1
|
Li T, Kim D, Lee J. NADPH Oxidase Gene, FgNoxD, Plays a Critical Role in Development and Virulence in Fusarium graminearum. Front Microbiol 2022; 13:822682. [PMID: 35308369 PMCID: PMC8928025 DOI: 10.3389/fmicb.2022.822682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 02/01/2022] [Indexed: 12/01/2022] Open
Abstract
NADPH oxidase is an enzyme that generates reactive oxygen species from oxygen and NADPH and is highly conserved in eukaryotes. In Fusarium graminearum, a series of different Nox enzymes have been identified. NoxA is involved in sexual development and ascospore production and, like NoxB, also contributes to pathogenicity. Both NoxA and NoxB are regulated by the subunit NoxR, whereas NoxC is usually self-regulated by EF-hand motifs found on the enzyme. In this study, we characterized another NADPH oxidase in F. graminearum, FgNoxD. In the FgNoxD deletion mutant, vegetative growth and conidia production were reduced, while sexual development was totally abolished. The FgNoxD deletion mutant also showed reduced resistance to cell wall perturbing agents; cell membrane inhibitors; and osmotic, fungicide, cold, and extracellular oxidative stress, when compared to the wild type. Moreover, in comparison to the wild type, the FgNoxD deletion mutant exhibited reduced virulence against the host plant. The FgNoxD deletion mutant produced less deoxynivalenol than the wild type, and the Tri5 and Tri6 gene expression was also downregulated. In conclusion, our findings show that FgNoxD is involved in the survival against various stresses, conidiation, sexual development, and virulence, highlighting this enzyme as a new target to control the disease caused by F. graminearum.
Collapse
Affiliation(s)
- Taiying Li
- Department of Applied Biology, Dong-A University, Busan, South Korea
| | - Dohyun Kim
- Department of Applied Biology, Dong-A University, Busan, South Korea
| | - Jungkwan Lee
- Department of Applied Biology, Dong-A University, Busan, South Korea
| |
Collapse
|
2
|
Cellular Calcium Levels Influenced by NCA-2 Impact Circadian Period Determination in Neurospora. mBio 2021; 12:e0149321. [PMID: 34182778 PMCID: PMC8262947 DOI: 10.1128/mbio.01493-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Intracellular calcium signaling has been implicated in the control of a variety of circadian processes in animals and plants, but its role in microbial clocks has remained largely cryptic. To examine the role of intracellular Ca2+ in the Neurospora clock, we screened mutants with knockouts of calcium transporter genes and identified a gene encoding a calcium exporter, nca-2, uniquely as having significant period effects. The loss of NCA-2 results in an increase in the cytosolic calcium level, and this leads to hyper-phosphorylation of core clock components, FRQ and WC-1, and a short period, as measured by both the core oscillator and the overt clock. Genetic analyses showed that mutations in certain frq phospho-sites and in Ca2+-calmodulin-dependent kinase 2 (camk-2) are epistatic to nca-2 in controlling the pace of the oscillator. These data are consistent with a model in which elevated intracellular Ca2+ leads to the increased activity of CAMK-2, leading to enhanced FRQ phosphorylation, accelerated closure of the circadian feedback loop, and a shortened circadian period length. At a mechanistic level, some CAMKs undergo more auto-phosphorylations in the Δnca-2 mutant, consistent with high calcium levels in the Δnca-2 mutant influencing the enzymatic activities of CAMKs. NCA-2 interacts with multiple proteins, including CSP-6, a protein known to be required for circadian output. Most importantly, the expression of nca-2 is circadian clock-controlled at both the transcriptional and translational levels, and this in combination with the period effects seen in strains lacking NCA-2 firmly places calcium signaling within the larger circadian system, where it acts as both an input to and an output from the core clock.
Collapse
|
3
|
Alao JP, Legon L, Rallis C. Crosstalk between the mTOR and DNA Damage Response Pathways in Fission Yeast. Cells 2021; 10:cells10020305. [PMID: 33540829 PMCID: PMC7913062 DOI: 10.3390/cells10020305] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 01/27/2021] [Accepted: 01/28/2021] [Indexed: 12/14/2022] Open
Abstract
Cells have developed response systems to constantly monitor environmental changes and accordingly adjust growth, differentiation, and cellular stress programs. The evolutionarily conserved, nutrient-responsive, mechanistic target of rapamycin signaling (mTOR) pathway coordinates basic anabolic and catabolic cellular processes such as gene transcription, protein translation, autophagy, and metabolism, and is directly implicated in cellular and organismal aging as well as age-related diseases. mTOR mediates these processes in response to a broad range of inputs such as oxygen, amino acids, hormones, and energy levels, as well as stresses, including DNA damage. Here, we briefly summarize data relating to the interplays of the mTOR pathway with DNA damage response pathways in fission yeast, a favorite model in cell biology, and how these interactions shape cell decisions, growth, and cell-cycle progression. We, especially, comment on the roles of caffeine-mediated DNA-damage override. Understanding the biology of nutrient response, DNA damage and related pharmacological treatments can lead to the design of interventions towards improved cellular and organismal fitness, health, and survival.
Collapse
Affiliation(s)
- John-Patrick Alao
- ZEAB Therapeutic, University of East London, Stratford Campus, Water Lane, Stratford, London E15 4LZ, UK;
| | - Luc Legon
- School of Health, Sport and Bioscience, University of East London, Stratford Campus, Water Lane, Stratford, London E15 4LZ, UK;
| | - Charalampos Rallis
- School of Life Sciences, University of Essex, Wivenhoe Park, Colchester CO4 3SQ, UK
- Correspondence:
| |
Collapse
|
4
|
Takenaka K, Tanabe T, Kawamukai M, Matsuo Y. Overexpression of the transcription factor Rst2 in Schizosaccharomyces pombe indicates growth defect, mitotic defects, and microtubule disorder. Biosci Biotechnol Biochem 2018; 82:247-257. [PMID: 29316864 DOI: 10.1080/09168451.2017.1415126] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In Schizosaccharomyces pombe, the transcription factor Rst2 regulates ste11 in meiosis and fbp1 in glucogenesis downstream of the cyclic adenosine monophosphate (cAMP)-dependent protein kinase (PKA) pathway. Here, we demonstrate that Rst2 regulates additional cellular events. Overexpressed Rst2 elevated the frequency of oval, bent, branched, septated, and multi-septated cells. Cells showed normal nuclear divisions but exhibited abnormal nuclear organization at low frequency. In oval cells, microtubules were curved but they were rescued by the deletion of mal3. Since growth defect was not rescued by mal3 deletion, we argue that it is regulated independently. Loss of functional Pka1 exaggerated growth defect upon Rst2 overexpression because its downregulation by Pka1 was lost. Overexpression of Rst2 also caused sensitivity to KCl and CaCl2. These findings suggest that, in addition to meiosis and glucogenesis, Rst2 is involved in cellular events such as regulation of cell growth, cell morphology, mitosis progression, microtubules structure, nuclear structure, and stress response.
Collapse
Affiliation(s)
- Kouhei Takenaka
- a Department of Life Science and Biotechnology, Faculty of Life and Environmental Science , Shimane University , Matsue , Japan
| | - Takuma Tanabe
- a Department of Life Science and Biotechnology, Faculty of Life and Environmental Science , Shimane University , Matsue , Japan
| | - Makoto Kawamukai
- a Department of Life Science and Biotechnology, Faculty of Life and Environmental Science , Shimane University , Matsue , Japan
| | - Yasuhiro Matsuo
- a Department of Life Science and Biotechnology, Faculty of Life and Environmental Science , Shimane University , Matsue , Japan
| |
Collapse
|
5
|
Lee ME, Rusin SF, Jenkins N, Kettenbach AN, Moseley JB. Mechanisms Connecting the Conserved Protein Kinases Ssp1, Kin1, and Pom1 in Fission Yeast Cell Polarity and Division. Curr Biol 2017; 28:84-92.e4. [PMID: 29249658 DOI: 10.1016/j.cub.2017.11.034] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 10/18/2017] [Accepted: 11/15/2017] [Indexed: 12/11/2022]
Abstract
Connections between the protein kinases that function within complex cell polarity networks are poorly understood. Rod-shaped fission yeast cells grow in a highly polarized manner, and genetic screens have identified many protein kinases, including the CaMKK-like Ssp1 and the MARK/PAR-1 family kinase Kin1, that are required for polarized growth and cell shape, but their functional mechanisms and connections have been unknown [1-5]. We found that Ssp1 promotes cell polarity by phosphorylating the activation loop of Kin1. Kin1 regulates cell polarity and cytokinesis through unknown mechanisms [4-7]. We performed a large-scale phosphoproteomic screen and found that Kin1 phosphorylates itself and Pal1 to promote growth at cell tips, and these proteins are interdependent for localization to growing cell tips. Additional Kin1 substrates for cell polarity and cytokinesis (Tea4, Mod5, Cdc15, and Cyk3) were also phosphorylated by a second kinase, the DYRK family member Pom1 [8]. Kin1 and Pom1 were enriched at opposite ends of growing cells, and they phosphorylated largely non-overlapping sites on shared substrates. Combined inhibition of both Kin1and Pom1 led to synthetic defects in their shared substrates Cdc15 and Cyk3, confirming a non-redundant functional connection through shared substrates. These findings uncover a new Ssp1-Kin1 signaling pathway, and define its functional and mechanistic connection with Pom1 signaling for cell polarity and cytokinesis. These kinases are conserved in many eukaryotes including humans, suggesting that similar connections and mechanisms might operate in a broad range of cells.
Collapse
Affiliation(s)
- Mid Eum Lee
- Department of Biochemistry and Cell Biology, The Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA
| | - Scott F Rusin
- Department of Biochemistry and Cell Biology, The Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA
| | - Nicole Jenkins
- Department of Biochemistry and Cell Biology, The Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA; Norris Cotton Cancer Center, The Geisel School of Medicine at Dartmouth, Lebanon, NH 03756, USA
| | - Arminja N Kettenbach
- Department of Biochemistry and Cell Biology, The Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA; Norris Cotton Cancer Center, The Geisel School of Medicine at Dartmouth, Lebanon, NH 03756, USA
| | - James B Moseley
- Department of Biochemistry and Cell Biology, The Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA.
| |
Collapse
|
6
|
Schutt KL, Moseley JB. Transient activation of fission yeast AMPK is required for cell proliferation during osmotic stress. Mol Biol Cell 2017; 28:1804-1814. [PMID: 28515144 PMCID: PMC5491188 DOI: 10.1091/mbc.e17-04-0235] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 05/05/2017] [Accepted: 05/09/2017] [Indexed: 01/05/2023] Open
Abstract
Transient activation of the cellular energy sensor AMPK during osmotic stress requires its energy-sensing subunit. Cellular ATP levels decrease during osmotic stress, which triggers energy stress, which in turn requires dynamic activation of AMPK. The heterotrimeric kinase AMPK acts as an energy sensor to coordinate cell metabolism with environmental status in species from yeast through humans. Low intracellular ATP leads to AMPK activation through phosphorylation of the activation loop within the catalytic subunit. Other environmental stresses also activate AMPK, but it is unclear whether cellular energy status affects AMPK activation under these conditions. Fission yeast AMPK catalytic subunit Ssp2 is phosphorylated at Thr-189 by the upstream kinase Ssp1 in low-glucose conditions, similar to other systems. Here we find that hyperosmotic stress induces strong phosphorylation of Ssp2-T189 by Ssp1. Ssp2-pT189 during osmotic stress is transient and leads to transient regulation of AMPK targets, unlike sustained activation by low glucose. Cells lacking this activation mechanism fail to proliferate after hyperosmotic stress. Activation during osmotic stress requires energy sensing by AMPK heterotrimer, and osmotic stress leads to decreased intracellular ATP levels. We observed mitochondrial fission during osmotic stress, but blocking fission did not affect AMPK activation. Stress-activated kinases Sty1 and Pmk1 did not promote AMPK activation but contributed to subsequent inactivation. Our results show that osmotic stress induces transient energy stress, and AMPK activation allows cells to manage this energy stress for proliferation in new osmotic states.
Collapse
Affiliation(s)
- Katherine L Schutt
- Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth, Hanover, NH 03755
| | - James B Moseley
- Department of Biochemistry and Cell Biology, Geisel School of Medicine at Dartmouth, Hanover, NH 03755
| |
Collapse
|
7
|
Deng L, Lee ME, Schutt KL, Moseley JB. Phosphatases Generate Signal Specificity Downstream of Ssp1 Kinase in Fission Yeast. Mol Cell Biol 2017; 37:e00494-16. [PMID: 28223368 PMCID: PMC5477550 DOI: 10.1128/mcb.00494-16] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 10/10/2016] [Accepted: 02/13/2017] [Indexed: 11/20/2022] Open
Abstract
AMPK-related protein kinases (ARKs) coordinate cell growth, proliferation, and migration with environmental status. It is unclear how specific ARKs are activated at specific times. In the fission yeast Schizosaccharomyces pombe, the CaMKK-like protein kinase Ssp1 promotes cell cycle progression by activating the ARK Cdr2 according to cell growth signals. Here, we demonstrate that Ssp1 activates a second ARK, Ssp2/AMPKα, for cell proliferation in low environmental glucose. Ssp1 activates these two related targets by the same biochemical mechanism: direct phosphorylation of a conserved residue in the activation loop (Cdr2-T166 and Ssp2-T189). Despite a shared upstream kinase and similar phosphorylation sites, Cdr2 and Ssp2 have distinct regulatory input cues and distinct functional outputs. We investigated this specificity and found that distinct protein phosphatases counteract Ssp1 activity toward its different substrates. We identified the PP6 family phosphatase Ppe1 as the primary phosphatase for Ssp2-T189 dephosphorylation. The phosphatase inhibitor Sds23 acts upstream of PP6 to regulate Ssp2-T189 phosphorylation in a manner that depends on energy but not on the intact AMPK heterotrimer. In contrast, Cdr2-T166 phosphorylation is regulated by protein phosphatase 2A but not by the Sds23-PP6 pathway. Thus, our study provides a phosphatase-driven mechanism to induce specific physiological responses downstream of a master protein kinase.
Collapse
Affiliation(s)
- Lin Deng
- Department of Biochemistry and Cell Biology, The Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
| | - Mid Eum Lee
- Department of Biochemistry and Cell Biology, The Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
| | - Katherine L Schutt
- Department of Biochemistry and Cell Biology, The Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
| | - James B Moseley
- Department of Biochemistry and Cell Biology, The Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA
| |
Collapse
|
8
|
Nguyen TTT, Lim YJ, Fan MHM, Jackson RA, Lim KK, Ang WH, Ban KHK, Chen ES. Calcium modulation of doxorubicin cytotoxicity in yeast and human cells. Genes Cells 2016; 21:226-40. [DOI: 10.1111/gtc.12346] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 11/29/2015] [Indexed: 12/16/2022]
Affiliation(s)
- Thi Thuy Trang Nguyen
- Department of Biochemistry; Yong Loo Lin School of Medicine; National University of Singapore; Singapore
- National University Health System; Singapore
| | - Ying Jun Lim
- Department of Biochemistry; Yong Loo Lin School of Medicine; National University of Singapore; Singapore
- National University Health System; Singapore
| | - Melanie Hui Min Fan
- Department of Biochemistry; Yong Loo Lin School of Medicine; National University of Singapore; Singapore
- National University Health System; Singapore
| | - Rebecca A. Jackson
- Department of Biochemistry; Yong Loo Lin School of Medicine; National University of Singapore; Singapore
| | - Kim Kiat Lim
- Department of Biochemistry; Yong Loo Lin School of Medicine; National University of Singapore; Singapore
- National University Health System; Singapore
| | - Wee Han Ang
- Department of Chemistry; Faculty of Science; National University of Singapore; Singapore
| | - Kenneth Hon Kim Ban
- Department of Biochemistry; Yong Loo Lin School of Medicine; National University of Singapore; Singapore
- National University Health System; Singapore
| | - Ee Sin Chen
- Department of Biochemistry; Yong Loo Lin School of Medicine; National University of Singapore; Singapore
- National University Health System; Singapore
- NUS Graduate School of Science & Engineering; National University of Singapore; Singapore
- NUS Synthetic Biology for Clinical and Technological Innovation (SynCTI); Life Sciences Institute; National University of Singapore; Singapore
| |
Collapse
|
9
|
Masuda F, Ishii M, Mori A, Uehara L, Yanagida M, Takeda K, Saitoh S. Glucose restriction induces transient G2 cell cycle arrest extending cellular chronological lifespan. Sci Rep 2016; 6:19629. [PMID: 26804466 PMCID: PMC4726166 DOI: 10.1038/srep19629] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 12/16/2015] [Indexed: 01/15/2023] Open
Abstract
While glucose is the fundamental source of energy in most eukaryotes, it is not always abundantly available in natural environments, including within the human body. Eukaryotic cells are therefore thought to possess adaptive mechanisms to survive glucose-limited conditions, which remain unclear. Here, we report a novel mechanism regulating cell cycle progression in response to abrupt changes in extracellular glucose concentration. Upon reduction of glucose in the medium, wild-type fission yeast cells undergo transient arrest specifically at G2 phase. This cell cycle arrest is dependent on the Wee1 tyrosine kinase inhibiting the key cell cycle regulator, CDK1/Cdc2. Mutant cells lacking Wee1 are not arrested at G2 upon glucose limitation and lose viability faster than the wild-type cells under glucose-depleted quiescent conditions, suggesting that this cell cycle arrest is required for extension of chronological lifespan. Our findings indicate the presence of a novel cell cycle checkpoint monitoring glucose availability, which may be a good molecular target for cancer therapy.
Collapse
Affiliation(s)
- Fumie Masuda
- Institute of Life Science, Kurume University, Hyakunen-Khoen 1-1, Kurume, Fukuoka 839-0864, Japan
| | - Mahiro Ishii
- Department of Biology, Faculty of Science and Engineering, Konan University, 8-9-1 Okamoto, Higashinada-ku, Kobe 658-8501, Japan
| | - Ayaka Mori
- Okinawa Institute of Science and Technology Graduate School, Tancha 1919-1, Onna, Okinawa 904-0495, Japan
| | - Lisa Uehara
- Okinawa Institute of Science and Technology Graduate School, Tancha 1919-1, Onna, Okinawa 904-0495, Japan
| | - Mitsuhiro Yanagida
- Okinawa Institute of Science and Technology Graduate School, Tancha 1919-1, Onna, Okinawa 904-0495, Japan
| | - Kojiro Takeda
- Department of Biology, Faculty of Science and Engineering, Konan University, 8-9-1 Okamoto, Higashinada-ku, Kobe 658-8501, Japan.,Institute for Integrative Neurobiology, Konan University, 8-9-1 Okamoto, Higashinada-ku, Kobe 658-8501, Japan
| | - Shigeaki Saitoh
- Institute of Life Science, Kurume University, Hyakunen-Khoen 1-1, Kurume, Fukuoka 839-0864, Japan
| |
Collapse
|
10
|
Gómez-Hierro A, Lambea E, Giménez-Zaragoza D, López-Avilés S, Yance-Chávez T, Montserrat M, Pujol MJ, Bachs O, Aligue R. Ssp1 CaMKK: A Sensor of Actin Polarization That Controls Mitotic Commitment through Srk1 in Schizosaccharomyces pombe. PLoS One 2015; 10:e0143037. [PMID: 26575035 PMCID: PMC4648557 DOI: 10.1371/journal.pone.0143037] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 10/29/2015] [Indexed: 11/18/2022] Open
Abstract
Background Calcium/calmodulin-dependent protein kinase kinase (CaMKK) is required for diverse cellular functions. Mammalian CaMKK activates CaMKs and also the evolutionarily-conserved AMP-activated protein kinase (AMPK). The fission yeast Schizosaccharomyces pombe CaMKK, Ssp1, is required for tolerance to limited glucose through the AMPK, Ssp2, and for the integration of cell growth and division through the SAD kinase Cdr2. Results Here we report that Ssp1 controls the G2/M transition by regulating the activity of the CaMK Srk1. We show that inhibition of Cdc25 by Srk1 is regulated by Ssp1; and also that restoring growth polarity and actin localization of ssp1-deleted cells by removing the actin-monomer-binding protein, twinfilin, is sufficient to suppress the ssp1 phenotype. Conclusions These findings demonstrate that entry into mitosis is mediated by a network of proteins, including the Ssp1 and Srk1 kinases. Ssp1 connects the network of components that ensures proper polarity and cell size with the network of proteins that regulates Cdk1-cyclin B activity, in which Srk1 plays an inhibitory role.
Collapse
Affiliation(s)
- Alba Gómez-Hierro
- Departament de Biologia Cellular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona, Catalunya, Spain
| | - Eva Lambea
- Departament de Biologia Cellular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona, Catalunya, Spain
| | - David Giménez-Zaragoza
- Departament de Biologia Cellular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona, Catalunya, Spain
| | | | - Tula Yance-Chávez
- Departament de Biologia Cellular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona, Catalunya, Spain
| | - Marta Montserrat
- Departament de Biologia Cellular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona, Catalunya, Spain
| | - M. Jesús Pujol
- Departament de Biologia Cellular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona, Catalunya, Spain
| | - Oriol Bachs
- Departament de Biologia Cellular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona, Catalunya, Spain
| | - Rosa Aligue
- Departament de Biologia Cellular, Immunologia i Neurociències, Facultat de Medicina, Universitat de Barcelona, Institute of Biomedical Research August Pi i Sunyer (IDIBAPS), Barcelona, Catalunya, Spain
- * E-mail:
| |
Collapse
|
11
|
Portugal C, Pinto L, Ribeiro M, Tenorio C, Igrejas G, Ruiz-Larrea F. Potential spoilage yeasts in winery environments: Characterization and proteomic analysis of Trigonopsis cantarellii. Int J Food Microbiol 2015; 210:113-20. [PMID: 26119188 DOI: 10.1016/j.ijfoodmicro.2015.06.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 05/25/2015] [Accepted: 06/08/2015] [Indexed: 11/29/2022]
Abstract
Wine microbiota is complex and includes a wide diversity of yeast species. Few of them are able to survive under the restrictive conditions of dry red wines. In our study we detected and identified seven yeast species of the order Saccharomycetales that can be considered potential spoilers of wines due to physiological traits such as acidogenic metabolism and off-odor generation: Arthroascus schoenii, Candida ishiwadae, Meyerozyma guilliermondii, Pichia holstii, Pichia manshurica, Trigonopsis cantarellii, and Trigonopsis variabilis. Based on the prevalence of T. cantarellii isolates in the wine samples of our study, we further characterized this species, determined molecular and phenotypic features, and performed a proteomic analysis to identify differentially expressed proteins at mid-exponential growth phase in the presence of ethanol in the culture broth. This yeast species is shown to be able to grow in the presence of ethanol by expressing heat shock proteins (Hsp70, Hsp71) and a DNA damage-related protein (Rad24), and to be able to confer spoilage characteristics on wine.
Collapse
Affiliation(s)
- Cauré Portugal
- University of La Rioja, Instituto de Ciencias de la Vid y del Vino (Universidad de La Rioja, CSIC, Gobierno de La Rioja), Av. Madre de Dios 51, 26006, Logroño, Spain; Lab. Technology and Quality of Alcoholic Beverages, University of São Paulo, College of Agriculture "Luiz de Queiroz", Av. Pádua Dias 11, 13418-900, Piracicaba, Brazil
| | - Luís Pinto
- Functional Genomics and Proteomics Unit, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal; Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal
| | - Miguel Ribeiro
- Functional Genomics and Proteomics Unit, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal; Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal
| | - Carmen Tenorio
- University of La Rioja, Instituto de Ciencias de la Vid y del Vino (Universidad de La Rioja, CSIC, Gobierno de La Rioja), Av. Madre de Dios 51, 26006, Logroño, Spain
| | - Gilberto Igrejas
- Functional Genomics and Proteomics Unit, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal; Department of Genetics and Biotechnology, University of Trás-os-Montes and Alto Douro, 5000-801 Vila Real, Portugal
| | - Fernanda Ruiz-Larrea
- University of La Rioja, Instituto de Ciencias de la Vid y del Vino (Universidad de La Rioja, CSIC, Gobierno de La Rioja), Av. Madre de Dios 51, 26006, Logroño, Spain.
| |
Collapse
|
12
|
Saitoh S, Mori A, Uehara L, Masuda F, Soejima S, Yanagida M. Mechanisms of expression and translocation of major fission yeast glucose transporters regulated by CaMKK/phosphatases, nuclear shuttling, and TOR. Mol Biol Cell 2014; 26:373-86. [PMID: 25411338 PMCID: PMC4294683 DOI: 10.1091/mbc.e14-11-1503] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Glucose transporters play a pivotal role in glucose homeostasis. The fission yeast high-affinity glucose transporter Ght5 is regulated with regard to transcription and localization via CaMKK and TOR pathways. These results clarify the evolutionarily conserved mechanisms underlying glucose homeostasis that prevent hyperglycemia in humans. Hexose transporters are required for cellular glucose uptake; thus they play a pivotal role in glucose homeostasis in multicellular organisms. Using fission yeast, we explored hexose transporter regulation in response to extracellular glucose concentrations. The high-affinity transporter Ght5 is regulated with regard to transcription and localization, much like the human GLUT transporters, which are implicated in diabetes. When restricted to a glucose concentration equivalent to that of human blood, the fission yeast transcriptional regulator Scr1, which represses Ght5 transcription in the presence of high glucose, is displaced from the nucleus. Its displacement is dependent on Ca2+/calmodulin-dependent kinase kinase, Ssp1, and Sds23 inhibition of PP2A/PP6-like protein phosphatases. Newly synthesized Ght5 locates preferentially at the cell tips with the aid of the target of rapamycin (TOR) complex 2 signaling. These results clarify the evolutionarily conserved molecular mechanisms underlying glucose homeostasis, which are essential for preventing hyperglycemia in humans.
Collapse
Affiliation(s)
- Shigeaki Saitoh
- Institute of Life Science, Kurume University, Hyakunen-Kohen 1-1, Kurume, Fukuoka 839-0864, Japan
| | - Ayaka Mori
- Okinawa Institute Science and Technology Graduate University, Tancha 1919-1, Onna, Okinawa 904-0495, Japan
| | - Lisa Uehara
- Okinawa Institute Science and Technology Graduate University, Tancha 1919-1, Onna, Okinawa 904-0495, Japan
| | - Fumie Masuda
- Institute of Life Science, Kurume University, Hyakunen-Kohen 1-1, Kurume, Fukuoka 839-0864, Japan
| | - Saeko Soejima
- Institute of Life Science, Kurume University, Hyakunen-Kohen 1-1, Kurume, Fukuoka 839-0864, Japan
| | - Mitsuhiro Yanagida
- Okinawa Institute Science and Technology Graduate University, Tancha 1919-1, Onna, Okinawa 904-0495, Japan
| |
Collapse
|
13
|
Does a shift to limited glucose activate checkpoint control in fission yeast? FEBS Lett 2014; 588:2373-8. [PMID: 24815688 DOI: 10.1016/j.febslet.2014.04.047] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 04/23/2014] [Accepted: 04/24/2014] [Indexed: 11/20/2022]
Abstract
Here we review cell cycle control in the fission yeast, Schizosaccharomyces pombe, in response to an abrupt reduction of glucose concentration in culture media. S. pombe arrests cell cycle progression when transferred from media containing 2.0% glucose to media containing 0.1%. After a delay, S. pombe resumes cell division at a surprisingly fast rate, comparable to that observed in 2% glucose. We found that a number of genes, including zinc-finger transcription factor Scr1, CaMKK-like protein kinase Ssp1, and glucose transporter Ght5, enable rapid cell division in low glucose. In this article, we examine whether cell cycle checkpoint-like control operates during the delay and after resumption of cell division in limited-glucose. Using microarray analysis and genetic screening, we identified several candidate genes that may be involved in controlling this low-glucose adaptation.
Collapse
|