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Utharn S, Yodsang P, Incharoensakdi A, Jantaro S. Cyanobacterium Synechocystis sp. PCC 6803 lacking adc1 gene produces higher polyhydroxybutyrate accumulation under modified nutrients of acetate supplementation and nitrogen-phosphorus starvation. ACTA ACUST UNITED AC 2021; 31:e00661. [PMID: 34386355 PMCID: PMC8342905 DOI: 10.1016/j.btre.2021.e00661] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 07/12/2021] [Accepted: 07/23/2021] [Indexed: 11/28/2022]
Abstract
Increased polyhydroxybutyrate production in cyanobacterium Synechocystis sp. PCC 6803 lacking adc1 gene (Δadc1) is first-timely reported in this study. We constructed the mutant by disrupting adc1 gene encoding arginine decarboxylase, thereby exhibiting a partial blockade of polyamine synthesis. This Δadc1 mutant had a proliferative growth and certain contents of intracellular pigments including chlorophyll a and carotenoids as similar as those of wild type (WT). Highest PHB production was certainly induced by BG11-N-P+A condition in both WT and Δadc1 mutant of about 24.9 %w/DCW at day 9 and 36.1 %w/DCW at day 7 of adaptation time, respectively. Abundant PHB granules were also visualized under both BG11-N-P and BG11-N-P+A conditions. All pha transcript amounts of Δadc1 mutant grown at 7 days-adaptation time were clearly upregulated corresponding to its PHB content under BG11-N-P+A condition. Our finding indicated that this adc1 perturbation is alternatively achieved for PHB production in Synechocystis sp. PCC 6803.
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Key Words
- ADC, arginine decarboxylase
- Adc1 mutant
- DCW, dry cell weight
- DMF, N,N-dimethylformamide
- HPLC, high pressure liquid chromatography
- Nutrient deprivation
- PCR, polymerase chain reaction
- PHAs, polyhydroxyalkanoates
- PHB, polyhydroxybutyrate
- Polyhydroxybutyrate
- Synechocystis sp. PCC6803
- TAE, Tris-acetate-ethylene diamine tetraacetic acid
- TCA, tricarboxylic acid
- h, hour(s)
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Affiliation(s)
- Suthira Utharn
- Laboratory of Cyanobacterial Biotechnology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.,Program of Biotechnology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Panutda Yodsang
- Laboratory of Cyanobacterial Biotechnology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.,King Mongkut's University of Technology Thonburi Residential College, Ratchaburi, 70150, Thailand
| | - Aran Incharoensakdi
- Laboratory of Cyanobacterial Biotechnology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Saowarath Jantaro
- Laboratory of Cyanobacterial Biotechnology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
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Resilience and self-regulation processes of microalgae under UV radiation stress. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C: PHOTOCHEMISTRY REVIEWS 2020. [DOI: 10.1016/j.jphotochemrev.2019.100322] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Response of Synechocystis sp. PCC 6803 to UV radiations by alteration of polyamines associated with thylakoid membrane proteins. World J Microbiol Biotechnol 2018; 35:8. [PMID: 30569232 DOI: 10.1007/s11274-018-2580-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Accepted: 12/11/2018] [Indexed: 11/27/2022]
Abstract
The responses of Synechocystis sp. PCC 6803 exposed to UVA, UVB and UVC for at least 3 h were investigated with the emphasis on the changes of polyamines (PAs) levels in whole cells, thylakoid membrane fraction, and thylakoid membrane-associated proteins fraction. All UV radiations caused a slight decrease on cell growth but a drastic reduction of photosynthetic efficiency of Synechocystis cells. UV radiations, especially UVB and UVC, severely decreased the levels of PAs associated with thylakoid membrane proteins. The decreased PAs levels as affected by UV radiation correlated well with the decrease of photosynthetic efficiency, suggesting the role of PAs for the maintenance of photosynthetic activity of Synechocystis. PAs, especially spermidine (Spd) and putrescine (Put), were found abundantly in the thylakoid membrane fraction, and these PAs were associated mainly with the PSI trimer complex. Importantly, the exposure of Synechocystis cells to all UV radiations for 3 h resulted in the increase of Spd associated with the PSII monomer and dimer complex, suggesting its protective role against UV radiations despite the overall decrease of PAs.
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External spermine prevents UVA-induced damage of Synechocystis sp. PCC 6803 via increased catalase activity and decreased H2O2 and malonaldehyde levels. ANN MICROBIOL 2018. [DOI: 10.1007/s13213-018-1376-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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Schweikert K, Burritt DJ. Polyamines in macroalgae: advances and future perspectives. JOURNAL OF PHYCOLOGY 2015; 51:838-849. [PMID: 26986881 DOI: 10.1111/jpy.12325] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Accepted: 06/04/2015] [Indexed: 06/05/2023]
Abstract
Polyamines (PA) are ubiquitous, small, aliphatic cations found in all living cells. In recent years the importance of these molecules for macroalgae has become evident and a substantial body of knowledge has been accumulated over the last three decades. This review summarizes research on the PAs found in macroalgae, their transport and metabolism, and their biological significance in processes such as cell division, chloroplast development, and reproduction. The involvement of PAs in environmental stress responses in macroalgae is also addressed. The discussion of PAs in this review not only demonstrates that PAs play an important role in physiological processes in macroalgae, but also clearly demonstrates the similarities and differences between PA metabolism in macroalgae and higher plants. Key areas for future research are also discussed.
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Affiliation(s)
- Katja Schweikert
- Department of Botany, University of Otago, P.O. Box 56, Dunedin, 9054, New Zealand
| | - David J Burritt
- Department of Botany, University of Otago, P.O. Box 56, Dunedin, 9054, New Zealand
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Yodsang P, Pothipongsa A, Mäenpää P, Incharoensakdi A. Involvement of polyamine binding protein D (PotD) of Synechocystis sp. PCC 6803 in spermidine uptake and excretion. Curr Microbiol 2014; 69:417-22. [PMID: 24828249 DOI: 10.1007/s00284-014-0605-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 03/06/2014] [Indexed: 01/12/2023]
Abstract
The in vivo function of polyamine binding protein D (PotD) in Synechocystis sp. PCC 6803 for the transport of spermidine was investigated using Synechocystis mutant disrupted in potD gene. The growth rate of potD mutant was similar to that of wild-type when grown in BG11 medium. However, the mutant exhibited severely reduced growth compared to the wild-type when BG11 medium was supplemented with 0.5 mM spermidine. The mutant accumulated a higher spermidine level than the wild-type when grown in the medium with or without spermidine. Transport experiments revealed that the mutant had a reduction in both the uptake and the excretion of spermidine. Moreover, [(14)C]spermidine-loaded wild-type and mutant cells showed a decrease of [(14)C]spermidine excretion when the assay medium contained exogenous spermidine. These data suggest that PotD is involved in both the uptake and the excretion of spermidine in Synechocystis cells.
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Affiliation(s)
- Panutda Yodsang
- Laboratory of Cyanobacterial Biotechnology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
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Exogenous Spermidine Alleviates UV-Induced Growth Inhibition of Synechocystis sp. PCC 6803 via Reduction of Hydrogen Peroxide and Malonaldehyde Levels. Appl Biochem Biotechnol 2014; 173:1145-56. [DOI: 10.1007/s12010-014-0887-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Accepted: 03/24/2014] [Indexed: 10/25/2022]
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Sanmartín P, Villa F, Polo A, Silva B, Prieto B, Cappitelli F. Rapid evaluation of three biocide treatments against the cyanobacterium Nostoc sp. PCC 9104 by color changes. ANN MICROBIOL 2014. [DOI: 10.1007/s13213-014-0882-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Schweikert K, Hurd CL, Sutherland JE, Burritt DJ. Regulation of polyamine metabolism in Pyropia cinnamomea (W.A. Nelson), an important mechanism for reducing UV-B-induced oxidative damage. JOURNAL OF PHYCOLOGY 2014; 50:267-279. [PMID: 26988184 DOI: 10.1111/jpy.12166] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Accepted: 12/08/2013] [Indexed: 06/05/2023]
Abstract
It is generally accepted that ultraviolet (UV) radiation can have adverse affects on phototrophic organisms, independent of ozone depletion. The red intertidal seaweed Pyropia cinnamomea W.A. Nelson (previously Porphyra cinnamomea Sutherland et al. 2011), similar to many other intertidal macrophytes, is exposed to high levels of UV radiation on a daily basis due to emersion in the upper littoral zone. It has been shown that seaweeds, like higher plants, respond to an increased activity of antioxidative enzymes when exposed to stress. However, earlier investigations have shown that P. cinnamomea also compensates for stress due to UV radiation by increasing polyamine (PA) levels, especially bound-soluble and bound-insoluble PAs. The PA precursor putrescine (PUT) can be synthesized via two enzymatic pathways: arginine decarboxylase (ADC) and ornithine decarboxylase (ODC). Both of these enzymes showed increased activity in P. cinnamomea under UV stress. In higher plants, ADC is the enzyme responsible for increased PA levels during stress exposure, while ODC is correlated with cell division and reproduction. However, there are contrary findings in the literature. Using two irreversible inhibitors, we identified the enzyme most likely responsible for increased PUT synthesis and therefore increased stress tolerance in P. cinnamomea. Our results show that changes in the PA synthesis pathway in P. cinnamomea under UV stress are based on an increased activity of ADC. When either inhibitor was added, lipid hydroperoxide levels increased even under photosynthetically active radiation, suggesting that PAs are involved in protection mechanisms under normal light conditions as well. We also show that under optimum or low-stress conditions, ODC activity is correlated with PUT synthesis.
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Affiliation(s)
- Katja Schweikert
- Department of Botany, University of Otago, P.O. Box 56, Dunedin, New Zealand
| | - Catriona L Hurd
- Institute for Marine and Antarctic Studies (IMAS), Private Bag 129, Hobart, Tasmania, 7001, Australia
| | - Judith E Sutherland
- School of Biological Sciences, University of Auckland, Auckland Mail Centre, Private Bag 92019, Auckland, 1142, New Zealand
| | - David J Burritt
- Department of Botany, University of Otago, P.O. Box 56, Dunedin, New Zealand
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Minocha R, Majumdar R, Minocha SC. Polyamines and abiotic stress in plants: a complex relationship. FRONTIERS IN PLANT SCIENCE 2014; 5:175. [PMID: 24847338 PMCID: PMC4017135 DOI: 10.3389/fpls.2014.00175] [Citation(s) in RCA: 231] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Accepted: 04/11/2014] [Indexed: 05/18/2023]
Abstract
The physiological relationship between abiotic stress in plants and polyamines was reported more than 40 years ago. Ever since there has been a debate as to whether increased polyamines protect plants against abiotic stress (e.g., due to their ability to deal with oxidative radicals) or cause damage to them (perhaps due to hydrogen peroxide produced by their catabolism). The observation that cellular polyamines are typically elevated in plants under both short-term as well as long-term abiotic stress conditions is consistent with the possibility of their dual effects, i.e., being protectors from as well as perpetrators of stress damage to the cells. The observed increase in tolerance of plants to abiotic stress when their cellular contents are elevated by either exogenous treatment with polyamines or through genetic engineering with genes encoding polyamine biosynthetic enzymes is indicative of a protective role for them. However, through their catabolic production of hydrogen peroxide and acrolein, both strong oxidizers, they can potentially be the cause of cellular harm during stress. In fact, somewhat enigmatic but strong positive relationship between abiotic stress and foliar polyamines has been proposed as a potential biochemical marker of persistent environmental stress in forest trees in which phenotypic symptoms of stress are not yet visible. Such markers may help forewarn forest managers to undertake amelioration strategies before the appearance of visual symptoms of stress and damage at which stage it is often too late for implementing strategies for stress remediation and reversal of damage. This review provides a comprehensive and critical evaluation of the published literature on interactions between abiotic stress and polyamines in plants, and examines the experimental strategies used to understand the functional significance of this relationship with the aim of improving plant productivity, especially under conditions of abiotic stress.
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Affiliation(s)
- Rakesh Minocha
- US Forest Service, Northern Research StationDurham, NH, USA
| | - Rajtilak Majumdar
- U.S. Department of Agriculture, Agricultural Research ServiceGeneva, NY, USA
| | - Subhash C. Minocha
- Department of Biological Sciences, University of New HampshireDurham, NH, USA
- *Correspondence: Subhash C. Minocha, Department of Biological Sciences, University of New Hampshire, Rudman Hall, 46 College Road, Durham, NH 03824, USA e-mail:
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Polyamines Induced by Osmotic Stress Protect Synechocystis sp. PCC 6803 Cells and Arginine Decarboxylase Transcripts Against UV-B Radiation. Appl Biochem Biotechnol 2012; 168:1476-88. [DOI: 10.1007/s12010-012-9871-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Accepted: 08/28/2012] [Indexed: 12/30/2022]
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