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Zhang J, Liu Y, Zhou Y, Wang W, Su N, Sun Y. Cloning of a trehalose-6-phosphate synthase gene from Exopalaemon carinicauda and its expression response to bacteria challenge. FISH & SHELLFISH IMMUNOLOGY 2019; 93:387-394. [PMID: 31326590 DOI: 10.1016/j.fsi.2019.07.046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 07/13/2019] [Accepted: 07/17/2019] [Indexed: 06/10/2023]
Abstract
Trehalose, a nonreducing disaccharide, is present in a wide variety of organisms and plays a key role in many organisms under different stress conditions. In the study, the full-length cDNA sequence encoding trehalose-6-phosphate synthase (EcTPS) was obtained from Exopalaemon carinicauda. The complete nucleotide sequence of EcTPS contained a 2532 bp open reading frame (ORF) encoding a putative protein of 843 amino acids. The domain architecture of the deduced EcTPS contained a glycol_transf_20 domain and a trehalose_PPase domain. EcTPS mRNA was predominantly expressed in the hepatopancreas. The expression of EcTPS in the prawns challenged with Vibrio parahaemolyticus and Aeromonas hydrophila changed in a time-dependent manner. The function of EcTPS was also studied by double-strand RNA interference. The results showed that the knock-down of EcTPS increased the mortality of the Vibrio-challenged group and Aeromonas-challenged group compared with the control group. The present study provides some new insight into the immune function of the trehalose-6-phosphate synthase in prawns.
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Affiliation(s)
- Jiquan Zhang
- Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding, 071002, China.
| | - Yujie Liu
- Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding, 071002, China
| | - Yongzhao Zhou
- Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding, 071002, China
| | - Wenzheng Wang
- Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding, 071002, China
| | - Naike Su
- Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding, 071002, China
| | - Yuying Sun
- Laboratory of Zoological Systematics and Application of Hebei Province, College of Life Sciences, Hebei University, Baoding, 071002, China.
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2
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Sun X, Zhang J, Fan ZH, Xiao P, Liu SN, Li RP, Zhu WB, Huang L. MAL62 Overexpression Enhances Freezing Tolerance of Baker's Yeast in Lean Dough by Enhancing Tps1 Activity and Maltose Metabolism. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:8986-8993. [PMID: 31347835 DOI: 10.1021/acs.jafc.9b03790] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Trehalose plays a crucial role in response to freezing stress in baker's yeast. MAL62, a gene involved in the adenosine diphosphoglucose-dependent trehalose synthesis pathway, can increase trehalose content. However, the difference between MAL62-related trehalose synthesis and traditional uridine diphosphoglucose-dependent trehalose synthesis is not well-understood. MAL62 overexpression showed less effect in enhancing intracellular trehalose compared to TPS1 overexpression. However, MAL62 overexpression elicited trehalose synthesis before fermentation with enhanced maltose metabolism and had a similar effect on cell viability after freezing. Furthermore, MAL62 and TPS1 overexpression in the NTH1 deletion background further strengthened freezing tolerance and improved leavening ability. Our results suggest that the enhancement in freezing tolerance by MAL62 overexpression may involve multiple pathways rather than simply enhancing trehalose synthesis. The results reveal valuable insights into the relationship between maltose metabolism and freezing tolerance and may help to develop better yeast strains for enhancing fermentation characteristics of frozen dough.
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Affiliation(s)
- Xi Sun
- Tianjin Engineering Research Center of Agricultural Products Processing , Tianjin 300384 , People's Republic of China
| | - Jun Zhang
- Tianjin Engineering Research Center of Agricultural Products Processing , Tianjin 300384 , People's Republic of China
| | - Zhi-Hua Fan
- Tianjin Engineering Research Center of Agricultural Products Processing , Tianjin 300384 , People's Republic of China
| | - Ping Xiao
- Tianjin Engineering Research Center of Agricultural Products Processing , Tianjin 300384 , People's Republic of China
| | - Shan-Na Liu
- Tianjin Engineering Research Center of Agricultural Products Processing , Tianjin 300384 , People's Republic of China
| | - Rui-Peng Li
- Tianjin Engineering Research Center of Agricultural Products Processing , Tianjin 300384 , People's Republic of China
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3
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Abstract
The genus Zygosaccharomyces is generally associated to wine spoilage in the winemaking industry, since a contamination with strains of this species may produce re-fermentation and CO2 production in sweet wines. At the same time, this capacity might be useful for sparkling wines production, since this species may grow under restrictive conditions, such as high ethanol, low oxygen, and harsh osmotic conditions. The spoilage activity of this genus is also found in fruit juices, soft drinks, salad dressings, and other food products, producing besides package expansion due to gas production, non-desired compounds such as ethanol and esters. Despite these drawbacks, Zygosaccharomyces spp. produces high ethanol and acetoin content in wines and may play an important role as non-Saccharomyces yeasts in differentiated wine products. Control strategies, such as the use of antimicrobial peptides like Lactoferricin B (Lfcin B), the use of dimethyl dicarbonate (DMDC) or non-thermal sterilization techniques may control this spoilage genus in the food industry.
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4
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Sharma A, Sharma SC. Physiological Basis for the Tolerance of Yeast Zygosaccharomyces bisporus to Salt Stress. HAYATI JOURNAL OF BIOSCIENCES 2017. [DOI: 10.1016/j.hjb.2017.11.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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5
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Qi W, Zhang WT, Lu FP. Carbon metabolism and transcriptional variation in response to salt stress in the genome shuffled Candida versatilis and a wild-type salt tolerant yeast strain. RSC Adv 2017. [DOI: 10.1039/c6ra25188a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The carbon metabolism and molecular mechanisms of adaptation response when exposed to conditions causing osmotic stress in strains of a wild-type of Candida versatilis (WT) and S3–5 were investigated.
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Affiliation(s)
- Wei Qi
- Key Laboratory of Industrial Fermentation Microbiology
- Tianjin University of Science & Technology
- Ministry of Education
- Tianjin 300457
- P. R. China
| | - Wen-Tao Zhang
- Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science & Technology
- Ministry of Education
- Tianjin 300457
- P. R. China
| | - Fu-Ping Lu
- Key Laboratory of Industrial Fermentation Microbiology
- Tianjin University of Science & Technology
- Ministry of Education
- Tianjin 300457
- P. R. China
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6
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Yi C, Wang F, Dong S, Li H. Changes of trehalose content and expression of relative genes during the bioethanol fermentation by Saccharomyces cerevisiae. Can J Microbiol 2016; 62:827-835. [PMID: 27510429 DOI: 10.1139/cjm-2015-0832] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Traditionally, trehalose is considered as a protectant to improve the ethanol tolerance of Saccharomyces cerevisiae. In this study, to clarify the changes and roles of trehalose during the bioethanol fermentation, trehalose content and expression of related genes at lag, exponential, and stationary phases (i.e., 2, 8, and 16 h of batch fermentation process) were determined. Although yeast cells at exponential and stationary phase had higher trehalose content than cells at lag phase (P < 0.01), there was no significant difference in trehalose content between exponential and stationary phases (P > 0.05). Moreover, expression of the trehalose degradation-related genes NTH1 and NTH2 decreased at exponential phase in comparison with that at lag phase; compared with cells at lag phase, cells at stationary phase had higher expression of TPS1, ATH1, NTH1, and NTH2 but lower expression of TPS2. During the lag-exponential phase transition, downregulation of NTH1 and NTH2 promoted accumulation of trehalose, and to some extent, trehalose might confer ethanol tolerance to S. cerevisiae before stationary phase. During the exponential-stationary phase transition, upregulation of TPS1 contributed to accumulation of trehalose, and Tps1 protein might be indispensable in yeast cells to withstand ethanol stress at the stationary phase. Moreover, trehalose would be degraded to supply carbon source at stationary phase.
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Affiliation(s)
- Chenfeng Yi
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, P.R. China.,Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, P.R. China
| | - Fenglian Wang
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, P.R. China.,Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, P.R. China
| | - Shijun Dong
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, P.R. China.,Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, P.R. China
| | - Hao Li
- Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, P.R. China.,Beijing Key Laboratory of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, No. 15 Beisanhuan East Road, Chaoyang District, Beijing 100029, P.R. China
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7
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Chen Z, Zheng Z, Yi C, Wang F, Niu Y, Li H. Intracellular metabolic changes in Saccharomyces cerevisiae and promotion of ethanol tolerance during the bioethanol fermentation process. RSC Adv 2016. [DOI: 10.1039/c6ra19254h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
During the batch bioethanol fermentation process, although Saccharomyces cerevisiae cells are challenged by accumulated ethanol, our previous work showed that the ethanol tolerance of S. cerevisiae increased as fermentation time increased.
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Affiliation(s)
- Ze Chen
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Zhou Zheng
- Key Laboratory of Marine Bioactive Substance
- The First Institute of Oceanography
- State Oceanic Administration (SOA)
- Qingdao 266061
- China
| | - Chenfeng Yi
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Fenglian Wang
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Yuanpu Niu
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Hao Li
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
- China
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8
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Ozer Uyar E, Yücel M, Hamamcı H. Cloning and expression of trehalose-6-phosphate synthase 1 from Rhizopus oryzae. J Basic Microbiol 2015; 56:459-68. [PMID: 26567772 DOI: 10.1002/jobm.201500425] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 10/18/2015] [Indexed: 11/11/2022]
Abstract
Trehalose is a reducing disaccharide acting as a protectant against environmental stresses in many organisms. In fungi, Trehalose-6-phosphate synthase 1 (TPS1) plays a key role in the biosynthesis of trehalose. In this study, a full-length cDNA from Rhizopus oryzae encoding TPS1 (designated as RoTPS1) was isolated. The RoTPS1 cDNA is composed of 2505 nucleotides and encodes a protein of 834 amino acids with a molecular mass of 97.8 kDa. The amino acid sequence of RoTPS1 has a relatively high homology with the TPS1s in several other filamentous fungi. RoTPS1 was cloned into Saccharomyces cerevisiae and secretively expressed.
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Affiliation(s)
- Ebru Ozer Uyar
- Arslanbey Vocational School, Kocaeli University, Kocaeli, Turkey.,Department of Biotechnology, Institute of Natural and Applied Sciences, Middle East Technical University, Ankara, Turkey
| | - Meral Yücel
- Department of Biotechnology, Institute of Natural and Applied Sciences, Middle East Technical University, Ankara, Turkey.,Department of Biological Sciences, Faculty of Arts and Sciences, Middle East Technical University, Ankara, Turkey
| | - Haluk Hamamcı
- Department of Biotechnology, Institute of Natural and Applied Sciences, Middle East Technical University, Ankara, Turkey.,Department of Food Engineering, Faculty of Engineering, Middle East Technical University, Ankara, Turkey
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9
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Production of Kluyveromyces spp. and environmental tolerance induction against Aspergillus flavus. ANN MICROBIOL 2014. [DOI: 10.1007/s13213-013-0726-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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10
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Ames RM, Money D, Lovell SC. Inferring gene family histories in yeast identifies lineage specific expansions. PLoS One 2014; 9:e99480. [PMID: 24921666 PMCID: PMC4055711 DOI: 10.1371/journal.pone.0099480] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 05/15/2014] [Indexed: 11/24/2022] Open
Abstract
The complement of genes found in the genome is a balance between gene gain and gene loss. Knowledge of the specific genes that are gained and lost over evolutionary time allows an understanding of the evolution of biological functions. Here we use new evolutionary models to infer gene family histories across complete yeast genomes; these models allow us to estimate the relative genome-wide rates of gene birth, death, innovation and extinction (loss of an entire family) for the first time. We show that the rates of gene family evolution vary both between gene families and between species. We are also able to identify those families that have experienced rapid lineage specific expansion/contraction and show that these families are enriched for specific functions. Moreover, we find that families with specific functions are repeatedly expanded in multiple species, suggesting the presence of common adaptations and that these family expansions/contractions are not random. Additionally, we identify potential specialisations, unique to specific species, in the functions of lineage specific expanded families. These results suggest that an important mechanism in the evolution of genome content is the presence of lineage-specific gene family changes.
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Affiliation(s)
- Ryan M. Ames
- Computational and Evolutionary Biology, Faculty of Life Sciences, The University of Manchester, Manchester, United Kingdom
| | - Daniel Money
- Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, Kansas, United States of America
| | - Simon C. Lovell
- Computational and Evolutionary Biology, Faculty of Life Sciences, The University of Manchester, Manchester, United Kingdom
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11
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Song XS, Li HP, Zhang JB, Song B, Huang T, Du XM, Gong AD, Liu YK, Feng YN, Agboola RS, Liao YC. Trehalose 6-phosphate phosphatase is required for development, virulence and mycotoxin biosynthesis apart from trehalose biosynthesis in Fusarium graminearum. Fungal Genet Biol 2013; 63:24-41. [PMID: 24291007 DOI: 10.1016/j.fgb.2013.11.005] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Revised: 11/19/2013] [Accepted: 11/20/2013] [Indexed: 12/11/2022]
Abstract
Trehalose 6-phosphate synthase (TPS1) and trehalose 6-phosphate phosphatase (TPS2) are required for trehalose biosynthesis in yeast and filamentous fungi, including Fusarium graminearum. Three null mutants Δtps1, Δtps2 and Δtps1-Δtps2, each carrying either a single deletion of TPS1 or TPS2 or a double deletion of TPS1-TPS2, were generated from a toxigenic F. graminearum strain and were not able to synthesize trehalose. In contrast to its reported function in yeasts and filamentous fungi, TPS1 appeared dispensable for development and virulence. However, deletion of TPS2 abolished sporulation and sexual reproduction; it also altered cell polarity and ultrastructure of the cell wall in association with reduced chitin biosynthesis. The cell polarity alteration was exhibited as reduced apical growth and increased lateral growth and branching with increased hyphal and cell wall widths. Moreover, the TPS2-deficient strain displayed abnormal septum development and nucleus distribution in its conidia and vegetative hyphae. The Δtps2 mutant also had 62% lower mycelial growth on potato dextrose agar and 99% lower virulence on wheat compared with the wild-type. The Δtps1, Δtps2 and Δtps1-Δtps2 mutants synthesized over 3.08-, 7.09- and 2.47-fold less mycotoxins, respectively, on rice culture compared with the wild-type. Comparative transcriptome analysis revealed that the Δtps1, Δtps2 and Δtps1-Δtps2 mutants had 486, 1885 and 146 genotype-specific genes, respectively, with significantly changed expression profiles compared with the wild-type. Further dissection of this pathway will provide new insights into regulation of fungal development, virulence and trichothecene biosynthesis.
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Affiliation(s)
- Xiu-Shi Song
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - He-Ping Li
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People's Republic of China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Jing-Bo Zhang
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Bo Song
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Tao Huang
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People's Republic of China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Xiao-Min Du
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - An-Dong Gong
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Yi-Ke Liu
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People's Republic of China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Yan-Ni Feng
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People's Republic of China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Rebecca S Agboola
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Yu-Cai Liao
- Molecular Biotechnology Laboratory of Triticeae Crops, Huazhong Agricultural University, Wuhan 430070, People's Republic of China; College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, People's Republic of China; National Center of Plant Gene Research (Wuhan), Wuhan 430070, People's Republic of China.
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12
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The changes in Tps1 activity, trehalose content and expression of TPS1 gene in the psychrotolerant yeast Guehomyces pullulans 17-1 grown at different temperatures. Extremophiles 2013; 17:241-9. [DOI: 10.1007/s00792-013-0511-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Accepted: 01/04/2013] [Indexed: 11/25/2022]
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13
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Zhang J, Wang J, Li F, Sun Y, Yang C, Xiang J. A trehalose-6-phosphate synthase gene from Chinese shrimp, Fenneropenaeus chinensis. Mol Biol Rep 2012; 39:10219-25. [PMID: 23053931 DOI: 10.1007/s11033-012-1897-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Accepted: 09/30/2012] [Indexed: 11/25/2022]
Abstract
Trehalose is an important disaccharide and plays a key role in many organisms under different stress conditions. In the study, a gene (FcTPS) encoded trehalose-6-phosphate synthase was reported from Chinese shrimp, Fenneropenaeus chinensis. The full-length cDNA of FcTPS is 3,281 bp including a poly A-tail of 20 bp, encoding a putative protein of 844 amino acids. The predicted protein contains a glycol_transf_20 domain and a trehalose_PPase domain. Genomic structure of FcTPS is composed of three exons with 192, 157 and 2,912 bp and two introns with 1,057 and 568 bp. In the second intron, four different SSRs are found. Transcripts of FcTPS gene are constitutively expressed in various tissues, with strongest level in hepatopancreas. After the shrimp were challenged with WSSV or Vibrio and the expression of FcTPS in hepatopancreas were analyzed using real-time PCR, the result showed that FcTPS transcript was down-regulated significantly in response to the challenge of Vibro at the early of 5 h post-challenge and then up-regulated significantly at 14 h. In addition, the expression of FcTPS showed the same result after the shrimp were challenged with WSSV. These results provide some new information about the tissue distribution, expression profiles and potential function of the trehalose-6-phosphate synthase in shrimp.
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Affiliation(s)
- Jiquan Zhang
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.
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14
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Genetics and Regulation of Glycogen and Trehalose Metabolism in Saccharomyces cerevisiae. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/978-3-642-21467-7_2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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15
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Liu J, Wisniewski M, Droby S, Tian S, Hershkovitz V, Tworkoski T. Effect of heat shock treatment on stress tolerance and biocontrol efficacy of Metschnikowia fructicola. FEMS Microbiol Ecol 2011; 76:145-55. [DOI: 10.1111/j.1574-6941.2010.01037.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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16
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Zhang Y, Zhang T, Chi Z, Wang JM, Liu GL, Chi ZM. Conversion of cassava starch to trehalose by Saccharomycopsis fibuligera A11 and purification of trehalose. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2009.10.059] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Cai Z, Peng G, Cao Y, Liu Y, Jin K, Xia Y. Trehalose-6-phosphate synthase 1 from Metarhizium anisopliae: clone, expression and properties of the recombinant. J Biosci Bioeng 2009; 107:499-505. [PMID: 19393547 DOI: 10.1016/j.jbiosc.2009.01.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2008] [Revised: 12/25/2008] [Accepted: 01/08/2009] [Indexed: 11/25/2022]
Abstract
Trehalose, an important component in fungal spores, is a disaccharide which protects against several environmental stresses, such as heat, desiccation, salt. Trehalose-6-phosphate synthase 1 (TPS1) is a subunit of trehalose synthase complex in fungi; it plays a key role in the biosynthesis of trehalose. In this study, a full-length cDNA from Metarhizium anisopliae encoding TPS1 (designated as MaTPS1) was isolated. The MaTPS1 cDNA is composed of 1836 nucleotides encoding a protein of 517 amino acids with a molecular mass of 58 kDa. The amino acid sequence has a relatively high homology with the TPS1s in several other filamentous fungi. Southern blot analysis showed that MaTPS1 gene occurs as a single copy in the M. anisopliae genome. And MaTPS1 was cloned into Pichia pastoris KM71 and secretively expressed with a histamine tag to facilitate a rapid purification of recombinant MaTPS1 (designated reTPS1). The properties of reTPS1 were examined. The K(m) value of reTPS1 for UDP-glucose and glucose-6-phosphate was 9.6 mM and 3.9 mM, respectively, and the optimal pH and temperature were about 6.5 and 40 degrees C. The enzyme was highly specific to glucose-6-phosphate for glucosyl acceptor, and its activity decreased rapidly as the concentrations of phosphate increased. The expression system will provide sufficient amounts of reTPS1 for future structural characterization of the protein and use for further investigation of MaTPS1's function.
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Affiliation(s)
- Zejun Cai
- Genetic Engineering Research Center, Chongqing University, Chongqing Engineering Research Center for Fungal Insecticides and Key Lab of Functional Gene and Regulation Technologies under Chongqing Municipal Education Commission, Chongqing 400030, PR China
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18
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Li BQ, Tian SP. Effect of intracellular trehalose in Cryptococcus laurentii and exogenous lyoprotectants on its viability and biocontrol efficacy on Penicillium expansum in apple fruit. Lett Appl Microbiol 2007; 44:437-42. [PMID: 17397484 DOI: 10.1111/j.1472-765x.2006.02080.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS To improve viability and biocontrol efficacy of Cryptococcus laurentii after freeze drying and in subsequent storage. METHODS AND RESULTS Viability of C. laurentii was improved after freeze drying and in subsequent storage at 4 or 25 degrees C by using skimmed milk (SM) and sugars (glucose, galactose, sucrose and trehalose) as protectants. Sugars and SM mixed together showed better protection than when they were used separately. Citric acid used as carbon source could induce accumulation of intracellular trehalose in the yeast. The yeast cells with high trehalose level (HT cells) had higher viability than those with low trehalose level (LT cells) after freeze drying and storage for 90 days. After storage for 90 days at 4 degrees C, the HT cells plus SM and sugars as protectant showed a similar biocontrol effect against blue mould rot in apple fruit caused by Penicillium expansum as fresh cells. CONCLUSIONS Increasing intracellular trehalose content of C. laurentii and adding exogenous protectant (sugars + SM) could improve its viability and maintain its biocontrol efficacy. SIGNIFICANCE AND IMPACT OF THE STUDY The results have a potential value for commercial application of C. laurentii.
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Affiliation(s)
- B Q Li
- Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, China
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Liang LK, Wang XK, Zhu KL, Chi ZM. Trehalose synthesis in Saccharomycopsis fibuligera does not respond to stress treatments. Appl Microbiol Biotechnol 2007; 74:1084-91. [PMID: 17086411 DOI: 10.1007/s00253-006-0688-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2006] [Revised: 09/14/2006] [Accepted: 09/18/2006] [Indexed: 10/24/2022]
Abstract
Synthesis of trehalose in Saccharomycopsis fibuligera sdu under various stress conditions was investigated. Neither the activation of trehalose-6-phosphate synthase (SfTPS1) nor the change in trehalose content was observed under stress exposure of S. fibuligera sdu cells. The results of reverse transcription polymerase chain reaction, which was performed with the specific primers designed to target the SfTPS1 gene fragment cloned from this strain, also showed that all stress treatments did not increase the expression of SfTPS1 gene. These results demonstrated that synthesis of trehalose in response to stress conditions in S. fibuligera sdu clearly differs from that of Saccharomyces cerevisiae and most other fungi. The phylogenetic analysis of the amino acid sequence deduced from the SfTPS1 gene fragment showed that the SfTPS1 sequence formed a separate family that was far related to S. cerevisiae TPS1. The yeast strain, which can accumulate a large amount of trehalose under normal growth conditions, has many applications and TPS1 gene in such strain may have unique use in transgenic organisms.
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Affiliation(s)
- L K Liang
- Department of Biochemistry, Yantai University, Qingquan Road, No.30, Yantai 264005, China.
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Liang LK, Wang XK, Zhu KL, Chi ZM. Trehalose accumulation in a high-trehalose-accumulating mutant of Saccharomycopsis fibuligera sdu does not respond to stress treatments. BIOCHEMISTRY (MOSCOW) 2007; 71:1291-7. [PMID: 17223779 DOI: 10.1134/s0006297906120017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The isolation of high-trehalose-accumulating mutant A11 from Saccharomycopsis fibuligera sdu has been previously described. In this paper, accumulation of trehalose under various stress conditions in S. fibuligera A11 was investigated. Neither activation of trehalose-6-phosphate synthase (SfTps1) nor change in trehalose content was observed under stress exposure of S. fibuligera A11 cells. A fragment of the Sftps1 gene in this strain was also cloned by degenerate PCR using the CoDeHOP strategy and multiply-aligned Tps1 sequences. This sequence allowed us to investigate the expression of the Sftps1 gene, which was also kept constant under the various stress conditions. Altogether, these results indicate that trehalose metabolism in S. fibuligera A11 in response to stress conditions clearly differs from that of Saccharomyces cerevisiae and most other fungi. The expression of the Sftps1 gene was not responsive to different stress treatments.
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Affiliation(s)
- L K Liang
- Department of Biochemistry, Yantai University, Yantai, 264005, China.
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Li BQ, Tian SP. Effects of trehalose on stress tolerance and biocontrol efficacy of Cryptococcus laurentii. J Appl Microbiol 2006; 100:854-61. [PMID: 16553742 DOI: 10.1111/j.1365-2672.2006.02852.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS To investigate the effects of internal trehalose on viability and biocontrol efficacy of antagonistic yeast Cryptococcus laurentii under stresses of low temperature (LT), controlled atmosphere (CA) and freeze drying. METHODS AND RESULTS The content of trehalose in C. laurentii was increased by culturing the yeast in trehalose-containing medium. Compared with yeast cells with low trehalose level, the yeast cells with high level of internal trehalose not only obtained higher viability, but also showed higher population and better biocontrol efficacy against Penicillium expansum on apple fruit both at 1 degrees C and in CA condition (5% O(2), 5% CO(2), 1 degrees C). After freeze drying, survival of the yeast with high trehalose level was markedly increased when stored at 25 degrees C for 0, 15 and 30 days. Meanwhile, high integrity of plasma membrane was detected in the freeze-dried yeast with high trehalose level by propidium iodide staining. CONCLUSIONS Induced accumulation of internal trehalose could improve viability and biocontrol efficacy of C. laurentii under stresses of LT and CA. Moreover, survival of the yeast was also increased as internal trehalose accumulation after freeze drying, and one of the reasons might be that trehalose gave an effective protection to plasma membrane. SIGNIFICANCE AND IMPACT OF THE STUDY The results of this experiment show a promising way to improve the biocontrol performance of antagonistic yeasts under the commercial conditions.
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Affiliation(s)
- B Q Li
- Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, China
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Properties of trehalose-6-phosphate synthase fromSaccharomycopsis fibuligera. ANN MICROBIOL 2006. [DOI: 10.1007/bf03175012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Abstract
The fungal spoilage of ingredients of food manufacture is an economic problem, often causes product loss and may constitute a health hazard. To effectively combat fungal food spoilage, a mechanistic understanding of tolerance for, and adaptation to, the preservation method used is crucial. Both are dependent on the genetic make-up and growth history of the organism. In the post-genomic era we are arriving at a situation in which, in the model organism Saccharomyces cerevisiae, physiological data, classical molecular biology and whole-genome responses can be combined to obtain explanatory and predictive models for growth. For food spoilage fungi we have not yet reached such a level of understanding, but we may use the knowledge gained for S. cerevisiae for the prevention of spoilage.
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Affiliation(s)
- Gertien J Smits
- Department of Molecular Biology and Microbial Food Safety, Swammerdam Institute for Life Sciences, Nieuwe Achtergracht 166, 1018 WV, Amsterdam, The Netherlands
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Current awareness on yeast. Yeast 2003; 20:1151-8. [PMID: 14598808 DOI: 10.1002/yea.949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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