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Srivastava R, Singh N, Kanda T, Yadav S, Yadav S, Atri N. Cyanobacterial Proteomics: Diversity and Dynamics. J Proteome Res 2024; 23:2680-2699. [PMID: 38470568 DOI: 10.1021/acs.jproteome.3c00779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
Cyanobacteria (oxygenic photoautrophs) comprise a diverse group holding significance both environmentally and for biotechnological applications. The utilization of proteomic techniques has significantly influenced investigations concerning cyanobacteria. Application of proteomics allows for large-scale analysis of protein expression and function within cyanobacterial systems. The cyanobacterial proteome exhibits tremendous functional, spatial, and temporal diversity regulated by multiple factors that continuously modify protein abundance, post-translational modifications, interactions, localization, and activity to meet the dynamic needs of these tiny blue greens. Modern mass spectrometry-based proteomics techniques enable system-wide examination of proteome complexity through global identification and high-throughput quantification of proteins. These powerful approaches have revolutionized our understanding of proteome dynamics and promise to provide novel insights into integrated cellular behavior at an unprecedented scale. In this Review, we present modern methods and cutting-edge technologies employed for unraveling the spatiotemporal diversity and dynamics of cyanobacterial proteomics with a specific focus on the methods used to analyze post-translational modifications (PTMs) and examples of dynamic changes in the cyanobacterial proteome investigated by proteomic approaches.
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Affiliation(s)
| | - Nidhi Singh
- Department of Botany, M.M.V., Banaras Hindu University, Varanasi 221005, India
| | - Tripti Kanda
- Department of Botany, M.M.V., Banaras Hindu University, Varanasi 221005, India
| | - Sadhana Yadav
- Department of Botany, M.M.V., Banaras Hindu University, Varanasi 221005, India
| | - Shivam Yadav
- Department of Botany, University of Allahabad, Allahabad 211002, India
| | - Neelam Atri
- Department of Botany, M.M.V., Banaras Hindu University, Varanasi 221005, India
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Sarasa-Buisan C, Nieves-Morión M, Arévalo S, Helm RF, Sevilla E, Luque I, Fillat MF. FurC (PerR) contributes to the regulation of peptidoglycan remodeling and intercellular molecular transfer in the cyanobacterium Anabaena sp. strain PCC 7120. mBio 2024; 15:e0323123. [PMID: 38334377 PMCID: PMC10936207 DOI: 10.1128/mbio.03231-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 01/09/2024] [Indexed: 02/10/2024] Open
Abstract
Microbial extracellular proteins and metabolites provide valuable information concerning how microbes adapt to changing environments. In cyanobacteria, dynamic acclimation strategies involve a variety of regulatory mechanisms, being ferric uptake regulator proteins as key players in this process. In the nitrogen-fixing cyanobacterium Anabaena sp. strain PCC 7120, FurC (PerR) is a global regulator that modulates the peroxide response and several genes involved in photosynthesis and nitrogen metabolism. To investigate the possible role of FurC in shaping the extracellular environment of Anabaena, the analysis of the extracellular metabolites and proteins of a furC-overexpressing variant was compared to that of the wild-type strain. There were 96 differentially abundant proteins, 78 of which were found for the first time in the extracellular fraction of Anabaena. While these proteins belong to different functional categories, most of them are predicted to be secreted or have a peripheral location. Several stress-related proteins, including PrxA, flavodoxin, and the Dps homolog All1173, accumulated in the exoproteome of furC-overexpressing cells, while decreased levels of FurA and a subset of membrane proteins, including several export proteins and amiC gene products, responsible for nanopore formation, were detected. Direct repression by FurC of some of those genes, including amiC1 and amiC2, could account for odd septal nanopore formation and impaired intercellular molecular transfer observed in the furC-overexpressing variant. Assessment of the exometabolome from both strains revealed the release of two peptidoglycan fragments in furC-overexpressing cells, namely 1,6-anhydro-N-acetyl-β-D-muramic acid (anhydroMurNAc) and its associated disaccharide (β-D-GlcNAc-(1-4)-anhydroMurNAc), suggesting alterations in peptidoglycan breakdown and recycling.IMPORTANCECyanobacteria are ubiquitous photosynthetic prokaryotes that can adapt to environmental stresses by modulating their extracellular contents. Measurements of the organization and composition of the extracellular milieu provide useful information about cyanobacterial adaptive processes, which can potentially lead to biomimetic approaches to stabilizing biological systems to adverse conditions. Anabaena sp. strain PCC 7120 is a multicellular, nitrogen-fixing cyanobacterium whose intercellular molecular exchange is mediated by septal junctions that traverse the septal peptidoglycan through nanopores. FurC (PerR) is an essential transcriptional regulator in Anabaena, which modulates the response to several stresses. Here, we show that furC-overexpressing cells result in a modified exoproteome and the release of peptidoglycan fragments. Phenotypically, important alterations in nanopore formation and cell-to-cell communication were observed. Our results expand the roles of FurC to the modulation of cell-wall biogenesis and recycling, as well as in intercellular molecular transfer.
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Affiliation(s)
- Cristina Sarasa-Buisan
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias e Instituto de Biocomputación y Física de Sistemas Complejos. Universidad de Zaragoza, Zaragoza, Spain
- Instituto de Bioquímica Vegetal y Fotosíntesis, CSIC and Universidad de Sevilla, Sevilla, Spain
| | - Mercedes Nieves-Morión
- Instituto de Bioquímica Vegetal y Fotosíntesis, CSIC and Universidad de Sevilla, Sevilla, Spain
| | - Sergio Arévalo
- Instituto de Bioquímica Vegetal y Fotosíntesis, CSIC and Universidad de Sevilla, Sevilla, Spain
| | - Richard F. Helm
- Department of Biochemistry, Virginia Tech, Blacksburg, Virginia, USA
| | - Emma Sevilla
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias e Instituto de Biocomputación y Física de Sistemas Complejos. Universidad de Zaragoza, Zaragoza, Spain
| | - Ignacio Luque
- Instituto de Bioquímica Vegetal y Fotosíntesis, CSIC and Universidad de Sevilla, Sevilla, Spain
| | - María F. Fillat
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias e Instituto de Biocomputación y Física de Sistemas Complejos. Universidad de Zaragoza, Zaragoza, Spain
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Karami S, Shiran B, Ravash R, Fallahi H. A comprehensive analysis of transcriptomic data for comparison of plants with different photosynthetic pathways in response to drought stress. PLoS One 2023; 18:e0287761. [PMID: 37368898 DOI: 10.1371/journal.pone.0287761] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 06/11/2023] [Indexed: 06/29/2023] Open
Abstract
The main factor leading to a decrease in crop productivity is abiotic stresses, particularly drought. Plants with C4 and CAM photosynthesis are better adapted to drought-prone areas than C3 plants. Therefore, it is beneficial to compare the stress response of plants with different photosynthetic pathways. Since most crops are C3 and C4 plants, this study focused on conducting an RNA-seq meta-analysis to investigate and compare how C3 and C4 plants respond to drought stress at the gene expression level in their leaves. Additionally, the accuracy of the meta-analysis results was confirmed with RT-qPCR. Based on the functional enrichment and network analysis, hub genes related to ribosomal proteins and photosynthesis were found to play a potential role in stress response. Moreover, our findings suggest that the low abundant amino acid degradation pathway, possibly through providing ATP source for the TCA cycle, in both groups of plants and the activation of the OPPP pathway in C4 plants, through providing the electron source required by this plant, can help to improve drought stress tolerance.
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Affiliation(s)
- Shima Karami
- Department of Biotechnology and Plant Breeding, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran
| | - Behrouz Shiran
- Department of Biotechnology and Plant Breeding, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran
- Institute of Biotechnology, Shahrekord University, Shahrekord, Iran
| | - Rudabeh Ravash
- Department of Biotechnology and Plant Breeding, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran
| | - Hossein Fallahi
- Department of Biology, Faculty of Sciences, Razi University, Kermanshah, Iran
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Sriwastaw S, Rai R, Raj A, Kesari V, Rai LC. All3048, a DnaJ III homolog of Anabaena sp. PCC7120 mediates heat shock response in E. coli and its N-terminus J-domain stimulates DnaK ATPase activity. Int J Biol Macromol 2023; 233:123563. [PMID: 36746302 DOI: 10.1016/j.ijbiomac.2023.123563] [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: 07/27/2022] [Revised: 01/31/2023] [Accepted: 02/01/2023] [Indexed: 02/05/2023]
Abstract
Cyanobacterial DnaJ offers thermo-tolerance and effectively prevents aggregation of denatured protein in coordination with DnaK. The hypothetical protein All3048 of Anabaena sp. PCC7120 was found to be a 24 kDa DnaJ III protein with a putative J-domain at the extreme N-terminus. This paper decodes the role of All3048 in thermo-tolerance and as a co-chaperon of DnaK. Semi-quantitative and RT-PCR results showed up-accumulation of all3048 in heat, UV-B, cadmium, arsenic and salt. BL21/pET-28a-all3048, all3048(1-95) and all3048(31-128) reduced the heat stress-induced ROS generation by 40 %, 21 % and 24 % as compared to BL21/pET-28-a. Conformational properties of All3048 and its truncated variants were assessed using bis ANS, guanidine hydrochloride and acrylamide quenching. All3048(1-95), All3048 and All3048(31-128) increased DnaK ATPase activity by 8.6, 8.2, and 2.5 fold, respectively. The thermostability investigated using DSC and DSF methods affirmed the relative stability of All3048 and All3048 (31-128), whereas All3048 (1-95) was the least stable. All3048 is a novel cyanobacterial DnaJ III that imparts heat stress tolerance in E. coli; however, only the J-domain present at N-terminus was sufficient for stimulating DnaK's ATPase activity.
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Affiliation(s)
- Sonam Sriwastaw
- Molecular Biology Section, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Ruchi Rai
- Molecular Biology Section, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Alka Raj
- Molecular Biology Section, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Vigya Kesari
- Molecular Biology Section, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - L C Rai
- Molecular Biology Section, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
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Srivastava R, Kanda T, Yadav S, Singh N, Yadav S, Prajapati R, Kesari V, Atri N. Salinity pretreatment synergies heat shock toxicity in cyanobacterium Anabaena PCC7120. Front Microbiol 2023; 14:1061927. [PMID: 36876104 PMCID: PMC9983364 DOI: 10.3389/fmicb.2023.1061927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 01/16/2023] [Indexed: 02/18/2023] Open
Abstract
This study was undertaken to bridge the knowledge gap pertaining to cyanobacteria's response to pretreatment. The result elucidates the synergistic effect of pretreatment toxicity in cyanobacterium Anabaena PCC7120 on morphological and biochemical attributes. Chemical (salt) and physical (heat) stress-pretreated cells exhibited significant and reproducible changes in terms of growth pattern, morphology, pigments, lipid peroxidation, and antioxidant activity. Salinity pretreatment showed more than a five-fold decrease in the phycocyanin content but a six-fold and five-fold increase in carotenoid, lipid peroxidation (MDA content), and antioxidant activity (SOD and CAT) at 1 h and on 3rd day of treatment, respectively, giving the impression of stress-induced free radicals that are scavenged by antioxidants when compared to heat shock pretreatment. Furthermore, quantitative analysis of transcript (qRT-PCR) for FeSOD and MnSOD displayed a 3.6- and 1.8-fold increase in salt-pretreated (S-H) samples. The upregulation of transcript corresponding to salt pretreatment suggests a toxic role of salinity in synergizing heat shock. However, heat pretreatment suggests a protective role in mitigating salt toxicity. It could be inferred that pretreatment enhances the deleterious effect. However, it further showed that salinity (chemical stress) augments the damaging effect of heat shock (physical stress) more profoundly than physical stress on chemical stress possibly by modulating redox balance via activation of antioxidant responses. Our study reveals that upon pretreatment of heat, the negative effect of salt can be mitigated in filamentous cyanobacteria, thus providing a foundation for improved cyanobacterial tolerance to salt stress.
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Affiliation(s)
- Rupanshee Srivastava
- Department of Botany, Institute of Sciences, Banaras Hindu University, Varanasi, India
| | - Tripti Kanda
- Department of Botany, Institute of Sciences, Banaras Hindu University, Varanasi, India
| | - Sadhana Yadav
- Department of Botany, Institute of Sciences, Banaras Hindu University, Varanasi, India
| | - Nidhi Singh
- Department of Botany, Institute of Sciences, Banaras Hindu University, Varanasi, India
| | - Shivam Yadav
- Department of Botany, Thakur Prasad Singh (T.P.S.) College, Patna, Bihar, India
| | - Rajesh Prajapati
- Department of Botany, Institute of Sciences, Banaras Hindu University, Varanasi, India
| | - Vigya Kesari
- Department of Botany, Institute of Sciences, Banaras Hindu University, Varanasi, India
| | - Neelam Atri
- Department of Botany, Mahila Mahavidyalaya (M.M.V.), Banaras Hindu University, Varanasi, India
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Rai KK, Singh S, Rai R, Rai LC. Functional characterization of two WD40 family proteins, Alr0671 and All2352, from Anabaena PCC 7120 and deciphering their role in abiotic stress management. PLANT MOLECULAR BIOLOGY 2022; 110:545-563. [PMID: 35997919 DOI: 10.1007/s11103-022-01306-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
WD40 domain-containing proteins are one of the eukaryotes' most ancient and ubiquitous protein families. Little is known about the presence and function of these proteins in cyanobacteria in general and Anabaena in particular. In silico analysis confirmed the presence of WD40 repeats. Gene expression analysis indicated that the transcript levels of both the target proteins were up-regulated up to 4 fold in Cd and drought and 2-3 fold in heat, salt, and UV-B stress. Using a fluorescent oxidative stress indicator, we showed that the recombinant proteins were scavenging reactive oxygen species (ROS) (4-5 fold) more efficiently than empty vectors. Chromatin immunoprecipitation analysis (ChIP) and electrophoretic mobility shift assay (EMSA) revealed that the target proteins function as transcription factors after binding to the promoter sequences. The presence of kinase activity (2-4 fold) in the selected proteins indicated that these proteins could modulate the functions of other cellular proteins under stress conditions by inducing phosphorylation of specific amino acids. The chosen proteins also demonstrated interaction with Zn, Cd, and Cu (1.4-2.5 fold), which might stabilize the proteins' structure and biophysical functions under multiple abiotic stresses. The functionally characterized Alr0671 and All2352 proteins act as transcription factors and offer tolerance to agriculturally relevant abiotic stresses.
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Affiliation(s)
- Krishna Kumar Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, 221005, Varanasi, India
| | - Shilpi Singh
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, 221005, Varanasi, India
| | - Ruchi Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, 221005, Varanasi, India
| | - L C Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, 221005, Varanasi, India.
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Cyclophilin anaCyp40 regulates photosystem assembly and phycobilisome association in a cyanobacterium. Nat Commun 2022; 13:1690. [PMID: 35354803 PMCID: PMC8967839 DOI: 10.1038/s41467-022-29211-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Accepted: 02/28/2022] [Indexed: 11/08/2022] Open
Abstract
Cyclophilins, or immunophilins, are proteins found in many organisms including bacteria, plants and humans. Most of them display peptidyl-prolyl cis-trans isomerase activity, and play roles as chaperones or in signal transduction. Here, we show that cyclophilin anaCyp40 from the cyanobacterium Anabaena sp. PCC 7120 is enzymatically active, and seems to be involved in general stress responses and in assembly of photosynthetic complexes. The protein is associated with the thylakoid membrane and interacts with phycobilisome and photosystem components. Knockdown of anacyp40 leads to growth defects under high-salt and high-light conditions, and reduced energy transfer from phycobilisomes to photosystems. Elucidation of the anaCyp40 crystal structure at 1.2-Å resolution reveals an N-terminal helical domain with similarity to PsbQ components of plant photosystem II, and a C-terminal cyclophilin domain with a substrate-binding site. The anaCyp40 structure is distinct from that of other multi-domain cyclophilins (such as Arabidopsis thaliana Cyp38), and presents features that are absent in single-domain cyclophilins.
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Chanu NK, Mandal MK, Srivastava A, Chaurasia N. Proteomics analysis reveals several metabolic alterations in cyanobacterium Anabaena sp. NC-K1 in response to alpha-cypermethrin exposure. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:19762-19777. [PMID: 34718975 DOI: 10.1007/s11356-021-16611-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Accepted: 09/14/2021] [Indexed: 06/13/2023]
Abstract
In the current study, the effect of the EC50 and LC90 concentrations of pyrethroid insecticide alpha-cypermethrin to cyanobacteria Anabaena sp. NC-K1 was investigated at different time exposures (1st day, 4th day and 7th day) with reference to growth, photosynthetic pigments, oxidative damage and antioxidant defence system. Superoxide dismutase (1.38-fold), peroxidase (5.04) and proline content (2.27-fold) were enhanced compared to the control. After performing 2D gel electrophoresis at 1st day EC50 exposure, where appropriate differences in the biochemical and physiological parameters were observed, 22 differentially accumulated proteins (20 upregulated and 2 downregulated) were selected for mass spectrometry. Out of 42 proteins identified, 20 upregulated protein spots were classified into twelve categories according to their metabolic functions. Proteins related to photosynthesis (phycobilisome rod-core linker polypeptide, rubisco), stress responses (Hsp70, Hsp40, catalase family peroxidase), translation (elongation factor Tu) and amino acid biosynthesis and metabolism (3-phosphoshikimate 1-carboxyvinyl transferase) were significantly upregulated. Additionally, proteins involved in transcription and DNA repair (Snf-2 histone linker phd ring helicase, RNA polymerase sigma factor RpoD and Holliday junction ATP-dependent DNA helicase RuvA) were considerably upregulated. Upregulation of these proteins against pesticide stress presumably maintained the photosynthesis, energy metabolism, carbohydrate metabolism, transport and signalling proteins, transcription, translation and DNA repair. Additionally, these proteins might involve in sufficient detoxification of ROS and play a crucial role in damage removal and repair of oxidized proteins, lipids and nucleic acids. Taken together, Anabaena sp. NC-K1 responded towards alpha-cypermethrin stress via modulating its proteome to maintain its cellular metabolism and homeostasis.
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Affiliation(s)
- Ng Kunjarani Chanu
- Environmental Biotechnology Laboratory, Department of Biotechnology and Bioinformatics, North-Eastern Hill University, Shillong, Meghalaya, 793022, India
| | - Madan Kumar Mandal
- Environmental Biotechnology Laboratory, Department of Biotechnology and Bioinformatics, North-Eastern Hill University, Shillong, Meghalaya, 793022, India
| | - Akanksha Srivastava
- Department of Botany, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Neha Chaurasia
- Environmental Biotechnology Laboratory, Department of Biotechnology and Bioinformatics, North-Eastern Hill University, Shillong, Meghalaya, 793022, India.
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Amahong K, Yan M, Li J, Yang N, Liu H, Bi X, Vuitton DA, Lin R, Lü G. EgGLUT1 Is Crucial for the Viability of Echinococcus granulosus sensu stricto Metacestode: A New Therapeutic Target? Front Cell Infect Microbiol 2021; 11:747739. [PMID: 34858873 PMCID: PMC8632494 DOI: 10.3389/fcimb.2021.747739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Accepted: 10/14/2021] [Indexed: 12/14/2022] Open
Abstract
Cystic echinococcosis (CE) is a zoonotic parasitic disease caused by infection with the larvae of Echinococcus granulosus sensu lato (s.l.) cluster. It is urgent to identify novel drug targets and develop new drug candidates against CE. Glucose transporter 1 (GLUT1) is mainly responsible for the transmembrane transport of glucose to maintain its constant cellular availability and is a recent research hotspot as a drug target in various diseases. However, the role of GLUT1 in E. granulosus s.l. (EgGLUT1) was unknown. In this study, we cloned a conserved GLUT1 homology gene (named EgGLUT1-ss) from E. granulosus sensu stricto (s.s.) and found EgGLUT1-ss was crucial for glucose uptake and viability by the protoscoleces of E. granulosus s.s. WZB117, a GLUT1 inhibitor, inhibited glucose uptake by E. granulosus s.s. and the viability of the metacestode in vitro. In addition, WZB117 showed significant therapeutic activity in E. granulosus s.s.-infected mice: a 10 mg/kg dose of WZB117 significantly reduced the number and weight of parasite cysts (P < 0.05) as efficiently as the reference drug, albendazole. Our results demonstrate that EgGLUT1-ss is crucial for glucose uptake by the protoscoleces of E. granulosus s.s., and its inhibitor WZB117 has a therapeutic effect on CE.
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Affiliation(s)
- Kuerbannisha Amahong
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China.,College of Pharmacy, Xinjiang Medical University, Urumqi, China
| | - Mingzhi Yan
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China.,College of Pharmacy, Xinjiang Medical University, Urumqi, China
| | - Jintian Li
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China.,College of Pharmacy, Xinjiang Medical University, Urumqi, China
| | - Ning Yang
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Hui Liu
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Xiaojuan Bi
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Dominique A Vuitton
- French National Reference Centre for Echinococcosis, University Bourgogne Franche-Comté, Besançon, France
| | - Renyong Lin
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China.,WHO Collaborating Centre for Prevention and Care Management of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China.,Basic Medical College, Xinjiang Medical University, Urumqi, China
| | - Guodong Lü
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China.,College of Pharmacy, Xinjiang Medical University, Urumqi, China.,WHO Collaborating Centre for Prevention and Care Management of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
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10
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Rai R, Singh S, Rai KK, Raj A, Sriwastaw S, Rai LC. Regulation of antioxidant defense and glyoxalase systems in cyanobacteria. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 168:353-372. [PMID: 34700048 DOI: 10.1016/j.plaphy.2021.09.037] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 09/09/2021] [Accepted: 09/28/2021] [Indexed: 05/19/2023]
Abstract
Oxidative stress is common consequence of abiotic stress in plants as well as cyanobacteria caused by generation of reactive oxygen species (ROS), an inevitable product of respiration and photosynthetic electron transport. ROS act as signalling molecule at low concentration however, when its production exceeds the endurance capacity of antioxidative defence system, the organisms suffer oxidative stress. A highly toxic metabolite, methylglyoxal (MG) is also produced in cyanobacteria in response to various abiotic stresses which consequently augment the ensuing oxidative damage. Taking recourse to the common lineage of eukaryotic plants and cyanobacteria, it would be worthwhile to explore the regulatory role of glyoxalase system and antioxidative defense mechanism in combating abiotic stress in cyanobacteria. This review provides comprehensive information on the complete glyoxalase system (GlyI, GlyII and GlyIII) in cyanobacteria. Furthermore, it elucidates the recent understanding regarding the production of ROS and MG, noteworthy link between intracellular MG and ROS and its detoxification via synchronization of antioxidants (enzymatic and non-enzymatic) and glyoxalase systems using glutathione (GSH) as common co-factor.
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Affiliation(s)
- Ruchi Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Shilpi Singh
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Krishna Kumar Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Alka Raj
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Sonam Sriwastaw
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - L C Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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11
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Srivastava A, Biswas S, Yadav S, Kumar S, Srivastava V, Mishra Y. Acute cadmium toxicity and post-stress recovery: Insights into coordinated and integrated response/recovery strategies of Anabaena sp. PCC 7120. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:124822. [PMID: 33858073 DOI: 10.1016/j.jhazmat.2020.124822] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 12/01/2020] [Accepted: 12/08/2020] [Indexed: 06/12/2023]
Abstract
Cyanobacteria, the first photoautotrophs have remarkable adaptive capabilities against most abiotic stresses, including Cd. A model cyanobacterium, Anabaena sp. PCC 7120 has been commonly used to understand cyanobacterial plasticity under different environmental stresses. However, very few studies have focused on the acute Cd toxicity. In this context, Anabaena was subjected to 100 μM Cd for 48 h (acute Cd stress, ACdS) and then transferred into the fresh medium for post-stress recovery (PSR). We further investigated the dynamics of morpho-ultrastructure, physiology, cytosolic proteome, thylakoidal complexes, chelators, and transporters after ACdS, as well as during early (ER), mid (MR), and late (LR) phases of PSR. The findings revealed that ACdS induced intracellular Cd accumulation and ROS production, altered morpho-ultrastructure, reduced photosynthetic pigments, and affected the structural organization of PSII, which subsequently hindered photosynthetic efficiency. Anabaena responded to ACdS and recovered during PSR by reprogramming the expression pattern of proteins/genes involved in cellular defense and repair; CO2 access, Calvin-Benson cycle, glycolysis, and pentose phosphate pathway; protein biosynthesis, folding, and degradation; regulatory functions; PSI-based cyclic electron flow; Cd chelation; and efflux. These modulations occurred in an integrated and coordinated manner that facilitated Anabaena to detoxify Cd and repair ACdS-induced cellular damage.
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Affiliation(s)
- Akanksha Srivastava
- Department of Botany, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Subhankar Biswas
- Department of Botany, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Sandhya Yadav
- Department of Botany, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Sanjiv Kumar
- Division of Glycoscience, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, Royal Institute of Technology (KTH), AlbaNova University Centre, Stockholm 10691, Sweden
| | - Vaibhav Srivastava
- Division of Glycoscience, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, Royal Institute of Technology (KTH), AlbaNova University Centre, Stockholm 10691, Sweden
| | - Yogesh Mishra
- Department of Botany, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
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12
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Ballal A, Chakravarty D, Bihani SC, Banerjee M. Gazing into the remarkable world of non-heme catalases through the window of the cyanobacterial Mn-catalase 'KatB'. Free Radic Biol Med 2020; 160:480-487. [PMID: 32858159 DOI: 10.1016/j.freeradbiomed.2020.08.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/09/2020] [Accepted: 08/18/2020] [Indexed: 10/23/2022]
Abstract
Catalases, enzymes that decompose H2O2, are broadly categorized as heme catalases or non-heme catalases. The non-heme catalases are also known as Mn-catalases as they have Mn atoms in their active sites. However, unlike the well characterized heme-catalases, the study of Mn-catalases has gained importance only in the last few years. The filamentous, heterocystous, N2-fixing cyanobacterium Anabaena PCC 7120, shows the presence of two Mn-catalases, KatA and KatB, but lacks heme catalases. Of the two Mn-catalases, KatB, which is induced by salt/desiccation, plays a major role in overcoming salinity/oxidative stress. In this mini review, we have summarized the recent advances made in the field of Mn-catalases, particularly KatB, and have interpreted these results in the larger context of stress physiology. These aspects bring to the fore the distinctive biochemical/structural properties of Mn-catalases and furthermore highlight the in vivo importance of these enzymes in adapting to oxidative stresses.
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Affiliation(s)
- Anand Ballal
- Molecular Biology Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India.
| | - Dhiman Chakravarty
- Molecular Biology Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India
| | - Subhash C Bihani
- Radiation Biology and Health Sciences Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Manisha Banerjee
- Molecular Biology Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai, 400094, India
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Wang F, Gao Y, Yang G. Recent advances in synthetic biology of cyanobacteria for improved chemicals production. Bioengineered 2020; 11:1208-1220. [PMID: 33124500 PMCID: PMC8291842 DOI: 10.1080/21655979.2020.1837458] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Cyanobacteria are Gram-negative photoautotrophic prokaryotes and have shown great importance to the Earth’s ecology. Based on their capability in oxygenic photosynthesis and genetic merits, they can be engineered as microbial chassis for direct conversion of carbon dioxide to value-added biofuels and chemicals. In the last decades, attempts have given to the application of synthetic biology tools and approaches in the development of cyanobacterial cell factories. Despite the successful proof-of-principle studies, large-scale application is still a technical challenge due to low yields of bioproducts. Therefore, recent efforts are underway to characterize and develop genetic regulatory parts and strategies for the synthetic biology applications in cyanobacteria. In this review, we present the recent advancements and application in cyanobacterial synthetic biology toolboxes. We also discuss the limitations and future perspectives for using such novel tools in cyanobacterial biotechnology.
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Affiliation(s)
- Fen Wang
- Department of Surgery, College of Medicine, University of Florida , Gainesville, FL, USA
| | - Yuanyuan Gao
- Jining Academy of Agricultural Science , Jining, Shandong, China
| | - Guang Yang
- Department of Aging and Geriatric Research, Institute on Aging, University of Florida , Gainesville, FL, USA
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Chatterjee A, Singh S, Rai R, Rai S, Rai L. Functional Characterization of Alr0765, A Hypothetical Protein from Anabaena PCC 7120 Involved in Cellular Energy Status Sensing, Iron Acquisition and Abiotic Stress Management in E. coli Using Molecular, Biochemical and Computational Approaches. Curr Genomics 2020; 21:295-310. [PMID: 33071622 PMCID: PMC7521041 DOI: 10.2174/1389202921999200424181239] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/27/2020] [Accepted: 03/30/2020] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Cyanobacteria are excellent model to understand the basic metabolic processes taking place in response to abiotic stress. The present study involves the characterization of a hypothetical protein Alr0765 of Anabaena PCC7120 comprising the CBS-CP12 domain and deciphering its role in abiotic stress tolerance. METHODS Molecular cloning, heterologous expression and protein purification using affinity chromatography were performed to obtain native purified protein Alr0765. The energy sensing property of Alr0765 was inferred from its binding affinity with different ligand molecules as analyzed by FTIR and TNP-ATP binding assay. AAS and real time-PCR were applied to evaluate the iron acquisition property and cyclic voltammetry was employed to check the redox sensitivity of the target protein. Transcript levels under different abiotic stresses, as well as spot assay, CFU count, ROS level and cellular H2O2 level, were used to show the potential role of Alr0765 in abiotic stress tolerance. In-silico analysis of Alr0765 included molecular function probability analysis, multiple sequence analysis, protein domain and motif finding, secondary structure analysis, protein-ligand interaction, homologous modeling, model refinement and verification and molecular docking was performed with COFACTOR, PROMALS-3D, InterProScan, MEME, TheaDomEx, COACH, Swiss modeller, Modrefiner, PROCHECK, ERRAT, MolProbity, ProSA, TM-align, and Discovery studio, respectively. RESULTS Transcript levels of alr0765 significantly increased by 20, 13, 15, 14.8, 12, 7, 6 and 2.5 fold when Anabaena PCC7120 treated with LC50 dose of heat, arsenic, cadmium, butachlor, salt, mannitol (drought), UV-B, and methyl viologen respectively, with respect to control (untreated). Heterologous expression resulted in 23KDa protein observed on the SDS-PAGE. Immunoblotting and MALDI-TOF-MS/MS, followed by MASCOT search analysis, confirmed the identity of the protein and ESI/MS revealed that the purified protein was a dimer. Binding possibility of Alr0765 with ATP was observed with an almost 6-fold increment in relative fluorescence during TNP-ATP binding assay with a λ max of 538 nm. FTIR spectra revealed modification in protein confirmation upon binding of Alr0765 with ATP, ADP, AMP and NADH. A 10-fold higher accumulation of iron was observed in digests of E. coli with recombinant vector after induction as compared to control, which affirms the iron acquisition property of the protein. Moreover, the generation of the redox potential of 146 mV by Alr0765 suggested its probable role in maintaining the redox status of the cell under environmental constraints. As per CFU count recombinant, E. coli BL21 cells showed about 14.7, 7.3, 6.9, 1.9, 3 and 4.9 fold higher number of colonies under heat, cadmium (CdCl2), arsenic (Na3AsO4), salt (NaCl), UV-B and drought (mannitol) respectively compared to pET21a harboring E. coli BL21 cells. Deterioration in the cellular ROS level and total cellular H2O2 concentration validated the stress tolerance ability of Alr0765. In-silico analysis unraveled novel findings and attested experimental findings in determining the role of Alr0765. CONCLUSION Alr0765 is a novel CBS-CP12 domain protein that maintains cellular energy level and iron homeostasis which provides tolerance against multiple abiotic stresses.
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Affiliation(s)
- Antra Chatterjee
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Shilpi Singh
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Ruchi Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Shweta Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - L.C. Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
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Rai S, Rai R, Singh PK, Rai LC. Alr2321, a multiple stress inducible glyoxalase I of Anabaena sp. PCC7120 detoxifies methylglyoxal and reactive species oxygen. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 214:105238. [PMID: 31301544 DOI: 10.1016/j.aquatox.2019.105238] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 06/25/2019] [Accepted: 06/26/2019] [Indexed: 06/10/2023]
Abstract
Abiotic stresses enhance the cellular level of reactive oxygen species (ROS) which consequently leads to toxic methylglyoxal (MG) production. Glyoxalases (GlyI & GlyII) catalyze the conversion of toxic MG into non-toxic lactic acid but their properties and functions have been overlooked in cyanobacteria. This is the first attempt to conduct a genome-wide analysis of GlyI protein (PF00903) from Anabaena sp. PCC7120. Out of total nine GlyI domain possessing proteins, only three (Alr2321, Alr4469, All1022) harbour conserve His/Glu/His/Glu metal binding site at their homologous position and are deficient in conserved region specific for Zn2+ dependent members. Their biochemical, structural and functional characterization revealed that only Alr2321 is a homodimeric Ni2+ dependent active GlyI with catalytic efficiency 11.7 × 106 M-1 s-1. It has also been found that Alr2321 is activated by various divalent metal ions and has maximum GlyI activity with Ni2+ followed by Co2+ > Mn2+ > Cu2+ and no activity with Zn2+. Moreover, the expression of alr2321 was found to be maximally up-regulated under heat (19 fold) followed by cadmium, desiccation, arsenic, salinity and UV-B stresses. BL21/pGEX-5X2-alr2321 showed improved growth under various abiotic stresses as compared to BL21/pGEX-5X2 by increased scavenging of intracellular MG and ROS levels. Taken together, these results suggest noteworthy links between intracellular MG and ROS, its detoxification by Alr2321, a member of GlyI family of Anabaena sp. PCC7120, in relation to abiotic stress.
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Affiliation(s)
- Shweta Rai
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Ruchi Rai
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Prashant Kumar Singh
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - L C Rai
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
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Chakravarty D, Bihani SC, Banerjee M, Ballal A. Novel molecular insights into the anti-oxidative stress response and structure-function of a salt-inducible cyanobacterial Mn-catalase. PLANT, CELL & ENVIRONMENT 2019; 42:2508-2521. [PMID: 30993731 DOI: 10.1111/pce.13563] [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] [Received: 01/17/2019] [Accepted: 04/07/2019] [Indexed: 06/09/2023]
Abstract
KatB, a salt-inducible Mn-catalase, protects the cyanobacterium Anabaena from salinity/oxidative stress. In this report, we provide distinctive insights into the biological-biochemical function of KatB at the molecular level. Anabaena overexpressing the wild-type KatB protein (KatBWT) detoxified H2 O2 efficiently, showing reduced burden of reactive oxygen species compared with the strain overproducing KatBF2V (wherein F-2 is replaced by V). Correspondingly, the KatBWT protein also displayed several folds more activity than KatBF2V. Interestingly, the KatB variants with large hydrophobic amino acids (F/W/Y) were more compact, showed enhanced activity, and were resistant to thermal/chemical denaturation than variants with smaller residues (G/A/V) at the second position. X-ray crystallography-based analysis showed that F-2 was required for appropriate interactions between two subunits. These contacts provided stability to the hexamer, making it more compact. F-2, through its interaction with F-66 and W-43, formed the proper hydrophobic pocket that held the active site together. Consequently, only residues that supported activity (i.e., F/Y/W) were selected at the second position in Mn-catalases during evolution. This study (a) demonstrates that modification of nonactive site residues can alter the response of catalases to environmental stress and (b) has expanded the scope of amino acids that can be targeted for rational protein engineering in plants.
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Affiliation(s)
- Dhiman Chakravarty
- Molecular Biology Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
- Homi Bhabha National Institute, Anushakti Nagar, Mumbai, 400094, India
| | - Subhash C Bihani
- Radiation Biology & Health Sciences Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Manisha Banerjee
- Molecular Biology Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
- Homi Bhabha National Institute, Anushakti Nagar, Mumbai, 400094, India
| | - Anand Ballal
- Molecular Biology Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
- Homi Bhabha National Institute, Anushakti Nagar, Mumbai, 400094, India
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17
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Li H, Zhao Q, Huang H. Current states and challenges of salt-affected soil remediation by cyanobacteria. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 669:258-272. [PMID: 30878933 DOI: 10.1016/j.scitotenv.2019.03.104] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 02/23/2019] [Accepted: 03/07/2019] [Indexed: 06/09/2023]
Abstract
Natural and human activities lead to soil degradation and soil salinization. The decrease of farmlands threatens food security. There are approximately 1 billion ha salt-affected soils all over of world, which can be made available resources after chemical, physical and biological remediation. Nostoc, Anabaena and other cyanobacterial species have outstanding capabilities, such as the ability to fix nitrogen from the air, produce an extracellular matrix and produce compatible solutes. The remediation of salt-affected soil is a complex and difficult task. During the past years, much new research has been conducted that shows that cyanobacteria are effective for salt-affected soil remediation in laboratory studies and field trials. The related mechanisms for both salt tolerance and salt-affected soil remediation were also evaluated from the perspective of biochemistry, molecular biology and systems biology. The effect of cyanobacteria on salt-affected soil is related to nitrogen fixation and other mechanisms. There are complicated interactions among cyanobacteria, bacteria, fungi and the soil. The interaction between cyanobacteria and salt-tolerant plants should be considered if the cyanobacterium is utilized to improve the soil fertility in addition to performing soil remediation. It is critical to re-establish the micro-ecology in salt-affected soils and improve the salt affected soil remediation efficiency. The first challenge is the selection of suitable cyanobacterial strain. The co-culture of cyanobacteria and bacteria is also potential approach. The cultivation of cyanobacteria on a large scale should be optimized to improve productivity and decrease cost. The development of bio-remediating agents for salt-affected soil remediation also relies on other technical problems, such as harvesting and contamination control. The application of cyanobacteria in salt-affected soil remediation will reconstruct green agriculture and promote the sustainable development of human society.
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Affiliation(s)
- Han Li
- School of Pharmaceutical Science, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, People's Republic of China
| | - Quanyu Zhao
- School of Pharmaceutical Science, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, People's Republic of China.
| | - He Huang
- School of Pharmaceutical Science, Nanjing Tech University, No. 30 Puzhu South Road, Nanjing 211816, People's Republic of China; Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), People's Republic of China; State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5 Xinmofan Road, Nanjing 210009, People's Republic of China
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18
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Molecular and biochemical characterization of All0580 as a methylglyoxal detoxifying glyoxalase II of Anabaena sp. PCC7120 that confers abiotic stress tolerance in E. coli. Int J Biol Macromol 2019; 124:981-993. [DOI: 10.1016/j.ijbiomac.2018.11.172] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 11/17/2018] [Accepted: 11/17/2018] [Indexed: 12/13/2022]
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19
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Sen S, Rai R, Chatterjee A, Rai S, Yadav S, Agrawal C, Rai LC. Molecular characterization of two novel proteins All1122 and Alr0750 of Anabaena PCC 7120 conferring tolerance to multiple abiotic stresses in Escherichia coli. Gene 2019; 685:230-241. [PMID: 30448320 DOI: 10.1016/j.gene.2018.11.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 09/28/2018] [Accepted: 11/08/2018] [Indexed: 11/19/2022]
Abstract
In- silico and functional genomics approaches have been used to determine cellular functions of two hypothetical proteins All1122 and Alr0750 of Anabaena sp. PCC 7120. Motif analysis and multiple sequence alignment predicted them as typical α/β ATP binding universal stress family protein-A (UspA) with G-(2×)-G-(9×)-G(S/T) as conserved motif. qRT-PCR data under UV-B, NaCl, heat, As, CdCl2, mannitol and methyl viologen registered approximately 1.4 to 4.3 fold induction of all1122 and alr0750 thus confirming their multiple abiotic stress tolerance potential. The recombinant E. coli (BL21) cells harboring All1122 and Alr0750 showed 12-41% and 23-41% better growth respectively over wild type control under said abiotic stresses thus revalidating their stress coping ability. Functional complementation on heterologous expression in UspA mutant E. coli strain LN29MG1655 (ΔuspA::Kan) attested their UspA family membership. This study tempted us to suggest that recombinant Anabaena PCC 7120 over expressing all1122 and alr0750 might contribute to the nitrogen economy in paddy fields experiencing array of abiotic stresses including drought and nutrient limitation.
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Affiliation(s)
- Sonia Sen
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Ruchi Rai
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Antra Chatterjee
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Shweta Rai
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Shivam Yadav
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Chhavi Agrawal
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - L C Rai
- Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
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20
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Proteomic evaluation of the freshly isolated cyanobionts from Azolla microphylla exposed to salinity stress. Symbiosis 2018. [DOI: 10.1007/s13199-018-0586-8] [Citation(s) in RCA: 3] [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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21
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Kumari A, Pandey-Rai S. Enhanced arsenic tolerance and secondary metabolism by modulation of gene expression and proteome profile in Artemisia annua L. after application of exogenous salicylic acid. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 132:590-602. [PMID: 30326438 DOI: 10.1016/j.plaphy.2018.10.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 10/09/2018] [Accepted: 10/09/2018] [Indexed: 05/19/2023]
Abstract
This study was designed to investigate the effect of exogenous application of salicylic acid (SA) on proteins pattern and secondary metabolites in arsenic (As) stressed Artemisia annua. A. annua was treated by As 100 μM, SA 100 μM and combined treatment of SA 100 μM + As 100 μM upto 3 days. Significant accumulation of As was observed in roots than shoots at As 100 μM treatment. Under As treatment, oxidative stress was induced as indicated by increased TBARS content. Biomass, carotenoid, flavonoids were enhanced whereas total chlorophyll pigment was reduced under As treatment. Combined treatment of SA 100 μM + As 100 μM was more effective for increment of biomass, total chlorophyll content, and flavonoids as compared to As 100 μM treatment. Protein profiling revealed 20 differentially abundant proteins by 2-DE PAGE and MALDI-TOF-MS analysis. Identified proteins were related to photosynthesis, energy metabolism, transcriptional regulators, secondary metabolism, lipid metabolism, transport proteins and unknown/hypothetical proteins. All identified proteins were significantly increased in abundance under combined treatments of SA 100 μM + As 100 μM. The expression analysis of key genes involved in biosynthesis of lipid metabolism, signal molecule, transcriptional regulators, artemisinin biosynthetic genes, isoprenoids pathway, terpenes and flavonoids pathway were significantly upregulated under combined treatments of SA 100 μM + As 100 μM, suggesting a fine linkage in regulation of primary and secondary metabolism to modulate tolerance capacity and to improve phytoremediation property of A. annua against arsenic toxicity.
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Affiliation(s)
- Anjana Kumari
- Laboratory of Morphogenesis, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Shashi Pandey-Rai
- Laboratory of Morphogenesis, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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22
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Kureel MK, Geed SR, Rai BN, Singh RS. Novel investigation of the performance of continuous packed bed bioreactor (CPBBR) by isolated Bacillus sp. M4 and proteomic study. BIORESOURCE TECHNOLOGY 2018; 266:335-342. [PMID: 29982055 DOI: 10.1016/j.biortech.2018.06.064] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 06/16/2018] [Accepted: 06/20/2018] [Indexed: 06/08/2023]
Abstract
The present study reveals the benzene degrading potential of bacterial species isolated from petroleum contaminated soil. Genomic analysis suggests that Bacillus sp. M4 was found to be dominating species. The process parameters were optimized and found to be pH 7.0 ± 0.2, temperature 32 ± 5 °C, immobilization time (20 days) and benzene concentration 400 mg/L. The maximum removal efficiency of benzene was calculated and found to be 93.13% at elimination capacity156 (mg/L/day) and inlet loading rate 192 (mg/L/day) achieved in 54th days of operation. In the study, the residual metabolites were analyzed by GC/MS analysis and identified as benzene-1,2-diol. In order to identify the responsible protein involved in the process of benzene biodegradation The proteomic study was performed and proteins were identified by MALDI-TOF analysis. The molecular docking was confirmed by the benzene biodegradation.
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Affiliation(s)
- M K Kureel
- Department of Chemical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi, UP 221005, India
| | - S R Geed
- Department of Chemical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi, UP 221005, India
| | - B N Rai
- Department of Chemical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi, UP 221005, India
| | - R S Singh
- Department of Chemical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi, UP 221005, India.
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Singh PK, Wang W, Shrivastava AK. Cadmium-mediated morphological, biochemical and physiological tuning in three different Anabaena species. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 202:36-45. [PMID: 30007153 DOI: 10.1016/j.aquatox.2018.06.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Revised: 06/17/2018] [Accepted: 06/18/2018] [Indexed: 06/08/2023]
Abstract
Cyanobacteria are a natural inhabitant of paddy field and enhance the crop productivity in an eco-friendly manner. Cadmium (Cd) is a perilous trace metal element which not only limits the crop productivity but also inhibits the growth and nitrogen-fixing ability of these diazotrophs as well as the biodiversity of rice field semiaquatic agroecosystems. However, the impact of Cd toxicity in diazotrophic cyanobacteria is yet not adequately addressed. Therefore, in the present study, three diazotrophic cyanobacterial species, i.e., Anabaena sp. PCC7120, Anabaena L31, and Anabaena doliolum were subjected to their LC50 doses of Cd, and their physiological (PSII, Psi, respiration, energy status and nitrogen fixation rate), biochemical variables (such as antioxidant contents and antioxidant enzymes) together with morphological parameters were evaluated. The results of physiological variables suggested that the Cd exposure adversely affects the photosynthesis, respiration, and biological nitrogen fixation ability across three Anabaena species. The results of biochemical variables in terms of accumulation of antioxidants (glutathione, thiol, phytochelatin and proline) content as well as antioxidant enzymes such as glutathione S-transferase (GST), glutathione reductase (GR), catalase-peroxidase (CAT), ascorbate peroxidase (APX) and superoxide dismutase (SOD) revealed that their inter-species stress tolerance behavior may be attributed to the differential accumulation of antioxidants as well as differential antioxidant enzyme activity in three species. Furthermore, the enhanced antioxidant enzymes activity such as GST, GR, CAT, and SOD in Anabaena L31 advocated significantly higher as compared to Anabaena PCC7120 and Anabaena doliolum. In conclusion, Cd-toxicity assessment regarding physiological, biochemical and morphological aspects across three species identified Anabaena L31 as Cd-resistant species than the other two tested species, i.e., Anabaena PCC7120 and Anabaena doliolum.
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Affiliation(s)
- Prashant Kumar Singh
- Molecular Biology Section, Centre for Advanced Study in Botany, Banaras Hindu University, Varanasi, 221005, India; Department of Vegetables and Field Crops, Institute of Plant Sciences, Agricultural Research Organization - The Volcani Center, Rishon LeZion, 7505101, Israel; State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, School of Life Science, Henan University, Kaifeng, Henan 475004, PR China
| | - Wenjing Wang
- State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, School of Life Science, Henan University, Kaifeng, Henan 475004, PR China; Department of Biology and Food Sciences, Shangqiu Normal University, Shangqiu, Henan, 476000 PR China
| | - Alok Kumar Shrivastava
- Department of Botany, Mahatma Gandhi Central University, Motihari, 845401, Bihar, India.
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de Alvarenga LV, Vaz MGMV, Genuário DB, Esteves-Ferreira AA, Almeida AVM, de Castro NV, Lizieri C, Souza JJLL, Schaefer CEGR, Nunes-Nesi A, Araújo WL. Extending the ecological distribution of Desmonostoc genus: proposal of Desmonostoc salinum sp. nov., a novel Cyanobacteria from a saline-alkaline lake. Int J Syst Evol Microbiol 2018; 68:2770-2782. [PMID: 29985124 DOI: 10.1099/ijsem.0.002878] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Cyanobacteria is an ancient phylum of oxygenic photosynthetic microorganisms found in almost all environments of Earth. In recent years, the taxonomic placement of some cyanobacterial strains, including those belonging to the genus Nostocsensu lato, have been reevaluated by means of a polyphasic approach. Thus, 16S rRNA gene phylogeny and 16S-23S internal transcribed spacer (ITS) secondary structures coupled with morphological, ecological and physiological data are considered powerful tools for a better taxonomic and systematics resolution, leading to the description of novel genera and species. Additionally, underexplored and harsh environments, such as saline-alkaline lakes, have received special attention given they can be a source of novel cyanobacterial taxa. Here, a filamentous heterocytous strain, Nostocaceae CCM-UFV059, isolated from Laguna Amarga, Chile, was characterized applying the polyphasic approach; its fatty acid profile and physiological responses to salt (NaCl) were also determined. Morphologically, this strain was related to morphotypes of the Nostocsensu lato group, being phylogenetically placed into the typical cluster of the genus Desmonostoc. CCM-UFV059 showed identity of the 16S rRNA gene as well as 16S-23S secondary structures that did not match those from known described species of the genus Desmonostoc, as well as distinct ecological and physiological traits. Taken together, these data allowed the description of the first strain of a member of the genus Desmonostoc from a saline-alkaline lake, named Desmonostoc salinum sp. nov., under the provisions of the International Code of Nomenclature for algae, fungi and plants. This finding extends the ecological coverage of the genus Desmonostoc, contributing to a better understanding of cyanobacterial diversity and systematics.
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Affiliation(s)
- Luna Viggiano de Alvarenga
- 1Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,2Max Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Marcelo Gomes Marçal Vieira Vaz
- 1Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,2Max Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Diego Bonaldo Genuário
- 3Laboratório de Microbiologia Ambiental, EMBRAPA Meio Ambiente, 13820-000, Jaguariúna, São Paulo, Brazil
| | - Alberto A Esteves-Ferreira
- 1Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,2Max Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Allan V Martins Almeida
- 1Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,2Max Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Naira Valle de Castro
- 1Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,2Max Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Claudineia Lizieri
- 1Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,‡Present address: Instituto de Engenharia e Tecnologia, Centro Universitário de Belo Horizonte, UniBH, 30455-610, Belo Horizonte, Minas Gerais, Brazil
| | - José João L L Souza
- 4Departamento de Solos, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,5Departamento de Geografia, Universidade Federal do Rio Grande do Norte, 59300-000, Caicó, Rio Grande do Norte, Brazil
| | | | - Adriano Nunes-Nesi
- 1Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,2Max Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
| | - Wagner L Araújo
- 2Max Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil.,1Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 36570-900, Viçosa, Minas Gerais, Brazil
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Shen ZJ, Chen J, Ghoto K, Hu WJ, Gao GF, Luo MR, Li Z, Simon M, Zhu XY, Zheng HL. Proteomic analysis on mangrove plant Avicennia marina leaves reveals nitric oxide enhances the salt tolerance by up-regulating photosynthetic and energy metabolic protein expression. TREE PHYSIOLOGY 2018; 38:1605-1622. [PMID: 29917117 DOI: 10.1093/treephys/tpy058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 05/01/2018] [Indexed: 05/25/2023]
Affiliation(s)
- Zhi-jun Shen
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian, PR China
| | - Juan Chen
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian, PR China
- Key Laboratory of Integrated Regulation and Resource Department on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing, Jiangsu, PR China
| | - Kabir Ghoto
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian, PR China
| | - Wen-jun Hu
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian, PR China
- Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang, PR China
| | - Gui-feng Gao
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian, PR China
| | - Mei-rong Luo
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian, PR China
| | - Zan Li
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian, PR China
| | - Martin Simon
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian, PR China
| | - Xue-yi Zhu
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian, PR China
| | - Hai-lei Zheng
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen, Fujian, PR China
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Kruk C, Segura AM, Nogueira L, Alcántara I, Calliari D, Martínez de la Escalera G, Carballo C, Cabrera C, Sarthou F, Scavone P, Piccini C. A multilevel trait-based approach to the ecological performance of Microcystis aeruginosa complex from headwaters to the ocean. HARMFUL ALGAE 2017; 70:23-36. [PMID: 29169566 DOI: 10.1016/j.hal.2017.10.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 10/16/2017] [Accepted: 10/16/2017] [Indexed: 06/07/2023]
Abstract
The Microcystis aeruginosa complex (MAC) clusters cosmopolitan and conspicuous harmful bloom-forming cyanobacteria able to produce cyanotoxins. It is hypothesized that low temperatures and brackish salinities are the main barriers to MAC proliferation. Here, patterns at multiple levels of organization irrespective of taxonomic identity (i.e. a trait-based approach) were analyzed. MAC responses from the intracellular (e.g. respiratory activity) to the ecosystem level (e.g. blooms) were evaluated in wide environmental gradients. Experimental results on buoyancy and respiratory activity in response to increased salinity (0-35) and a literature review of maximum growth rates under different temperatures and salinities were combined with field sampling from headwaters (800km upstream) to the marine end of the Rio de la Plata estuary (Uruguay-South America). Salinity and temperature were the major variables affecting MAC responses. Experimentally, freshwater MAC cells remained active for 24h in brackish waters (salinity=15) while colonies increased their flotation velocity. At the population level, maximum growth rate decreased with salinity and presented a unimodal exponential response with temperature, showing an optimum at 27.5°C and a rapid decrease thereafter. At the community and ecosystem levels, MAC occurred from fresh to marine waters (salinity 30) with a sustained relative increase of large mucilaginous colonies biovolume with respect to individual cells. Similarly, total biomass and, specific and morphological richness decreased with salinity while blooms were only detected in freshwater both at high (33°C) and low (11°C) temperatures. In brackish waters, large mucilaginous colonies presented advantages under osmotic restrictive conditions. These traits values have also been associated with higher toxicity potential. This suggest salinity or low temperatures would not represent effective barriers for the survival and transport of potentially toxic MAC under likely near future scenarios of increasing human impacts (i.e. eutrophication, dam construction and climate change).
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Affiliation(s)
- Carla Kruk
- Ecología Funcional de Sistemas Acuáticos, Centro Universitario Regional Este-Rocha, Universidad de la República, Uruguay; Sección Limnología, IECA, Facultad de Ciencias, Universidad de la República, Uruguay.
| | - Angel M Segura
- Modelización y Análisis de Recursos Naturales, Centro Universitario Regional Este-Rocha, Universidad de la República, Uruguay
| | - Lucía Nogueira
- Sección Limnología, IECA, Facultad de Ciencias, Universidad de la República, Uruguay
| | - Ignacio Alcántara
- Sección Limnología, IECA, Facultad de Ciencias, Universidad de la República, Uruguay; Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, MEC, Uruguay
| | - Danilo Calliari
- Ecología Funcional de Sistemas Acuáticos, Centro Universitario Regional Este-Rocha, Universidad de la República, Uruguay; Oceanografía, IECA, Facultad de Ciencias, Universidad de la República, Uruguay
| | | | - Carmela Carballo
- Ecología Funcional de Sistemas Acuáticos, Centro Universitario Regional Este-Rocha, Universidad de la República, Uruguay; Sección Limnología, IECA, Facultad de Ciencias, Universidad de la República, Uruguay
| | - Carolina Cabrera
- Ecología Funcional de Sistemas Acuáticos, Centro Universitario Regional Este-Rocha, Universidad de la República, Uruguay; Sección Limnología, IECA, Facultad de Ciencias, Universidad de la República, Uruguay
| | - Florencia Sarthou
- Ecología Funcional de Sistemas Acuáticos, Centro Universitario Regional Este-Rocha, Universidad de la República, Uruguay; Sección Limnología, IECA, Facultad de Ciencias, Universidad de la República, Uruguay
| | - Paola Scavone
- Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, MEC, Uruguay
| | - Claudia Piccini
- Departamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, MEC, Uruguay
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Sen S, Rai S, Yadav S, Agrawal C, Rai R, Chatterjee A, Rai L. Dehydration and rehydration - induced temporal changes in cytosolic and membrane proteome of the nitrogen fixing cyanobacterium Anabaena sp. PCC 7120. ALGAL RES 2017. [DOI: 10.1016/j.algal.2017.09.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Zheng Z, Gao S, He Y, Li Z, Li Y, Cai X, Gu W, Wang G. The enhancement of the oxidative pentose phosphate pathway maybe involved in resolving imbalance between photosystem I and II in Dunaliella salina. ALGAL RES 2017. [DOI: 10.1016/j.algal.2017.07.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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29
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The molecular mechanism and post-transcriptional regulation characteristic of Tetragenococcus halophilus acclimation to osmotic stress revealed by quantitative proteomics. J Proteomics 2017; 168:1-14. [DOI: 10.1016/j.jprot.2017.08.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Revised: 07/31/2017] [Accepted: 08/18/2017] [Indexed: 12/26/2022]
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30
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Wang X, Hao TB, Balamurugan S, Yang WD, Liu JS, Dong HP, Li HY. A lipid droplet-associated protein involved in lipid droplet biogenesis and triacylglycerol accumulation in the oleaginous microalga Phaeodactylum tricornutum. ALGAL RES 2017. [DOI: 10.1016/j.algal.2017.07.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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31
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Proteome dynamics and physiological responses to short-term salt stress in Leymus chinensis leaves. PLoS One 2017; 12:e0183615. [PMID: 28846722 PMCID: PMC5573290 DOI: 10.1371/journal.pone.0183615] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 08/08/2017] [Indexed: 01/01/2023] Open
Abstract
Salt stress is becoming an increasing threat to global agriculture. In this study, physiological and proteomics analysis were performed using a salt-tolerant grass species, Leymus chinensis (L. chinensis). The aim of this study is to understand the potential mechanism of salt tolerance in L. chinensis that used for crop molecular breeding. A series of short-term (<48 h) NaCl treatments (0 ~ 700 mM) were conducted. Physiological data indicated that the root and leaves growth were inhibited, chlorophyll contents decreased, while hydraulic conductivity, proline, sugar and sucrose were accumulated under salt stress. For proteomic analysis, we obtained 274 differentially expressed proteins in response to NaCl treatments. GO analysis revealed that 44 out of 274 proteins are involved in the biosynthesis of amino acids and carbon metabolism. Our findings suggested that L. chinensis copes with salt stress by stimulating the activities of POD, SOD and CAT enzymes, speeding up the reactions of later steps of citrate cycle, and synthesis of proline and sugar. In agreement with our physiological data, proteomic analysis also showed that salt stress depress the expression of photosystem relevant proteins, Calvin cycle, and chloroplast biosynthesis.
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Luo Q, Peng M, Zhang X, Lei P, Ji X, Chow W, Meng F, Sun G. Comparative mitochondrial proteomic, physiological, biochemical and ultrastructural profiling reveal factors underpinning salt tolerance in tetraploid black locust (Robinia pseudoacacia L.). BMC Genomics 2017; 18:648. [PMID: 28830360 PMCID: PMC5568289 DOI: 10.1186/s12864-017-4038-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 08/08/2017] [Indexed: 01/21/2023] Open
Abstract
Background Polyploidy is an important phenomenon in plants because of its roles in agricultural and forestry production as well as in plant tolerance to environmental stresses. Tetraploid black locust (Robinia pseudoacacia L.) is a polyploid plant and a pioneer tree species due to its wide ranging adaptability to adverse environments. To evaluate the ploidy-dependent differences in leaf mitochondria between diploid and tetraploid black locust under salinity stress, we conducted comparative proteomic, physiological, biochemical and ultrastructural profiling of mitochondria from leaves. Results Mitochondrial proteomic analysis was performed with 2-DE and MALDI-TOF-MS, and the ultrastructure of leaf mitochondria was observed by transmission electron microscopy. According to 2-DE analysis, 66 proteins that responded to salinity stress significantly were identified from diploid and/or tetraploid plants and classified into 9 functional categories. Assays of physiological characters indicated that tetraploids were more tolerant to salinity stress than diploids. The mitochondrial ultrastructure of diploids was damaged more severely under salinity stress than that of tetraploids. Conclusions Tetraploid black locust possessed more tolerance of, and ability to acclimate to, salinity stress than diploids, which may be attributable to the ability to maintain mitochondrial structure and to trigger different expression patterns of mitochondrial proteins during salinity stress. Electronic supplementary material The online version of this article (doi:10.1186/s12864-017-4038-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Qiuxiang Luo
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.,Key Laboratory of Saline-alkali Vegetation Ecology Restoration in Oil Field (SAVER), Ministry of Education, Alkali Soil Natural Environmental Science Center (ASNESC), Northeast Forestry University, Harbin, China
| | - Mu Peng
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.,Key Laboratory of Saline-alkali Vegetation Ecology Restoration in Oil Field (SAVER), Ministry of Education, Alkali Soil Natural Environmental Science Center (ASNESC), Northeast Forestry University, Harbin, China
| | - Xiuli Zhang
- College of Life Science, Northeast Forestry University, Harbin, 150040, China
| | - Pei Lei
- College of Life Science, Northeast Forestry University, Harbin, 150040, China
| | - Ximei Ji
- College of Life Science, Northeast Forestry University, Harbin, 150040, China
| | - Wahsoon Chow
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.,Division of Plant Science, Research School of Biology, The Australian National University, ACT, 2601, Australia
| | - Fanjuan Meng
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.
| | - Guanyu Sun
- College of Life Science, Northeast Forestry University, Harbin, 150040, China.
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Chaurasia N, Mishra Y, Chatterjee A, Rai R, Yadav S, Rai LC. Overexpression of phytochelatin synthase (pcs) enhances abiotic stress tolerance by altering the proteome of transformed Anabaena sp. PCC 7120. PROTOPLASMA 2017; 254:1715-1724. [PMID: 28000119 DOI: 10.1007/s00709-016-1059-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Accepted: 12/02/2016] [Indexed: 06/06/2023]
Abstract
The present study provides data on the insertion of an extra copy of phytochelatin synthase (alr0975) in Anabaena sp. PCC 7120. The recombinant strain (AnFPN-pcs) compared to wild type showed approximately 22.3% increase in growth rate under UV-B, NaCl, heat, CuCl2, carbofuran, and CdCl2. It also registered 2.25-fold enhanced nitrogenase activity and 5-fold higher phytochelatin production. A comparison of the protein profile of wild type with the recombinant strain revealed that recombinant strain accumulated proteins belonging to the following categories: (i) detoxification (nutrient stress induced DNA binding protein, Mn-SOD, Alr0946 (CalA)), (ii) protein folding and modification (molecular chaperone DnaK, FKBP-type peptidyl-prolyl cis-trans isomerase), (iii) nucleotide and amino acid biosynthesis (dihydroorotase and Ketol-acid reductoisomerase), (iv) photosynthesis and respiration (coproporphyrinogen III oxidase, phycocyanin alpha chain, ferredoxin-NADP+ reductase), and (v) transport (sugar transport ATP-binding protein). Thus, it can be concluded that, above category proteins with their respective role in scavenging reactive oxygen species, proper folding of unfolded proteins, and protection of protein from degradation, sustained carbon fixation and energy pool and active transport of sugar together conceivably help the recombinant cyanobacterium (AnFPN-pcs) to cope with abiotic stress employed in the present study. Such recombinant strains have potential for future use as biofertilizer.
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Affiliation(s)
- Neha Chaurasia
- Molecular Biology Section, Laboratory of Algal Biology, Center of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
- Department of Biotechnology and Bioinformatics, North Eastern Hill University, Shillong, 793022, India
| | - Yogesh Mishra
- Molecular Biology Section, Laboratory of Algal Biology, Center of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Antra Chatterjee
- Molecular Biology Section, Laboratory of Algal Biology, Center of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Ruchi Rai
- Molecular Biology Section, Laboratory of Algal Biology, Center of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Shivam Yadav
- Molecular Biology Section, Laboratory of Algal Biology, Center of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - L C Rai
- Molecular Biology Section, Laboratory of Algal Biology, Center of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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Singh S, Shrivastava AK. In silico characterization and transcriptomic analysis of nif family genes from Anabaena sp. PCC7120. Cell Biol Toxicol 2017; 33:467-482. [DOI: 10.1007/s10565-017-9388-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 02/13/2017] [Indexed: 12/12/2022]
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35
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Identification and functional characterization of four novel aldo/keto reductases in Anabaena sp. PCC 7120 by integrating wet lab with in silico approaches. Funct Integr Genomics 2017; 17:413-425. [DOI: 10.1007/s10142-017-0547-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 01/12/2017] [Accepted: 01/30/2017] [Indexed: 01/30/2023]
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36
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Thagela P, Yadav RK, Mishra V, Tripathi K, Ahmad A, Dahuja A, Singh PK, Abraham G. Sample preparation method for tissue based proteomic analysis of Azolla microphylla. Symbiosis 2016. [DOI: 10.1007/s13199-016-0463-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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37
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Singh PK, Shrivastava AK, Singh S, Rai R, Chatterjee A, Rai LC. Alr2954 of Anabaena sp. PCC 7120 with ADP-ribose pyrophosphatase activity bestows abiotic stress tolerance in Escherichia coli. Funct Integr Genomics 2016; 17:39-52. [PMID: 27778111 DOI: 10.1007/s10142-016-0531-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 10/07/2016] [Accepted: 10/10/2016] [Indexed: 01/23/2023]
Abstract
In silico derived properties on experimental validation revealed that hypothetical protein Alr2954 of Anabaena sp. PCC7120 is ADP-ribose pyrophosphatase, which belongs to nudix hydrolase superfamily. Presence of ADP-ribose binding site was attested by ADP-ribose pyrophosphatase activity (K m 44.71 ± 8.043 mM, V max 7.128 ± 0.417 μmol min-1 mg protein-1, and K cat/K m 9.438 × 104 μM-1 min-1). Besides ADP-ribose, the enzyme efficiently hydrolyzed various nucleoside phosphatases such as 8-oxo-dGDP, 8-oxo-dADP, 8-oxo-dGTP, 8-oxo-dATP, GDP-mannose, ADP-glucose, and NADH. qRT-PCR analysis of alr2954 showed significant expression under different abiotic stresses reconfirming its role in stress tolerance. Thus, Alr2954 qualifies to be a member of nudix hydrolase superfamily, which serves as ADP-ribose pyrophosphatase and assists in multiple abiotic stress tolerance.
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Affiliation(s)
- Prashant Kumar Singh
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Alok Kumar Shrivastava
- Department of Chemical Engineering, Indian Institute of Technology, Banaras Hindu University, Vranasi, 221005, India
| | - Shilpi Singh
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Ruchi Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Antra Chatterjee
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - L C Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
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Yadav RK, Tripathi K, Ramteke PW, Varghese E, Abraham G. Salinity induced physiological and biochemical changes in the freshly separated cyanobionts of Azolla microphylla and Azolla caroliniana. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 106:39-45. [PMID: 27135817 DOI: 10.1016/j.plaphy.2016.04.031] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 04/16/2016] [Accepted: 04/16/2016] [Indexed: 06/05/2023]
Abstract
Freshly separated cyanobionts of Azolla microphylla and Azolla caroliniana plants exposed to salinity showed decline in the cellular constituents such as chlorophyll (23.1 and 38.9%) and protein (12.9 and 19.3%). However, an increase in the carotenoid and sugar content was observed. Exposure to salinity stress reduced the heterocyst frequency (35.4 and 57.2%) and nitrogenase activity (37.7 and 46.3%) of the cyanobionts. Increase in the activity of antioxidant enzymes such as super oxide dismutase (50.6 and 11.5%), ascorbate peroxidase (63.7 and 57.9%), catalase (94.2 and 22.5%) as well as non-enzymatic antioxidant proline (18.8 and 13.3%) was also observed in response to salinity. The cyanobionts exhibited significant increase in the intracellular Na(+) level and reduced intracellular K(+)/Na(+) and Ca(2+)/Na(+) ratio in response to salinity. The results demonstrate the adverse impact of salinity on the freshly separated cyanobionts as similar to free living cyanobacteria. These results may be helpful in the critical evaluation of salinity tolerance mechanism of the cyanobiont and its interaction with the host.
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Affiliation(s)
- Ravindra Kumar Yadav
- Centre for Conservation and Utilization of BGA, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
| | - Keshawanand Tripathi
- Centre for Conservation and Utilization of BGA, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
| | - Pramod Wasudeo Ramteke
- Department of Biological Sciences, Sam Higginbottom Institute of Agriculture Technology and Sciences, Allahabad, U.P 211007, India
| | - Eldho Varghese
- Division of Design of Experiments, ICAR-Indian Agricultural Statistics Research Institute, New Delhi 110012, India
| | - Gerard Abraham
- Centre for Conservation and Utilization of BGA, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India.
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Shrivastava AK, Pandey S, Dietz KJ, Singh PK, Singh S, Rai R, Rai LC. Overexpression of AhpC enhances stress tolerance and N2-fixation in Anabaena by upregulating stress responsive genes. Biochim Biophys Acta Gen Subj 2016; 1860:2576-2588. [PMID: 27487031 DOI: 10.1016/j.bbagen.2016.07.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 07/18/2016] [Accepted: 07/28/2016] [Indexed: 02/07/2023]
Abstract
The study explores the significance of peroxides in regulating the CO2- and N2-fixation capacities in Anabaena sp. PCC7120. To this end Anabaena strains were generated carrying an extra copy of ahpC (An+ahpC) or by deleting from their endogenous functional ahpC (AnΔahpC). AhpC levels were 2.2- to 6.0-fold higher in An+ahpC than in wild type. An+ahpC revealed 1.4- to 2-fold upregulation of photosystems I and II, nitrogenase, superoxide dismutase and catalase activities while same activities were 1.3- to 2.5-fold downregulated in the insertional mutant (AnΔahpC) compared to the wild type. Peroxide, superoxide and malondialdehyde contents were low in An+ahpC and high in AnΔahpC. Growth was inhibited in AnΔahpC by approximately 40-60% compared to a 33-40% enhanced growth in An+ahpC under selected stresses. Most interestingly, heterocyst frequency was increased in An+ahpC. In order to address transcriptional and posttranscriptional effects, transcripts of genes including groEL, fld, kat, gor, gst, dps, bfr, tf, sodA, dnaK, prx, uspA, pcs and apx were quantified and found to be increased 1.33- to 7.70-fold in unstressed and 1.76- to 13.80-fold in stressed An+ahpC. In a converse manner, they were downregulated by 1.20- to 7.50-fold in unstressed and 1.23 to 10.20-fold in stressed AnΔahpC. It is concluded that the level of AhpC controls a major set of metabolic and developmental genes in normal and stress conditions and thus likely is in the core of the redox regulatory system of Anabaena.
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Affiliation(s)
- Alok Kumar Shrivastava
- Department of Chemical Engineering, IIT, Banaras Hindu University, Varanasi-221005, India
| | - Sarita Pandey
- Cyanobacterial Stress Biology & Biotechnology Section, Molecular Biology Division, BARC, Mumbai-400094, India
| | - Karl Josef Dietz
- Department of Biochemistry and Physiology of Plants, Faculty of Biology, University of Bielefeld, Bielefeld - 100131, Germany
| | - Prashant Kumar Singh
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Shilpi Singh
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Ruchi Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Lal Chand Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India.
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Yadav RK, Thagela P, Tripathi K, Abraham G. Physiological and proteomic analysis of salinity tolerance of the halotolerant cyanobacterium Anabaena sp. World J Microbiol Biotechnol 2016; 32:147. [PMID: 27430514 DOI: 10.1007/s11274-016-2098-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 06/15/2016] [Indexed: 12/12/2022]
Abstract
The halotolerant cyanobacterium Anabaena sp was grown under NaCl concentration of 0, 170 and 515 mM and physiological and proteomic analysis was performed. At 515 mM NaCl the cyanobacterium showed reduced photosynthetic activities and significant increase in soluble sugar content, proline and SOD activity. On the other hand Anabaena sp grown at 170 mM NaCl showed optimal growth, photosynthetic activities and comparatively low soluble sugar content, proline accumulation and SOD activity. The intracellular Na(+) content of the cells increased both at 170 and 515 mM NaCl. In contrast, the K(+) content of the cyanobacterium Anabaena sp remained stable in response to growth at identical concentration of NaCl. While cells grown at 170 mM NaCl showed highest intracellular K(+)/Na(+) ratio, salinity level of 515 mM NaCl resulted in reduced ratio of K(+)/Na(+). Proteomic analysis revealed 50 salt-responsive proteins in the cyanobacterium Anabaena sp under salt treatment compared with control. Ten protein spots were subjected to MALDI-TOF-MS/MS analysis and the identified proteins are involved in photosynthesis, protein folding, cell organization and energy metabolism. Differential expression of proteins related to photosynthesis, energy metabolism was observed in Anabaena sp grown at 170 mM NaCl. At 170 mM NaCl increased expression of photosynthesis related proteins and effective osmotic adjustment through increased antioxidant enzymes and modulation of intracellular ions contributed to better salinity tolerance and optimal growth. On the contrary, increased intracellular Na(+) content coupled with down regulation of photosynthetic and energy related proteins resulted in reduced growth at 515 mM NaCl. Therefore reduced growth at 515 mM NaCl could be due to accumulation of Na(+) ions and requirement to maintain higher organic osmolytes and antioxidants which is energy intensive. The results thus show that the basis of salt tolerance is different when the halotolerant cyanobacterium Anabaena sp is grown under low and high salinity levels.
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Affiliation(s)
- Ravindra Kumar Yadav
- Centre for Conservation and Utilization of BGA, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Preeti Thagela
- Centre for Conservation and Utilization of BGA, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - Keshawanand Tripathi
- Centre for Conservation and Utilization of BGA, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
| | - G Abraham
- Centre for Conservation and Utilization of BGA, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
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An Y, Zhou H, Zhong M, Sun J, Shu S, Shao Q, Guo S. Root proteomics reveals cucumber 24-epibrassinolide responses under Ca(NO3)2 stress. PLANT CELL REPORTS 2016; 35:1081-101. [PMID: 26931454 DOI: 10.1007/s00299-016-1940-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Accepted: 01/24/2016] [Indexed: 05/04/2023]
Abstract
The application of exogenous 24-epibrassinolide promotes Brassinosteroids intracellular signalling in cucumber, which leads to differentially expressed proteins that participate in different life process to relieve Ca(NO 3 ) 2 damage. NO3 (-) and Ca(2+) are the main anion and cation of soil secondary salinization during greenhouse cultivation. Brassinosteroids (BRs), steroidal phytohormones, regulate various important physiological and developmental processes and are used against abiotic stress. A two-dimensional electrophoresis gel coupled with MALDI-TOF/TOF MS was performed to investigate the effects of exogenous 24-epibrassinolide (EBL) on proteomic changes in cucumber seedling roots under Ca(NO3)2 stress. A total of 80 differentially accumulated protein spots in response to stress and/or exogenous EBL were identified and grouped into different categories of biological processes according to Gene Ontology. Under Ca(NO3)2 stress, proteins related to nitrogen metabolism and lignin biosynthesis were induced, while those related to cytoskeleton organization and cell-wall neutral sugar metabolism were inhibited. However, the accumulation of abundant proteins involved in protein modification and degradation, defence mechanisms against antioxidation and detoxification and lignin biosynthesis by exogenous EBL might play important roles in salt tolerance. Real-time quantitative PCR was performed to investigate BR signalling. BR signalling was induced intracellularly under Ca(NO3)2 stress. Exogenous EBL can alleviate the root indices, effectively reduce the Ca(2+) content and increase the K(+) content in cucumber roots under Ca(NO3)2 stress. This study revealed the differentially expressed proteins and BR signalling-associated mRNAs induced by EBL in cucumber seedling roots under Ca(NO3)2 stress, providing a better understanding of EBL-induced salt resistance in cucumber seedlings. The mechanism for alleviation provides valuable insight into improving Ca(NO3)2 stress tolerance of other horticultural plants.
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Affiliation(s)
- Yahong An
- College of Horticulture, Nanjing Agriculture University, Nanjing, 210095, People's Republic of China
- Nanjing Agricultural University (Suqian) Academy of Protected Horticulture, Suqian, 223800, People's Republic of China
- Jiangsu Province Engineering Lab for Modern Facility Agriculture Technology and Equipment, Nanjing, 210095, People's Republic of China
| | - Heng Zhou
- College of Horticulture, Nanjing Agriculture University, Nanjing, 210095, People's Republic of China
- Nanjing Agricultural University (Suqian) Academy of Protected Horticulture, Suqian, 223800, People's Republic of China
- Jiangsu Province Engineering Lab for Modern Facility Agriculture Technology and Equipment, Nanjing, 210095, People's Republic of China
| | - Min Zhong
- College of Horticulture, Nanjing Agriculture University, Nanjing, 210095, People's Republic of China
- Nanjing Agricultural University (Suqian) Academy of Protected Horticulture, Suqian, 223800, People's Republic of China
- Jiangsu Province Engineering Lab for Modern Facility Agriculture Technology and Equipment, Nanjing, 210095, People's Republic of China
| | - Jin Sun
- College of Horticulture, Nanjing Agriculture University, Nanjing, 210095, People's Republic of China
- Nanjing Agricultural University (Suqian) Academy of Protected Horticulture, Suqian, 223800, People's Republic of China
- Jiangsu Province Engineering Lab for Modern Facility Agriculture Technology and Equipment, Nanjing, 210095, People's Republic of China
| | - Sheng Shu
- College of Horticulture, Nanjing Agriculture University, Nanjing, 210095, People's Republic of China
- Nanjing Agricultural University (Suqian) Academy of Protected Horticulture, Suqian, 223800, People's Republic of China
- Jiangsu Province Engineering Lab for Modern Facility Agriculture Technology and Equipment, Nanjing, 210095, People's Republic of China
| | - Qiaosai Shao
- College of Horticulture, Nanjing Agriculture University, Nanjing, 210095, People's Republic of China
- Nanjing Agricultural University (Suqian) Academy of Protected Horticulture, Suqian, 223800, People's Republic of China
- Jiangsu Province Engineering Lab for Modern Facility Agriculture Technology and Equipment, Nanjing, 210095, People's Republic of China
| | - Shirong Guo
- College of Horticulture, Nanjing Agriculture University, Nanjing, 210095, People's Republic of China.
- Nanjing Agricultural University (Suqian) Academy of Protected Horticulture, Suqian, 223800, People's Republic of China.
- Jiangsu Province Engineering Lab for Modern Facility Agriculture Technology and Equipment, Nanjing, 210095, People's Republic of China.
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Shrivastava AK, Pandey S, Yadav S, Mishra Y, Singh PK, Rai R, Singh S, Rai S, Rai LC. Comparative proteomics of wild type, An+ahpC and An∆ahpC strains of Anabaena sp. PCC7120 demonstrates AhpC mediated augmentation of photosynthesis, N2-fixation and modulation of regulatory network of antioxidative proteins. J Proteomics 2016; 140:81-99. [PMID: 27102494 DOI: 10.1016/j.jprot.2016.04.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 04/04/2016] [Accepted: 04/06/2016] [Indexed: 12/30/2022]
Abstract
UNLABELLED Alkylhydroperoxide reductase (AhpC), a 1-Cys peroxiredoxin is well known for maintaining the cellular homeostasis. Present study employs proteome approach to analyze and compare alterations in proteome of Anabaena PCC7120 in overexpressing (An+ahpC), deletion (An∆ahpC) and its wild type. 2-DE based analysis revealed that the major portion of identified protein belongs to energy metabolism, protein folding, modification and stress related proteins and carbohydrate metabolism. The two major traits discernible from An+ahpC were (i) augmentation of photosynthesis and nitrogen fixation (ii) modulation of regulatory network of antioxidative proteins. Increased accumulation of proteins of light reaction, dark reaction, pentose phosphate pathway and electron transfer agent FDX for nitrogenase in An+ahpC and their simultaneous downregulation in AnΔahpC demonstrates its role in augmenting photosynthesis and nitrogen fixation. Proteomic data was nicely corroborated with physiological, biochemical parameters displaying upregulation of nitrogenase (1.6 fold) PSI (1.08) and PSII (2.137) in An+ahpC. Furthermore, in silico analysis not only attested association of AhpC with peroxiredoxins but also with other players of antioxidative defense system viz. thioredoxin and thioredoxin reductase. Above mentioned findings are in agreement with 33-40% and 40-60% better growth performance of An+ahpC over wild type and An∆ahpC respectively under abiotic stresses, suggesting its role in maintenance of metabolic machinery under stress. SIGNIFICANCE Present work explores key role of AhpC in mitigating stress in Anabaena PCC7120 through combined proteomic, biochemical and in silico investigations. This study is the first attempt to analyze and compare alterations in proteome of Anabaena PCC7120 following addition (overexpressing strain An+ahpC) and deletion (mutant An∆ahpC) of AhpC against its wild type. The effort resulted in two major traits in An+ahpC as (i) augmentation of photosynthesis and nitrogen fixation (ii) modulation of regulatory network of antioxidative proteins.
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Affiliation(s)
- Alok K Shrivastava
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Sarita Pandey
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Shivam Yadav
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Yogesh Mishra
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Prashant K Singh
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Ruchi Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Shilpi Singh
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - Snigdha Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
| | - L C Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India
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Gao S, Zheng Z, Huan L, Wang G. G6PDH activity highlights the operation of the cyclic electron flow around PSI in Physcomitrella patens during salt stress. Sci Rep 2016; 6:21245. [PMID: 26887288 PMCID: PMC4758081 DOI: 10.1038/srep21245] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 01/07/2016] [Indexed: 12/22/2022] Open
Abstract
Photosynthetic performances and glucose-6-phosphate dehydrogenase (G6PDH) activity in Physcomitrella patens changed greatly during salt stress and recovery. In P. patens, the cyclic electron flow around photosystem (PS) I was much more tolerant to high salt stress than PSII. After high salt stress, the PSII activity recovered much more slowly than that of PSI, which was rapidly restored to pretreatment levels even as PSII was almost inactivate. This result suggested that after salt stress the recovery of the cyclic electron flow around PSI was independent of PSII activity. In addition, G6PDH activity and NADPH content increased under high salt stress. When G6PDH activity was inhibited by glucosamine (Glucm, a G6PDH inhibitor), the cyclic electron flow around PSI and the NADPH content decreased significantly. Additionally, after recovery in liquid medium containing Glucm, the PSI activity was much lower than in liquid medium without Glucm. These results suggested the PSI activity was affected significantly by G6PDH activity and the NADPH content. Based on the above results, we propose that G6PDH in P. patens has a close relationship with the photosynthetic process, possibly providing NADPH for the operation of the cyclic electron flow around PSI during salt stress and promoting the restoration of PSI.
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Affiliation(s)
- Shan Gao
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Zhenbing Zheng
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Li Huan
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Guangce Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China.,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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Yousuf PY, Ahmad A, Ganie AH, Iqbal M. Salt stress-induced modulations in the shoot proteome of Brassica juncea genotypes. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:2391-2401. [PMID: 26416121 DOI: 10.1007/s11356-015-5441-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 09/15/2015] [Indexed: 06/05/2023]
Abstract
Indian mustard [Brassica juncea (L.) Czern and Coss] is cultivated mainly in the northwestern agroclimatic region of India and suffers huge losses in productivity due to salinization. In an effort to figure out adaptation strategies of Indian mustard to salt stress, we conducted a comparative proteome analysis of shoots of its two genotypes, with contrasting sensitivity to salt stress. Differential expression of 21 proteins was observed during the two-dimensional electrophoresis (2DE). The identified salt-stress-responsive proteins were associated with different functional processes including osmoregulation, photosynthesis, carbohydrate metabolism, ion homeostasis, protein synthesis and stabilization, energy metabolism, and antioxidant defense system. Salt-tolerant genotype (CS-52) showed a relatively higher expression of proteins involved in turgor regulation, stabilization of photosystems and proteins, and salt compartmentalization, as compared to salt-sensitive genotype (Pusa Varuna). Our results suggest that modulating the expression of salt-responsive proteins can pave the way for developing salt tolerance in the Indian mustard plants.
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Affiliation(s)
- Peerzada Yasir Yousuf
- Molecular Ecology Laboratory, Department of Botany, Jamia Hamdard, New Delhi, 110062, India
| | - Altaf Ahmad
- Molecular Ecology Laboratory, Department of Botany, Jamia Hamdard, New Delhi, 110062, India
| | - Arshid Hussain Ganie
- Molecular Ecology Laboratory, Department of Botany, Jamia Hamdard, New Delhi, 110062, India
| | - Muhammad Iqbal
- Molecular Ecology Laboratory, Department of Botany, Jamia Hamdard, New Delhi, 110062, India.
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D'Agostino PM, Song X, Neilan BA, Moffitt MC. Proteogenomics of a saxitoxin-producing and non-toxic strain ofAnabaena circinalis(cyanobacteria) in response to extracellular NaCl and phosphate depletion. Environ Microbiol 2016; 18:461-76. [DOI: 10.1111/1462-2920.13131] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Revised: 11/10/2015] [Accepted: 11/10/2015] [Indexed: 11/30/2022]
Affiliation(s)
- Paul M. D'Agostino
- School of Biotechnology and Biomolecular Sciences; University of New South Wales; NSW 2052 Australia
- School of Science and Health; Western Sydney University; Campbelltown NSW 2560 Australia
| | - Xiaomin Song
- Australian Proteomics Analysis Facility; Macquarie University; Macquarie Park NSW 2109 Australia
| | - Brett A. Neilan
- School of Biotechnology and Biomolecular Sciences; University of New South Wales; NSW 2052 Australia
| | - Michelle C. Moffitt
- School of Science and Health; Western Sydney University; Campbelltown NSW 2560 Australia
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Proteome Dynamics and Physiological Responses to Short-Term Salt Stress in Brassica napus Leaves. PLoS One 2015; 10:e0144808. [PMID: 26691228 PMCID: PMC4686907 DOI: 10.1371/journal.pone.0144808] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 11/24/2015] [Indexed: 11/29/2022] Open
Abstract
Salt stress limits plant growth and crop productivity and is an increasing threat to agriculture worldwide. In this study, proteomic and physiological responses of Brassica napus leaves under salt stress were investigated. Seedlings under salt treatment showed growth inhibition and photosynthesis reduction. A comparative proteomic analysis of seedling leaves exposed to 200 mM NaCl for 24 h, 48 h and 72 h was conducted. Forty-four protein spots were differentially accumulated upon NaCl treatment and 42 of them were identified, including several novel salt-responsive proteins. To determine the functional roles of these proteins in salt adaptation, their dynamic changes in abundance were analyzed. The results suggested that the up-accumulated proteins, which were associated with protein metabolism, damage repair and defense response, might contribute to the alleviation of the deleterious effect of salt stress on chlorophyll biosynthesis, photosynthesis, energy synthesis and respiration in Brassica napus leaves. This study will lead to a better understanding of the molecular basis of salt stress adaptation in Brassica napus and provides a basis for genetic engineering of plants with improved salt tolerance in the future.
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Battchikova N, Angeleri M, Aro EM. Proteomic approaches in research of cyanobacterial photosynthesis. PHOTOSYNTHESIS RESEARCH 2015; 126:47-70. [PMID: 25359503 DOI: 10.1007/s11120-014-0050-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 10/18/2014] [Indexed: 05/03/2023]
Abstract
Oxygenic photosynthesis in cyanobacteria, algae, and plants is carried out by a fabulous pigment-protein machinery that is amazingly complicated in structure and function. Many different approaches have been undertaken to characterize the most important aspects of photosynthesis, and proteomics has become the essential component in this research. Here we describe various methods which have been used in proteomic research of cyanobacteria, and demonstrate how proteomics is implemented into on-going studies of photosynthesis in cyanobacterial cells.
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Affiliation(s)
- Natalia Battchikova
- Laboratory of Molecular Plant Biology, Department of Biochemistry, University of Turku, 20014, Turku, Finland.
| | - Martina Angeleri
- Laboratory of Molecular Plant Biology, Department of Biochemistry, University of Turku, 20014, Turku, Finland
| | - Eva-Mari Aro
- Laboratory of Molecular Plant Biology, Department of Biochemistry, University of Turku, 20014, Turku, Finland
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Agrawal C, Sen S, Yadav S, Rai S, Rai LC. A Novel Aldo-Keto Reductase (AKR17A1) of Anabaena sp. PCC 7120 Degrades the Rice Field Herbicide Butachlor and Confers Tolerance to Abiotic Stresses in E. coli. PLoS One 2015; 10:e0137744. [PMID: 26372161 PMCID: PMC4570671 DOI: 10.1371/journal.pone.0137744] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 08/21/2015] [Indexed: 12/12/2022] Open
Abstract
Present study deals with the identification of a novel aldo/keto reductase, AKR17A1 from Anabaena sp. PCC7120 and adds on as 17th family of AKR superfamily drawn from a wide variety of organisms. AKR17A1 shares many characteristics of a typical AKR such as— (i) conferring tolerance to multiple stresses like heat, UV-B, and cadmium, (ii) excellent activity towards known AKR substrates (isatin and 2-nitrobenzaldehyde), and (iii) obligate dependence on NADPH as a cofactor for enzyme activity. The most novel attribute of AKR17A1, first reported in this study, is its capability to metabolize butachlor, a persistent rice field herbicide that adversely affects agro-ecosystem and non-target organisms. The AKR17A1 catalyzed- degradation of butachlor resulted into formation of 1,2-benzene dicarboxylic acid and 2,6 bis (1,1, dimethylethyl) 4,-methyl phenol as the major products confirmed by GC-MS analysis.
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Affiliation(s)
- Chhavi Agrawal
- Molecular Biology Section, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi-221005, India
| | - Sonia Sen
- Molecular Biology Section, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi-221005, India
| | - Shivam Yadav
- Molecular Biology Section, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi-221005, India
| | - Shweta Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi-221005, India
| | - Lal Chand Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi-221005, India
- * E-mail:
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Comparative Proteomic Insights into the Lactate Responses of Halophilic Salinicoccus roseus W12. Sci Rep 2015; 5:13776. [PMID: 26358621 PMCID: PMC4566078 DOI: 10.1038/srep13776] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Accepted: 08/05/2015] [Indexed: 12/13/2022] Open
Abstract
Extremophiles use adaptive mechanisms to survive in extreme environments, which is of great importance for several biotechnological applications. A halophilic strain, Salinicoccus roseus W12, was isolated from salt lake in Inner Mongolia, China in this study. The ability of the strain to survive under high sodium conditions (including 20% sodium lactate or 25% sodium chloride, [w/v]) made it an ideal host to screen for key factors related to sodium lactate resistance. The proteomic responses to lactate were studied using W12 cells cultivated with or without lactate stress. A total of 1,656 protein spots in sodium lactate-treated culture and 1,843 spots in NaCl-treated culture were detected by 2-dimensional gel electrophoresis, and 32 of 120 significantly altered protein spots (fold change > 2, p < 0.05) were identified by matrix-assisted laser-desorption ionization time-of-flight mass spectrometry. Among 21 successfully identified spots, 19 proteins were upregulated and 2 were downregulated. The identified proteins are mainly involved in metabolism, cellular processes and signaling, and information storage and processing. Transcription studies confirmed that most of the encoding genes were upregulated after the cells were exposed to lactate in 10 min. Cross-protecting and energy metabolism-related proteins played an important role in lactate tolerance for S. roseus W12.
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Sen S, Agrawal C, Mishra Y, Rai S, Chatterjee A, Yadav S, Singh S, Rai LC. Exploring the membrane proteome of the diazotropic cyanobacterium Anabaena PCC7120 through gel-based proteomics and in silico approaches. J Proteomics 2015. [PMID: 26210591 DOI: 10.1016/j.jprot.2015.07.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
UNLABELLED This paper focuses on the gel-based membrane proteomics from diazotrophic cyanobacterium Anabaena PCC7120 by modifying the protocol of Hall et al. [1]. The bioinformatic analysis revealed that 59 (29 integral, 30 peripheral) of the 67 proteins identified were membrane proteins. Of the 29 integral proteins, except Alr0834, the remaining 28 contained 1-12 transmembrane helices. Sixteen integral proteins harboring signal peptides (Sec/TAT/LipoP) suggest that protein targeting in Anabaena involves both sec-dependent and sec-independent pathways. While majority of photosynthesis and respiration proteins (21 of 24) were confined to broad pH gradient the hypothetical and unknown (12 of 13), and cell envelope proteins (3 of 3) preferred the narrow pH range. Of the 5 transporters and binding proteins, Na(+)/H(+)-exchanging protein and Alr2372 were present in broad, pstS1 and cmpD in narrow and cmpA was common to both pH ranges. The distribution of proteins across pH gradient, thus clearly indicates the functional and structural diversity in membrane proteome of Anabaena. It requires mention that protochlorophyllide oxido-reductase, Na(+)/H(+)-exchanging protein, All1355, Alr2055, Alr3514, Alr2903 and Alr2751 were new entries to the 2DE membrane protein profile of Anabaena. This study demonstrates suitability of the modified protocol for the study of membrane protein from filamentous cyanobacteria. SIGNIFICANCE Anabaena sp. PCC7120 is used as a model organism due to its agriculture significance as biofertilizer, close resemblance with higher plant chloroplast and availability of full genome sequence. Although cytosolic proteome has been explored a lot membrane proteins are still understudied as they are notoriously difficult to display using 2-D technology. Identification and characterization of these proteins is therefore required to elucidate and understand cellular mechanisms. The purpose of this study was to develop a protocol suitable for membrane protein extraction from Anabaena. Additionally, by homology comparison or domain assignment a possible function could be ascribed to novel uncharacterized proteins which will serve as a useful reference for further detailed studies of membrane system in filamentous cyanobacteria. Resolution of membrane proteins ranging from least (single transmembrane helix) to highly hydrophobic (several transmembrane helices) one on 2D gels recommends the gel based approach for identification of membrane proteomics from filamentous cyanobacteria. This article is part of a Special Issue entitled: Proteomics in India.
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Affiliation(s)
- Sonia Sen
- Molecular Biology Section, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221005, India
| | - Chhavi Agrawal
- Molecular Biology Section, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221005, India
| | - Yogesh Mishra
- Department of Botany, Punjab University, Sector 14, Chandigarh 160014, India
| | - Shweta Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221005, India
| | - Antra Chatterjee
- Molecular Biology Section, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221005, India
| | - Shivam Yadav
- Molecular Biology Section, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221005, India
| | - Shilpi Singh
- Molecular Biology Section, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221005, India
| | - L C Rai
- Molecular Biology Section, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221005, India.
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