxianus SLP1 is a thermotolerant yeast isolated from the mezcal process, and it is tolerant to several cell growth inhibitors such as saponins, furan aldehydes, weak acids, and phenolics compounds. The genomic differences between dairy and nondairy strains related to K. marxianus variability are a focus of research attention, particularly the pathways leading this species toward polyploidy. We report the diploid genome assembly of K. marxianus SLP1 nonlactide strain into 32 contigs to reach a size of ∼12 Mb (N50 = 1.3 Mb) and a ∼39% GC content. Genome size is consistent with the k-mer frequency results. Genome annotation by Funannotate estimated 5000 genes in haplotype A and 4910 in haplotype B. The enriched annotated genes by ontology show differences between alleles in biological processes and cellular component. The analysis of variants related to DMKU3 and between haplotypes shows changes in LAC12 and INU1, which we hypothesize can impact carbon source performance. This report presents the first polyploid K. marxianus strain recovered from nonlactic fermenting medium.
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Affiliation(s)
- Carolina Gómez-Márquez
- Departamento de Ciencias Computacionales, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara 44430, México
| | - Dania Sandoval-Nuñez
- Biotecnología Industrial, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C, Zapopan 45019, México
| | - Anne Gschaedler
- Biotecnología Industrial, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C, Zapopan 45019, México
| | - Teresa Romero-Gutiérrez
- Departamento de Ciencias Computacionales, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara 44430, México
| | - Lorena Amaya-Delgado
- Biotecnología Industrial, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C, Zapopan 45019, México
| | - J Alejandro Morales
- Departamento de Ciencias Computacionales, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara 44430, México
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Lin NX, He RZ, Xu Y, Yu XW. Oxidative stress tolerance contributes to heterologous protein production in Pichia pastoris. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:160. [PMID: 34284814 PMCID: PMC8290557 DOI: 10.1186/s13068-021-02013-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 07/12/2021] [Indexed: 05/29/2023]
Abstract
BACKGROUND Pichia pastoris (syn. Komagataella phaffii) is an important yeast system for heterologous protein expression. A robust P. pastoris mutant with oxidative and thermal stress cross-tolerance was acquired in our previous study. The robust mutant can express a 2.5-fold higher level of lipase than its wild type (WT) under methanol induction conditions. RESULTS In this study, we found that the robust mutant not only can express a high level of lipase, but also can express a high level of other heterogeneous proteins (e.g., green fluorescence protein) under methanol induction conditions. Additionally, the intracellular reactive oxygen species (ROS) levels in the robust mutant were lower than that in the WT under methanol induction conditions. To figure out the difference of cellular response to methanol between the WT and the robust mutant, RNA-seq was detected and compared. The results of RNA-seq showed that the expression levels of genes related to antioxidant, MAPK pathway, ergosterol synthesis pathway, transcription factors, and the peroxisome pathway were upregulated in the robust mutant compared to the WT. The upregulation of these key pathways can improve the oxidative stress tolerance of strains and efficiently eliminate cellular ROS. Hence, we inferred that the high heterologous protein expression efficiency in the robust mutant may be due to its enhanced oxidative stress tolerance. Promisingly, we have indeed increased the expression level of lipase up to 1.6-fold by overexpressing antioxidant genes in P. pastoris. CONCLUSIONS This study demonstrated the impact of methanol on the expression levels of genes in P. pastoris and emphasized the contribution of oxidative stress tolerance on heterologous protein expression in P. pastoris. Our results shed light on the understanding of protein expression mechanism in P. pastoris and provided an idea for the rational construction of robust yeast with high expression ability.
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Affiliation(s)
- Nai-Xin Lin
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Rui-Zhen He
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Yan Xu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Xiao-Wei Yu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China.
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Lin NX, He RZ, Xu Y, Yu XW. Augmented peroxisomal ROS buffering capacity renders oxidative and thermal stress cross-tolerance in yeast. Microb Cell Fact 2021; 20:131. [PMID: 34247591 PMCID: PMC8273976 DOI: 10.1186/s12934-021-01623-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 07/01/2021] [Indexed: 12/28/2022] Open
Abstract
Background Thermotolerant yeast has outstanding potential in industrial applications. Komagataella phaffii (Pichia pastoris) is a common cell factory for industrial production of heterologous proteins. Results Herein, we obtained a thermotolerant K. phaffii mutant G14 by mutagenesis and adaptive evolution. G14 exhibited oxidative and thermal stress cross-tolerance and high heterologous protein production efficiency. The reactive oxygen species (ROS) level and lipid peroxidation in G14 were reduced compared to the parent. Oxidative stress response (OSR) and heat shock response (HSR) are two major responses to thermal stress, but the activation of them was different in G14 and its parent. Compared with the parent, G14 acquired the better performance owing to its stronger OSR. Peroxisomes, as the main cellular site for cellular ROS generation and detoxification, had larger volume in G14 than the parent. And, the peroxisomal catalase activity and expression level in G14 was also higher than that of the parent. Excitingly, the gene knockdown of CAT encoding peroxisomal catalase by dCas9 severely reduced the oxidative and thermal stress cross-tolerance of G14. These results suggested that the augmented OSR was responsible for the oxidative and thermal stress cross-tolerance of G14. Nevertheless, OSR was not strong enough to protect the parent from thermal stress, even when HSR was initiated. Therefore, the parent cannot recover, thereby inducing the autophagy pathway and resulting in severe cell death. Conclusions Our findings indicate the importance of peroxisome and the significance of redox balance in thermotolerance of yeasts. Supplementary Information The online version contains supplementary material available at 10.1186/s12934-021-01623-1.
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Affiliation(s)
- Nai-Xin Lin
- Key Laboratory of Industrial Biotechnology, School of Biotechnology, Ministry of Education, Jiangnan University, 214122, Wuxi, People's Republic of China
| | - Rui-Zhen He
- Key Laboratory of Industrial Biotechnology, School of Biotechnology, Ministry of Education, Jiangnan University, 214122, Wuxi, People's Republic of China
| | - Yan Xu
- Key Laboratory of Industrial Biotechnology, School of Biotechnology, Ministry of Education, Jiangnan University, 214122, Wuxi, People's Republic of China
| | - Xiao-Wei Yu
- Key Laboratory of Industrial Biotechnology, School of Biotechnology, Ministry of Education, Jiangnan University, 214122, Wuxi, People's Republic of China.
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Mattoon ER, Casadevall A, Cordero RJB. Beat the heat: correlates, compounds, and mechanisms involved in fungal thermotolerance. FUNGAL BIOL REV 2021. [DOI: 10.1016/j.fbr.2021.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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18
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Balbino TR, da Silveira FA, Ventorim RZ, do Nascimento AG, de Oliveira LL, da Silveira WB. Adaptive responses of Kluyveromyces marxianus CCT 7735 to 2-phenylethanol stress: Alterations in membrane fatty-acid composition, ergosterol content, exopolysaccharide production and reduction in reactive oxygen species. Fungal Genet Biol 2021; 151:103561. [PMID: 33819626 DOI: 10.1016/j.fgb.2021.103561] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 01/06/2021] [Accepted: 03/08/2021] [Indexed: 11/27/2022]
Abstract
2-phenylethanol (2-PE) is a higher aromatic alcohol with a rose-like aroma used in the cosmetic and food industries as a flavoring and displays potential for application as an antifungal. Biotechnological production of 2-PE from yeast is an interesting alternative due to the non-use of toxic compounds and the generation of few by-products. Kluyveromyces marxianus CCT 7735 is a thermotolerant strain capable of producing high 2-PE titers from L-Phenylalanine; however, like other yeast species, its growth has been strongly inhibited by this alcohol. Herein, we aimed to evaluate the effect of 2-PE on cell growth, cell viability, membrane permeability, glucose uptake, metabolism, and morphology in K. marxianus CCT 7735, as well as its adaptive responses. The stress condition was imposed after 4 h of cultivation by adding 3.0 g.L-1 of 2-PE in exponential growing cells. 2-PE stress impaired yeast growth, glucose uptake, fermentative metabolism, membrane permeability, and cell viability. Moreover, the stress condition provoked changes in both morphology and surface roughness. The reactive oxygen species (ROS) increased immediately on exposure to 2-PE. Changes in membrane fatty-acid composition, ergosterol content, exopolysaccharides production, and reduction of the ROS levels appear to be the result of adaptive responses in K. marxianus. Our results provided insights into a better understanding of the effects of 2-PE on K. marxianus and its adaptive responses.
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Affiliation(s)
- Thércia Rocha Balbino
- Laboratory of Microbial Physiology, Department of Microbiology, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - Fernando Augusto da Silveira
- Laboratory of Microbial Physiology, Department of Microbiology, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - Rafaela Zandonade Ventorim
- Laboratory of Microbial Physiology, Department of Microbiology, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - Antônio Galvão do Nascimento
- Laboratory of Microbial Physiology, Department of Microbiology, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - Leandro Licursi de Oliveira
- Laboratory of Immunochemistry and Glycobiology, Department of General Biology, Universidade Federal de Viçosa, Viçosa, MG, Brazil
| | - Wendel Batista da Silveira
- Laboratory of Microbial Physiology, Department of Microbiology, Universidade Federal de Viçosa, Viçosa, MG, Brazil.
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Wang Y, Lin Y, Lu X, Zhuge B, Zong H. Selection and application of novel high temperature inducible promoters in the tolerant yeast Candida glycerinogenes. J Biosci Bioeng 2020; 130:1-5. [DOI: 10.1016/j.jbiosc.2020.02.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 02/04/2020] [Accepted: 02/05/2020] [Indexed: 12/12/2022]
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20
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Evaluation of ethanol fermentation efficiency of sweet sorghum syrups produced by integrated dual-membrane system. Bioprocess Biosyst Eng 2020; 43:1185-1194. [DOI: 10.1007/s00449-020-02313-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 02/14/2020] [Indexed: 12/18/2022]
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21
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Wang Y, Zhang Z, Lu X, Zong H, Zhuge B. Transcription factor Hap5 induces gsh2 expression to enhance 2-phenylethanol tolerance and production in an industrial yeast Candida glycerinogenes. Appl Microbiol Biotechnol 2020; 104:4093-4107. [PMID: 32162090 DOI: 10.1007/s00253-020-10509-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 02/13/2020] [Accepted: 02/28/2020] [Indexed: 02/07/2023]
Abstract
2-Phenylethanol (2-PE) is an important flavor compound but also impairs cell growth severely, which in turn blocks its bioproduction. However, the molecular mechanism of 2-PE tolerance is unclear. In this study, a superb 2-PE stress-tolerant and producing yeast, Candida glycerinogenes, was selected to uncover the underlying mechanism of 2-PE tolerance. We discovered that Hap5 is an essential regulator to 2-PE resistance, and its induction by 2-PE stress occurs at the post-transcriptional level, rather than at the transcriptional level. Under 2-PE stress, Hap5 is activated and imported into the nucleus rapidly. Then, the nuclear Hap5 binds to the glutathione synthetase (gsh2) promoter via CCAAT box, to induce the expression of gsh2 gene. The increased gsh2 expression contributes to enhanced cellular glutathione content, and consequently alleviates ROS accumulation, lipid peroxidation, and cell membrane damage caused by 2-PE toxicity. Specifically, increasing the expression of gsh2 is effective in improving not just 2-PE tolerance (33.7% higher biomass under 29 mM 2-PE), but also 2-PE production (16.2% higher). This study extends our knowledge of 2-PE tolerance mechanism and also provides a promising strategy to improve 2-PE production.
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Affiliation(s)
- Yuqin Wang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,Research Centre of Industrial Microbiology, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Zhongyuan Zhang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,Research Centre of Industrial Microbiology, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Xinyao Lu
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China. .,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China. .,Research Centre of Industrial Microbiology, School of Biotechnology, Jiangnan University, Wuxi, China.
| | - Hong Zong
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,Research Centre of Industrial Microbiology, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Bin Zhuge
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China. .,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China. .,Research Centre of Industrial Microbiology, School of Biotechnology, Jiangnan University, Wuxi, China.
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Keerthiraju E, Du C, Tucker G, Greetham D. A Role for COX20 in Tolerance to Oxidative Stress and Programmed Cell Death in Saccharomyces cerevisiae. Microorganisms 2019; 7:microorganisms7110575. [PMID: 31752220 PMCID: PMC6920987 DOI: 10.3390/microorganisms7110575] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 11/14/2019] [Accepted: 11/15/2019] [Indexed: 11/28/2022] Open
Abstract
Industrial production of bioethanol from lignocellulosic materials (LCM′s) is reliant on a microorganism being tolerant to the stresses inherent to fermentation. Previous work has highlighted the importance of a cytochrome oxidase chaperone gene (COX20) in improving yeast tolerance to acetic acid, a common inhibitory compound produced during pre-treatment of LCM’s. The presence of acetic acid has been shown to induce oxidative stress and programmed cell death, so the role of COX20 in oxidative stress was determined. Analysis using flow cytometry revealed that COX20 expression was associated with reduced levels of reactive oxygen species (ROS) in hydrogen peroxide and metal-induced stress, and there was a reduction in apoptotic and necrotic cells when compared with a strain without COX20. Results on the functionality of COX20 have revealed that overexpression of COX20 induced respiratory growth in Δimp1 and Δcox18, two genes whose presence is essential for yeast respiratory growth. COX20 also has a role in protecting the yeast cell against programmed cell death.
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Affiliation(s)
- Ethiraju Keerthiraju
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, UK; (E.K.); (G.T.)
| | - Chenyu Du
- School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK;
| | - Gregory Tucker
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, UK; (E.K.); (G.T.)
| | - Darren Greetham
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, UK; (E.K.); (G.T.)
- School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK;
- Correspondence: ; Tel.: +44-1484-472378
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Louhasakul Y, Cheirsilp B, Maneerat S, Prasertsan P. Direct transesterification of oleaginous yeast lipids into biodiesel: Development of vigorously stirred tank reactor and process optimization. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2018.06.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Yang F, Lu X, Zong H, Ji H, Zhuge B. Gene expression profiles of Candida glycerinogenes under combined heat and high-glucose stresses. J Biosci Bioeng 2018; 126:464-469. [PMID: 29724569 DOI: 10.1016/j.jbiosc.2018.04.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 04/05/2018] [Accepted: 04/06/2018] [Indexed: 10/17/2022]
Abstract
Low cell tolerance is a basic issue in high-glucose fermentation under high temperature to economically obtain high product titer. Candida glycerinogenes, an industrial yeast, has excellent tolerance to the combined heat and high-glucose stress than Saccharomycescerevisiae. The potential mechanism responsible for the high tolerance was illustrated here. The transcription of the potential stress-responsive genes in two strains were varied under single stress (heat or high-glucose), especially the ribosome-related genes. Unlike S. cerevisiae, C. glycerinogenes up-regulated 17 genes, including most of the single stress responsive genes, and genes Avt1 and Pfk1 under the combined stress, indicating a more systematic stress-responsive system in C. glycerinogenes. Further down-regulating the 17 potential key responsive genes indicated that genes Dip5, Gpd1, Pfk1, Hxt4, Hxt6, and Ino4 are important for cell tolerance to the combined stress. Furthermore, most of the ribosomal function related genes, such as Mrt4, Nug1, Nop53, Rpa190, Rex4, and Nsr1, play important role in cell tolerance. Therefore, the wider responsive gene spectrum and the activated expression of ribosomal function related genes might be key and prerequisite factors for the excellent tolerance to the combined stress of C. glycerinogenes.
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Affiliation(s)
- Fei Yang
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
| | - Xinyao Lu
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
| | - Hong Zong
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
| | - Hao Ji
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
| | - Bin Zhuge
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
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Lyra Colombi B, Silva Zanoni PR, Benathar Ballod Tavares L. Effect of phenolic compounds on bioconversion of glucose to ethanol by yeast Saccharomyces cerevisiae
PE-2. CAN J CHEM ENG 2018. [DOI: 10.1002/cjce.23114] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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26
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Differential Expression Patterns of Pleurotus ostreatus Catalase Genes during Developmental Stages and under Heat Stress. Genes (Basel) 2017; 8:genes8110335. [PMID: 29160795 PMCID: PMC5704248 DOI: 10.3390/genes8110335] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 11/06/2017] [Accepted: 11/17/2017] [Indexed: 01/06/2023] Open
Abstract
Catalases are ubiquitous hydrogen peroxide-detoxifying enzymes. They participate in fungal growth and development, such as mycelial growth and cellular differentiation, and in protecting fungi from oxidative damage under stressful conditions. To investigate the potential functions of catalases in Pleurotus ostreatus, we obtained two catalase genes from a draft genome sequence of P. ostreatus, and cloned and characterized them (Po-cat1 and Po-cat2). Po-cat1 (group II) and Po-cat2 (group III) encoded putative peptides of 745 and 528 amino acids, respectively. Furthermore, the gene structures were variant between Po-cat1 and Po-cat2. Further research revealed that these two catalase genes have divergent expression patterns during different developmental stages. Po-cat1/Po-cat1 was at a barely detectable level in mycelia, accumulated gradually during reproductive growth, and was maximal in separated spores. But no catalase activity of Po-cat1 was detected by native-PAGE during any part of the developmental stages. In contrast, high Po-cat2/Po-cat2 expression and Po-cat2 activity found in mycelia were gradually lost during reproductive growth, and at a minimal level in separated spores. In addition, these two genes responded differentially under 32 °C and 40 °C heat stresses. Po-cat1 was up-regulated under both temperature conditions, while Po-cat2 was up-regulated at 32 °C but down-regulated at 40 °C. The accumulation of catalase proteins correlated with gene expression. These results indicate that the two divergent catalases in P. ostreatus may play different roles during development and under heat stress.
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Seong YJ, Lee HJ, Lee JE, Kim S, Lee DY, Kim KH, Park YC. Physiological and Metabolomic Analysis ofIssatchenkia orientalisMTY1 With Multiple Tolerance for Cellulosic Bioethanol Production. Biotechnol J 2017; 12. [DOI: 10.1002/biot.201700110] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 08/23/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Yeong-Je Seong
- Department of Bio and Fermentation Convergence Technology and BK21 Plus Program, Kookmin University; Seoul 136-702 Korea
| | - Hye-Jin Lee
- Department of Bio and Fermentation Convergence Technology and BK21 Plus Program, Kookmin University; Seoul 136-702 Korea
| | - Jung-Eun Lee
- Department of Bio and Fermentation Convergence Technology and BK21 Plus Program, Kookmin University; Seoul 136-702 Korea
| | - Sooah Kim
- Department of Biotechnology, Graduate School, Korea University; Seoul 136-713 Korea
| | - Do Yup Lee
- Department of Bio and Fermentation Convergence Technology and BK21 Plus Program, Kookmin University; Seoul 136-702 Korea
| | - Kyoung Heon Kim
- Department of Biotechnology, Graduate School, Korea University; Seoul 136-713 Korea
| | - Yong-Cheol Park
- Department of Bio and Fermentation Convergence Technology and BK21 Plus Program, Kookmin University; Seoul 136-702 Korea
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Mejía-Barajas JA, Martínez-Mora JA, Salgado-Garciglia R, Noriega-Cisneros R, Ortiz-Avila O, Cortés-Rojo C, Saavedra-Molina A. Electron transport chain in a thermotolerant yeast. J Bioenerg Biomembr 2017; 49:195-203. [PMID: 28181110 DOI: 10.1007/s10863-017-9696-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 01/25/2017] [Indexed: 10/20/2022]
Abstract
Yeasts capable of growing and surviving at high temperatures are regarded as thermotolerant. For appropriate functioning of cellular processes and cell survival, the maintenance of an optimal redox state is critical of reducing and oxidizing species. We studied mitochondrial functions of the thermotolerant Kluyveromyces marxianus SLP1 and the mesophilic OFF1 yeasts, through the evaluation of its mitochondrial membrane potential (ΔΨm), ATPase activity, electron transport chain (ETC) activities, alternative oxidase activity, lipid peroxidation. Mitochondrial membrane potential and the cytoplasmic free Ca2+ ions (Ca2+ cyt) increased in the SLP1 yeast when exposed to high temperature, compared with the mesophilic yeast OFF1. ATPase activity in the mesophilic yeast diminished 80% when exposed to 40° while the thermotolerant SLP1 showed no change, despite an increase in the mitochondrial lipid peroxidation. The SLP1 thermotolerant yeast exposed to high temperature showed a diminution of 33% of the oxygen consumption in state 4. The uncoupled state 3 of oxygen consumption did not change in the mesophilic yeast when it had an increase of temperature, whereas in the thermotolerant SLP1 yeast resulted in an increase of 2.5 times when yeast were grown at 30o, while a decrease of 51% was observed when it was exposed to high temperature. The activities of the ETC complexes were diminished in the SLP1 when exposed to high temperature, but also it was distinguished an alternative oxidase activity. Our results suggest that the mitochondria state, particularly ETC state, is an important characteristic of the thermotolerance of the SLP1 yeast strain.
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Affiliation(s)
- Jorge A Mejía-Barajas
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030, Morelia, Michoacán, Mexico
| | - José A Martínez-Mora
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030, Morelia, Michoacán, Mexico
| | - Rafael Salgado-Garciglia
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030, Morelia, Michoacán, Mexico
| | - Ruth Noriega-Cisneros
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030, Morelia, Michoacán, Mexico
| | - Omar Ortiz-Avila
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030, Morelia, Michoacán, Mexico
| | - Christian Cortés-Rojo
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030, Morelia, Michoacán, Mexico
| | - Alfredo Saavedra-Molina
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030, Morelia, Michoacán, Mexico.
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