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Kappachery S, AlHosani M, Khan TA, AlKharoossi SN, AlMansoori N, AlShehhi SAS, AlMansoori H, AlKarbi M, Sasi S, Karumannil S, Elangovan SK, Shah I, Gururani MA. Modulation of antioxidant defense and PSII components by exogenously applied acetate mitigates salinity stress in Avena sativa. Sci Rep 2024; 14:620. [PMID: 38182773 PMCID: PMC10770181 DOI: 10.1038/s41598-024-51302-5] [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: 09/26/2023] [Accepted: 01/03/2024] [Indexed: 01/07/2024] Open
Abstract
Salinity stress has detrimental effects on various aspects of plant development. However, our understanding of strategies to mitigate these effects in crop plants remains limited. Recent research has shed light on the potential of sodium acetate as a mitigating component against salinity stress in several plant species. Here, we show the role of acetate sodium in counteracting the adverse effects on oat (Avena sativa) plants subjected to NaCl-induced salinity stress, including its impact on plant morphology, photosynthetic parameters, and gene expression related to photosynthesis and antioxidant capacity, ultimately leading to osmoprotection. The five-week experiment involved subjecting oat plants to four different conditions: water, salt (NaCl), sodium acetate, and a combination of salt and sodium acetate. The presence of NaCl significantly inhibited plant growth and root elongation, disrupted chlorophylls and carotenoids content, impaired chlorophyll fluorescence, and down-regulated genes associated with the plant antioxidant defense system. Furthermore, our findings reveal that when stressed plants were treated with sodium acetate, it partially reversed these adverse effects across all analyzed parameters. This reversal was particularly evident in the increased content of proline, thereby ensuring osmoprotection for oat plants, even under stressful conditions. These results provide compelling evidence regarding the positive impact of sodium acetate on various plant development parameters, with a particular focus on the enhancement of photosynthetic activity.
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Affiliation(s)
- Sajeesh Kappachery
- Department of Biology, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Mohamed AlHosani
- Department of Biology, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Tanveer Alam Khan
- Department of Biology, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Sara Nouh AlKharoossi
- Department of Chemistry, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Nemah AlMansoori
- Department of Biology, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Sara Ali Saeed AlShehhi
- Department of Biology, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Hamda AlMansoori
- Department of Chemistry, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Maha AlKarbi
- Department of Chemistry, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Shina Sasi
- Khalifa Center for Genetic Engineering and Biotechnology, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Sameera Karumannil
- Department of Biology, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Sampath Kumar Elangovan
- Department of Chemistry, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Iltaf Shah
- Department of Chemistry, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE
| | - Mayank Anand Gururani
- Department of Biology, College of Science, United Arab Emirates University, P.O.Box 15551, Al Ain, UAE.
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Oliveira GC, Broetto SG, Pereira OJ, Penha JDS, Lopes NGM, Silva DM. Effects of different levels of metal exposure and precipitation regimes on chlorophyll a fluorescence parameters in a coastal Brazilian restinga species. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2022. [DOI: 10.1016/j.jpap.2022.100153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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3
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Netshimbupfe MH, Berner J, Gouws C. The interactive effects of drought and heat stress on photosynthetic efficiency and biochemical defense mechanisms of Amaranthus species. PLANT-ENVIRONMENT INTERACTIONS (HOBOKEN, N.J.) 2022; 3:212-225. [PMID: 37283988 PMCID: PMC10168097 DOI: 10.1002/pei3.10092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 09/02/2022] [Accepted: 09/16/2022] [Indexed: 06/08/2023]
Abstract
Drought and heat stress are major abiotic stress factors that limit photosynthesis and other related metabolic processes that hamper plant growth and productivity. Identifying plants that can tolerate abiotic stress conditions is essential for sustainable agriculture. Amaranthus plants can tolerate adverse weather conditions, especially drought and heat, and their leaves and grain are highly nutritious. Because of these traits, amaranth has been identified as a possible crop to be grown in marginal crop production systems. Therefore, this study investigated the photochemical and biochemical responses of Amaranthus caudatus, Amaranthus hypochondriacus, Amaranthus cruentus, and Amaranthus spinosus to drought stress, heat shock treatments, and a combination of both. After the six-leaf stage in a greenhouse, plants were subjected to drought stress, heat shock treatments, and a combination of both. Chlorophyll a fluorescence was used to evaluate the photochemical responses of photosystem II to heat shock while subjected to drought stress. It was found that heat shock and a combination of drought and heat shock damages photosystem II, but the level of damage varies considerably between the species. We concluded that A. cruentus and A. spinosus are more heat and drought-tolerant than Amaranthus caudatus and Amaranthus hypochondriacus.
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Affiliation(s)
| | - Jacques Berner
- Unit for Environmental Science and ManagementNorth‐West University (Potchefstroom Campus)PotchefstroomSouth Africa
| | - Chrisna Gouws
- Centre of Excellence for Pharmaceutical Sciences (Pharmacen™)North‐West UniversityPotchefstroomSouth Africa
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Characterization of plant growth-promoting rhizobacteria (PGPR) in Persian walnut associated with drought stress tolerance. Sci Rep 2022; 12:12725. [PMID: 35882927 PMCID: PMC9325983 DOI: 10.1038/s41598-022-16852-6] [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: 03/26/2022] [Accepted: 07/18/2022] [Indexed: 11/08/2022] Open
Abstract
There is a lack of information on the rhizosphere of nut-bearing trees where microbial populations can benefit roots and tree growth. The current research aimed at discovering plant growth-promoting rhizobacteria (PGPR) in the rhizosphere of soil samples from around the root zone of six walnut trees, each of which was considered as a genotype, i.e. 'TT1', 'TT2', 'SS2', 'ZM1', 'Chandler' and 'Haward'. The trees grew in different arid and semiarid regions of Iran and Turkey. The strains were isolated and identified based on different morphological and biochemical markers. Drought-stress tolerance was assessed in the case of each isolate through their transfer to culture medium, containing polyethylene glycol (PEG6000) at 0 and 373.80 g L-1. Resilient strains were analyzed for measuring their ability to produce siderophore, hydrogen cyanide (HCN), Indole-3-acetic acid (IAA) and Gibberellic acid (GA3). In sum, 211 isolates were identified, of which a large number belonged to the Bacillus genus and, specifically, 78% of the strains were able to grow under drought stress conditions. The genus Arthrobacter was only detected in the rhizosphere of 'ZM1', 'Haward' and 'TT1' genotypes. In 4% of the strains, IAA production exceeded 53 mg L-1, while a high level of phosphorus solubility was verified in 6% of the strains. No strain was found to have the capability of producing HCN. The strains were screened for drought-tolerance, which resulted in the discovery of two promising strains, i.e. ZM39 and Cha43. Based on molecular identification through amplification and sequencing of the 16S rDNA gene, these two strains seemed to belong to Bacillus velezensis and Bacillus amyloliquefaciens, respectively. The discovery of new PGPR strains could probably assist walnut trees in improving their mechanisms of adaptation to drought stress.
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Ou T, Zhang M, Huang Y, Wang L, Wang F, Wang R, Liu X, Zhou Z, Xie J, Xiang Z. Role of Rhizospheric Bacillus megaterium HGS7 in Maintaining Mulberry Growth Under Extremely Abiotic Stress in Hydro-Fluctuation Belt of Three Gorges Reservoir. FRONTIERS IN PLANT SCIENCE 2022; 13:880125. [PMID: 35712602 PMCID: PMC9195505 DOI: 10.3389/fpls.2022.880125] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 03/17/2022] [Indexed: 05/03/2023]
Abstract
Plant growth-promoting rhizobacteria have been shown to play important roles in maintaining host fitness under periods of abiotic stress, and yet their effect on mulberry trees which regularly suffer drought after flooding in the hydro-fluctuation belt of the Three Gorges Reservoir Region in China remains largely uncharacterized. In the present study, 74 bacterial isolates were obtained from the rhizosphere soil of mulberry after drought stress, including 12 phosphate-solubilizing and 10 indole-3-acetic-acid-producing isolates. Bacillus megaterium HGS7 was selected for further study due to the abundance of traits that might benefit plants. Genomic analysis revealed that strain HGS7 possessed multiple genes that contributed to plant growth promotion, stress tolerance enhancement, and antimicrobial compound production. B. megaterium HGS7 consistently exhibited antagonistic activity against phytopathogens and strong tolerance to abiotic stress in vitro. Moreover, this strain stimulated mulberry seed germination and seedling growth. It may also induce the production of proline and antioxidant enzymes in mulberry trees to enhance drought tolerance and accelerate growth recovery after drought stress. The knowledge of the interactions between rhizobacteria HGS7 and its host plant might provide a potential strategy to enhance the drought tolerance of mulberry trees in a hydro-fluctuation belt.
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Affiliation(s)
- Ting Ou
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding in Ministry of Agriculture, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, China
| | - Meng Zhang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding in Ministry of Agriculture, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, China
| | - Yazhou Huang
- Kaizhou District Nature Reserve Management Center, Chongqing, China
| | - Li Wang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding in Ministry of Agriculture, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, China
| | - Fei Wang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding in Ministry of Agriculture, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, China
| | - Ruolin Wang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding in Ministry of Agriculture, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, China
| | - Xiaojiao Liu
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding in Ministry of Agriculture, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, China
| | - Zeyang Zhou
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding in Ministry of Agriculture, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, China
- College of Life Sciences, Chongqing Normal University, Chongqing, China
| | - Jie Xie
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding in Ministry of Agriculture, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, China
- *Correspondence: Jie Xie,
| | - Zhonghuai Xiang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding in Ministry of Agriculture, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing, China
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Yuan L, Zheng Y, Nie L, Zhang L, Wu Y, Zhu S, Hou J, Shan GL, Liu TK, Chen G, Tang X, Wang C. Transcriptional profiling reveals changes in gene regulation and signaling transduction pathways during temperature stress in wucai (Brassica campestris L.). BMC Genomics 2021; 22:687. [PMID: 34551703 PMCID: PMC8456696 DOI: 10.1186/s12864-021-07981-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 09/01/2021] [Indexed: 02/07/2023] Open
Abstract
Background Wucai (Brassica campestris L. ssp. chinensis var. rosularis Tsen) is a cold-tolerant plant that is vulnerable to high temperature. This study explored the response mechanism of wucai to low temperature. In this study, wucai seedlings were treated with different temperatures, including low temperature (LT), high temperature (HT), and a control. Results According to transcriptomics analysis, the number of differentially expressed genes (DEGs) in HT and LT was 10,702 and 7267, respectively, compared with the control. The key genes associated with the physiological response of wucai to the treatments were analyzed. The Kyoto Encyclopedia of Genes and Genomes and Gene Ontology annotations indicated the importance of the photosynthesis and photosynthetic-antenna protein pathways. We found that a high-temperature environment greatly inhibited the expression of important genes in the photosynthetic pathway (BrLhc superfamily members, PsaD, PsaE, PsaD, PsaD, PsbO, PsbP, PsbQ, PsbR, PsbS, PsbW, PsbY, Psb27, and Psb28), whereas low temperature resulted in the expression of certain key genes (BrLhc superfamily members, Psa F, Psa H, Psb S, Psb H, Psb 28). In addition, the wucai seedlings exhibited better photosynthetic performance under low-temperature conditions than high-temperature conditions. Conclusions Based on the above results, we speculate that upon exposure to low temperature, the plants developed higher cold tolerance by upregulating the expression of genes related to photosynthesis. Conversely, high-temperature stress inhibited the expression of pivotal genes and weakened the self-regulating ability of the plants. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07981-9.
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Affiliation(s)
- Lingyun Yuan
- College of Horticulture, Vegetable Genetics and Breeding Laboratory, Anhui Agricultural University, 130 West Changjiang Road, Hefei, 230036, Anhui, China.,Provincial Engineering Laboratory for Horticultural Crop Breeding of Anhui, 130 West of Changjiang Road, Hefei, 230036, Anhui, China.,Wanjiang Vegetable Industrial Technology Institute, Maanshan, 238200, Anhui, China
| | - Yushan Zheng
- College of Horticulture, Vegetable Genetics and Breeding Laboratory, Anhui Agricultural University, 130 West Changjiang Road, Hefei, 230036, Anhui, China.,Provincial Engineering Laboratory for Horticultural Crop Breeding of Anhui, 130 West of Changjiang Road, Hefei, 230036, Anhui, China
| | - Libing Nie
- College of Horticulture, Vegetable Genetics and Breeding Laboratory, Anhui Agricultural University, 130 West Changjiang Road, Hefei, 230036, Anhui, China.,Provincial Engineering Laboratory for Horticultural Crop Breeding of Anhui, 130 West of Changjiang Road, Hefei, 230036, Anhui, China
| | - Liting Zhang
- College of Horticulture, Vegetable Genetics and Breeding Laboratory, Anhui Agricultural University, 130 West Changjiang Road, Hefei, 230036, Anhui, China.,Provincial Engineering Laboratory for Horticultural Crop Breeding of Anhui, 130 West of Changjiang Road, Hefei, 230036, Anhui, China
| | - Ying Wu
- College of Horticulture, Vegetable Genetics and Breeding Laboratory, Anhui Agricultural University, 130 West Changjiang Road, Hefei, 230036, Anhui, China.,Provincial Engineering Laboratory for Horticultural Crop Breeding of Anhui, 130 West of Changjiang Road, Hefei, 230036, Anhui, China
| | - Shidong Zhu
- College of Horticulture, Vegetable Genetics and Breeding Laboratory, Anhui Agricultural University, 130 West Changjiang Road, Hefei, 230036, Anhui, China.,Provincial Engineering Laboratory for Horticultural Crop Breeding of Anhui, 130 West of Changjiang Road, Hefei, 230036, Anhui, China.,Wanjiang Vegetable Industrial Technology Institute, Maanshan, 238200, Anhui, China
| | - Jinfeng Hou
- College of Horticulture, Vegetable Genetics and Breeding Laboratory, Anhui Agricultural University, 130 West Changjiang Road, Hefei, 230036, Anhui, China.,Provincial Engineering Laboratory for Horticultural Crop Breeding of Anhui, 130 West of Changjiang Road, Hefei, 230036, Anhui, China.,Wanjiang Vegetable Industrial Technology Institute, Maanshan, 238200, Anhui, China
| | - Guo Lei Shan
- College of Horticulture, Vegetable Genetics and Breeding Laboratory, Anhui Agricultural University, 130 West Changjiang Road, Hefei, 230036, Anhui, China.,Provincial Engineering Laboratory for Horticultural Crop Breeding of Anhui, 130 West of Changjiang Road, Hefei, 230036, Anhui, China
| | - Tong Kun Liu
- College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Guohu Chen
- College of Horticulture, Vegetable Genetics and Breeding Laboratory, Anhui Agricultural University, 130 West Changjiang Road, Hefei, 230036, Anhui, China.,Provincial Engineering Laboratory for Horticultural Crop Breeding of Anhui, 130 West of Changjiang Road, Hefei, 230036, Anhui, China
| | - Xiaoyan Tang
- College of Horticulture, Vegetable Genetics and Breeding Laboratory, Anhui Agricultural University, 130 West Changjiang Road, Hefei, 230036, Anhui, China.,Provincial Engineering Laboratory for Horticultural Crop Breeding of Anhui, 130 West of Changjiang Road, Hefei, 230036, Anhui, China
| | - Chenggang Wang
- College of Horticulture, Vegetable Genetics and Breeding Laboratory, Anhui Agricultural University, 130 West Changjiang Road, Hefei, 230036, Anhui, China. .,Provincial Engineering Laboratory for Horticultural Crop Breeding of Anhui, 130 West of Changjiang Road, Hefei, 230036, Anhui, China. .,Wanjiang Vegetable Industrial Technology Institute, Maanshan, 238200, Anhui, China.
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Fatima T, Arora NK. Pseudomonas entomophila PE3 and its exopolysaccharides as biostimulants for enhancing growth, yield and tolerance responses of sunflower under saline conditions. Microbiol Res 2020; 244:126671. [PMID: 33360750 DOI: 10.1016/j.micres.2020.126671] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 11/29/2020] [Accepted: 12/11/2020] [Indexed: 01/09/2023]
Abstract
Evaluation of plant growth promoting bacteria and the associated metabolites under saline conditions can be a potential eco-friendly remediation and productivity enhancement strategy. Salt-tolerant Pseudomonas entomophila PE3 was isolated from saline soil and screened for plant growth promoting (PGP) traits. The isolate produced indole acetic acid (IAA), gibberellic acid (GA), exopolysaccharides (EPS) and siderophore along with the potential to solubilize potassium (K), zinc (Zn) and phosphorus (P). Maximum stimulation of PGP attributes was recorded at 2% NaCl concentration. To determine the role of EPS, their composition was analyzed (at different salt concentrations) and comparison was done to determine the changes upon exposure to salinity. EPS was found to be rich in carbohydrates, proteins and phenolic compounds. The extracted EPS were also found to possess salt-tolerance properties including antioxidant, hydroxyl scavenging activity, reducing power, emulsification and flocculation potential, and Na+ accumulation ability. Interestingly, the salt tolerance properties of EPS were enhanced upon exposure to salinity (2% NaCl). Finally, EPS based bioformulation of isolate PE3 was checked through field assay in saline soil. With promising results on growth promotion and improved salinity tolerance attributes of inoculated sunflower plants, the bioformulation of PE3 amended with EPS can be a breakthrough for remediation of saline-agroecosystems.
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Affiliation(s)
- Tahmish Fatima
- Department of Environmental Microbiology, Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow, UP, India
| | - Naveen Kumar Arora
- Department of Environmental Science, School of Earth and Environmental Sciences, Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow, UP, India.
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8
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Gupta R. The oxygen-evolving complex: a super catalyst for life on earth, in response to abiotic stresses. PLANT SIGNALING & BEHAVIOR 2020; 15:1824721. [PMID: 32970515 PMCID: PMC7671056 DOI: 10.1080/15592324.2020.1824721] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The oxygen-evolving complex is integrated into photosystem (PSII). An essential part of oxygenic photosynthetic apparatus, embedded in the thylakoid membrane of chloroplasts. The OEC is a super catalyst to split water into molecular oxygen in the presence of light. The OEC consist of four Mn atoms, one Ca atom and five oxygen atoms (CaMn4O5) and this cluster is maintained by its surrounding proteins viz., PsbQ, PsbP, PsbO, PsbR. The function of this super catalyst with a high turnover frequency of 500 s-1 in standard condition. Chlorophyll a fluorescence (OJIP transients) are used to understand structural and functional cohesion of photosynthetic apparatus. A further K-peak in OJIP curve reflects damage at the OEC donor site in response to salinity, drought, and high temperature. The decline in performance indices (PI, SFI) also revealed structural damage of photosynthetic apparatus that leads to disruption of electron transport rate under abiotic conditions. This review discusses the structural and function cohesion of the OEC in plant against variable abiotic conditions.
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Affiliation(s)
- Ramwant Gupta
- Department of Biology, School of Pure Sciences, College of Engineering Science and Technology, Fiji National University, Natabua, Fiji Islands
- CONTACT Ramwant Gupta
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Vilas JM, Corigliano MG, Clemente M, Maiale SJ, Rodríguez AA. Close relationship between the state of the oxygen evolving complex and rice cold stress tolerance. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 296:110488. [PMID: 32540008 DOI: 10.1016/j.plantsci.2020.110488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 03/20/2020] [Accepted: 03/25/2020] [Indexed: 05/21/2023]
Abstract
The results of the present work suggested a relationship between the growth stability and functional/structural parameters associated to the primary photochemistry and oxygen evolving complex (OEC) in tolerant rice plants under suboptimal low temperatures (SLT) stress. This was concluded from the absence of changes in net photosynthetic rate and in fraction of reaction centers to reduce quinone A, and very small changes in P680 efficiency to trap and donate electrons to quinone A and in fraction of active OEC in tolerant plants under cold stress but not in sensitive plants. The SLT stress also induced OEC activity limitations in both genotypes, but in a greater extent in sensitive plants. However, an assay using an artificial electron donor to replace OEC indicated that the P680+ capacity to accept electrons was not altered in both genotypes under SLT stress from the beginning of the stress treatment, suggesting that the OEC structure stability is related to rice SLT tolerance to sustain the photosynthesis. This hypothesis was also supported by the fact that tolerant plants but not sensitive plants did not alter the gene expression and protein content of PsbP under SLT stress, an OEC subunit with a role in stabilizing of OEC structure.
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Affiliation(s)
- Juan Manuel Vilas
- Laboratorio de Fisiología de Estrés Abiótico en Plantas, Unidad de Biotecnología 1, INTECH-CONICET-UNSAM, Chascomús, Argentina.
| | | | - Marina Clemente
- Laboratorio de Biotecnología Vegetal, INTECH-CONICET-UNSAM, Chascomús, Argentina.
| | - Santiago Javier Maiale
- Laboratorio de Fisiología de Estrés Abiótico en Plantas, Unidad de Biotecnología 1, INTECH-CONICET-UNSAM, Chascomús, Argentina.
| | - Andrés Alberto Rodríguez
- Laboratorio de Fisiología de Estrés Abiótico en Plantas, Unidad de Biotecnología 1, INTECH-CONICET-UNSAM, Chascomús, Argentina.
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Ševčíková H, Mašková P, Lipavská H. Root cultures of potato mutant lacking MSPI isoform, indispensable for photosynthetic light reactions, exhibit characteristics similar to intact plant roots. JOURNAL OF PLANT PHYSIOLOGY 2020; 245:153091. [PMID: 31887556 DOI: 10.1016/j.jplph.2019.153091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 09/20/2019] [Accepted: 11/02/2019] [Indexed: 06/10/2023]
Abstract
Potato (Solanum tuberosum) mutant (ST) lacking one isoform of manganese-stabilizing protein (MSPI) of photosystem II exhibited besides spontaneous tuberization also growth changes with strongly impaired root system development. Previous studies revealed marked changes in carbohydrate levels and allocation within ST plant body. To verify causal relationship between changed carbohydrate balance and root growth restriction we engaged dark grown sucrose-supplied root organ-cultures of ST plants to exclude/confirm shoot effects. Unexpectedly, in ST root cultures we observed large alterations in growth and architecture as well as saccharide status similar to those found in the intact plant roots. The gene expression analysis, however, proved PsbO1 transcript (coding MSPI protein) neither in ST nor in WT root-organ cultures. Therefore, the results point to indirect effects of PsbO1 allele absence connected possibly with some epigenetic modulations.
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Affiliation(s)
- Hana Ševčíková
- Department of Experimental Plant Biology, Faculty of Science, Charles University, Viničná 5, 12843, Prague, Czech Republic
| | - Petra Mašková
- Department of Experimental Plant Biology, Faculty of Science, Charles University, Viničná 5, 12843, Prague, Czech Republic.
| | - Helena Lipavská
- Department of Experimental Plant Biology, Faculty of Science, Charles University, Viničná 5, 12843, Prague, Czech Republic
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Varghese N, Alyammahi O, Nasreddine S, Alhassani A, Gururani MA. Melatonin Positively Influences the Photosynthetic Machinery and Antioxidant System of Avena sativa during Salinity Stress. PLANTS 2019; 8:plants8120610. [PMID: 31888189 PMCID: PMC6963410 DOI: 10.3390/plants8120610] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 12/03/2019] [Accepted: 12/13/2019] [Indexed: 12/15/2022]
Abstract
Recent studies have demonstrated melatonin protects various crops against abiotic stresses. However, the effects of melatonin on the photosynthetic apparatus of stressed plants is poorly characterized. We investigated the effects of melatonin pretreatment on photosynthesis and tolerance to salinity stress in Avena sativa (oat) plants. Oat plants were exposed to four treatments (three replicate pots per treatment): well-watered (WW; control); watered with 300 mM salt solution for 10 days (NaCl); pretreated with 100 µM melatonin solution for 7 days then watered normally for 10 days (Mel+W); or pretreated with 100 µM melatonin for 7 days then 300 mM salt for 10 days (Mel+NaCl). Considerable differences in growth parameters, chlorophyll content, stomatal conductance, proline accumulation, lipid peroxidation, electrolyte leakage, and growth parameters were observed between groups. Genes encoding three major antioxidant enzymes were upregulated in the Mel+NaCl group compared to the other groups. Chlorophyll-a fluorescence kinetic analyses revealed that almost all photosynthetic parameters were improved in Mel+NaCl plants compared to the other treatments. Analysis of genes encoding the major extrinsic proteins of photosystem II (PSII) revealed that PsbA, PsbB, PsbC, and PsbD (but not PsbO) were highly upregulated in Mel+NaCl plants compared to the other groups, indicating melatonin positively influenced photosynthesis under control conditions and salt stress. In addition, melatonin upregulated stress-responsive NAC transcription factor genes in plants exposed to salt stress. These findings suggest melatonin pretreatment improves photosynthesis and enhances salt tolerance in oat plants.
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12
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Temperature effects on photosynthetic performance of Antarctic lichen Dermatocarpon polyphyllizum: a chlorophyll fluorescence study. Polar Biol 2019. [DOI: 10.1007/s00300-019-02464-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Photosystem II Extrinsic Proteins and Their Putative Role in Abiotic Stress Tolerance in Higher Plants. PLANTS 2018; 7:plants7040100. [PMID: 30441780 PMCID: PMC6313935 DOI: 10.3390/plants7040100] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 11/09/2018] [Accepted: 11/12/2018] [Indexed: 01/08/2023]
Abstract
Abiotic stress remains one of the major challenges in managing and preventing crop loss. Photosystem II (PSII), being the most susceptible component of the photosynthetic machinery, has been studied in great detail over many years. However, much of the emphasis has been placed on intrinsic proteins, particularly with respect to their involvement in the repair of PSII-associated damage. PSII extrinsic proteins include PsbO, PsbP, PsbQ, and PsbR in higher plants, and these are required for oxygen evolution under physiological conditions. Changes in extrinsic protein expression have been reported to either drastically change PSII efficiency or change the PSII repair system. This review discusses the functional role of these proteins in plants and indicates potential areas of further study concerning these proteins.
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Ševčíková H, Mašková P, Tarkowská D, Mašek T, Lipavská H. Carbohydrates and gibberellins relationship in potato tuberization. JOURNAL OF PLANT PHYSIOLOGY 2017; 214:53-63. [PMID: 28441523 DOI: 10.1016/j.jplph.2017.04.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 04/04/2017] [Accepted: 04/05/2017] [Indexed: 06/07/2023]
Abstract
Potato represents the third most important crop worldwide and therefore to understand regulations of tuber onset is crucial from both theoretical and practical points of view. Photosynthesis and related carbohydrate status along with phytohormone balance belong to the essential factors in regulation of plant development including storage organ formation. In our work we used potato (Solanum tuberosum) cv. Lada and its spontaneously tuberizing mutant (ST plants) grown in vitro under low carbohydrate availability (non-inductive conditions). Small plant phenotype and readiness to tuberization of ST plants was, however, not accompanied by lower gibberellins levels, as determined by UHPLC-MS/MS. Therefore, we focused on the other inducing factor, carbohydrate status. Using HPLC, we followed changes in carbohydrate distribution under mixotrophic (2.5% sucrose in medium) and photoautotrophic conditions (no sucrose addition and higher gas and light availability) and observed changes in soluble carbohydrate allocation and starch deposition, favouring basal stem part in mutants. In addition, the determination of tuber-inducing marker gene expressions revealed increased levels of StSP6A in ST leaves. Collectively these data point towards the possibility of two parallel cross-talking pathways (carbohydrate - and gibberellin- dependent ones) with the power of both to outcompete the other one when its signal is for some reason extraordinary strong.
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Affiliation(s)
- Hana Ševčíková
- Department of Experimental Plant Biology, Faculty of Science, Charles University, Viničná 5, CZ-12844 Prague, Czech Republic.
| | - Petra Mašková
- Department of Experimental Plant Biology, Faculty of Science, Charles University, Viničná 5, CZ-12844 Prague, Czech Republic
| | - Danuše Tarkowská
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany Academy of Sciences of the Czech Republic and Palacký University, Šlechtitelů 27, CZ-78371 Olomouc, Czech Republic
| | - Tomáš Mašek
- Department of Genetics and Microbiology, Faculty of Science, Charles University, Viničná 5, CZ-12844 Prague, Czech Republic
| | - Helena Lipavská
- Department of Experimental Plant Biology, Faculty of Science, Charles University, Viničná 5, CZ-12844 Prague, Czech Republic
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Singh RP, Jha PN. Analysis of fatty acid composition of PGPR Klebsiella sp. SBP-8 and its role in ameliorating salt stress in wheat. Symbiosis 2017. [DOI: 10.1007/s13199-017-0477-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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Shimazaki T, Endo T, Kasuga M, Yamaguchi-Shinozaki K, Watanabe KN, Kikuchi A. Evaluation of the yield of abiotic-stress-tolerant AtDREB1A transgenic potato under saline conditions in advance of field trials. BREEDING SCIENCE 2016; 66:703-710. [PMID: 28163586 PMCID: PMC5282753 DOI: 10.1270/jsbbs.16054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 08/10/2016] [Indexed: 05/03/2023]
Abstract
Cultivated potato is a drought-, salinity-, and frost-sensitive species. The transgenic approach is one of the methods used to mitigate abiotic stress. The utility of transgenic potatoes that have abiotic stress tolerance should be judged from their yield under stress conditions. In order to establish transgenic potato lines with the AtDREB1A gene that could be used in practical applications, we screened candidate lines in a growth room with growth profiles under non-stress conditions rather than the expression level of transgene. After identifying better transgenic lines (D163 and D164), yield of those lines under stress conditions was evaluated in the special netted-house. Although the yield was lower than the yield under non-stress conditions, two selected transgenic lines were able to maintain their yield under high saline conditions (EC > 10 mS/cm). In this study, fertilizer was not added beyond what was already contained in the soil mix in order to evaluate the yield of the transgenic lines under saline conditions in as simple a manner as possible. In future studies, it will be necessary to evaluate their yield in a farming context in an isolated field after assessing the environmental biosafety of these transgenic potato lines.
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Affiliation(s)
- Takayoshi Shimazaki
- Faculty of Life and Environmental Sciences, Gene Research Center, University of Tsukuba,
1-1-1 Ten-noudai, Tsukuba, Ibaraki 305-8752,
Japan
| | - Tsukasa Endo
- Faculty of Life and Environmental Sciences, Gene Research Center, University of Tsukuba,
1-1-1 Ten-noudai, Tsukuba, Ibaraki 305-8752,
Japan
| | - Mie Kasuga
- Biological Resources Division, Japan International Research Center for Agricultural Sciences (JIRCAS),
Tsukuba, Ibaraki 305-8686,
Japan
| | - Kazuko Yamaguchi-Shinozaki
- Graduate School of Agricultural and Life Sciences, The University of Tokyo,
Bunkyo-ku, Tokyo 113-8657,
Japan
| | - Kazuo N. Watanabe
- Faculty of Life and Environmental Sciences, Gene Research Center, University of Tsukuba,
1-1-1 Ten-noudai, Tsukuba, Ibaraki 305-8752,
Japan
| | - Akira Kikuchi
- Faculty of Life and Environmental Sciences, Gene Research Center, University of Tsukuba,
1-1-1 Ten-noudai, Tsukuba, Ibaraki 305-8752,
Japan
- Corresponding author (e-mail: )
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17
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Gururani MA, Venkatesh J, Tran LSP. Regulation of Photosynthesis during Abiotic Stress-Induced Photoinhibition. MOLECULAR PLANT 2015; 8:1304-20. [PMID: 25997389 DOI: 10.1016/j.molp.2015.05.005] [Citation(s) in RCA: 354] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 05/12/2015] [Accepted: 05/12/2015] [Indexed: 05/18/2023]
Abstract
Plants as sessile organisms are continuously exposed to abiotic stress conditions that impose numerous detrimental effects and cause tremendous loss of yield. Abiotic stresses, including high sunlight, confer serious damage on the photosynthetic machinery of plants. Photosystem II (PSII) is one of the most susceptible components of the photosynthetic machinery that bears the brunt of abiotic stress. In addition to the generation of reactive oxygen species (ROS) by abiotic stress, ROS can also result from the absorption of excessive sunlight by the light-harvesting complex. ROS can damage the photosynthetic apparatus, particularly PSII, resulting in photoinhibition due to an imbalance in the photosynthetic redox signaling pathways and the inhibition of PSII repair. Designing plants with improved abiotic stress tolerance will require a comprehensive understanding of ROS signaling and the regulatory functions of various components, including protein kinases, transcription factors, and phytohormones, in the responses of photosynthetic machinery to abiotic stress. Bioenergetics approaches, such as chlorophyll a transient kinetics analysis, have facilitated our understanding of plant vitality and the assessment of PSII efficiency under adverse environmental conditions. This review discusses the current understanding and indicates potential areas of further studies on the regulation of the photosynthetic machinery under abiotic stress.
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Affiliation(s)
| | - Jelli Venkatesh
- Department of Bioresource and Food Science, Konkuk University, Seoul 143-701, Korea
| | - Lam Son Phan Tran
- Signaling Pathway Research Unit, RIKEN Center for Sustainable Resource Science, 1-7-22, Suehiro-cho, Tsurumi, Yokohama, Kanagawa 230-0045, Japan.
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18
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Gururani MA, Mohanta TK, Bae H. Current Understanding of the Interplay between Phytohormones and Photosynthesis under Environmental Stress. Int J Mol Sci 2015; 16:19055-85. [PMID: 26287167 PMCID: PMC4581286 DOI: 10.3390/ijms160819055] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 07/30/2015] [Accepted: 08/11/2015] [Indexed: 12/18/2022] Open
Abstract
Abiotic stress accounts for huge crop losses every year across the globe. In plants, the photosynthetic machinery gets severely damaged at various levels due to adverse environmental conditions. Moreover, the reactive oxygen species (ROS) generated as a result of stress further promote the photosynthetic damage by inhibiting the repair system of photosystem II. Earlier studies have suggested that phytohormones are not only required for plant growth and development, but they also play a pivotal role in regulating plants’ responses to different abiotic stress conditions. Although, phytohormones have been studied in great detail in the past, their influence on the photosynthetic machinery under abiotic stress has not been studied. One of the major factors that limits researchers fromelucidating the precise roles of phytohormones is the highly complex nature of hormonal crosstalk in plants. Another factor that needs to be elucidated is the method used for assessing photosynthetic damage in plants that are subjected to abiotic stress. Here, we review the current understanding on the role of phytohormones in the photosynthetic machinery under various abiotic stress conditions and discuss the potential areas for further research.
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Affiliation(s)
| | - Tapan Kumar Mohanta
- School of Biotechnology, Yeungnam University, Gyeongsan, Gyeongbook 712-749, Korea.
| | - Hanhong Bae
- School of Biotechnology, Yeungnam University, Gyeongsan, Gyeongbook 712-749, Korea.
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Gururani MA, Venkatesh J, Ganesan M, Strasser RJ, Han Y, Kim JI, Lee HY, Song PS. In Vivo Assessment of Cold Tolerance through Chlorophyll-a Fluorescence in Transgenic Zoysiagrass Expressing Mutant Phytochrome A. PLoS One 2015; 10:e0127200. [PMID: 26010864 PMCID: PMC4444231 DOI: 10.1371/journal.pone.0127200] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 04/13/2015] [Indexed: 01/06/2023] Open
Abstract
Chlorophyll-a fluorescence analysis provides relevant information about the physiology of plants growing under abiotic stress. In this study, we evaluated the influence of cold stress on the photosynthetic machinery of transgenic turfgrass, Zoysia japonica, expressing oat phytochrome A (PhyA) or a hyperactive mutant phytochrome A (S599A) with post-translational phosphorylation blocked. Biochemical analysis of zoysiagrass subjected to cold stress revealed reduced levels of hydrogen peroxide, increased proline accumulation, and enhanced specific activities of antioxidant enzymes compared to those of control plants. Detailed analyses of the chlorophyll-a fluorescence data through the so-called OJIP test exhibited a marked difference in the physiological status among transgenic and control plants. Overall, these findings suggest an enhanced level of cold tolerance in S599A zoysiagrass cultivars as reflected in the biochemical and physiological analyses. Further, we propose that chlorophyll-a fluorescence analysis using OJIP test is an efficient tool in determining the physiological status of plants under cold stress conditions.
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Affiliation(s)
- Mayank Anand Gururani
- Subtropical Horticulture Research Institute, Faculty of Biotechnology, Jeju National University, Jeju 690–756, South Korea
- School of Biotechnology, Yeungnam University, Gyeongsan, Gyeongbook 712–749, South Korea
| | - Jelli Venkatesh
- Department of Molecular Biotechnology, Konkuk University, Seoul 143–701, South Korea
| | - Markkandan Ganesan
- Subtropical Horticulture Research Institute, Faculty of Biotechnology, Jeju National University, Jeju 690–756, South Korea
- Department of Biological Sciences, Presidency University, Kolkata 700073, West Bengal, India
| | - Reto Jörg Strasser
- Bioenergetics Laboratory, University of Geneva, Jussy, CH-1254, Geneva, Switzerland
| | - Yunjeong Han
- Department of Biotechnology and Kumho Life Science Laboratory, Chonnam National University, Gwangju 500–757, South Korea
| | - Jeong-Il Kim
- Department of Biotechnology and Kumho Life Science Laboratory, Chonnam National University, Gwangju 500–757, South Korea
| | - Hyo-Yeon Lee
- Subtropical Horticulture Research Institute, Faculty of Biotechnology, Jeju National University, Jeju 690–756, South Korea
| | - Pill-Soon Song
- Subtropical Horticulture Research Institute, Faculty of Biotechnology, Jeju National University, Jeju 690–756, South Korea
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20
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Núñez-López L, Aguirre-Cruz A, Barrera-Figueroa BE, Peña-Castro JM. Improvement of enzymatic saccharification yield in Arabidopsis thaliana by ectopic expression of the rice SUB1A-1 transcription factor. PeerJ 2015; 3:e817. [PMID: 25780769 PMCID: PMC4358655 DOI: 10.7717/peerj.817] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2014] [Accepted: 02/14/2015] [Indexed: 12/25/2022] Open
Abstract
Saccharification of polysaccharides releases monosaccharides that can be used by ethanol-producing microorganisms in biofuel production. To improve plant biomass as a raw material for saccharification, factors controlling the accumulation and structure of carbohydrates must be identified. Rice SUB1A-1 is a transcription factor that represses the turnover of starch and postpones energy-consuming growth processes under submergence stress. Arabidopsis was employed to test if heterologous expression of SUB1A-1 or SUB1C-1 (a related gene) can be used to improve saccharification. Cellulolytic and amylolytic enzymatic treatments confirmed that SUB1A-1 transgenics had better saccharification yield than wild-type (Col-0), mainly from accumulated starch. This improved saccharification yield was developmentally controlled; when compared to Col-0, young transgenic vegetative plants yielded 200-300% more glucose, adult vegetative plants yielded 40-90% more glucose and plants in reproductive stage had no difference in yield. We measured photosynthetic parameters, starch granule microstructure, and transcript abundance of genes involved in starch degradation (SEX4, GWD1), juvenile transition (SPL3-5) and meristematic identity (FUL, SOC1) but found no differences to Col-0, indicating that starch accumulation may be controlled by down-regulation of CONSTANS and FLOWERING LOCUS T by SUB1A-1 as previously reported. SUB1A-1 transgenics also offered less resistance to deformation than wild-type concomitant to up-regulation of AtEXP2 expansin and BGL2 glucan-1,3,-beta-glucosidase. We conclude that heterologous SUB1A-1 expression can improve saccharification yield and softness, two traits needed in bioethanol production.
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Affiliation(s)
- Lizeth Núñez-López
- Laboratorio de Biotecnología Vegetal, Instituto de Biotecnología, Universidad del Papaloapan , Tuxtepec, Oaxaca , México ; División de Estudios de Posgrado, Universidad del Papaloapan , Tuxtepec, Oaxaca , México
| | - Andrés Aguirre-Cruz
- Taller de Alimentos, Instituto de Biotecnología, Universidad del Papaloapan , Tuxtepec, Oaxaca , México
| | - Blanca Estela Barrera-Figueroa
- Laboratorio de Biotecnología Vegetal, Instituto de Biotecnología, Universidad del Papaloapan , Tuxtepec, Oaxaca , México
| | - Julián Mario Peña-Castro
- Laboratorio de Biotecnología Vegetal, Instituto de Biotecnología, Universidad del Papaloapan , Tuxtepec, Oaxaca , México
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21
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Kikuchi A, Huynh HD, Endo T, Watanabe K. Review of recent transgenic studies on abiotic stress tolerance and future molecular breeding in potato. BREEDING SCIENCE 2015; 65:85-102. [PMID: 25931983 PMCID: PMC4374567 DOI: 10.1270/jsbbs.65.85] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 12/23/2014] [Indexed: 05/20/2023]
Abstract
Global warming has become a major issue within the last decade. Traditional breeding programs for potato have focused on increasing productivity and quality and disease resistance, thus, modern cultivars have limited tolerance of abiotic stresses. The introgression of abiotic stress tolerance into modern cultivars is essential work for the future. Recently, many studies have investigated abiotic stress using transgenic techniques. This manuscript focuses on the study of abiotic stress, in particular drought, salinity and low temperature, during this century. Dividing studies into these three stress categories for this review was difficult. Thus, based on the study title and the transgene property, transgenic studies were classified into five categories in this review; oxidative scavengers, transcriptional factors, and above three abiotic categories. The review focuses on studies that investigate confer of stress tolerance and the identification of responsible factors, including wild relatives. From a practical application perspective, further evaluation of transgenic potato with abiotic stress tolerance is required. Although potato plants, including wild species, have a large potential for abiotic stress tolerance, exploration of the factors responsible for conferring this tolerance is still developing. Molecular breeding, including genetic engineering and conventional breeding using DNA markers, is expected to develop in the future.
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Venkatesh J, Park SW. Role of L-ascorbate in alleviating abiotic stresses in crop plants. BOTANICAL STUDIES 2014; 55:38. [PMID: 28510969 PMCID: PMC5432849 DOI: 10.1186/1999-3110-55-38] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Accepted: 12/16/2013] [Indexed: 05/21/2023]
Abstract
L-ascorbic acid (vitamin C) is a major antioxidant in plants and plays a significant role in mitigation of excessive cellular reactive oxygen species activities caused by number of abiotic stresses. Plant ascorbate levels change differentially in response to varying environmental stress conditions, depending on the degree of stress and species sensitivity. Successful modulation of ascorbate biosynthesis through genetic manipulation of genes involved in biosynthesis, catabolism and recycling of ascorbate has been achieved. Recently, role of ascorbate in alleviating number of abiotic stresses has been highlighted in crop plants. In this article, we discuss the current understanding of ascorbate biosynthesis and its antioxidant role in order to increase our comprehension of how ascorbate helps plants to counteract or cope with various abiotic stresses.
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Affiliation(s)
- Jelli Venkatesh
- Department of Molecular Biotechnology, Konkuk University, 1, Hwayang-dong, Seoul, Gwangjin-gu South Korea
| | - Se Won Park
- Department of Molecular Biotechnology, Konkuk University, 1, Hwayang-dong, Seoul, Gwangjin-gu South Korea
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Żurek G, Rybka K, Pogrzeba M, Krzyżak J, Prokopiuk K. Chlorophyll a fluorescence in evaluation of the effect of heavy metal soil contamination on perennial grasses. PLoS One 2014; 9:e91475. [PMID: 24633293 PMCID: PMC3954697 DOI: 10.1371/journal.pone.0091475] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Accepted: 02/12/2014] [Indexed: 11/19/2022] Open
Abstract
Chlorophyll a fluorescence gives information about the plant physiological status due to its coupling to the photosynthetic electron transfer chain and to the further biochemical processes. Environmental stresses, which acts synergistically, disturbs the photosynthesis. The OJIP test, elaborated by Strasser and co-workers, enables comparison of the physiological status of plants grown on polluted vs. control areas. The paper shows that the Chl a measurements are very useful tool in evaluating of heavy metal ions influence on perennial grasses, tested as potential phytoremediators. Among 5 cultivars tested, the highest concentration of Cd and Zn ions, not associated with the yield reduction, was detected in the biomass of tall fescue cv. Rahela. Chl a fluorescence interpreted as double normalized curves pointed out Rahela as the outstanding cultivar under the HM ions stress.
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Affiliation(s)
- Grzegorz Żurek
- Department of Grasses, Legumes and Energy Plants, Plant Breeding and Acclimatization Institute IHAR-PIB, Radzików, Błonie, Poland
| | - Krystyna Rybka
- Department of Plant Physiology and Biochemistry, Plant Breeding and Acclimatization Institute IHAR-PIB, Radzików, Błonie, Poland
- * E-mail:
| | - Marta Pogrzeba
- Department of Environmental Biotechnology, Phytoremediation Team, Institute for Ecology of Industrial Areas, Katowice, Poland
| | - Jacek Krzyżak
- Department of Environmental Biotechnology, Phytoremediation Team, Institute for Ecology of Industrial Areas, Katowice, Poland
| | - Kamil Prokopiuk
- Department of Grasses, Legumes and Energy Plants, Plant Breeding and Acclimatization Institute IHAR-PIB, Radzików, Błonie, Poland
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Martinazzo EG, Ramm A, Bacarin MA. The chlorophyll a fluorescence as an indicator of the temperature stress in the leaves of Prunus persica. ACTA ACUST UNITED AC 2013. [DOI: 10.1590/s1677-04202013005000001] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gururani MA, Upadhyaya CP, Strasser RJ, Yu JW, Park SW. Evaluation of abiotic stress tolerance in transgenic potato plants with reduced expression of PSII manganese stabilizing protein. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2013. [PMID: 23199682 DOI: 10.1016/j.plantsci.2012.09.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Manganese stabilizing protein (MSP) is an important component of the Photosystem II (PSII) oxygen evolving complex. In our previous work, transgenic potato plants with reduced expression of MSP (MSP-As) were developed and their physiological and biochemical responses were studied. In this report, we address the response of MSP-As plants toward salinity, heavy metal and osmotic stresses. MSP-As plants treated with NaCl, ZnCl(2) or mannitol solution showed significant level of tolerance under all the stress conditions. Specific enzyme activities of major ROS-scavenging enzymes were found significantly higher in MSP-As plants than the control plants. MSP-As plants accumulated increased levels of proline and low molecular weight metabolites such as ascorbate and α-tocopherol, which indicated that these plants were much more resistant to stress compared to the corresponding control plants. The primary photochemical efficiencies and the OJIP kinetics analyses further confirmed that MSP-As plants were in better optimal health under stress compared to the control plants. Although the exact reason behind the increased stress tolerance in stressed MSP-As plants is unclear, our results strongly indicate the role of MSP of unknown function in abiotic stress tolerance.
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Affiliation(s)
- Mayank Anand Gururani
- Department of Molecular Biotechnology, School of Life & Environmental Sciences, Konkuk University, Seoul, Republic of Korea
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Kalaji HM, Goltsev V, Bosa K, Allakhverdiev SI, Strasser RJ. Experimental in vivo measurements of light emission in plants: a perspective dedicated to David Walker. PHOTOSYNTHESIS RESEARCH 2012; 114:69-96. [PMID: 23065335 DOI: 10.1007/s11120-012-9780-3] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Accepted: 09/03/2012] [Indexed: 05/08/2023]
Abstract
This review is dedicated to David Walker (1928-2012), a pioneer in the field of photosynthesis and chlorophyll fluorescence. We begin this review by presenting the history of light emission studies, from the ancient times. Light emission from plants is of several kinds: prompt fluorescence (PF), delayed fluorescence (DF), thermoluminescence, and phosphorescence. In this article, we focus on PF and DF. Chlorophyll a fluorescence measurements have been used for more than 80 years to study photosynthesis, particularly photosystem II (PSII) since 1961. This technique has become a regular trusted probe in agricultural and biological research. Many measured and calculated parameters are good biomarkers or indicators of plant tolerance to different abiotic and biotic stressors. This would never have been possible without the rapid development of new fluorometers. To date, most of these instruments are based mainly on two different operational principles for measuring variable chlorophyll a fluorescence: (1) a PF signal produced following a pulse-amplitude-modulated excitation and (2) a PF signal emitted during a strong continuous actinic excitation. In addition to fluorometers, other instruments have been developed to measure additional signals, such as DF, originating from PSII, and light-induced absorbance changes due to the photooxidation of P700, from PSI, measured as the absorption decrease (photobleaching) at about 705 nm, or increase at 820 nm. In this review, the technical and theoretical basis of newly developed instruments, allowing for simultaneous measurement of the PF and the DF as well as other parameters is discussed. Special emphasis has been given to a description of comparative measurements on PF and DF. However, DF has been discussed in greater details, since it is much less used and less known than PF, but has a great potential to provide useful qualitative new information on the back reactions of PSII electron transfer. A review concerning the history of fluorometers is also presented.
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Affiliation(s)
- Hazem M Kalaji
- Department of Plant Physiology, Faculty of Agriculture and Biology, Warsaw University of Life Sciences SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland.
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