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Sadowska-Bartosz I, Bartosz G. Antioxidant Defense in the Toughest Animals on the Earth: Its Contribution to the Extreme Resistance of Tardigrades. Int J Mol Sci 2024; 25:8393. [PMID: 39125965 PMCID: PMC11313143 DOI: 10.3390/ijms25158393] [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] [Received: 06/22/2024] [Revised: 07/23/2024] [Accepted: 07/29/2024] [Indexed: 08/12/2024] Open
Abstract
Tardigrades are unique among animals in their resistance to dehydration, mainly due to anhydrobiosis and tun formation. They are also very resistant to high-energy radiation, low and high temperatures, low and high pressure, and various chemical agents, Interestingly, they are resistant to ionizing radiation both in the hydrated and dehydrated states to a similar extent. They are able to survive in the cosmic space. Apparently, many mechanisms contribute to the resistance of tardigrades to harmful factors, including the presence of trehalose (though not common to all tardigrades), heat shock proteins, late embryogenesis-abundant proteins, tardigrade-unique proteins, DNA repair proteins, proteins directly protecting DNA (Dsup and TDR1), and efficient antioxidant system. Antioxidant enzymes and small-molecular-weight antioxidants are an important element in the tardigrade resistance. The levels and activities of many antioxidant proteins is elevated by anhydrobiosis and UV radiation; one explanation for their induction during dehydration is provided by the theory of "preparation for oxidative stress", which occurs during rehydration. Genes coding for some antioxidant proteins are expanded in tardigrades; some genes (especially those coding for catalases) were hypothesized to be of bacterial origin, acquired by horizontal gene transfer. An interesting antioxidant protein found in tardigrades is the new Mn-dependent peroxidase.
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Affiliation(s)
- Izabela Sadowska-Bartosz
- Laboratory of Analytical Biochemistry, Institute of Food Technology and Nutrition, College of Natural Sciences, University of Rzeszów, 4 Zelwerowicza Street, 35-601 Rzeszow, Poland;
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Robison ZL, Ren Q, Zhang Z. How to Survive without Water: A Short Lesson on the Desiccation Tolerance of Budding Yeast. Int J Mol Sci 2024; 25:7514. [PMID: 39062766 PMCID: PMC11277543 DOI: 10.3390/ijms25147514] [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: 06/21/2024] [Revised: 07/03/2024] [Accepted: 07/08/2024] [Indexed: 07/28/2024] Open
Abstract
Water is essential to all life on earth. It is a major component that makes up living organisms and plays a vital role in multiple biological processes. It provides a medium for chemical and enzymatic reactions in the cell and is a major player in osmoregulation and the maintenance of cell turgidity. Despite this, many organisms, called anhydrobiotes, are capable of surviving under extremely dehydrated conditions. Less is known about how anhydrobiotes adapt and survive under desiccation stress. Studies have shown that morphological and physiological changes occur in anhydrobiotes in response to desiccation stress. Certain disaccharides and proteins, including heat shock proteins, intrinsically disordered proteins, and hydrophilins, play important roles in the desiccation tolerance of anhydrobiotes. In this review, we summarize the recent findings of desiccation tolerance in the budding yeast Saccharomyces cerevisiae. We also propose that the yeast under desiccation could be used as a model to study neurodegenerative disorders.
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Affiliation(s)
| | | | - Zhaojie Zhang
- Department of Zoology and Physiology, University of Wyoming, Laramie, WY 82071, USA; (Z.L.R.); (Q.R.)
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Zhong J, Sui WW, Bai XY, Qiu ZL, Li XG, Zhu JZ. Characterization and biocontrol mechanism of Streptomyces olivoreticuli as a potential biocontrol agent against Rhizoctonia solani. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 197:105681. [PMID: 38072538 DOI: 10.1016/j.pestbp.2023.105681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/27/2023] [Accepted: 10/28/2023] [Indexed: 12/18/2023]
Abstract
Rhizoctonia solani is a widespread and devastating plant pathogenic fungus that infects many important crops. This pathogen causes tobacco target spot, a disease that is widespread in many tobacco-growing countries and is destructive to tobacco. To identify antagonistic microorganisms with biocontrol potential against this disease, we isolated Streptomyces strains from forest inter-root soil and screened a promising biocontrol strain, ZZ-21. Based on in vitro antagonism assays, ZZ-21 showed a significant inhibitory effect on R. solani and various other phytopathogens. ZZ-21 was identified as Streptomyces olivoreticuli by its phenotypic, genetic, physiological and biochemical properties. Complete genome sequencing revealed that ZZ-21 harbored numerous antimicrobial biosynthesis gene clusters. ZZ-21 significantly reduced the lesion length in detached inoculated leaf assays and reduced the disease index under greenhouse and field conditions. Based on an in vitro antagonistic assay of ZZ-21 culture, the strain exhibited an antifungal activity against R. solani in a dose-dependent manner. The culture filtrate could impair membrane integrity, possibly through membrane lipid peroxidation. ZZ-21 could secrete multiple extracellular enzymes and siderophores. According to a series of antifungal assays, the extracellular metabolites of ZZ-21 contained antimicrobial bioactive compounds composed of proteins/peptides extracted using ammonium sulfate precipitation, which were stable under stress caused by high temperature and protease K. The EC50 value for ammonium sulfate precipitation was determined to be 21.11 μg/mL in this study. Moreover, the proteins/peptides also exhibited biocontrol ability and were observed to alter the plasma membrane integrity of R. solani which were evaluated by biocontrol efficacy assays on detached tobacco leaves and PI staining. Overall, strain ZZ-21 shows the potential to be developed into a biopesticide against tobacco target spot disease.
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Affiliation(s)
- Jie Zhong
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, Hunan Province 410128, PR China
| | - Wen Wen Sui
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, Hunan Province 410128, PR China
| | - Xin Yi Bai
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, Hunan Province 410128, PR China
| | - Ze Lan Qiu
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, Hunan Province 410128, PR China
| | - Xiao Gang Li
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, Hunan Province 410128, PR China.
| | - Jun Zi Zhu
- Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Changsha, Hunan Province 410128, PR China.
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Cornette R, Indo HP, Iwata KI, Hagiwara-Komoda Y, Nakahara Y, Gusev O, Kikawada T, Okuda T, Majima HJ. Oxidative stress is an essential factor for the induction of anhydrobiosis in the desiccation-tolerant midge, Polypedilum vanderplanki (Diptera, Chironomidae). Mitochondrion 2023; 73:84-94. [PMID: 37956777 DOI: 10.1016/j.mito.2023.11.002] [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] [Received: 04/11/2023] [Revised: 10/06/2023] [Accepted: 11/09/2023] [Indexed: 11/15/2023]
Abstract
The sleeping chironomid (Polypedilum vanderplanki) is the only insect capable of surviving complete desiccation in an ametabolic state called anhydrobiosis. Here, we focused on the role of oxidative stress and we observed the production of reactive oxygen species (ROS) in desiccating larvae and in those exposed to salinity stress. Oxidative stress occurs to some extent in desiccating larvae, inducing carbonylation of proteins. Oxidative stress overcomes the antioxidant defenses of the larvae during the first hour following rehydration of anhydrobiotic larvae. It facilitates the oxidation of DNA and cell membrane lipids; however, these damages are quickly repaired after a few hours. In addition to its deleterious effects, we demonstrated that artificial exposure to oxidative stress could induce a response similar to desiccation stress, at the transcriptome and protein levels. Furthermore, the response of anhydrobiosis-related genes to desiccation and salinity stress was inhibited by antioxidant treatment. Thus, we conclude that oxidative stress is an essential trigger for inducing the expression of protective genes during the onset of anhydrobiosis in desiccating of P. vanderplanki larvae.
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Affiliation(s)
- Richard Cornette
- Anhydrobiosis Research Group, Division of Biomaterial Sciences, Institute of Agrobiological Sciences, NARO, 1-2 Owashi, Tsukuba, Ibaraki 305-8634 Japan.
| | - Hiroko P Indo
- Department of Oncology, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan
| | - Ken-Ichi Iwata
- Anhydrobiosis Research Group, Division of Biomaterial Sciences, Institute of Agrobiological Sciences, NARO, 1-2 Owashi, Tsukuba, Ibaraki 305-8634 Japan
| | - Yuka Hagiwara-Komoda
- Anhydrobiosis Research Group, Division of Biomaterial Sciences, Institute of Agrobiological Sciences, NARO, 1-2 Owashi, Tsukuba, Ibaraki 305-8634 Japan; Department of Sustainable Agriculture, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
| | - Yuichi Nakahara
- Anhydrobiosis Research Group, Division of Biomaterial Sciences, Institute of Agrobiological Sciences, NARO, 1-2 Owashi, Tsukuba, Ibaraki 305-8634 Japan; Rimco., Ltd, 12-75 Suzaki, Uruma, Okinawa 904-2234, Japan
| | - Oleg Gusev
- Intractable Disease Research Center, Juntendo University School of Medicine, Tokyo, Japan; Regulatory Genomics Research Center, Institute of Fundamental Biology and Medicine, Kazan Federal University, Kazan, 420008 Russia
| | - Takahiro Kikawada
- Anhydrobiosis Research Group, Division of Biomaterial Sciences, Institute of Agrobiological Sciences, NARO, 1-2 Owashi, Tsukuba, Ibaraki 305-8634 Japan
| | - Takashi Okuda
- Anhydrobiosis Research Group, Division of Biomaterial Sciences, Institute of Agrobiological Sciences, NARO, 1-2 Owashi, Tsukuba, Ibaraki 305-8634 Japan; NEMLI PROJECT LLC, 2756 Okijuku, Tsuchiura, Ibaraki, Japan
| | - Hideyuki J Majima
- Department of Oncology, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan; Biomedical Sciences, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80160, Thailand; Research Excellence Center for Innovation and Health Products (RECIHP), School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80160, Thailand.
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Zhang S, Wang J, Sun H, Yang J, Zhao J, Wang Y. Inhibitory effects of hinokitiol on the development and pathogenicity of Colletotrichum gloeosporioides. World J Microbiol Biotechnol 2023; 39:356. [PMID: 37878063 DOI: 10.1007/s11274-023-03810-1] [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: 07/19/2023] [Accepted: 10/16/2023] [Indexed: 10/26/2023]
Abstract
Postharvest anthracnose of mango fruit caused by Colletotrichum gloeosporioides is a devastating fungal disease, which causes tremendous quality deterioration and economic losses. Hinokitiol, an environmentally friendly natural compound, is effective in controlling a variety of postharvest fungal diseases. However, there is still a lack of research on the inhibitory effect of hinokitiol on C. gloeosporioides and its possible modes of action. In the present study, the activity of hinokitiol against C. gloeosporioides and its potential mechanisms involved have been investigated. We found that hinokitiol treatment could effectively inhibit the virulence of C. gloeosporioides to harvested mango fruit. After treatment with 8 mg/L hinokitiol, the mycelial growth of C. gloeosporioides was completely inhibited. When the concentration of hinokitiol reached 9 mg/L, the spore germination rate of C. gloeosporioides decreased to 2.43% after 9 h of cultivation. The inhibitory effect is mainly due to the attenuation in cell viability, and impairment in plasma membrane followed by leakage of cytoplasmic contents such as nucleic acids, proteins, and soluble carbohydrates, which ultimately leads to the destruction of cell structure. Furthermore, hinokitiol suppressed the expression of pathogenicity-related genes, leading to reduced infection activity. Collectively, these results suggest that hinokitiol may be an excellent bio-fungicides for the management of mango anthracnose.
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Affiliation(s)
- Shen Zhang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, 361021, China
| | - Jingyi Wang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, 361021, China
| | - Huimin Sun
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, 361021, China
| | - Jing Yang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, 361021, China
| | - Jiajia Zhao
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, 361021, China
| | - Ying Wang
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, 361021, China.
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Khotimah H, Astuti RI, Rafi M, Yuliana ND. Metabolomics Study Reveals Biomarker L-Proline as Potential Stress-Protectant Compound for High-Temperature Bioethanol Fermentation by Yeast Pichia kudriavzevii 1P4. Appl Biochem Biotechnol 2023; 195:5180-5198. [PMID: 37103737 DOI: 10.1007/s12010-023-04554-2] [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] [Accepted: 04/18/2023] [Indexed: 04/28/2023]
Abstract
High-temperature ethanol fermentation (> 40 °C) can be applied as effective bioprocess technology to increase ethanol production. Thermotolerant yeast Pichia kudriavzevii 1P4 showed the ability to produce ethanol at optimum 37 °C. Thus, this study evaluated the ethanol productivity of isolate 1P4 at high-temperature ethanol fermentation (42 and 45 °C) and the identification of metabolite biomarkers using untargeted metabolomics with liquid chromatography-tandem mass spectrometry (LC-MS/MS). 1P4 showed tolerance to temperature stress up to 45 °C and thus relevant for high-temperature fermentation. As measured by gas chromatography (GC), bioethanol production of 1P4 at 30, 37, 42, and 45 °C was 5.8 g/l, 7.1 g/l, 5.1 g/l, and 2.8 g/l, respectively. The classification of biomarker compounds was based on orthogonal projection analysis to latent structure discriminant analysis (OPLS-DA), resulting in L-proline being a suspected biomarker compound for isolate 1P4 tolerance against high-temperature stress. Indeed, supplementation of L-proline on fermentation medium supported the growth of 1P4 at high temperatures (> 40 °C) than without L-proline. The bioethanol production with the addition of the L-proline resulted in the highest ethanol concentration (7.15 g/l) at 42 °C. Supplementation of L-proline as a stress-protective compound increased ethanol productivity at high-temperature fermentation of 42 and 45 °C by 36.35% and 83.33%, respectively, compared without the addition of L-proline. Preliminary interpretation of these results indicates that bioprocess engineering through supplementation of stress-protective compounds L-proline increases the fermentation efficiency of isolate 1P4 at higher temperatures (42 °C and 45 °C).
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Affiliation(s)
- Husnul Khotimah
- Graduate School of Biotechnology, IPB University, Bogor, West Java, 16680, Indonesia
| | - Rika Indri Astuti
- Department of Biology, IPB University, Bogor, West Java, 16680, Indonesia.
- Biotechnology Research Center, IPB University, Bogor, West Java, Indonesia.
| | - Mohamad Rafi
- Department of Chemistry, IPB University, Bogor, West Java, 16680, Indonesia
- Advance Research Laboratory, IPB University, Bogor, West Java, 16680, Indonesia
| | - Nancy Dewi Yuliana
- Department of Food Science and Technology, IPB University, Bogor, West Java, 16680, Indonesia
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Wu H, Wong JWC. Mechanisms of indoor mold survival under moisture dynamics, a special water treatment approach within the indoor context. CHEMOSPHERE 2022; 302:134748. [PMID: 35523294 DOI: 10.1016/j.chemosphere.2022.134748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/11/2022] [Accepted: 04/24/2022] [Indexed: 06/14/2023]
Abstract
Mold contamination is one of the most important causes for indoor air pollution. Previous studies have indicated the feasibility of employing wet-dry cycles, a special water treatment approach in indoor environments, to control indoor mold contamination. However, the underlying mechanisms regulating the responses of indoor molds to changing moisture conditions remains to be elucidated. Here, we studied the mechanisms regulating the responses to wet-dry cycles (termed as moisture dynamics) in Aspergillus penicillioides, Cladosporium cladosporioides, and Aspergillus niger. First, the dormant spores of each mold species were grown to the swollen stage. Next, swollen spores were incubated at different water activity (aw) levels (0.4, 0.6 and 0.8 aw) for up to 15 days. Afterward, the viability, lipid peroxidation and antioxidant activities (both enzymatic and non-enzymatic) of treated molds were determined. Our results show that the mold species that survived better under moisture dynamics also encountered less oxidative damage and exhibited stronger antioxidant activities. Moreover, lower RH imposed severer oxidative stress to C. cladosporioides and A. niger. Pearson correlation coefficient indicate significant correlations between oxidative stress and aw of dry periods, oxidative damage and mold survival, as well as oxidative responses and mold survival. Collectively, these results imply that oxidative stress adaptation regulates the viability of A. penicillioides, C. cladosporioides, and A. niger in response to moisture dynamics. Our findings facilitate the development of novel engineering solutions for indoor air pollution.
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Affiliation(s)
- Haoxiang Wu
- Department of Biology, Hong Kong Baptist University, Hong Kong Special Administrative Region, China; Institute of Bioresource and Agriculture, Hong Kong Baptist University, Hong Kong Special Administrative Region, China
| | - Jonathan Woon Chung Wong
- Department of Biology, Hong Kong Baptist University, Hong Kong Special Administrative Region, China; Institute of Bioresource and Agriculture, Hong Kong Baptist University, Hong Kong Special Administrative Region, China.
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Giovannini I, Corsetto PA, Altiero T, Montorfano G, Guidetti R, Rizzo AM, Rebecchi L. Antioxidant Response during the Kinetics of Anhydrobiosis in Two Eutardigrade Species. Life (Basel) 2022; 12:817. [PMID: 35743848 PMCID: PMC9225123 DOI: 10.3390/life12060817] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/23/2022] [Accepted: 05/26/2022] [Indexed: 11/16/2022] Open
Abstract
Anhydrobiosis, a peculiar adaptive strategy existing in nature, is a reversible capability of organisms to tolerate a severe loss of their body water when their surrounding habitat is drying out. In the anhydrobiotic state, an organism lacks all dynamic features of living beings since an ongoing metabolism is absent. The depletion of water in the anhydrobiotic state increases the ionic concentration and the production of reactive oxygen species (ROS). An imbalance between the increased production of ROS and the limited action of antioxidant defences is a source of biomolecular damage and can lead to oxidative stress. The deleterious effects of oxidative stress were demonstrated in anhydrobiotic unicellular and multicellular organisms, which counteract the effects using efficient antioxidant machinery, mainly represented by ROS scavenger enzymes. To gain insights into the dynamics of antioxidant patterns during the kinetics of the anhydrobiosis of two tardigrade species, Paramacrobiotus spatialis and Acutuncus antarcticus, we investigated the activity of enzymatic antioxidants (catalase, superoxide dismutase, glutathione peroxidase, and glutathione reductase) and the amount of non-enzymatic antioxidants (glutathione) in the course of rehydration. In P. spatialis, the activity of catalase increases during dehydration and decreases during rehydration, whereas in A. antarcticus, the activity of superoxide dismutase decreases during desiccation and increases during rehydration. Genomic varieties, different habitats and geographical regions, different diets, and diverse evolutionary lineages may have led to the specialization of antioxidant strategies in the two species.
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Affiliation(s)
- Ilaria Giovannini
- Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (I.G.); (R.G.)
| | - Paola Antonia Corsetto
- Department of Pharmacological and Biomolecular Sciences, University of Milan, 20122 Milan, Italy; (P.A.C.); (G.M.)
| | - Tiziana Altiero
- Department of Education and Humanities, University of Modena and Reggio Emilia, 42121 Reggio Emilia, Italy;
| | - Gigliola Montorfano
- Department of Pharmacological and Biomolecular Sciences, University of Milan, 20122 Milan, Italy; (P.A.C.); (G.M.)
| | - Roberto Guidetti
- Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (I.G.); (R.G.)
| | - Angela Maria Rizzo
- Department of Pharmacological and Biomolecular Sciences, University of Milan, 20122 Milan, Italy; (P.A.C.); (G.M.)
| | - Lorena Rebecchi
- Department of Life Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy; (I.G.); (R.G.)
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Giovannini I, Boothby TC, Cesari M, Goldstein B, Guidetti R, Rebecchi L. Production of reactive oxygen species and involvement of bioprotectants during anhydrobiosis in the tardigrade Paramacrobiotus spatialis. Sci Rep 2022; 12:1938. [PMID: 35121798 PMCID: PMC8816950 DOI: 10.1038/s41598-022-05734-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 12/06/2021] [Indexed: 12/30/2022] Open
Abstract
Water unavailability is an abiotic stress causing unfavourable conditions for life. Nevertheless, some animals evolved anhydrobiosis, a strategy allowing for the reversible organism dehydration and suspension of metabolism as a direct response to habitat desiccation. Anhydrobiotic animals undergo biochemical changes synthesizing bioprotectants to help combat desiccation stresses. One stress is the generation of reactive oxygen species (ROS). In this study, the eutardigrade Paramacrobiotus spatialis was used to investigate the occurrence of ROS associated with the desiccation process. We observed that the production of ROS significantly increases as a function of time spent in anhydrobiosis and represents a direct demonstration of oxidative stress in tardigrades. The degree of involvement of bioprotectants, including those combating ROS, in the P. spatialis was evaluated by perturbing their gene functions using RNA interference and assessing the successful recovery of animals after desiccation/rehydration. Targeting the glutathione peroxidase gene compromised survival during drying and rehydration, providing evidence for the role of the gene in desiccation tolerance. Targeting genes encoding glutathione reductase and catalase indicated that these molecules play roles during rehydration. Our study also confirms the involvement of aquaporins 3 and 10 during rehydration. Therefore, desiccation tolerance depends on the synergistic action of many different molecules working together.
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Affiliation(s)
- Ilaria Giovannini
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 213/D, 41125, Modena, Italy.
| | - Thomas C Boothby
- Department of Molecular Biology, University of Wyoming, Laramie, WY, USA.,Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Michele Cesari
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 213/D, 41125, Modena, Italy
| | - Bob Goldstein
- Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Roberto Guidetti
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 213/D, 41125, Modena, Italy
| | - Lorena Rebecchi
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 213/D, 41125, Modena, Italy
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Hydrogen-Rich Water Prevents Dehydration-Induced Cellular Oxidative Stress and Cell Death in Human Skin Keratinocytes. HYDROGEN 2022. [DOI: 10.3390/hydrogen3010005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Hypohydration is linked to increased risk of a variety of diseases and can be life-threatening, especially in elderly populations. Dehydration induces cellular damage partially through the production of reactive oxygen species (ROS) in cells, tissues and organs. Hydrogen molecules are known to convert ROS to harmless water. Therefore, theoretically hydrogen-rich water (HW) might eliminate dehydration-induced ROS and reverse its harmful effects in cells. In this in vitro study, we demonstrated that air-drying for 5 min could induce ROS generation in both nucleus and cytoplasm of human keratinocytes HaCaT as quantified by CellROX® Green/Orange reagents (Thermo Fisher Scientific, Waltham, Massachusetts, U.S.), respectively. Conversely, when the air-drying time was increased to 10 and 20 min, HaCaT cells lost the ability to produce ROS. Scanning electron microscopic (SEM) images showed that 10 min air-drying could induce severe membrane damage in HaCaT cells. PrestoBlue assay showed that, when HaCaT cells were air-dried for 20 min, cell viability was decreased to 27.6% of the control cells 48 h later. However, once HaCaT cells were pretreated with HW-prepared media, dehydration-induced intracellular ROS, cell membrane damage and cell death were significantly reduced as compared with double distilled water (DDW) under the same conditions. In conclusion, our data suggested that HW can decrease dehydration-induced harmful effects in human cells partially through its antioxidant capacity.
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Wang ST, Ning HQ, Feng LH, Wang YY, Li YQ, Mo HZ. Oxidative phosphorylation system as the target of glycinin basic peptide against Aspergillus niger. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111977] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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12
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Antioxidant Properties of Ergosterol and Its Role in Yeast Resistance to Oxidation. Antioxidants (Basel) 2021; 10:antiox10071024. [PMID: 34202105 PMCID: PMC8300696 DOI: 10.3390/antiox10071024] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/14/2021] [Accepted: 06/22/2021] [Indexed: 01/13/2023] Open
Abstract
Although the functions and structural roles of sterols have been the subject of numerous studies, the reasons for the diversity of sterols in the different eukaryotic kingdoms remain unclear. It is thought that the specificity of sterols is linked to unidentified supplementary functions that could enable organisms to be better adapted to their environment. Ergosterol is accumulated by late branching fungi that encounter oxidative perturbations in their interfacial habitats. Here, we investigated the antioxidant properties of ergosterol using in vivo, in vitro, and in silico approaches. The results showed that ergosterol is involved in yeast resistance to tert-butyl hydroperoxide and protects lipids against oxidation in liposomes. A computational study based on quantum chemistry revealed that this protection could be related to its antioxidant properties operating through an electron transfer followed by a proton transfer mechanism. This study demonstrates the antioxidant role of ergosterol and proposes knowledge elements to explain the specific accumulation of this sterol in late branching fungi. Ergosterol, as a natural antioxidant molecule, could also play a role in the incompletely understood beneficial effects of some mushrooms on health.
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Casas-Godoy L, Arellano-Plaza M, Kirchmayr M, Barrera-Martínez I, Gschaedler-Mathis A. Preservation of non-Saccharomyces yeasts: Current technologies and challenges. Compr Rev Food Sci Food Saf 2021; 20:3464-3503. [PMID: 34096187 DOI: 10.1111/1541-4337.12760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 03/05/2021] [Accepted: 03/29/2021] [Indexed: 11/30/2022]
Abstract
There is a recent and growing interest in the study and application of non-Saccharomyces yeasts, mainly in fermented foods. Numerous publications and patents show the importance of these yeasts. However, a fundamental issue in studying and applying them is to ensure an appropriate preservation scheme that allows to the non-Saccharomyces yeasts conserve their characteristics and fermentative capabilities by long periods of time. The main objective of this review is to present and analyze the techniques available to preserve these yeasts (by conventional and non-conventional methods), in small or large quantities for laboratory or industrial applications, respectively. Wine fermentation is one of the few industrial applications of non-Saccharomyces yeasts, but the preservation stage has been a major obstacle to achieve a wider application of these yeasts. This review considers the preservation techniques, and clearly defines parameters such as culturability, viability, vitality and robustness. Several conservation strategies published in research articles as well as patents are analyzed, and the advantages and disadvantages of each technique used are discussed. Another important issue during conservation processes is the stress to which yeasts are subjected at the time of preservation (mainly oxidative stress). There is little published information on the subject for non-Saccharomyces yeast, but it is a fundamental point to consider when designing a preservation strategy.
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Affiliation(s)
- Leticia Casas-Godoy
- Industrial Biotechnology Unit, National Council for Science and Technology-Center for Research and Assistance in Technology and Design of the State of Jalisco, Zapopan, Mexico
| | - Melchor Arellano-Plaza
- Industrial Biotechnology Unit, Center for Research and Assistance in Technology and Design of the State of Jalisco, Zapopan, Mexico
| | - Manuel Kirchmayr
- Industrial Biotechnology Unit, Center for Research and Assistance in Technology and Design of the State of Jalisco, Zapopan, Mexico
| | - Iliana Barrera-Martínez
- Industrial Biotechnology Unit, National Council for Science and Technology-Center for Research and Assistance in Technology and Design of the State of Jalisco, Zapopan, Mexico
| | - Anne Gschaedler-Mathis
- Industrial Biotechnology Unit, Center for Research and Assistance in Technology and Design of the State of Jalisco, Zapopan, Mexico
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14
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Xiao L, Niu HJ, Qu TL, Zhang XF, Du FY. Streptomyces sp. FX13 inhibits fungicide-resistant Botrytis cinerea in vitro and in vivo by producing oligomycin A. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 175:104834. [PMID: 33993959 DOI: 10.1016/j.pestbp.2021.104834] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 03/23/2021] [Accepted: 03/25/2021] [Indexed: 06/12/2023]
Abstract
Botrytis cinerea is one of the most destructive fungal pathogens which can cause gray mold diseases of numerous plant species, while the frequent applications of fungicides also result in the fungicide-resistances of B. cinerea. In this study, a new Streptomyces strain FX13 was obtained to show biocontrol potentials against fungicide-resistant B. cinerea B3-4. Its in vitro and in vivo antifungal mechanisms were further investigated. The results showed that the culture extract of strain FX13 could significantly inhibit the mycelia growth of B. cinerea B3-4 with the EC50 value of 5.40 mg L-1, which was greatly lower than those of pyrisoxazole, boscalid and azoxystrobin. Further bioassay-guided isolation of the extract had yielded the antifungal component SA1, which was elucidated as a 26-membered polyene macrolide of oligomycin A. SA1 could inhibit the mycelia growth, spore germination, germ tube elongation and sporogenesis of B. cinerea B3-4 in vitro, and also showed significant curative and protective effects against gray mold on grapes in vivo. Moreover, SA1 could result in the loss of membrane integrity and the leakage of cytoplasmic contents, which might be related to the accumulation of reactive oxygen species (ROS) and membrane lipid peroxidation. Besides, intracellular adenosine triphosphatase (ATPase) activity and adenosine triphosphate (ATP) content of B. cinerea B3-4 decreased after SA1-treatment. Overall, the oligomycin A-producing strain FX13 could inhibit fungicide-resistant B. cinerea B3-4 in vitro and in vivo, also highlighting its biocontrol potential against gray mold.
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Affiliation(s)
- Lin Xiao
- Institute of Green Pesticide Development, College of Chemistry and Pharmacy, Qingdao Agricultural University, Qingdao 266109, China
| | - Hong-Jie Niu
- Institute of Green Pesticide Development, College of Chemistry and Pharmacy, Qingdao Agricultural University, Qingdao 266109, China
| | - Tian-Li Qu
- Institute of Green Pesticide Development, College of Chemistry and Pharmacy, Qingdao Agricultural University, Qingdao 266109, China
| | - Xiang-Fei Zhang
- Institute of Green Pesticide Development, College of Chemistry and Pharmacy, Qingdao Agricultural University, Qingdao 266109, China
| | - Feng-Yu Du
- Institute of Green Pesticide Development, College of Chemistry and Pharmacy, Qingdao Agricultural University, Qingdao 266109, China; Shandong Province Key Laboratory of Applied Mycology, Qingdao Agricultural University, Qingdao 266109, China.
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15
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Ren Q, Brenner R, Boothby TC, Zhang Z. Membrane and lipid metabolism plays an important role in desiccation resistance in the yeast Saccharomyces cerevisiae. BMC Microbiol 2020; 20:338. [PMID: 33167888 PMCID: PMC7653879 DOI: 10.1186/s12866-020-02025-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 10/28/2020] [Indexed: 12/23/2022] Open
Abstract
Background Anhydrobiotes, such as the yeast Saccharomyces cerevisiae, are capable of surviving almost total loss of water. Desiccation tolerance requires an interplay of multiple events, including preserving the protein function and membrane integrity, preventing and mitigating oxidative stress, maintaining certain level of energy required for cellular activities in the desiccated state. Many of these crucial processes can be controlled and modulated at the level of organelle morphology and dynamics. However, little is understood about what organelle perturbations manifest in desiccation-sensitive cells as a consequence of drying or how this differs from organelle biology in desiccation-tolerant organisms undergoing anhydrobiosis. Results In this study, electron and optical microscopy was used to examine the dynamic changes of yeast cells during the desiccation process. Dramatic structural changes were observed during the desiccation process, including the diminishing of vacuoles, decrease of lipid droplets, decrease in mitochondrial cristae and increase of ER membrane, which is likely caused by ER stress and unfolded protein response. The survival rate was significantly decreased in mutants that are defective in lipid droplet biosynthesis, or cells treated with cerulenin, an inhibitor of fatty acid synthesis. Conclusion Our study suggests that the metabolism of lipid droplets and membrane may play an important role in yeast desiccation tolerance by providing cells with energy and possibly metabolic water. Additionally, the decrease in mitochondrial cristae coupled with a decrease in lipid droplets is indicative of a cellular response to reduce the production of reactive oxygen species.
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Affiliation(s)
- Qun Ren
- Department of Zoology and Physiology, University of Wyoming, 1000 E. University Ave, Laramie, WY, 82071, USA
| | - Rebecca Brenner
- Department of Zoology and Physiology, University of Wyoming, 1000 E. University Ave, Laramie, WY, 82071, USA
| | - Thomas C Boothby
- Department of Molecular Biology, University of Wyoming, Laramie, WY, 82071, USA
| | - Zhaojie Zhang
- Department of Zoology and Physiology, University of Wyoming, 1000 E. University Ave, Laramie, WY, 82071, USA.
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16
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Nguyen TD, Guyot S, Pénicaud C, Passot S, Sandt C, Fonseca F, Saurel R, Husson F. Highlighting Protective Effect of Encapsulation on Yeast Cell Response to Dehydration Using Synchrotron Infrared Microspectroscopy at the Single-Cell Level. Front Microbiol 2020; 11:1887. [PMID: 32849466 PMCID: PMC7427109 DOI: 10.3389/fmicb.2020.01887] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 07/20/2020] [Indexed: 01/15/2023] Open
Abstract
In the present paper, the Layer by Layer (LbL) method using β-lactoglobulin and sodium alginate was performed to individually encapsulate Saccharomyces cerevisiae cells in microorganized shells in order to protect them against stresses during dehydration. Higher survival (∼1 log) for encapsulated yeast cells was effectively observed after air dehydration at 45°C. For the first time, the potentiality of Synchrotron-Fourier Transform InfraRed microspectroscopy (S-FTIR) was used at the single-cell level in order to analyze the contribution of the biochemical composition of non-encapsulated vs. encapsulated cells in response to dehydration. The microspectroscopy measurements clearly differentiated between non-encapsulated and encapsulated yeast cells in the amide band region. In the spectral region specific to lipids, the S-FTIR results indicated probably the decrease in membrane fluidity of yeast after dehydration without significant distinction between the two samples. These data suggested minor apparent chemical changes in cell attributable to the LbL system upon dehydration. More insights are expected regarding the lower mortality among encapsulated cells. Indeed the hypothesis that the biopolymeric layers could induce less damage in cell by affecting the transfer kinetics during dehydration-rehydration cycle, should be verified in further work.
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Affiliation(s)
- Thanh Dat Nguyen
- UMR PAM A 02.102, AgroSup Dijon, Université Bourgogne Franche-Comté, Dijon, France
| | - Stéphane Guyot
- UMR PAM A 02.102, AgroSup Dijon, Université Bourgogne Franche-Comté, Dijon, France
| | - Caroline Pénicaud
- INRAE, AgroParisTech, Université Paris-Saclay, Thiverval-Grignon, France
| | - Stéphanie Passot
- INRAE, AgroParisTech, Université Paris-Saclay, Thiverval-Grignon, France
| | | | - Fernanda Fonseca
- INRAE, AgroParisTech, Université Paris-Saclay, Thiverval-Grignon, France
| | - Rémi Saurel
- UMR PAM A 02.102, AgroSup Dijon, Université Bourgogne Franche-Comté, Dijon, France
| | - Florence Husson
- UMR PAM A 02.102, AgroSup Dijon, Université Bourgogne Franche-Comté, Dijon, France
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17
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Chen A, An Y, Huang W, Xuan T, Zhang Q, Ye M, Luo S, Xuan X, He H, Zheng J, Wu J. Highly Water-Preserving Zwitterionic Betaine-Incorporated Collagen Sponges With Anti-oxidation and Anti-inflammation for Wound Regeneration. Front Cell Dev Biol 2020; 8:491. [PMID: 32766236 PMCID: PMC7381158 DOI: 10.3389/fcell.2020.00491] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 05/25/2020] [Indexed: 12/14/2022] Open
Abstract
A core problem in wound healing – with both fundamental and technological significance – concerns the rational design of bioactive and moist microenvironments. Here, we design a new class of zwitterionic betaine-incorporated collagen sponges (BET@COL) with integrated anti-oxidation and anti-inflammatory properties for promoting wound healing in a full-thickness wound model. The presence of zwitterionic betaine in a 3D network structure of collagen enables tightly bound and locked water molecules inside sponges via ionic solvation and confinement effect, while the integration of this amino acid also empowers the sponge with anti-oxidation and anti-inflammatory functions. In vitro results demonstrated that BET@COL collagen sponges strongly preserved water content up to 33.78 ± 0.78% at the 80th min at 37°C (only 0.44 ± 0.18% in control), and also exhibited high cell biocompatibility. Further, BET@COL collagen sponges with different betaine contents were applied to a full-thickness cutaneous wound model in mice, followed by a systematical evaluation and comparison of the effect of preserved water on wound healing efficiency in vivo. The optimal BET@COL collagen sponges were able to maintain high water content (e.g., moist microenvironment), suppress oxidative stress, improve anti-inflammation, all of which impose synergetic healing effects to promote wound closure, granulation formation, re-epithelization, collagen deposition and angiogenesis. This work demonstrates a new material as a promising candidate for wound dressing.
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Affiliation(s)
- Anqi Chen
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, China
| | - Ying An
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, China
| | - Wen Huang
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, China
| | - Tengxiao Xuan
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, China
| | - Qianwen Zhang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China.,Department of Dermatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Mengqi Ye
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China
| | - Sha Luo
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China
| | - Xuan Xuan
- Department of Dermatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Huacheng He
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China
| | - Jie Zheng
- Department of Chemical, Biomolecular, and Corrosion Engineering, The University of Akron, Akron, OH, United States.,Department of Polymer Engineering, The University of Akron, Akron, OH, United States
| | - Jiang Wu
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University, Wenzhou, China
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18
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Kondo K, Mori M, Tomita M, Arakawa K. Pre-treatment with D942, a furancarboxylic acid derivative, increases desiccation tolerance in an anhydrobiotic tardigrade Hypsibius exemplaris. FEBS Open Bio 2020; 10:1774-1781. [PMID: 32623826 PMCID: PMC7459401 DOI: 10.1002/2211-5463.12926] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 05/18/2020] [Accepted: 06/30/2020] [Indexed: 11/25/2022] Open
Abstract
The tardigrade Hypsibius exemplaris can undergo anhydrobiosis. Several chemicals that inhibit successful anhydrobiosis in H. exemplaris have been identified, and these chemicals inhibit the activity of signaling molecules. In the present study, we investigated whether upregulation of the activity of these signaling molecules could improve desiccation tolerance of H. exemplaris. Pre‐treatment with an indirect activator of AMP‐activated protein kinase [AMPK; which directly inhibits mammalian NAD(P)H dehydrogenase [quinone] 1 [NQO1] of mitochondrial complex I (D942)] significantly improved desiccation tolerance of H. exemplaris, whereas a direct activator of AMPK did not. To elucidate the underlying molecular mechanisms, we examined the proteome of tardigrades treated with D942. Two proteins, putative glutathione S‐transferase and pirin‐like protein, were upregulated by treatment. Both of these proteins are known to be associated with the response to oxidative stress. One of the downregulated proteins was serine/threonine‐proteinphosphatase 2A (PP2A) 65‐kDa regulatory subunit A alpha isoform, and it is interesting to note that PP2A activity was previously suggested to be required for successful anhydrobiosis in H. exemplaris. Taken together, our results suggest that D942 treatment may partially induce responses common to those of desiccation stress. The identification of a chemical that improves desiccation tolerance of H. exemplaris may facilitate further investigation into desiccation tolerance mechanisms.
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Affiliation(s)
- Koyuki Kondo
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan
| | - Masaru Mori
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan.,Systems Biology Program, Graduate School of Media and Governance, Keio University, Fujisawa, Japan
| | - Masaru Tomita
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan.,Systems Biology Program, Graduate School of Media and Governance, Keio University, Fujisawa, Japan
| | - Kazuharu Arakawa
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan.,Systems Biology Program, Graduate School of Media and Governance, Keio University, Fujisawa, Japan.,Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, Okazaki, Japan
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19
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Deng X, Du B, Zhu F, Gao Y, Li J. Proteomic analysis of Aspergillus niger 3.316 under heat stress. Microbiologyopen 2020; 9:e1012. [PMID: 32107876 PMCID: PMC7221434 DOI: 10.1002/mbo3.1012] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/25/2020] [Accepted: 02/01/2020] [Indexed: 01/04/2023] Open
Abstract
β-Glucosidase production by Aspergillus niger is accompanied by an inevitable temperature increase in the industrial fermentation environment. Hence, the synthetic process of β-glucosidase is negatively affected. However, our understanding of the heat stress response (HSR) mechanism in A. niger is still incomplete. The current study explored the intracellular proteome profile of A. niger 3.316 in group T (50°C stress) and group C (30°C control) using two proteomic approaches (isobaric tags for relative and absolute quantitation [iTRAQ] and label-free) and examined the expression of four proteins using a parallel reaction monitoring (PRM) approach. Based on the result of the iTRAQ proteomic analysis, 1,025 proteins were differentially expressed in group T compared to group C. Using the label-free approach, we only focused on 77 proteins with significant changes in their protein expression levels. In addition, we performed bioinformatics analysis on all these proteins and obtained detailed gene ontology (GO) enrichment and Kyoto encyclopedia of genes and genomes (KEGG) pathway results. Under heat stress conditions, the relative expression levels of proteins with protection and repair functions were upregulated in A. niger 3.316. These proteins were involved in metabolic pathways, oxidative phosphorylation, porphyrin and chlorophyll metabolism, pyruvate metabolism, and the citrate cycle (TCA cycle). The insights obtained from the presented proteomics and bioinformatics analyses can be used to further explore the HSR mechanism of A. niger.
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Affiliation(s)
- Xiangyu Deng
- Hebei Normal University of Science and TechnologyCollege of Food Science and TechnologyQinhuangdaoChina
| | - Bin Du
- Hebei Normal University of Science and TechnologyCollege of Food Science and TechnologyQinhuangdaoChina
| | - Fengmei Zhu
- Hebei Normal University of Science and TechnologyCollege of Food Science and TechnologyQinhuangdaoChina
| | - Yanan Gao
- Hebei Normal University of Science and TechnologyCollege of Food Science and TechnologyQinhuangdaoChina
| | - Jun Li
- Hebei Normal University of Science and TechnologyCollege of Food Science and TechnologyQinhuangdaoChina
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20
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Wu H, Wong JWC. Current challenges for shaping the sustainable and mold-free hygienic indoor environment in humid regions. Lett Appl Microbiol 2020; 70:396-406. [PMID: 32180231 DOI: 10.1111/lam.13291] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 03/13/2020] [Accepted: 03/13/2020] [Indexed: 11/26/2022]
Abstract
Indoor mold grows ubiquitously in humid areas and can affect occupants' health. To prevent indoor mold contamination, one of the key measures suggested by the World Health Organisation and United States Environmental Protection Agency is to maintain an indoor relative humidity (RH) level below 75% or at 30-60%, respectively. However, in tropical and subtropical areas, maintaining these suggested RH levels is equivalent to operating a 24-h air-conditioner (AC) or dehumidifier, which is energy-consuming. As a large part of building expense, the operation time of ACs has been regularly proposed to be cut down because of the requirement of building sustainability. This leads to a trade-off between sustainable building performance and indoor mold hygiene. To balance this trade-off, more sustainable alternatives, such as those that target physical environments (e.g. nutrient and temperature level) or apply new surface coating technologies to inhibit mold growth, have been launched. Despite these initiatives, indoor mold contamination remains an unresolved issue, mainly because these alternative measures only exhibit limited effectiveness or require extra effort. This review aims to summarize the currently adopted mold control measures and discuss their limitations as well as the direction for the future development of sustainable mold control strategies. SIGNIFICANCE AND IMPACT OF THE STUDY: People spend most of their time indoors and hence the presence of indoor mold contamination can compromise the occupants' health. With the wake of climate change which is expected to see an increase in RH and temperature, tropical and subtropical areas are even more prone to mold contamination than they used to be. This study may help facilitate the development of sustainable and effective mold control strategies in the indoor environment.
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Affiliation(s)
- H Wu
- Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region, China.,Institute of Bioresource and Agriculture, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region, China
| | - J W C Wong
- Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region, China.,Institute of Bioresource and Agriculture, Hong Kong Baptist University, Kowloon Tong, Hong Kong Special Administrative Region, China
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21
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Greffe VRG, Michiels J. Desiccation-induced cell damage in bacteria and the relevance for inoculant production. Appl Microbiol Biotechnol 2020; 104:3757-3770. [PMID: 32170388 DOI: 10.1007/s00253-020-10501-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 02/18/2020] [Accepted: 02/26/2020] [Indexed: 12/21/2022]
Abstract
Plant growth-promoting bacteria show great potential for use in agriculture although efficient application remains challenging to achieve. Cells often lose viability during inoculant production and application, jeopardizing the efficacy of the inoculant. Since desiccation has been documented to be the primary stress factor affecting the decrease in survival, obtaining xerotolerance in plant growth-promoting bacteria is appealing. The molecular damage that occurs by drying bacteria has been broadly investigated, although a complete view is still lacking due to the complex nature of the process. Mechanic, structural, and metabolic changes that occur as a result of water depletion may potentially afflict lethal damage to membranes, DNA, and proteins. Bacteria respond to these harsh conditions by increasing production of exopolysaccharides, changing composition of the membrane, improving the stability of proteins, reducing oxidative stress, and repairing DNA damage. This review provides insight into the complex nature of desiccation stress in bacteria in order to facilitate strategic choices to improve survival and shelf life of newly developed inoculants. KEY POINTS: Desiccation-induced damage affects most major macromolecules in bacteria. Most bacteria are not xerotolerant despite multiple endogenous adaption mechanisms. Sensitivity to drying severely hampers inoculant quality.
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Affiliation(s)
- Vincent Robert Guy Greffe
- Centre of Microbial and Plant Genetics, KU Leuven, Leuven, Belgium.,VIB Center for Microbiology, Flanders Institute for Biotechnology, Leuven, Belgium
| | - Jan Michiels
- Centre of Microbial and Plant Genetics, KU Leuven, Leuven, Belgium. .,VIB Center for Microbiology, Flanders Institute for Biotechnology, Leuven, Belgium.
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22
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Protein Aggregation is Associated with Acinetobacter baumannii Desiccation Tolerance. Microorganisms 2020; 8:microorganisms8030343. [PMID: 32121206 PMCID: PMC7142981 DOI: 10.3390/microorganisms8030343] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 02/20/2020] [Accepted: 02/24/2020] [Indexed: 12/23/2022] Open
Abstract
Desiccation tolerance has been implicated as an important characteristic that potentiates the spread of the bacterial pathogen Acinetobacter baumannii on dry surfaces. Here we explore several factors influencing desiccation survival of A. baumannii. At the macroscale level, we find that desiccation tolerance is influenced by cell density and growth phase. A transcriptome analysis indicates that desiccation represents a unique state for A. baumannii compared to commonly studied growth phases and strongly influences pathways responsible for proteostasis. Remarkably, we find that an increase in total cellular protein aggregates, which is often considered deleterious, correlates positively with the ability of A. baumannii to survive desiccation. We show that inducing protein aggregate formation prior to desiccation increases survival and, importantly, that proteins incorporated into cellular aggregates can retain activity. Our results suggest that protein aggregates may promote desiccation tolerance in A. baumannii through preserving and protecting proteins from damage during desiccation until rehydration occurs.
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23
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Yeast Viral Killer Toxin K1 Induces Specific Host Cell Adaptions via Intrinsic Selection Pressure. Appl Environ Microbiol 2020; 86:AEM.02446-19. [PMID: 31811035 DOI: 10.1128/aem.02446-19] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 11/26/2019] [Indexed: 12/22/2022] Open
Abstract
The killer phenomenon in yeast (Saccharomyces cerevisiae) not only provides the opportunity to study host-virus interactions in a eukaryotic model but also represents a powerful tool to analyze potential coadaptional events and the role of killer yeast in biological diversity. Although undoubtedly having a crucial impact on the abundance and expression of the killer phenotype in killer-yeast harboring communities, the influence of a particular toxin on its producing host cell has not been addressed sufficiently. In this study, we describe a model system of two K1 killer yeast strains with distinct phenotypical differences pointing to substantial selection pressure in response to the toxin secretion level. Transcriptome and lipidome analyses revealed specific and intrinsic host cell adaptions dependent on the amount of K1 toxin produced. High basal expression of genes coding for osmoprotectants and stress-responsive proteins in a killer yeast strain secreting larger amounts of active K1 toxin implies a generally increased stress tolerance. Moreover, the data suggest that immunity of the host cell against its own toxin is essential for the balanced virus-host interplay providing valuable hints to elucidate the molecular mechanisms underlying K1 immunity and implicating an evolutionarily conserved role for toxin immunity in natural yeast populations.IMPORTANCE The killer phenotype in Saccharomyces cerevisiae relies on the cytoplasmic persistence of two RNA viruses. In contrast to bacterial toxin producers, killer yeasts necessitate a specific immunity mechanism against their own toxin because they bear the same receptor populations as sensitive cells. Although the killer phenomenon is highly abundant and has a crucial impact on the structure of yeast communities, the influence of a particular toxin on its host cell has been barely addressed. In our study, we used two derivatives secreting different amount of the killer toxin K1 to analyze potential coadaptional events in this particular host/virus system. Our data underline the dependency of the host cell's ability to cope with extracellular toxin molecules and intracellular K1 molecules provided by the virus. Therefore, this research significantly advances the current understanding of the evolutionarily conserved role of this molecular machinery as an intrinsic selection pressure in yeast populations.
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24
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Santa Maria SR, Marina DB, Massaro Tieze S, Liddell LC, Bhattacharya S. BioSentinel: Long-Term Saccharomyces cerevisiae Preservation for a Deep Space Biosensor Mission. ASTROBIOLOGY 2020; 23:617-630. [PMID: 31905002 DOI: 10.1089/ast.2019.2073] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The biological risks of the deep space environment must be elucidated to enable a new era of human exploration and scientific discovery beyond low earth orbit (LEO). There is a paucity of deep space biological missions that will inform us of the deleterious biological effects of prolonged exposure to the deep space environment. To safely undertake long-term missions to Mars and space habitation beyond LEO, we must first prove and optimize autonomous biosensors to query the deep space radiation environment. Such biosensors must contain organisms that can survive for extended periods with minimal life support technology and must function reliably with intermittent communication with Earth. NASA's BioSentinel mission, a nanosatellite containing the budding yeast Saccharomyces cerevisiae, is such a biosensor and one of the first biological missions beyond LEO in nearly half a century. It will help fill critical gaps in knowledge about the effects of uniquely composed, chronic, low-flux deep space radiation on biological systems and in particular will provide valuable insight into the DNA damage response to highly ionizing particles. Due to yeast's robustness and desiccation tolerance, it can survive for periods analogous to that of a human Mars mission. In this study, we discuss our optimization of conditions for long-term reagent storage and yeast survival under desiccation in preparation for the BioSentinel mission. We show that long-term yeast cell viability is maximized when cells are air-dried in trehalose solution and stored in a low-relative humidity and low-temperature environment and that dried yeast is sensitive to low doses of deep space-relevant ionizing radiation under these conditions. Our findings will inform the design and development of improved future long-term biological missions into deep space.
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Affiliation(s)
- Sergio R Santa Maria
- COSMIAC Research Center, University of New Mexico, Albuquerque, New Mexico
- Space Biosciences Research, NASA Ames Research Center, Moffett Field, California
| | - Diana B Marina
- Space Biosciences Research, NASA Ames Research Center, Moffett Field, California
- Amyris, Inc., Emeryville, California (present address)
| | - Sofia Massaro Tieze
- Space Biosciences Research, NASA Ames Research Center, Moffett Field, California
- Blue Marble Space Institute of Science, Seattle, Washington
| | - Lauren C Liddell
- Space Biosciences Research, NASA Ames Research Center, Moffett Field, California
- Logyx LLC, Mountain View, California
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25
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Wu H, Wong JWC. The role of oxidative stress in the growth of the indoor mold Cladosporium cladosporioides under water dynamics. INDOOR AIR 2020; 30:117-125. [PMID: 31618482 DOI: 10.1111/ina.12613] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 10/01/2019] [Accepted: 10/14/2019] [Indexed: 06/10/2023]
Abstract
Moisture is one of the critical abiotic factors that can affect mold growth. Indoor humidity is typically fluctuating, which renders a transient water supply for mold growth. Understanding mold growth under water dynamics and its underlying mechanisms can help in the development of novel and sustainable mold prevention strategies. In this study, pre-germination and germinated spores of Cladosporium cladosporioides were exposed to daily wet-dry cycles with different combinations of wetting and drying duration. Afterward, growth delay, cellular H2 O2 concentration, and catalase (CAT) activity were measured and compared. We found that under daily wet-dry cycles, the longer the growth delay was observed, the higher the cellular H2 O2 concentration was detected, with the 12-12 wet-dry cycle (12-hour wet and 12-hour dry) showing the longest growth delay and highest cellular H2 O2 production. A positive correlation between cellular H2 O2 concentration and growth delay was suggested by Pearson correlation coefficient and linear regression analysis (P < .0001, R2 = 0.85). Furthermore, under daily wet-dry cycles, molds derived from pre-germination spores generally exhibited shorter growth delay, lower cellular H2 O2 concentration, and higher CAT activity than molds developed from germinated spores. These results together suggest that the growth delay of C. cladosporioides under water dynamics is associated with oxidative stress.
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Affiliation(s)
- Haoxiang Wu
- Department of Biology, Hong Kong Baptist University, Kowloon Tong, China
- Institute of Bioresource and Agriculture, Hong Kong Baptist University, Kowloon Tong, China
| | - Jonathan Woon Chung Wong
- Department of Biology, Hong Kong Baptist University, Kowloon Tong, China
- Institute of Bioresource and Agriculture, Hong Kong Baptist University, Kowloon Tong, China
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26
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Fang Y, McMullen LM, Gänzle MG. Effect of drying on oxidation of membrane lipids and expression of genes encoded by the Shiga toxin prophage in Escherichia coli. Food Microbiol 2019; 86:103332. [PMID: 31703888 DOI: 10.1016/j.fm.2019.103332] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 08/12/2019] [Accepted: 09/12/2019] [Indexed: 01/13/2023]
Abstract
Drying processes do not eliminate pathogenic Escherichia coli in foods but induce sublethal injury, which may also induce the Shiga toxin (Stx) prophage. This study investigated the effect of drying on membrane lipid oxidation and stx expression in E. coli. Lipid peroxidation was probed with C11-BODIPY581/591; and stx expression was assayed by quantification of GFP in E. coli O104:H4 Δstx2a:gfp:ampr. Treatment of E. coli with H2O2 oxidized the probe; probe oxidation was also observed after drying and rehydration. Lipid oxidation and the lethality of drying were reduced when cells were dried with trehalose under anaerobic condition; in addition, viability and probe oxidation differed between E. coli AW1.7 and E. coli AW1.7Δcfa. Desiccation tolerance thus relates to membrane lipid oxidation. Drying also resulted in expression of GFP in 5% of the population. Overexpression of gfp and recA after drying and rehydration suggested that the expression of Stx prophage was regulated by the SOS response. Overall, C11-BODIPY581/591 allowed investigation of lipid peroxidation in bacteria. Drying causes lipid oxidation, DNA damage and induction of genes encoded by the Stx prophage in E. coli.
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Affiliation(s)
- Yuan Fang
- University of Alberta, Dept. of Agricultural, Food and Nutritional Science, Edmonton, Canada
| | - Lynn M McMullen
- University of Alberta, Dept. of Agricultural, Food and Nutritional Science, Edmonton, Canada
| | - Michael G Gänzle
- University of Alberta, Dept. of Agricultural, Food and Nutritional Science, Edmonton, Canada; Hubei University of Technology, College of Bioengineering and Food Science, Wuhan, PR China.
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27
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Câmara ADA, Maréchal PA, Tourdot-Maréchal R, Husson F. Dehydration stress responses of yeasts Torulaspora delbrueckii, Metschnikowia pulcherrima and Lachancea thermotolerans: Effects of glutathione and trehalose biosynthesis. Food Microbiol 2019; 79:137-146. [DOI: 10.1016/j.fm.2018.12.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 11/12/2018] [Accepted: 12/11/2018] [Indexed: 12/17/2022]
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28
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Gier S, Simon M, Nordström K, Khalifa S, Schulz MH, Schmitt MJ, Breinig F. Transcriptome Kinetics of Saccharomyces cerevisiae in Response to Viral Killer Toxin K1. Front Microbiol 2019; 10:1102. [PMID: 31156606 PMCID: PMC6531845 DOI: 10.3389/fmicb.2019.01102] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 04/30/2019] [Indexed: 11/29/2022] Open
Abstract
The K1 A/B toxin secreted by virus-infected Saccharomyces cerevisiae strains kills sensitive cells via disturbance of cytoplasmic membrane functions. Despite decades of research, the mechanisms underlying K1 toxicity and immunity have not been elucidated yet. In a novel approach, this study aimed to characterize transcriptome changes in K1-treated sensitive yeast cells in a time-dependent manner. Global transcriptional profiling revealed substantial cellular adaptations in target cells resulting in 1,189 differentially expressed genes in total. Killer toxin K1 induced oxidative, cell wall and hyperosmotic stress responses as well as rapid down-regulation of transcription and translation. Essential pathways regulating energy metabolism were also significantly affected by the toxin. Remarkably, a futile cycle of the osmolytes trehalose and glycogen was identified probably representing a critical feature of K1 intoxication. In silico analysis suggested several transcription factors involved in toxin-triggered signal transduction. The identified transcriptome changes provide valuable hints to illuminate the still unknown molecular events leading to K1 toxicity and immunity implicating an evolutionarily conserved response at least initially counteracting ionophoric toxin action.
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Affiliation(s)
- Stefanie Gier
- Department of Molecular and Cell Biology, Saarland University, Saarbrücken, Germany.,Center of Human and Molecular Biology (ZHMB), Saarland University, Saarbrücken, Germany
| | - Martin Simon
- Center of Human and Molecular Biology (ZHMB), Saarland University, Saarbrücken, Germany.,Molecular Cell Biology and Microbiology, University of Wuppertal, Wuppertal, Germany.,Molecular Cell Dynamics, Saarland University, Saarbrücken, Germany
| | - Karl Nordström
- Center of Human and Molecular Biology (ZHMB), Saarland University, Saarbrücken, Germany.,Department of Genetics/Epigenetics, Saarland University, Saarbrücken, Germany
| | - Salem Khalifa
- Cluster of Excellence "Multimodal Computing and Interaction", Max Planck Institute for Informatics, Saarland University, Saarbrücken, Germany
| | - Marcel H Schulz
- Cluster of Excellence "Multimodal Computing and Interaction", Max Planck Institute for Informatics, Saarland University, Saarbrücken, Germany
| | - Manfred J Schmitt
- Department of Molecular and Cell Biology, Saarland University, Saarbrücken, Germany.,Center of Human and Molecular Biology (ZHMB), Saarland University, Saarbrücken, Germany
| | - Frank Breinig
- Department of Molecular and Cell Biology, Saarland University, Saarbrücken, Germany.,Center of Human and Molecular Biology (ZHMB), Saarland University, Saarbrücken, Germany
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29
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Yamada TG, Suetsugu Y, Deviatiiarov R, Gusev O, Cornette R, Nesmelov A, Hiroi N, Kikawada T, Funahashi A. Transcriptome analysis of the anhydrobiotic cell line Pv11 infers the mechanism of desiccation tolerance and recovery. Sci Rep 2018; 8:17941. [PMID: 30560869 PMCID: PMC6298976 DOI: 10.1038/s41598-018-36124-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 11/15/2018] [Indexed: 11/09/2022] Open
Abstract
The larvae of the African midge, Polypedilum vanderplanki, can enter an ametabolic state called anhydrobiosis to overcome fatal desiccation stress. The Pv11 cell line, derived from P. vanderplanki embryo, shows desiccation tolerance when treated with trehalose before desiccation and resumes proliferation after rehydration. However, the molecular mechanisms of this desiccation tolerance remain unknown. Here, we performed high-throughput CAGE-seq of mRNA and a differentially expressed gene analysis in trehalose-treated, desiccated, and rehydrated Pv11 cells, followed by gene ontology analysis of the identified differentially expressed genes. We detected differentially expressed genes after trehalose treatment involved in various stress responses, detoxification of harmful chemicals, and regulation of oxidoreduction that were upregulated. In the desiccation phase, L-isoaspartyl methyltransferase and heat shock proteins were upregulated and ribosomal proteins were downregulated. Analysis of differentially expressed genes during rehydration supported the notion that homologous recombination, nucleotide excision repair, and non-homologous recombination were involved in the recovery process. This study provides initial insights into the molecular mechanisms underlying the extreme desiccation tolerance of Pv11 cells.
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Affiliation(s)
- Takahiro G Yamada
- Department of Biosciences and Informatics, Keio University, Yokohama, Kanagawa, 223-8522, Japan
| | - Yoshitaka Suetsugu
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8634, Japan
| | | | - Oleg Gusev
- Kazan Federal University, Kazan, Tatarstan, 420008, Russia.,RIKEN, Yokohama, Kanagawa, 230-0045, Japan
| | - Richard Cornette
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8634, Japan
| | | | - Noriko Hiroi
- Faculty of Pharmaceutical Science, Sanyo-Onoda City University, Sanyo-Onoda, Yamaguchi, 756-0884, Japan
| | - Takahiro Kikawada
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, 305-8634, Japan. .,Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, 277-8562, Japan.
| | - Akira Funahashi
- Department of Biosciences and Informatics, Keio University, Yokohama, Kanagawa, 223-8522, Japan.
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30
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Kumar Babele P. Zinc oxide nanoparticles impose metabolic toxicity by de-regulating proteome and metabolome in Saccharomyces cerevisiae. Toxicol Rep 2018; 6:64-73. [PMID: 30581761 PMCID: PMC6297892 DOI: 10.1016/j.toxrep.2018.12.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 11/28/2018] [Accepted: 12/05/2018] [Indexed: 12/31/2022] Open
Abstract
Untargeted proteomic and metabolic approaches provide complete toxicity assessment. ZnO-NPs de-regulate the proteome and metabolome of S. cerevisiae. ZnO-NPs affect the key metabolites of central metabolic pathways. Protein and/or metabolite can be used as biomarker specific to the ZnO-NPs induced toxicity.
As zinc oxide nanoparticles are being increasingly used in various applications, it is important to assess their potential toxic implications. Stress responses and adaptations are primarily controlled by modulation in cellular proteins (enzyme) and concentration of metabolites. To date proteomics or metabolomics applications in nanotoxicity assessment have been applied to a restricted extent. Here we utilized 2DE and 1H NMR based proteomics and metabolomics respectively to delineate the toxicity mechanism of zinc oxide nanoparticles (ZnO-NPs) in budding yeast S. cerevisiae. We found that the physiological and metabolic processes were altered in the S. cerevisiae upon ZnO-NPs exposure. Almost 40% proteins were down-regulated in ZnO-NPs (10 mg L−1) exposed cell as compared to control. Metabolomics and system biology based pathway analysis, revealed that ZnO-NPs repressed a wide range of key metabolites involved in central carbon metabolism, cofactors synthesis, amino acid and fatty acid biosynthesis, purines and pyrimidines, nucleoside and nucleotide biosynthetic pathways. These metabolic changes may be associated with the energy metabolism, antioxidation, DNA and protein damage and membrane stability. We concluded that untargeted proteomic and metabolic approaches provide more complete measurements and suggest probable molecular mechanisms of nanomaterials toxicity.
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Affiliation(s)
- Piyoosh Kumar Babele
- Department of Biological Sciences, Indian Institute of Science Education and Research Bhopal, Bhauri, Bhopal, 462066, Madhya Pradesh, India
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31
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Li S, Yue Q, Zhou S, Yan J, Zhang X, Ma F. Trehalose Contributes to Gamma-Linolenic Acid Accumulation in Cunninghamella echinulata Based on de Novo Transcriptomic and Lipidomic Analyses. Front Microbiol 2018; 9:1296. [PMID: 29963034 PMCID: PMC6013572 DOI: 10.3389/fmicb.2018.01296] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 05/28/2018] [Indexed: 12/26/2022] Open
Abstract
Gamma-linolenic acid (GLA) is essential for the well-being of humans and other animals. People may lack GLA because of aging or diseases, and thus, dietary supplements or medical reagents containing GLA-enriched lipids are in demand. Cunninghamella echinulata is a potential GLA-producing strain. Interestingly, we found that the GLA content of C. echinulata FR3 was up to 21% (proportion of total lipids) when trehalose was used as a carbon source, significantly higher than the 13% found when glucose was used. Trehalose is quite common and can be accumulated in microorganisms under stress conditions. However, little information is available regarding the role of trehalose in GLA synthesis and accumulation. Our study aimed to understand how the metabolism of C. echinulata responds to trehalose as a carbon source for GLA and lipid biosynthesis. We profiled the major sugars, fatty acids, phospholipids, and gene transcripts of C. echinulata FR3 grown in trehalose medium with glucose as a control by de novo transcriptomics, lipidomics, and other methods. The results showed that trehalose could influence the expression of desaturases and that the GLA proportion increased because of delta-6 desaturase upregulation. The increased GLA was transferred to the extracellular environment through the active PI ion channel, which prefers polyunsaturated acyl chains. At the same time, trehalose might prevent GLA from peroxidation by forming a trehalose-polyunsaturated fatty acid (PUFA) complex. Our study provides new insights into the functions of trehalose in GLA accumulation.
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Affiliation(s)
- Shue Li
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Qiang Yue
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Shuai Zhou
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Jing Yan
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoyu Zhang
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Fuying Ma
- Key Laboratory of Molecular Biophysics of MOE, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China.,Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan, China
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32
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Improving total glutathione and trehalose contents in Saccharomyces cerevisiae cells to enhance their resistance to fluidized bed drying. Process Biochem 2018. [DOI: 10.1016/j.procbio.2018.03.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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33
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Jenkins DM, Powell CD, Smart KA. Dried Yeast: Impact of Dehydration and Rehydration on Brewing Yeast DNA Integrity. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2018. [DOI: 10.1094/asbcj-2010-0629-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- David M. Jenkins
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, UK
| | | | - Katherine A. Smart
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, UK
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34
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Gamero-Sandemetrio E, Payá-Tormo L, Gómez-Pastor R, Aranda A, Matallana E. Non-canonical regulation of glutathione and trehalose biosynthesis characterizes non- Saccharomyces wine yeasts with poor performance in active dry yeast production. MICROBIAL CELL 2018; 5:184-197. [PMID: 29610760 PMCID: PMC5878686 DOI: 10.15698/mic2018.04.624] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Several yeast species, belonging to Saccharomyces and non-Saccharomyces genera, play fundamental roles during spontaneous must grape fermentation, and recent studies have shown that mixed fermentations, co-inoculated with S. cerevisiae and non-Saccharomyces strains, can improve wine organoleptic properties. During active dry yeast (ADY) production, antioxidant systems play an essential role in yeast survival and vitality as both biomass propagation and dehydration cause cellular oxidative stress and negatively affect technological performance. Mechanisms for adaptation and resistance to desiccation have been described for S. cerevisiae, but no data are available on the physiology and oxidative stress response of non-Saccharomyces wine yeasts and their potential impact on ADY production. In this study we analyzed the oxidative stress response in several non-Saccharomyces yeast species by measuring the activity of reactive oxygen species (ROS) scavenging enzymes, e.g., catalase and glutathione reductase, accumulation of protective metabolites, e.g., trehalose and reduced glutathione (GSH), and lipid and protein oxidation levels. Our data suggest that non-canonical regulation of glutathione and trehalose biosynthesis could cause poor fermentative performance after ADY production, as it corroborates the corrective effect of antioxidant treatments, during biomass propagation, with both pure chemicals and food-grade argan oil.
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Affiliation(s)
| | - Lucía Payá-Tormo
- Department of Biotechnology, Institute for Agrochemistry and Food Technology, CSIC, Valencia, Spain
| | - Rocío Gómez-Pastor
- Department of Biotechnology, Institute for Agrochemistry and Food Technology, CSIC, Valencia, Spain.,Present address: Department of Neuroscience, Medical School, University of Minnesota, Minneapolis, Minnesota, USA
| | - Agustín Aranda
- Department of Biotechnology, Institute for Agrochemistry and Food Technology, CSIC, Valencia, Spain.,Institute for Integrative Systems Biology I2SysBio, Universitat de València/CSIC, Valencia. Spain
| | - Emilia Matallana
- Department of Biotechnology, Institute for Agrochemistry and Food Technology, CSIC, Valencia, Spain.,Institute for Integrative Systems Biology I2SysBio, Universitat de València/CSIC, Valencia. Spain
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35
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Nesmelov A, Cornette R, Gusev O, Kikawada T. The Antioxidant System in the Anhydrobiotic Midge as an Essential, Adaptive Mechanism for Desiccation Survival. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1081:259-270. [PMID: 30288714 DOI: 10.1007/978-981-13-1244-1_14] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
One of the major damaging factors for living organisms experiencing water insufficiency is oxidative stress. Loss of water causes a dramatic increase in the production of reactive oxygen species (ROS). Thus, the ability for some organisms to survive almost complete desiccation (called anhydrobiosis) is tightly related to the ability to overcome extraordinary oxidative stress. The most complex anhydrobiotic organism known is the larva of the chironomid Polypedilum vanderplanki. Its antioxidant system shows remarkable features, such as an expansion of antioxidant genes, their overexpression, as well as the absence or low expression of enzymes required for the synthesis of ascorbate and glutathione and their antioxidant function. In this chapter, we summarize existing data about the antioxidant system of this insect, which is able to cope with substantial oxidative damage, even in an intracellular environment that is severely disturbed due to water loss.
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Affiliation(s)
| | - Richard Cornette
- Molecular Biomimetics Research Unit, Institute of Agrobiological Sciences, NARO, Tsukuba, Japan
| | - Oleg Gusev
- Kazan Federal University, Kazan, Russia
- RIKEN Center for Life Science Technologies, RIKEN, Yokohama, Japan
| | - Takahiro Kikawada
- Molecular Biomimetics Research Unit, Institute of Agrobiological Sciences, NARO, Tsukuba, Japan.
- Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan.
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36
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Tambellini NP, Zaremberg V, Krishnaiah S, Turner RJ, Weljie AM. Primary Metabolism and Medium-Chain Fatty Acid Alterations Precede Long-Chain Fatty Acid Changes Impacting Neutral Lipid Metabolism in Response to an Anticancer Lysophosphatidylcholine Analogue in Yeast. J Proteome Res 2017; 16:3741-3752. [PMID: 28849941 DOI: 10.1021/acs.jproteome.7b00430] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The nonmetabolizable lysophosphatidylcholine (LysoPC) analogue edelfosine is the prototype of a class of compounds being investigated for their potential as selective chemotherapeutic agents. Edelfosine targets membranes, disturbing cellular homeostasis. Is not clear at this point how membrane alterations are communicated between intracellular compartments leading to growth inhibition and eventual cell death. In the present study, a combined metabolomics/lipidomics approach for the unbiased identification of metabolic pathways altered in yeast treated with sublethal concentrations of the LysoPC analogue was employed. Mass spectrometry of polar metabolites, fatty acids, and lipidomic profiling was used to study the effects of edelfosine on yeast metabolism. Amino acid and sugar metabolism, the Krebs cycle, and fatty acid profiles were most disrupted, with polar metabolites and short-medium chain fatty acid changes preceding long and very long-chain fatty acid variations. Initial increases in metabolites such as trehalose, proline, and γ-amino butyric acid with a concomitant decrease in metabolites of the Krebs cycle, citrate and fumarate, are interpreted as a cellular attempt to offset oxidative stress in response to mitochondrial dysfunction induced by the treatment. Notably, alanine, inositol, and myristoleic acid showed a steady increase during the period analyzed (2, 4, and 6 h after treatment). Of importance was the finding that edelfosine induced significant alterations in neutral glycerolipid metabolism resulting in a significant increase in the signaling lipid diacylglycerol.
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Affiliation(s)
- Nicolas P Tambellini
- Department of Biological Sciences, University of Calgary , Calgary, Alberta T2N 1N4, Canada.,Metabolomics Research Centre, University of Calgary , Calgary, Alberta T2N 1N4, Canada
| | - Vanina Zaremberg
- Department of Biological Sciences, University of Calgary , Calgary, Alberta T2N 1N4, Canada
| | - Saikumari Krishnaiah
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine , Philadelphia, Pennsylvania 19104-5158, United States of America
| | - Raymond J Turner
- Department of Biological Sciences, University of Calgary , Calgary, Alberta T2N 1N4, Canada
| | - Aalim M Weljie
- Department of Biological Sciences, University of Calgary , Calgary, Alberta T2N 1N4, Canada.,Metabolomics Research Centre, University of Calgary , Calgary, Alberta T2N 1N4, Canada.,Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine , Philadelphia, Pennsylvania 19104-5158, United States of America
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37
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Cassano R, Trombino S. Trehalose-based hydrogel potentially useful for the skin burn treatment. J Appl Polym Sci 2017. [DOI: 10.1002/app.44755] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Roberta Cassano
- Department of Pharmacy; Health and Nutritional Sciences, University of Calabria; 87036 Arcavacata di Rende Cosenza Italy
| | - Sonia Trombino
- Department of Pharmacy; Health and Nutritional Sciences, University of Calabria; 87036 Arcavacata di Rende Cosenza Italy
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38
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Lee SB, Choi WS, Jo HJ, Yeo SH, Park HD. Optimization of air-blast drying process for manufacturing Saccharomyces cerevisiae and non-Saccharomyces yeast as industrial wine starters. AMB Express 2016; 6:105. [PMID: 27822898 PMCID: PMC5099301 DOI: 10.1186/s13568-016-0278-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 10/31/2016] [Indexed: 11/13/2022] Open
Abstract
Wine yeast (Saccharomyces cerevisiae D8) and non-Saccharomyces wine yeasts (Hanseniaspora uvarum S6 and Issatchenkia orientalis KMBL5774) were studied using air-blast drying instead of the conventional drying methods (such as freeze and spray drying). Skim milk—a widely used protective agent—was used and in all strains, the highest viabilities following air-blast drying were obtained using 10% skim milk. Four excipients (wheat flour, nuruk, artichoke powder, and lactomil) were evaluated as protective agents for yeast strains during air-blast drying. Our results showed that 7 g lactomil was the best excipient in terms of drying time, powder form, and the survival rate of the yeast in the final product. Finally, 7 types of sugars were investigated to improve the survival rate of air-blast dried yeast cells: 10% trehalose, 10% sucrose, and 10% glucose had the highest survival rate of 97.54, 92.59, and 79.49% for S. cerevisiae D8, H. uvarum S6, and I. orientalis KMBL5774, respectively. After 3 months of storage, S. cerevisiae D8 and H. uvarum S6 demonstrated good survival rates (making them suitable for use as starters), whereas the survival rate of I. orientalis KMBL5774 decreased considerably compared to the other strains. Air-blast dried S. cerevisiae D8 and H. uvarum S6 showed metabolic activities similar to those of non-dried yeast cells, regardless of the storage period. Air-blast dried I. orientalis KMBL5774 showed a noticeable decrease in its ability to decompose malic acid after 3 months of storage at 4 °C.
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39
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Roh HT, Cho SY, So WY, Paik IY, Suh SH. Effects of different fluid replacements on serum HSP70 and lymphocyte DNA damage in college athletes during exercise at high ambient temperatures. JOURNAL OF SPORT AND HEALTH SCIENCE 2016; 5:448-455. [PMID: 30356572 PMCID: PMC6188922 DOI: 10.1016/j.jshs.2015.09.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 01/03/2015] [Accepted: 05/13/2015] [Indexed: 06/08/2023]
Abstract
PURPOSE The aim of this study was to investigate the effects of fluid replacement by water or sports drinks on serum heat shock protein 70 (HSP70) levels and DNA damage during exercise at a high ambient temperature. METHODS Ten male college athletes with an athletic career ranging from 6 to 11 years were recruited from Yonsei University. The subjects ran on a treadmill at 75% of heart rate reserve during 4 different trials: thermoneutral temperature at 18°C (T), high ambient temperature at 32°C without fluid replacement (H), high ambient temperature at 32°C with water replacement (HW), and high ambient temperature at 32°C with sports drink replacement (HS). During each condition, blood samples were collected at the pre-exercise baseline (PEB), immediately after exercise (IAE), and 60 min post-exercise. RESULTS Skin temperature significantly increased during exercise and was significantly higher in H compared to T and HS at IAE. Meanwhile, serum HSP70 was significantly increased in all conditions at IAE compared to PEB and was higher in H compared to T at the former time point. Significantly increased lymphocyte DNA damage (DNA in the tail, tail length, tail moment) was observed in all trials at IAE compared to PEB, and attenuated DNA damage (tail moment) was observed in HS compared to H at IAE. CONCLUSION Acute exercise elevates serum HSP70 and induces lymphocyte DNA damage. Fluid replacement by sports drink during exercise at high ambient temperature can attenuate HSP response and DNA damage by preventing dehydration and reducing thermal stress.
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Affiliation(s)
- Hee-Tae Roh
- Department of Physical Education, Dong-A University, Busan 604-714, Republic of Korea
| | - Su-Youn Cho
- Exercise Physiology Laboratory, Department of Physical Education, Yonsei University, Seoul 120-749, Republic of Korea
| | - Wi-Young So
- Sports and Health Care Major, College of Humanities and Arts, Korea National University of Transportation, Chungju-si 380-702, Republic of Korea
| | - Il-Young Paik
- Exercise Physiology Laboratory, Department of Physical Education, Yonsei University, Seoul 120-749, Republic of Korea
| | - Sang-Hoon Suh
- Exercise Physiology Laboratory, Department of Physical Education, Yonsei University, Seoul 120-749, Republic of Korea
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40
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Matallana E, Aranda A. Biotechnological impact of stress response on wine yeast. Lett Appl Microbiol 2016; 64:103-110. [DOI: 10.1111/lam.12677] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 09/09/2016] [Accepted: 09/29/2016] [Indexed: 01/07/2023]
Affiliation(s)
- E. Matallana
- Institute of Agrochemistry and Food Technology (IATA-CSIC); Paterna Spain
- Department of Biochemistry and Molecular Biology; University of Valencia; Paterna Spain
| | - A. Aranda
- Institute of Agrochemistry and Food Technology (IATA-CSIC); Paterna Spain
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Restoration of growth by manganese in a mutant strain of Escherichia coli lacking most known iron and manganese uptake systems. Biometals 2016; 29:433-50. [PMID: 27003826 DOI: 10.1007/s10534-016-9927-3] [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: 03/13/2016] [Accepted: 03/14/2016] [Indexed: 10/22/2022]
Abstract
The interplay of manganese and iron homeostasis and oxidative stress in Escherichia coli can give important insights into survival of bacteria in the phagosome and under differing iron or manganese bioavailabilities. Here, we characterized a mutant strain devoid of all know iron/manganese-uptake systems relevant for growth in defined medium. Based on these results an exit strategy enabling the cell to cope with iron depletion and use of manganese as an alternative for iron could be shown. Such a strategy would also explain why E. coli harbors some iron- or manganese-dependent iso-enzymes such as superoxide dismutases or ribonucleotide reductases. The benefits for gaining a means for survival would be bought with the cost of less efficient metabolism as indicated in our experiments by lower cell densities with manganese than with iron. In addition, this strain was extremely sensitive to the metalloid gallium but this gallium toxicity can be alleviated by low concentrations of manganese.
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Capece A, Votta S, Guaragnella N, Zambuto M, Romaniello R, Romano P. Comparative study of Saccharomyces cerevisiae wine strains to identify potential marker genes correlated to desiccation stress tolerance. FEMS Yeast Res 2016; 16:fow015. [PMID: 26882930 DOI: 10.1093/femsyr/fow015] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/08/2016] [Indexed: 11/13/2022] Open
Abstract
The most diffused formulation of starter for winemaking is active dry yeast (ADY). ADYs production process is essentially characterized by air-drying stress, a combination of several stresses, including thermal, hyperosmotic and oxidative and cell capacity to counteract such multiple stresses will determine its survival. The molecular mechanisms underlying cell stress response to desiccation have been mostly studied in laboratory and commercial yeast strains, but a growing interest is currently developing for indigenous yeast strains which represent a valuable and alternative source of genetic and molecular biodiversity to be exploited. In this work, a comparative study of different Saccharomyces cerevisiae indigenous wine strains, previously selected for their technological traits, has been carried out to identify potentially relevant genes involved in desiccation stress tolerance. Cell viability was evaluated along desiccation treatment and gene expression was analyzed by real-time PCR before and during the stress. Our data show that the observed differences in individual strain sensitivity to desiccation stress could be associated to specific gene expression over time. In particular, either the basal or the stress-induced mRNA levels of certain genes, such as HSP12, SSA3, TPS1, TPS2, CTT1 and SOD1, result tightly correlated to the strain survival advantage. This study provides a reliable and sensitive method to predict desiccation stress tolerance of indigenous wine yeast strains which could be preliminary to biotechnological applications.
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Affiliation(s)
- Angela Capece
- School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, Potenza 85100, Italy
| | - Sonia Votta
- School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, Potenza 85100, Italy
| | - Nicoletta Guaragnella
- National Research Council, Institute of Biomembranes and Bioenergetics, Bari 70126, Italy School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, Potenza 85100, Italy
| | - Marianna Zambuto
- School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, Potenza 85100, Italy
| | - Rossana Romaniello
- School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, Potenza 85100, Italy
| | - Patrizia Romano
- School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, Potenza 85100, Italy
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Farrés M, Piña B, Tauler R. LC-MS based metabolomics and chemometrics study of the toxic effects of copper on Saccharomyces cerevisiae. Metallomics 2016; 8:790-8. [DOI: 10.1039/c6mt00021e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Copper containing fungicides are used to protect vineyards from fungal infections.
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Affiliation(s)
- Mireia Farrés
- Institute of Environmental Assessment and Water Research (IDAEA)
- Spanish Council for Scientific Research (CSIC)
- 08034 Barcelona, Spain
| | - Benjamí Piña
- Institute of Environmental Assessment and Water Research (IDAEA)
- Spanish Council for Scientific Research (CSIC)
- 08034 Barcelona, Spain
| | - Romà Tauler
- Institute of Environmental Assessment and Water Research (IDAEA)
- Spanish Council for Scientific Research (CSIC)
- 08034 Barcelona, Spain
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Kondo K, Kubo T, Kunieda T. Suggested Involvement of PP1/PP2A Activity and De Novo Gene Expression in Anhydrobiotic Survival in a Tardigrade, Hypsibius dujardini, by Chemical Genetic Approach. PLoS One 2015; 10:e0144803. [PMID: 26690982 PMCID: PMC4686906 DOI: 10.1371/journal.pone.0144803] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 11/24/2015] [Indexed: 12/19/2022] Open
Abstract
Upon desiccation, some tardigrades enter an ametabolic dehydrated state called anhydrobiosis and can survive a desiccated environment in this state. For successful transition to anhydrobiosis, some anhydrobiotic tardigrades require pre-incubation under high humidity conditions, a process called preconditioning, prior to exposure to severe desiccation. Although tardigrades are thought to prepare for transition to anhydrobiosis during preconditioning, the molecular mechanisms governing such processes remain unknown. In this study, we used chemical genetic approaches to elucidate the regulatory mechanisms of anhydrobiosis in the anhydrobiotic tardigrade, Hypsibius dujardini. We first demonstrated that inhibition of transcription or translation drastically impaired anhydrobiotic survival, suggesting that de novo gene expression is required for successful transition to anhydrobiosis in this tardigrade. We then screened 81 chemicals and identified 5 chemicals that significantly impaired anhydrobiotic survival after severe desiccation, in contrast to little or no effect on survival after high humidity exposure only. In particular, cantharidic acid, a selective inhibitor of protein phosphatase (PP) 1 and PP2A, exhibited the most profound inhibitory effects. Another PP1/PP2A inhibitor, okadaic acid, also significantly and specifically impaired anhydrobiotic survival, suggesting that PP1/PP2A activity plays an important role for anhydrobiosis in this species. This is, to our knowledge, the first report of the required activities of signaling molecules for desiccation tolerance in tardigrades. The identified inhibitory chemicals could provide novel clues to elucidate the regulatory mechanisms underlying anhydrobiosis in tardigrades.
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Affiliation(s)
- Koyuki Kondo
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113–0033, Japan
| | - Takeo Kubo
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113–0033, Japan
| | - Takekazu Kunieda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113–0033, Japan
- * E-mail:
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Gamero-Sandemetrio E, Torrellas M, Rábena MT, Gómez-Pastor R, Aranda A, Matallana E. Food-grade argan oil supplementation in molasses enhances fermentative performance and antioxidant defenses of active dry wine yeast. AMB Express 2015; 5:75. [PMID: 26621111 PMCID: PMC4666183 DOI: 10.1186/s13568-015-0159-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Accepted: 11/04/2015] [Indexed: 11/10/2022] Open
Abstract
The tolerance of the yeast Saccharomyces cerevisiae to desiccation is important for the use of this microorganism in the wine industry, since active dry yeast (ADY) is routinely used as starter for must fermentations. Both biomass propagation and dehydration cause cellular oxidative stress, therefore negatively affecting yeast performance. Protective treatments against oxidative damage, such as natural antioxidants, may have important biotechnological implications. In this study we analysed the antioxidant capacity of pure chemical compounds (quercetin, ascorbic acid, caffeic acid, oleic acid, and glutathione) added to molasses during biomass propagation, and we determine several oxidative damage/response parameters (lipid peroxidation, protein carbonylation, protective metabolites and enzymatic activities) to assess their molecular effects. Supplementation with ascorbic, caffeic or oleic acids diminished the oxidative damage associated to ADY production. Based on these results, we tested supplementation of molasses with argan oil, a natural food-grade ingredient rich in these three antioxidants, and we showed that it improved both biomass yield and fermentative performance of ADY. Therefore, we propose the use of natural, food-grade antioxidant ingredients, such as argan oil, in industrial processes involving high cellular oxidative stress, such as the biotechnological production of the dry starter.
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Pérez-Torrado R, Gamero E, Gómez-Pastor R, Garre E, Aranda A, Matallana E. Yeast biomass, an optimised product with myriad applications in the food industry. Trends Food Sci Technol 2015. [DOI: 10.1016/j.tifs.2015.10.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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47
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Yaari M, Doron-Faigenboim A, Koltai H, Salame L, Glazer I. Transcriptome analysis of stress tolerance in entomopathogenic nematodes of the genus Steinernema. Int J Parasitol 2015; 46:83-95. [PMID: 26598027 DOI: 10.1016/j.ijpara.2015.08.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Revised: 08/13/2015] [Accepted: 08/14/2015] [Indexed: 11/16/2022]
Abstract
Entomopathogenic nematodes of the genus Steinernema are effective biological control agents. The infective stage of these parasites can withstand environmental stresses such as desiccation and heat, but the molecular and physiological mechanisms involved in this tolerance are poorly understood. We used 454 pyrosequencing to analyse transcriptome expression in Steinernema spp. that differ in their tolerance to stress. We compared these species, following heat and desiccation treatments, with their non-stressed counterparts. More than 98% of the transcripts found matched homologous sequences in the UniRef90 database, mostly nematode genes (85%). Among those, 60.8% aligned to the vertebrate parasites including Ascaris suum, Loa loa, and Brugia malayi, 23.3% aligned to bacteriovores, mostly from the genus Caenorhabditis, and 1% aligned to EPNs. Analysing gene expression patterns of the stress response showed a large fraction of down-regulated genes in the desiccation-tolerant nematode Steinernema riobrave, whereas a larger fraction of the genes in the susceptible Steinernema feltiae Carmiel and Gvulot strains were up-regulated. We further compared metabolic pathways and the expression of specific stress-related genes. In the more tolerant nematode, more genes were down-regulated whereas in the less tolerant strains, more genes were up-regulated. This phenomenon warrants further exploration of the mechanism governing induction of the down-regulation process. The present study revealed many genes and metabolic cycles that are differentially expressed in the stressed nematodes. Some of those are well known in other nematodes or anhydrobiotic organisms, but several are new and should be further investigated for their involvement in desiccation and heat tolerance. Our data establish a foundation for further exploration of stress tolerance in entomopathogenic nematodes and, in the long term, for improving their ability to withstand suboptimal environmental conditions.
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Affiliation(s)
- Mor Yaari
- Department of Entomology and Nematology, Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
| | - Adi Doron-Faigenboim
- Department of Ornamental Horticulture, Agricultural Research Organization, Israel
| | - Hinanit Koltai
- Department of Ornamental Horticulture, Agricultural Research Organization, Israel
| | - Liora Salame
- Department of Entomology and Nematology, Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
| | - Itamar Glazer
- Department of Entomology and Nematology, Agricultural Research Organization, The Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel.
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Martinez-Moya P, Niehaus K, Alcaíno J, Baeza M, Cifuentes V. Proteomic and metabolomic analysis of the carotenogenic yeast Xanthophyllomyces dendrorhous using different carbon sources. BMC Genomics 2015; 16:289. [PMID: 25887121 PMCID: PMC4404605 DOI: 10.1186/s12864-015-1484-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 03/25/2015] [Indexed: 11/27/2022] Open
Abstract
Background Astaxanthin is a potent antioxidant with increasing biotechnological interest. In Xanthophyllomyces dendrorhous, a natural source of this pigment, carotenogenesis is a complex process regulated through several mechanisms, including the carbon source. X. dendrorhous produces more astaxanthin when grown on a non-fermentable carbon source, while decreased astaxanthin production is observed in the presence of high glucose concentrations. In the present study, we used a comparative proteomic and metabolomic analysis to characterize the yeast response when cultured in minimal medium supplemented with glucose (fermentable) or succinate (non-fermentable). Results A total of 329 proteins were identified from the proteomic profiles, and most of these proteins were associated with carotenogenesis, lipid and carbohydrate metabolism, and redox and stress responses. The metabolite profiles revealed 92 metabolites primarily associated with glycolysis, the tricarboxylic acid cycle, amino acids, organic acids, sugars and phosphates. We determined the abundance of proteins and metabolites of the central pathways of yeast metabolism and examined the influence of these molecules on carotenogenesis. Similar to previous proteomic-stress response studies, we observed modulation of abundance from several redox, stress response, carbohydrate and lipid enzymes. Additionally, the accumulation of trehalose, absence of key ROS response enzymes, an increased abundance of the metabolites of the pentose phosphate pathway and tricarboxylic acid cycle suggested an association between the accumulation of astaxanthin and oxidative stress in the yeast. Moreover, we observed the increased abundance of late carotenogenesis enzymes during astaxanthin accumulation under succinate growth conditions. Conclusions The use of succinate as a carbon source in X. dendrorhous cultures increases the availability of acetyl-CoA for the astaxanthin production compared with glucose, likely reflecting the positive regulation of metabolic enzymes of the tricarboxylic acid and glyoxylate cycles. The high metabolite level generated in this pathway could increase the cellular respiration rate, producing reactive oxygen species, which induces carotenogenesis. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-1484-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Pilar Martinez-Moya
- Departamento de Ciencias Ecológicas, Centro de Biotecnologia, Facultad de Ciencias, Universidad de Chile, Santiago, Chile.
| | - Karsten Niehaus
- Department of Proteome and Metabolome Research, Faculty of Biology, Bielefeld University, Bielefeld, Germany.
| | - Jennifer Alcaíno
- Departamento de Ciencias Ecológicas, Centro de Biotecnologia, Facultad de Ciencias, Universidad de Chile, Santiago, Chile.
| | - Marcelo Baeza
- Departamento de Ciencias Ecológicas, Centro de Biotecnologia, Facultad de Ciencias, Universidad de Chile, Santiago, Chile.
| | - Víctor Cifuentes
- Departamento de Ciencias Ecológicas, Centro de Biotecnologia, Facultad de Ciencias, Universidad de Chile, Santiago, Chile.
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Novel mitochondria-targeted heat-soluble proteins identified in the anhydrobiotic Tardigrade improve osmotic tolerance of human cells. PLoS One 2015; 10:e0118272. [PMID: 25675104 PMCID: PMC4326354 DOI: 10.1371/journal.pone.0118272] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 01/12/2015] [Indexed: 11/20/2022] Open
Abstract
Tardigrades are able to tolerate almost complete dehydration through transition to a metabolically inactive state, called “anhydrobiosis”. Late Embryogenesis Abundant (LEA) proteins are heat-soluble proteins involved in the desiccation tolerance of many anhydrobiotic organisms. Tardigrades, Ramazzottius varieornatus, however, express predominantly tardigrade-unique heat-soluble proteins: CAHS (Cytoplasmic Abundant Heat Soluble) and SAHS (Secretory Abundant Heat Soluble) proteins, which are secreted or localized in most intracellular compartments, except the mitochondria. Although mitochondrial integrity is crucial to ensure cellular survival, protective molecules for mitochondria have remained elusive. Here, we identified two novel mitochondrial heat-soluble proteins, RvLEAM and MAHS (Mitochondrial Abundant Heat Soluble), as potent mitochondrial protectants from Ramazzottius varieornatus. RvLEAM is a group3 LEA protein and immunohistochemistry confirmed its mitochondrial localization in tardigrade cells. MAHS-green fluorescent protein fusion protein localized in human mitochondria and was heat-soluble in vitro, though no sequence similarity with other known proteins was found, and one region was conserved among tardigrades. Furthermore, we demonstrated that RvLEAM protein as well as MAHS protein improved the hyperosmotic tolerance of human cells. The findings of the present study revealed that tardigrade mitochondria contain at least two types of heat-soluble proteins that might have protective roles in water-deficient environments.
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Culleton BA, Lall P, Kinsella GK, Doyle S, McCaffrey J, Fitzpatrick DA, Burnell AM. A role for the Parkinson's disease protein DJ-1 as a chaperone and antioxidant in the anhydrobiotic nematode Panagrolaimus superbus. Cell Stress Chaperones 2015; 20:121-37. [PMID: 25318690 PMCID: PMC4255249 DOI: 10.1007/s12192-014-0531-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 07/16/2014] [Accepted: 07/28/2014] [Indexed: 01/23/2023] Open
Abstract
Mutations in the human DJ-1/PARK7 gene are associated with familial Parkinson's disease. DJ-1 belongs to a large, functionally diverse family with homologues in all biological kingdoms. Several activities have been demonstrated for DJ-1: an antioxidant protein, a redox-regulated molecular chaperone and a modulator of multiple cellular signalling pathways. The majority of functional studies have focussed on human DJ-1 (hDJ-1), but studies on DJ-1 homologues in Drosophila melanogaster, Caenorhabditis elegans, Dugesia japonica and Escherichia coli also provide evidence of a role for DJ-1 as an antioxidant. Here, we show that dehydration is a potent inducer of a dj-1 gene in the anhydrobiotic nematode Panagrolaimus superbus. Our secondary structure and homology modelling analyses shows that recombinant DJ-1 protein from P. superbus (PsuDJ-1.1) is a well-folded protein, which is similar in structure to the hDJ-1. PsuDJ-1.1 is a heat stable protein; with T1/2 unfolding transition values of 76 and 70 °C obtained from both circular dichroism (CD) and Fourier transform infrared spectroscopy (FTIR) measurements respectively. We found that PsuDJ-1.1 is an efficient antioxidant that also functions as a 'holdase' molecular chaperone that can maintain its chaperone function in a reducing environment. In addition to its chaperone activity, PsuDJ-1.1 may also be an important non-enzymatic antioxidant, capable of providing protection to P. superbus from oxidative damage when the nematodes are in a desiccated, anhydrobiotic state.
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Affiliation(s)
- Bridget A. Culleton
- />Department of Biology, National University of Ireland Maynooth, Maynooth, Co Kildare Ireland
- />Megazyme International Ireland, Bray Business Park, Bray, Co Wicklow Ireland
| | - Patrick Lall
- />Department of Chemistry, National University of Ireland Maynooth, Maynooth, Co Kildare Ireland
| | - Gemma K. Kinsella
- />Department of Biology, National University of Ireland Maynooth, Maynooth, Co Kildare Ireland
| | - Sean Doyle
- />Department of Biology, National University of Ireland Maynooth, Maynooth, Co Kildare Ireland
| | - John McCaffrey
- />Department of Chemistry, National University of Ireland Maynooth, Maynooth, Co Kildare Ireland
| | - David A. Fitzpatrick
- />Department of Biology, National University of Ireland Maynooth, Maynooth, Co Kildare Ireland
| | - Ann M. Burnell
- />Department of Biology, National University of Ireland Maynooth, Maynooth, Co Kildare Ireland
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