1
|
Poggi GM, Corneti S, Aloisi I. The Quest for Reliable Drought Stress Screening in Tetraploid Wheat ( Triticum turgidum spp.) Seedlings: Why MDA Quantification after Treatment with 10% PEG-6000 Falls Short. Life (Basel) 2024; 14:517. [PMID: 38672787 PMCID: PMC11051145 DOI: 10.3390/life14040517] [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: 02/12/2024] [Revised: 04/08/2024] [Accepted: 04/13/2024] [Indexed: 04/28/2024] Open
Abstract
Drought stress poses significant productivity challenges to wheat. Several studies suggest that lower malondialdehyde (MDA) content may be a promising trait to identify drought-tolerant wheat genotypes. However, the optimal polyethylene glycol (PEG-6000) concentration for screening seedlings for drought tolerance based on MDA quantification is not clear. The aim of this study was to verify whether a 10% (w/v) PEG-6000 concentration-induced water stress was reliable for discriminating between twenty-two drought-susceptible and drought-tolerant tetraploid wheat (Triticum turgidum spp. durum, turanicum, and carthlicum) accessions based on MDA quantification. To do so, its correlation with morpho-physiological traits, notoriously related to seedling drought tolerance, i.e., Seedling Vigour Index and Seedling Water Content, was evaluated. Results showed that MDA content was not a reliable biomarker for drought tolerance, as it did not correlate significantly with the aforementioned morpho-physiological traits, which showed, on the contrary, high positive correlation with each other. Combining our study with the cited literature, it clearly emerges that different wheat genotypes have different "water stress thresholds", highlighting that using a 10% PEG-6000 concentration for screening wheat seedlings for drought tolerance based on MDA quantification is not reliable. Given the conflicting results in the literature, this study provides important insights for selecting appropriate methods for evaluating wheat seedling drought tolerance.
Collapse
Affiliation(s)
| | | | - Iris Aloisi
- Department of Biological, Geological and Environmental Sciences (BiGeA), Alma Mater Studiorum—University of Bologna, 40126 Bologna, Italy; (G.M.P.); (S.C.)
| |
Collapse
|
2
|
Mishra N, Jiang C, Chen L, Paul A, Chatterjee A, Shen G. Achieving abiotic stress tolerance in plants through antioxidative defense mechanisms. FRONTIERS IN PLANT SCIENCE 2023; 14:1110622. [PMID: 37332720 PMCID: PMC10272748 DOI: 10.3389/fpls.2023.1110622] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 05/15/2023] [Indexed: 06/20/2023]
Abstract
Climate change has increased the overall impact of abiotic stress conditions such as drought, salinity, and extreme temperatures on plants. Abiotic stress adversely affects the growth, development, crop yield, and productivity of plants. When plants are subjected to various environmental stress conditions, the balance between the production of reactive oxygen species and its detoxification through antioxidant mechanisms is disturbed. The extent of disturbance depends on the severity, intensity, and duration of abiotic stress. The equilibrium between the production and elimination of reactive oxygen species is maintained due to both enzymatic and non-enzymatic antioxidative defense mechanisms. Non-enzymatic antioxidants include both lipid-soluble (α-tocopherol and β-carotene) and water-soluble (glutathione, ascorbate, etc.) antioxidants. Ascorbate peroxidase (APX), superoxide dismutase (SOD), catalase (CAT), and glutathione reductase (GR) are major enzymatic antioxidants that are essential for ROS homeostasis. In this review, we intend to discuss various antioxidative defense approaches used to improve abiotic stress tolerance in plants and the mechanism of action of the genes or enzymes involved.
Collapse
Affiliation(s)
- Neelam Mishra
- Department of Botany, St. Joseph’s University, Bangalore, KA, India
| | - Chenkai Jiang
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang, China
| | - Lin Chen
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang, China
| | | | | | - Guoxin Shen
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang, China
| |
Collapse
|
3
|
Yaadesh S, Tomar GS, Kaushik R, Prasanna R, Grover M. Azospirillum-Bacillus associations: synergistic effects on in vitro PGP traits and growth of pearl millet at early seedling stage under limited moisture conditions. 3 Biotech 2023; 13:90. [PMID: 36825258 PMCID: PMC9941397 DOI: 10.1007/s13205-023-03503-4] [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: 11/15/2022] [Accepted: 01/28/2023] [Indexed: 02/25/2023] Open
Abstract
The association of plant beneficial Azospirillum and Bacillus spp. strains expressing different sets of PGP traits may have complementary or supplementary effects on host plants. In the present investigation, A. formosense and Bacillus spp. strains showing diverse PGP traits (IAA production, nitrogenase activity, phosphate, zinc and potassium solubilization, siderophores, antagonism against phytopathogens, osmotic stress tolerance, etc.) were assessed for compatibility by cross-streaking and co-culturing. Under co-culture (Azospirillum + Bacillus), a significant increase in the expression of PGP traits, nitrogenase activity (up to 89%), phosphate solubilization (upto 236%), siderophore production (upto 20%) was observed as compared to individual Azospirillum culture, indicating synergistic effect of co-culture. IAA production was higher in Azospirillum sp. strains as compared to Bacillus spp. strains, when cultured individually; however, when co-cultured, the IAA levels were in the mid-range indicating the contributory effects of compatible strains. The effect of individual Azospirillum and Bacillus strains and their co-inoculation was also assessed on the growth of pearl millet at early stages under moisture-deficit stress imposed using PEG6000 (0, 10, and 20%). Co-inoculation enhanced seed germination (up to 10, 3, and 6% increase under 0, 10, and 20% PEG, respectively, over individual Azospirillum treatment), root traits (increased root hair density and lateral branches), and seedling vigor indices (up to 22, 32, 43% increase in seed vigor index I and 8, 14, and 10% increase in seed vigor index II under 0, 10, 20% PEG, respectively, over individual Azospirillum treatment) under normal as well as moisture-deficit conditions suggesting the role of Bacillus spp. strains in better adaptation of the plants to stress and higher yield potential. The synergistic effect of co-cultured Azospirillum and Bacillus strains on PGP traits indicated metabolic interplay between the two strains which needs to be further understood. The positive effect of co-inoculation on plant growth under moisture-deficit stress indicated the promise of Azospirillum and Bacillus as a synergistic bioformulation for combating nutrient and drought stress in pearl millet, particularly in nutrient-poor dryland agricultural systems. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-023-03503-4.
Collapse
Affiliation(s)
- Sivakumar Yaadesh
- Division of Microbiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - Govind singh Tomar
- Division of Microbiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - Rajeev Kaushik
- Division of Microbiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - Radha Prasanna
- Division of Microbiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| | - Minakshi Grover
- Division of Microbiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012 India
| |
Collapse
|
4
|
Wang L, Zhang X, She Y, Hu C, Wang Q, Wu L, You C, Ke J, He H. Physiological Adaptation Mechanisms to Drought and Rewatering in Water-Saving and Drought-Resistant Rice. Int J Mol Sci 2022; 23:14043. [PMID: 36430523 PMCID: PMC9699083 DOI: 10.3390/ijms232214043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/03/2022] [Accepted: 11/10/2022] [Indexed: 11/16/2022] Open
Abstract
Water-saving and drought-resistant rice (WDR) has high a yield potential in drought. However, the photosynthetic adaptation mechanisms of WDR to drought and rehydration have yet to be conclusively determined. Hanyou 73 (HY73, WDR) and Huanghuazhan (HHZ, drought-sensitive cultivar) rice cultivars were subjected to drought stress and rewatering when the soil water potential was −180 KPa in the booting stage. The leaf physiological characteristics were dynamically determined at 0 KPa, −30 KPa, −70 KPa, −180 KPa, the first, the fifth, and the tenth day after rewatering. It was found that the maximum net photosynthetic rate (Amax) and light saturation point were decreased under drought conditions in both cultivars. The change in dark respiration rate (Rd) in HY73 was not significant, but was markedly different in HHZ. After rewatering, the photosynthetic parameters of HY73 completely returned to the initial state, while the indices in HHZ did not recover. The antioxidant enzyme activities and osmoregulatory substance levels increased with worsening drought conditions and decreased with rewatering duration. HY73 had higher peroxidase (POD) activity as well as proline levels, and lower catalase (CAT) activity, ascorbate peroxidase (APX) activity, malondialdehyde (MDA) level, and soluble protein (SP) content during all of the assessment periods compared with HHZ. In addition, Amax was markedly negatively correlated with superoxide dismutase (SOD), POD, CAT, and SP in HY73 (p < 0.001), while in HHZ, it was negatively correlated with SOD, CAT, APX, MDA, Pro, and SP, and positively correlated with Rd (p < 0.001). These results suggest that WDR has a more simplified adaptation mechanism to protect photosynthetic apparatus from damage in drought and rehydration compared with drought-sensitive cultivars. The high POD activity and great SP content would be considered as important physiological bases to maintain high photosynthetic production potential in WDR.
Collapse
Affiliation(s)
- Lele Wang
- Agricultural College, Anhui Agricultural University, Hefei 230036, China
| | - Xuenan Zhang
- Agricultural College, Anhui Agricultural University, Hefei 230036, China
| | - Yehong She
- Agricultural College, Anhui Agricultural University, Hefei 230036, China
| | - Chao Hu
- Agricultural College, Anhui Agricultural University, Hefei 230036, China
| | - Quan Wang
- Agricultural College, Anhui Agricultural University, Hefei 230036, China
| | - Liquan Wu
- Agricultural College, Anhui Agricultural University, Hefei 230036, China
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing 210095, China
| | - Cuicui You
- Agricultural College, Anhui Agricultural University, Hefei 230036, China
| | - Jian Ke
- Agricultural College, Anhui Agricultural University, Hefei 230036, China
| | - Haibing He
- Agricultural College, Anhui Agricultural University, Hefei 230036, China
| |
Collapse
|
5
|
Rawal N, Pande KR, Shrestha R, Vista SP. Nutrient use efficiency (NUE) of wheat (Triticum aestivum L.) as affected by NPK fertilization. PLoS One 2022; 17:e0262771. [PMID: 35085333 PMCID: PMC8794114 DOI: 10.1371/journal.pone.0262771] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 01/04/2022] [Indexed: 11/18/2022] Open
Abstract
Nutrient use efficiency is crucial for increasing crop yield and quality while reducing fertilizer inputs and minimizing environmental damage. The experiments were carried out in silty clay loam soil of Lalitpur, Nepal, to examine how different amounts of nitrogen (N), phosphorus (P), and potassium (K) influenced crop performance and nutrient efficiency indices in wheat during 2019/20 and 2020/21. The field experiment comprised three factorial randomized complete block designs that were replicated three times. N levels (100, 125, 150 N kg ha-1), P levels (25, 50, 75 P2O5 kg ha-1), and K levels (25, 50, 75 K2O kg ha-1) were three factors evaluated, with a total of 27 treatment combinations. Grain yields were significantly increased by N and K levels and were optimum @ 125 kg N ha-1 and @ 50 kg K2O ha-1 with grain yields of 6.33 t ha-1 and 6.30 t ha-1, respectively. Nutrient levels influenced statistically partial factor productivity, internal efficiency, partial nutrient budget, recovery efficiency, agronomic efficiency, and physiological efficiency of NPK for wheat. Nutrient efficiency was found to be higher at lower doses of their respective nutrients. Higher P and K fertilizer rates enhanced wheat N efficiencies, and the case was relevant for P and K efficiencies as well. Wheat was more responsive to N and K fertilizer, and a lower rate of P application reduced N and K fertilizer efficiency. This study recommends to use N @ 125 kg ha-1, P2O5 @ 25 kg ha-1 and K2O @ 50 kg ha-1 as an optimum rate for efficient nutrient management in wheat in mid-hills of Nepal.
Collapse
Affiliation(s)
- Nabin Rawal
- Department of Soil Science and Agri-Engineering, Agriculture and Forestry University, Rampur, Chitwan, Bagmati, Nepal
- National Soil Science Research Centre, Nepal Agricultural Research Council, Khumaltar, Lalitpur, Bagmati, Nepal
- * E-mail:
| | - Keshab Raj Pande
- Department of Soil Science and Agri-Engineering, Agriculture and Forestry University, Rampur, Chitwan, Bagmati, Nepal
| | - Renuka Shrestha
- National Agronomy Research Centre, Nepal Agricultural Research Council, Lalitpur, Bagmati, Nepal
| | - Shree Prasad Vista
- National Soil Science Research Centre, Nepal Agricultural Research Council, Khumaltar, Lalitpur, Bagmati, Nepal
| |
Collapse
|
6
|
Ramachandran M, Arulbalachandran D, Dilipan E, Ramya S. Comparative analysis of abscisic acid recovery on two varieties of rice (Oryza sativa L.) under drought condition. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2021.102006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
7
|
Host Antony David R, Ramakrishnan M, Maharajan T, BarathiKannan K, Atul Babu G, Daniel MA, Agastian P, Antony Caesar S, Ignacimuthu S. Mining QTL and genes for root traits and biochemical parameters under vegetative drought in South Indian genotypes of finger millet (Eleusine coracana (L.) Gaertn) by association mapping and in silico comparative genomics. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2021.101935] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
8
|
Manaa A, Goussi R, Derbali W, Cantamessa S, Essemine J, Barbato R. Photosynthetic performance of quinoa (Chenopodium quinoa Willd.) after exposure to a gradual drought stress followed by a recovery period. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2021; 1862:148383. [PMID: 33513364 DOI: 10.1016/j.bbabio.2021.148383] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 01/11/2021] [Accepted: 01/21/2021] [Indexed: 02/06/2023]
Abstract
Drought is an abiotic scourge, one of the major environmental stress factors that adversely affect plant growth and photosynthesis machinery through a disruption of cell organelles, arrangement thylakoid membranes and the electron transport chain. Herein, we probed the effect of drought stress on photosynthetic performance of Chenopodium quinoa Willd. Beforehand, plants were subjected to water deficit (as 15% Field Capacity, FC) for one (D-1W) or two weeks (D-2W), and were then re-watered at 95% FC for 2 weeks. Light and electron microscopy analysis of leaves showed no apparent changes in mesophyll cell organization and chloroplast ultrastructure after one week of drought stress, while a swelling of thylakoids and starch accumulation were observed after the prolonged drought (D-2W). The latter induced a decrease in both PSI and PSII quantum yields which was accompanied by an increase in F0 (minimum fluorescence) and a decline in Fm (maximum fluorescence). Drought stress influenced the fluorescence transients, where the major changes at the OJIP prompt FI level were detected in the OJ and IP phases. Prolonged drought induced a decrease in chl a fluorescence at IP phase which was readjusted and established back after re-watering and even more an increase was observed after 2 weeks of recovery. The maximum quantum yield of primary photochemistry (φPo) was unaffected by the different drought stress regimes. Drought induced an increase in the ABS/RC and DI0/RC ratios which was concurrent to a stable φPo (maximum quantum yield of PSII primary photochemistry). A substantial decrease in PI(ABS) was detected especially, during severe drought stress (D-2W) suggesting a drop in the PSII efficiency and the level of electron transport through the plastoquinone pool (PQ pool) towards oxidized PSI RCs (P700+). The immunoblot analysis of the main PSII proteins revealed considerable changes in the D1, D2, CP47, OEC, PsbQ and LHCII proteins under drought. These changes depend on the stress duration and recovery period. The main message of this investigation is the elevated recovery capacities of PSII and PSI photochemical activities after re-watering.
Collapse
Affiliation(s)
- Arafet Manaa
- Laboratory of Extremophile Plants, Centre of Biotechnology of Borj Cedria, B.P. 901, Hammam-Lif 2050, Tunisia.
| | - Rahma Goussi
- Laboratory of Extremophile Plants, Centre of Biotechnology of Borj Cedria, B.P. 901, Hammam-Lif 2050, Tunisia; Faculté des Sciences de Tunis, Université Tunis El Manar, 2092, Tunisie; Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, viale Teresa Michel 11, 15121 Alessandria, Italy
| | - Walid Derbali
- Laboratory of Extremophile Plants, Centre of Biotechnology of Borj Cedria, B.P. 901, Hammam-Lif 2050, Tunisia; Faculté des Sciences de Tunis, Université Tunis El Manar, 2092, Tunisie
| | - Simone Cantamessa
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, viale Teresa Michel 11, 15121 Alessandria, Italy
| | - Jemaa Essemine
- CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Roberto Barbato
- Dipartimento di Scienze e Innovazione Tecnologica, Università del Piemonte Orientale, viale Teresa Michel 11, 15121 Alessandria, Italy
| |
Collapse
|
9
|
Zhang W, Gu P, Zheng X, Wang N, Wu H, He J, Luo X, Zhou L, Zheng Z. Ecological damage of submerged macrophytes by fresh cyanobacteria (FC) and cyanobacterial decomposition solution (CDS). JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123372. [PMID: 32645542 DOI: 10.1016/j.jhazmat.2020.123372] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 06/29/2020] [Accepted: 06/30/2020] [Indexed: 06/11/2023]
Abstract
To investigate the deleterious ecological effects of cyanobacteria on submerged macrophytes, this study investigated the effects of different concentrations of fresh cyanobacteria (FC) and cyanobacteria decomposition solution (CDS) on an experimental group of submerged macrophytes (Vallisneria natans (Lour.) Hara and Myriophyllum verticillatum Linn.). The results showed that FC and CDS not only lead to decrease in biomass and significant changes in enzyme activity and chlorophyll content in tissue, but also affected the permeability of cell membranes. The extent of damage was in the order CDS > FC, and the comprehensive stress resistance of Vallisneria natans (2.994) was more than that of Myriophyllum verticillatum (2.895). In addition, semi-permeable membranes can reduce plant damage by FC and CDS, but cannot completely prevent it. FC and CDS mainly affected the relative distribution of microbial genera on the surface of aquatic plants (p < 0.05). Furthermore, CDS caused irreversible damage to plant cells and induced programmed cell death (PCD) of plants to accelerate their decline. Therefore, FC and CDS may be one of the main reasons for the decline in submerged vegetation. This study provides a scientific basis for evaluating the harmful effects of cyanobacteria on submerged macrophytes.
Collapse
Affiliation(s)
- Weizhen Zhang
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China.
| | - Peng Gu
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China
| | - Xiaowei Zheng
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China
| | - Ning Wang
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China
| | - Hanqi Wu
- College of Environment, Hohai University, Nanjing, 211106, China
| | - Jian He
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China
| | - Xingzhang Luo
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China
| | - Liang Zhou
- Nanjing Perennial Root Flowers Botanical Garden, 210017, China
| | - Zheng Zheng
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China.
| |
Collapse
|
10
|
Macías FA, Durán AG, Molinillo JMG. Allelopathy: The Chemical Language of Plants. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2020; 112:1-84. [PMID: 33306172 DOI: 10.1007/978-3-030-52966-6_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
In Nature, the oldest method of communication between living systems is the chemical language. Plants, due to their lack of mobility, have developed the most sophisticated way of chemical communication. Despite that many examples involve this chemical communication process-allelopathy, there is still a lack of information about specific allelochemicals released into the environment, their purpose, as well as in-depth studies on the chemistry underground. These findings are critical to gain a better understanding of the role of these compounds and open up a wide range of possibilities and applications, especially in agriculture and phytomedicine. The most relevant aspects regarding the chemical language of plants, namely kind of allelochemicals, have been investigated, as well as their releasing mechanisms and their purpose will be described in this chapter.
Collapse
Affiliation(s)
- Francisco A Macías
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Campus de Excelencia Internacional (ceiA3), School of Science, University of Cadiz, C/República Saharaui 7, 11510, Puerto Real, Cadiz, Spain.
| | - Alexandra G Durán
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Campus de Excelencia Internacional (ceiA3), School of Science, University of Cadiz, C/República Saharaui 7, 11510, Puerto Real, Cadiz, Spain
| | - José M G Molinillo
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Campus de Excelencia Internacional (ceiA3), School of Science, University of Cadiz, C/República Saharaui 7, 11510, Puerto Real, Cadiz, Spain
| |
Collapse
|
11
|
Kim SE, Lee CJ, Ji CY, Kim HS, Park SU, Lim YH, Park WS, Ahn MJ, Bian X, Xie Y, Guo X, Kwak SS. Transgenic sweetpotato plants overexpressing tocopherol cyclase display enhanced α-tocopherol content and abiotic stress tolerance. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 144:436-444. [PMID: 31639559 DOI: 10.1016/j.plaphy.2019.09.046] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/27/2019] [Accepted: 09/29/2019] [Indexed: 05/14/2023]
Abstract
Oxidative stress caused by reactive oxygen species (ROS) under various environmental stresses significantly reduces plant productivity. Tocopherols (collectively known as vitamin E) are a group of lipophilic antioxidants that protect cellular components against oxidative stress. Previously, we isolated five tocopherol biosynthesis genes from sweetpotato (Ipomoea batatas [L.] Lam) plants, including tocopherol cyclase (IbTC). In this study, we generated transgenic sweetpotato plants overexpressing IbTC under the control of cauliflower mosaic virus (CaMV) 35S promoter (referred to as TC plants) via Agrobacterium-mediated transformation to understand the function of IbTC in sweetpotato. Three transgenic lines (TC2, TC9, and TC11) with high transcript levels of IbTC were selected for further characterization. High performance liquid chromatography (HPLC) analysis revealed that α-tocopherol was the most predominant form of tocopherol in sweetpotato tissues. The content of α-tocopherol was 1.6-3.3-fold higher in TC leaves than in non-transgenic (NT) leaves. No significant difference was observed in the tocopherol content of storage roots between TC and NT plants. Additionally, compared with NT plants, TC plants showed enhanced tolerance to multiple environmental stresses, including salt, drought, and oxidative stresses, and showed consistently higher levels of photosystem II activity and chlorophyll content, indicating abiotic stress tolerance. These results suggest IbTC as a strong candidate gene for the development of sweetpotato cultivars with increased α-tocopherol levels and enhanced abiotic stress tolerance.
Collapse
Affiliation(s)
- So-Eun Kim
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, South Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, South Korea
| | - Chan-Ju Lee
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, South Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, South Korea
| | - Chang Yoon Ji
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, South Korea
| | - Ho Soo Kim
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, South Korea
| | - Sul-U Park
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, South Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, South Korea
| | - Ye-Hoon Lim
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, South Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, South Korea
| | - Woo Sung Park
- College of Pharmacy and Research Institute of Life Sciences, Gyeongsang National University, 501 Jinjudae-ro, Jinju, 52828, South Korea
| | - Mi-Jeong Ahn
- College of Pharmacy and Research Institute of Life Sciences, Gyeongsang National University, 501 Jinjudae-ro, Jinju, 52828, South Korea
| | - Xiaofeng Bian
- Institute of Food Crops, Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, Jiangsu, China
| | - Yizhi Xie
- Institute of Food Crops, Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, Jiangsu, China
| | - Xiaodong Guo
- Institute of Food Crops, Provincial Key Laboratory of Agrobiology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, Jiangsu, China
| | - Sang-Soo Kwak
- Plant Systems Engineering Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Daejeon, 34141, South Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Daejeon, 34113, South Korea.
| |
Collapse
|
12
|
Genome-wide identification of the HKT genes in five Rosaceae species and expression analysis of HKT genes in response to salt-stress in Fragaria vesca. Genes Genomics 2018; 41:325-336. [DOI: 10.1007/s13258-018-0767-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 11/13/2018] [Indexed: 11/26/2022]
|
13
|
Toscano S, Ferrante A, Tribulato A, Romano D. Leaf physiological and anatomical responses of Lantana and Ligustrum species under different water availability. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 127:380-392. [PMID: 29665510 DOI: 10.1016/j.plaphy.2018.04.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 03/29/2018] [Accepted: 04/09/2018] [Indexed: 06/08/2023]
Abstract
Understanding the plant characteristics that support tolerance to water stress is important in choosing plants in arid or semi-arid environments, such as the Mediterranean. In particular, leaf characteristics can affect the response of plants to water stress. In order to understand how plants with different leaf features can overcome water stress, four water regimes were adopted on two species that are widespread in the Mediterranean environment, Lantana camara and Ligustrum lucidum. The four treatments were: control (C), in which the pot substrate moisture was maintained close to water container capacity (WCC), light deficit irrigation (LDI) irrigated at 75% of WCC, moderate deficit irrigation (MDI) at 50% of WCC, and severe deficit irrigation (SDI) at 25% of WCC. To better understand the action mechanisms, the trial was repeated twice (from January to May, and from May to September). Morphological, anatomical and physiological data were measured to identify the action mechanisms. Water deficit significantly decreased the biomass accumulation in both species during the experimental growth period. In Lantana, significant variations in total leaf area and leaf number were registered between C and SDI, while in Ligustrum, the differences were significant only for total leaf area. The water deficit treatments reduced the leaf thickness especially in Ligustrum. In both species, photosynthesis reduction was related to stomatal closure. Ligustrum showed a higher variability among treatments indicating a faster and more efficient response to water limitations compared to Lantana, as also demonstrated by the lower biomass reduction in the most severe water stress treatment.
Collapse
Affiliation(s)
- Stefania Toscano
- Department of Agriculture, Food and Environment (Di3A), Università degli Studi di Catania, Via Valdisavoia 5, 95123, Catania, Italy
| | - Antonio Ferrante
- Department of Agricultural and Environmental Sciences, Università degli Studi di Milano, Via Celoria 2, 1-20133, Italy
| | - Alessandro Tribulato
- Department of Agriculture, Food and Environment (Di3A), Università degli Studi di Catania, Via Valdisavoia 5, 95123, Catania, Italy
| | - Daniela Romano
- Department of Agriculture, Food and Environment (Di3A), Università degli Studi di Catania, Via Valdisavoia 5, 95123, Catania, Italy; CNR - Trees and Timber Institute (IVALSA), Via P. Gaifami 18, 95126, Catania, Italy.
| |
Collapse
|
14
|
Gruszka D, Janeczko A, Dziurka M, Pociecha E, Fodor J. Non-enzymatic antioxidant accumulations in BR-deficient and BR-insensitive barley mutants under control and drought conditions. PHYSIOLOGIA PLANTARUM 2018; 163:155-169. [PMID: 29215730 DOI: 10.1111/ppl.12674] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 11/27/2017] [Indexed: 05/12/2023]
Abstract
Drought is one of the most adverse stresses that affect plant growth and yield. Disturbances in metabolic activity resulting from drought cause overproduction of reactive oxygen species. It is postulated that brassinosteroids (BRs) regulate plant tolerance to the stress conditions, but the underlying mechanisms remain largely unknown. An involvement of endogenous BRs in regulation of the antioxidant homeostasis is not fully clarified either. Therefore, the aim of this study was to elucidate the role of endogenous BRs in regulation of non-enzymatic antioxidants in barley (Hordeum vulgare) under control and drought conditions. The plant material included the 'Bowman' cultivar and a group of semi-dwarf near-isogenic lines (NILs), representing mutants deficient in BR biosynthesis or signaling. In general, accumulations of 11 compounds representing various types of non-enzymatic antioxidants were analyzed under both conditions. The analyses of accumulations of reduced and oxidized forms of ascorbate indicated that the BR mutants contain significantly higher contents of dehydroascorbic acid under drought conditions when compared with the 'Bowman' cultivar. The analysis of glutathione accumulation indicated that under the control conditions the BR-insensitive NILs contained significantly lower concentrations of this antioxidant when compared with the rest of genotypes. Therefore, we postulate that BR sensitivity is required for normal accumulation of glutathione. A complete accumulation profile of various tocopherols indicated that functional BR biosynthesis and signaling are required for their normal accumulation under both conditions. Results of this study provided an insight into the role of endogenous BRs in regulation of the non-enzymatic antioxidant homeostasis.
Collapse
Affiliation(s)
- Damian Gruszka
- Department of Genetics, Faculty of Biology and Environment Protection, University of Silesia, Katowice, Poland
| | - Anna Janeczko
- The Franciszek Gorski Institute of Plant Physiology, Polish Academy of Sciences, Krakow, Poland
| | - Michal Dziurka
- The Franciszek Gorski Institute of Plant Physiology, Polish Academy of Sciences, Krakow, Poland
| | - Ewa Pociecha
- Department of Plant Physiology, University of Agriculture in Krakow, Krakow, Poland
| | - Jozsef Fodor
- Plant Protection Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary
| |
Collapse
|
15
|
Hassan HM, Mina SA, Bishr MM, Khalik SMA. Influence of foliar spray of ethephon and water stress on the essential oil composition and impact on the cytotoxic activity of Thymus vulgaris aerial parts. Nat Prod Res 2018; 33:2714-2717. [PMID: 29629567 DOI: 10.1080/14786419.2018.1460843] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Thymus vulgaris, (Lamiaceae), essential oils composition and yield, were found to be greatly influenced by water stress and growth enhancers. Therefore, three controlled cultivation conditions were applied to achieve the highest essential oil productivity of T. vulgaris. The essential oils obtained by hydro-distillation of the aerial parts were analyzed using (GC-MS). The tested plant subjected to drought showed a 66% increase in the essential oil yield, while those subjected to drought stress and foliar spray showed 57.1% increase and the regularly irrigated group with foliar spraying showed 23.8% increase relative to the control group. The cytotoxic activity of T. vulgaris essential oils was evaluated against lung (A-549), colon (HCT-116), intestinal (CACO2) and breast (MCF-7) carcinoma using the cell viability assay. The lowest IC50 values 0.44 and 0.33 μg/mL were seen against (HCT-116) and (CACO2) cells respectively. These IC50 values were lower than that of doxorubicin used as reference drug.
Collapse
Affiliation(s)
- H M Hassan
- a Faculty of Pharmacy, Pharmacognosy Department , Helwan University , Cairo , Egypt
| | - S A Mina
- a Faculty of Pharmacy, Pharmacognosy Department , Helwan University , Cairo , Egypt
| | - M M Bishr
- b Pharmaceuticals and Medicinal Plants (Mepaco) , Enshas El Raml Sharkyah , Egypt
| | - S M A Khalik
- a Faculty of Pharmacy, Pharmacognosy Department , Helwan University , Cairo , Egypt.,c Nahda University , Bani Sweif , Egypt
| |
Collapse
|
16
|
ROSA DEREKB, SCALON SILVANAP, CREMON THAIS, CECCON FELIPE, DRESCH DAIANEM. Gas exchange and antioxidant activity in seedlings of C opaifera langsdorffii Desf. under different water conditions. AN ACAD BRAS CIENC 2017; 89:3039-3050. [DOI: 10.1590/0001-3765201720170499] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Accepted: 08/15/2017] [Indexed: 11/22/2022] Open
|
17
|
Zhang G, Zhang M, Zhao Z, Ren Y, Li Q, Wang W. Wheat TaPUB1 modulates plant drought stress resistance by improving antioxidant capability. Sci Rep 2017; 7:7549. [PMID: 28790447 PMCID: PMC5548723 DOI: 10.1038/s41598-017-08181-w] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 07/10/2017] [Indexed: 01/29/2023] Open
Abstract
E3 ligases play significant roles in plant stress tolerance by targeting specific substrate proteins for post-translational modification. In a previous study, we cloned TaPUB1 from Triticum aestivum L., which encodes a U-box E3 ligase. Real-time polymerase chain reaction revealed that the gene was up-regulated under drought stress. To investigate the function of TaPUB1 in the response of plants to drought, we generated transgenic Nicotiana benthamiana (N. benthamiana) plants constitutively expressing TaPUB1 under the CaMV35S promoter. Compared to wild type (WT), the transgenic plants had higher germination and seedling survival rates as well as higher photosynthetic rate and water retention, suggesting that the overexpression of TaPUB1 enhanced the drought tolerance of the TaPUB1 overexpressing (OE) plants. Moreover, less accumulation of reactive oxygen species (ROS) and stronger antioxidant capacity were detected in the OE plants than in the WT plants. To characterize the mechanisms involved, methyl viologen (MV) was used to induce oxidative stress conditions and we identified the functions of this gene in the plant tolerance to oxidative stress. Our results suggest that TaPUB1 positively modulates plant drought stress resistance potential by improving their antioxidant capacity.
Collapse
Affiliation(s)
- Guangqiang Zhang
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, 271018, P.R. China
| | - Meng Zhang
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, 271018, P.R. China
- Collaborative Innovation Center, Jining Medical University, Jining, Shandong, 272067, P.R. China
| | - Zhongxian Zhao
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, 271018, P.R. China
| | - Yuanqing Ren
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, 271018, P.R. China
| | - Qinxue Li
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, 271018, P.R. China
| | - Wei Wang
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, 271018, P.R. China.
| |
Collapse
|
18
|
Shaw AK, Bhardwaj PK, Ghosh S, Azahar I, Adhikari S, Adhikari A, Sherpa AR, Saha SK, Hossain Z. Profiling of BABA-induced differentially expressed genes of Zea mays using suppression subtractive hybridization. RSC Adv 2017. [DOI: 10.1039/c7ra06220f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
This study aims to identify differentially expressed transcripts in BABA-primed maize leaves using suppression subtractive hybridization (SSH) strategy. Findings shed new light on the BABA potentiated defense mechanisms in plants.
Collapse
Affiliation(s)
- Arun K. Shaw
- Department of Botany
- West Bengal State University
- Kolkata – 700126
- India
| | - Pardeep K. Bhardwaj
- Plant Bioresources Division
- Institute of Bioresources and Sustainable Development
- Sikkim Centre
- India
| | - Supriya Ghosh
- Department of Botany
- University of Kalyani
- Kalyani 741235
- India
| | - Ikbal Azahar
- Department of Botany
- University of Kalyani
- Kalyani 741235
- India
| | | | - Ayan Adhikari
- Department of Botany
- University of Kalyani
- Kalyani 741235
- India
| | - Ang R. Sherpa
- Department of Botany
- West Bengal State University
- Kolkata – 700126
- India
| | - Samir K. Saha
- Department of Zoology
- West Bengal State University
- Kolkata – 700126
- India
| | - Zahed Hossain
- Department of Botany
- University of Kalyani
- Kalyani 741235
- India
| |
Collapse
|
19
|
Differential response to physiological drought stress in tolerant and susceptible cultivars of canola. ACTA ACUST UNITED AC 2016. [DOI: 10.1007/s40502-016-0239-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
20
|
The effect of triazole induced photosynthetic pigments and biochemical constituents of Zea mays L. (Maize) under drought stress. APPLIED NANOSCIENCE 2015. [DOI: 10.1007/s13204-015-0482-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
21
|
Ibrahim HM. Selenium Pretreatment Regulates the Antioxidant Defense System and Reduces Oxidative Stress on Drought-Stressed Wheat (Triticum aestivum L.) Plants. ACTA ACUST UNITED AC 2014. [DOI: 10.3923/ajps.2014.120.128] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
22
|
Du F, Shi H, Zhang X, Xu X. Responses of reactive oxygen scavenging enzymes, proline and malondialdehyde to water deficits among six secondary successional seral species in Loess Plateau. PLoS One 2014; 9:e98872. [PMID: 24914928 PMCID: PMC4051577 DOI: 10.1371/journal.pone.0098872] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 05/08/2014] [Indexed: 11/19/2022] Open
Abstract
Drought can impact local vegetation dynamics in a long term. In order to predict the possible successional pathway of local community under drought, the responses of some drought resistance indices of six successional seral species in the semi-arid Loss Hilly Region of China were illustrated and compared on three levels of soil water deficits along three growing months (7, 8 and 9). The results showed that: 1) the six species had significant differences in SOD, POD activities and MDA content. The rank correlations between SOD, POD activities and the successional niche positions of the six species were positive, and the correlation between MDA content and the niche positions was negative; 2) activities of SOD, CAT and POD, and content of proline and MDA had significant differences among the three months; 3) there existed significant interactions of SOD, CAT, POD activities and MDA content between months and species. With an exception, no interaction of proline was found. Proline in leaves had a general decline in reproductive month; 4) SOD, CAT, POD activities and proline content had negative correlations with MDA content. Among which, the correlation between SOD activity and MDA content was significant. The results implied that, in arid or semiarid region, the species at later successional stage tend to have strong drought resistance than those at early stage. Anti-drought indices can partially interpret the pathway of community succession in the drought impacted area. SOD activity is more distinct and important on the scope of protecting membrane damage through the scavenging of ROS on exposure to drought.
Collapse
Affiliation(s)
- Feng Du
- Institute of soil and Water Conservation, Northwest Sci-Tech University of Agriculture and Forestry, Yangling, Shaanxi, China
- Institute of soil and Water Conservation, Chinese Academy of Science, Yangling, Shaanxi, China
- State key laboratory of soil erosion and dryland farming on Loess Plateau, Yangling, Shaanxi, China
| | - Huijun Shi
- Institute of soil and Water Conservation, Northwest Sci-Tech University of Agriculture and Forestry, Yangling, Shaanxi, China
| | - Xingchang Zhang
- Institute of soil and Water Conservation, Northwest Sci-Tech University of Agriculture and Forestry, Yangling, Shaanxi, China
- Institute of soil and Water Conservation, Chinese Academy of Science, Yangling, Shaanxi, China
- State key laboratory of soil erosion and dryland farming on Loess Plateau, Yangling, Shaanxi, China
| | - Xuexuan Xu
- Institute of soil and Water Conservation, Northwest Sci-Tech University of Agriculture and Forestry, Yangling, Shaanxi, China
- Institute of soil and Water Conservation, Chinese Academy of Science, Yangling, Shaanxi, China
| |
Collapse
|
23
|
Murad AM, Molinari HBC, Magalhães BS, Franco AC, Takahashi FSC, de Oliveira- NG, Franco OL, Quirino BF. Physiological and proteomic analyses of Saccharum spp. grown under salt stress. PLoS One 2014; 9:e98463. [PMID: 24893295 PMCID: PMC4043529 DOI: 10.1371/journal.pone.0098463] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Accepted: 05/04/2014] [Indexed: 11/18/2022] Open
Abstract
Sugarcane (Saccharum spp.) is the world most productive sugar producing crop, making an understanding of its stress physiology key to increasing both sugar and ethanol production. To understand the behavior and salt tolerance mechanisms of sugarcane, two cultivars commonly used in Brazilian agriculture, RB867515 and RB855536, were submitted to salt stress for 48 days. Physiological parameters including net photosynthesis, water potential, dry root and shoot mass and malondialdehyde (MDA) content of leaves were determined. Control plants of the two cultivars showed similar values for most traits apart from higher root dry mass in RB867515. Both cultivars behaved similarly during salt stress, except for MDA levels for which there was a delay in the response for cultivar RB867515. Analysis of leaf macro- and micronutrients concentrations was performed and the concentration of Mn(2+) increased on day 48 for both cultivars. In parallel, to observe the effects of salt stress on protein levels in leaves of the RB867515 cultivar, two-dimensional gel electrophoresis followed by MS analysis was performed. Four proteins were differentially expressed between control and salt-treated plants. Fructose 1,6-bisphosphate aldolase was down-regulated, a germin-like protein and glyceraldehyde 3-phosphate dehydrogenase showed increased expression levels under salt stress, and heat-shock protein 70 was expressed only in salt-treated plants. These proteins are involved in energy metabolism and defense-related responses and we suggest that they may be involved in protection mechanisms against salt stress in sugarcane.
Collapse
Affiliation(s)
- Aline Melro Murad
- Genome Sciences and Biotechnology Program, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil
- Centro de Análises Proteômicas e Bioquímicas, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil
| | | | - Beatriz Simas Magalhães
- Genome Sciences and Biotechnology Program, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil
| | - Augusto Cesar Franco
- Department of Botany, Universidade de Brasília, Brasília, Distrito Federal, Brazil
| | | | - Nelson Gomes de Oliveira-
- Centro de Análises Proteômicas e Bioquímicas, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil
| | - Octávio Luiz Franco
- Genome Sciences and Biotechnology Program, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil
- Centro de Análises Proteômicas e Bioquímicas, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil
- * E-mail: (OLF); (BFQ)
| | - Betania Ferraz Quirino
- Genome Sciences and Biotechnology Program, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil
- Embrapa-Agroenergy, Brasília, Distrito Federal, Brazil
- * E-mail: (OLF); (BFQ)
| |
Collapse
|
24
|
Hameed A, Wu QS, Abd-Allah EF, Hashem A, Kumar A, Lone HA, Ahmad P. Role of AM Fungi in Alleviating Drought Stress in Plants. USE OF MICROBES FOR THE ALLEVIATION OF SOIL STRESSES 2014:55-75. [DOI: 10.1007/978-1-4939-0721-2_4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
25
|
Ajithkumar IP, Panneerselvam R. Osmolyte accumulation, photosynthetic pigment and growth of Setaria italica (L.) P. Beauv. under drought stress. ASIAN PACIFIC JOURNAL OF REPRODUCTION 2013. [DOI: 10.1016/s2305-0500(13)60151-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
|
26
|
Hussain N, Irshad F, Jabeen Z, Shamsi IH, Li Z, Jiang L. Biosynthesis, structural, and functional attributes of tocopherols in planta; past, present, and future perspectives. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:6137-49. [PMID: 23713813 DOI: 10.1021/jf4010302] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Tocopherols are lipophilic molecules, ubiquitously synthesized in all photosynthetic organisms. Being a group of vitamin E compounds, they play an essential role in human nutrition and health. Despite their structural and functional attributes as important antioxidants in plants, it would be misleading to ignore the potential roles of tocopherols beyond their antioxidant properties in planta. Detailed characterization of mutants and transgenic plants, including Arabidopsis (vte1, vte2, vte4, and so on), maize (sxd1) mutants, and transgenic potato and tobacco lines altered in tocopherol biosynthesis and contents, has led to surprising outcomes regarding the additional functions of these molecules. Thus, the aim of this review is to highlight the past and present research findings on tocopherols' structural, biosynthesis, and functional properties in plants. Special emphasis is given to their suggested functions in planta, such as cell signaling, hormonal interactions, and coordinated response of tocopherols to other antioxidants under abiotic stresses. Moreover, some important questions about possible new functions of tocopherols will be discussed as future prospects to stimulate further research.
Collapse
Affiliation(s)
- Nazim Hussain
- Key Laboratory of Crop Germplasm Resources of Zhejiang Province, College of Agriculture and Biotechnology, Zhejiang University, 866 Yu-Hang-Tang Road, Hangzhou 310058, People's Republic of China
| | | | | | | | | | | |
Collapse
|
27
|
Murshed R, Lopez-Lauri F, Sallanon H. Effect of water stress on antioxidant systems and oxidative parameters in fruits of tomato (Solanum lycopersicon L, cv. Micro-tom). PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2013; 19:363-78. [PMID: 24431505 PMCID: PMC3715648 DOI: 10.1007/s12298-013-0173-7] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The effects of different levels of water stress on oxidative parameters (H2O2 and MDA), the total pool sizes of ascorbate, the activities of antioxidant enzymes superoxide dismutase (SOD) and catalase (CAT), as well as the activities and relative transcript levels of the enzymes of ascorbate-glutathione cycle ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR) and glutathione reductase (GR) were studied in the fruit of tomato (Solanum lycopersicum L. cv. Micro-Tom). Plants were subjected to three levels of water stress (S50, S25 and S0) and fruits at different development stages were harvested after 3, 6 and 10 days of stress. Changes in H2O2 and MDA contents indicated that water stress induced oxidative stress in fruits. The concentrations of ascorbate (AsA) and dehydroascorbate (DHA) generally modified with water stress treatments. Moreover, changes in SOD and CAT activities and DHAR, MDHAR, APX and GR activities and relative transcript levels were dependent on the fruit development stage and the intensity and the duration of water stress. These results suggest that the response of antioxidant systems of tomato fruits to oxidative stress induced by water stress treatments was different depending on the fruit development stage.
Collapse
Affiliation(s)
- Ramzi Murshed
- />Department of Horticultural Sciences, Faculty of Agriculture, University of Damascus, Damascus, P. O. Box: 30621, Syria
| | - Félicie Lopez-Lauri
- />Laboratoire de Physiologie des Fruits et Légumes, Campus agrosciences, 84916 Avignon Cedex 9, France
| | - Huguette Sallanon
- />Laboratoire de Physiologie des Fruits et Légumes, Campus agrosciences, 84916 Avignon Cedex 9, France
| |
Collapse
|
28
|
Li J, Zhang QY, Gao ZH, Wang F, Duan K, Ye ZW, Gao QH. Genome-wide identification and comparative expression analysis of NBS-LRR-encoding genes upon Colletotrichum gloeosporioides infection in two ecotypes of Fragaria vesca. Gene 2013; 527:215-27. [PMID: 23806759 DOI: 10.1016/j.gene.2013.06.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 06/04/2013] [Accepted: 06/05/2013] [Indexed: 11/24/2022]
Abstract
Anthracnose caused by Colletotrichum spp. is one of the most destructive diseases of cultivated strawberry (Fragaria×ananassa Duchesne) worldwide. The correlation between NBS-LRR genes, the largest class of known resistance genes, and strawberry anthracnose resistance has been elusive. BLAST search in NCBI identified 94 FvNBSs in the diploid genome of strawberry Fragaria vesca, with 67 of the TIR-NBS-LRR type. At least 36 FvNBSs were expressed, with 25% being non-coding genes. Two F. vesca ecotypes, HLJ and YW, showed great variations in both morphological and physiological responses upon C. gloeosporioides infection. qRT-PCR revealed that 5 of the 12 leaf-expressed FvNBSs displaying opposite transcription responses to C. gloeosporioides infection in two ecotypes. These results showed that the transcriptional responses of several FvNBSs were involved in the ecotype-specific responses to C. gloeosporioides in F. vesca. These FvNBSs hold potential in characterizing molecular components and developing novel markers associated with anthracnose resistance in strawberry.
Collapse
Affiliation(s)
- Jing Li
- Shanghai Key Laboratory of Protected Horticultural Technology, Forestry and Fruit Tree Research Institute, Shanghai Academy of Agricultural Sciences (SAAS), Shanghai 201403, China
| | | | | | | | | | | | | |
Collapse
|
29
|
Signal transduction during cold, salt, and drought stresses in plants. Mol Biol Rep 2011; 39:969-87. [PMID: 21573796 DOI: 10.1007/s11033-011-0823-1] [Citation(s) in RCA: 415] [Impact Index Per Article: 31.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2010] [Accepted: 05/03/2011] [Indexed: 01/10/2023]
Abstract
Abiotic stresses, especially cold, salinity and drought, are the primary causes of crop loss worldwide. Plant adaptation to environmental stresses is dependent upon the activation of cascades of molecular networks involved in stress perception, signal transduction, and the expression of specific stress-related genes and metabolites. Plants have stress-specific adaptive responses as well as responses which protect the plants from more than one environmental stress. There are multiple stress perception and signaling pathways, some of which are specific, but others may cross-talk at various steps. In this review article, we first expound the general stress signal transduction pathways, and then highlight various aspects of biotic stresses signal transduction networks. On the genetic analysis, many cold induced pathways are activated to protect plants from deleterious effects of cold stress, but till date, most studied pathway is ICE-CBF-COR signaling pathway. The Salt-Overly-Sensitive (SOS) pathway, identified through isolation and study of the sos1, sos2, and sos3 mutants, is essential for maintaining favorable ion ratios in the cytoplasm and for tolerance of salt stress. Both ABA-dependent and -independent signaling pathways appear to be involved in osmotic stress tolerance. ROS play a dual role in the response of plants to abiotic stresses functioning as toxic by-products of stress metabolism, as well as important signal transduction molecules and the ROS signaling networks can control growth, development, and stress response. Finally, we talk about the common regulatory system and cross-talk among biotic stresses, with particular emphasis on the MAPK cascades and the cross-talk between ABA signaling and biotic signaling.
Collapse
|
30
|
Ouyang S, He S, Liu P, Zhang W, Zhang J, Chen S. The role of tocopherol cyclase in salt stress tolerance of rice (Oryza sativa). SCIENCE CHINA-LIFE SCIENCES 2011; 54:181-8. [DOI: 10.1007/s11427-011-4138-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2010] [Accepted: 06/28/2010] [Indexed: 01/08/2023]
|
31
|
Gill SS, Tuteja N. Reactive oxygen species and antioxidant machinery in abiotic stress tolerance in crop plants. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2010; 48:909-30. [PMID: 20870416 DOI: 10.1016/j.plaphy.2010.08.016] [Citation(s) in RCA: 4348] [Impact Index Per Article: 310.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2010] [Revised: 08/11/2010] [Accepted: 08/28/2010] [Indexed: 05/18/2023]
Abstract
Various abiotic stresses lead to the overproduction of reactive oxygen species (ROS) in plants which are highly reactive and toxic and cause damage to proteins, lipids, carbohydrates and DNA which ultimately results in oxidative stress. The ROS comprises both free radical (O(2)(-), superoxide radicals; OH, hydroxyl radical; HO(2), perhydroxy radical and RO, alkoxy radicals) and non-radical (molecular) forms (H(2)O(2), hydrogen peroxide and (1)O(2), singlet oxygen). In chloroplasts, photosystem I and II (PSI and PSII) are the major sites for the production of (1)O(2) and O(2)(-). In mitochondria, complex I, ubiquinone and complex III of electron transport chain (ETC) are the major sites for the generation of O(2)(-). The antioxidant defense machinery protects plants against oxidative stress damages. Plants possess very efficient enzymatic (superoxide dismutase, SOD; catalase, CAT; ascorbate peroxidase, APX; glutathione reductase, GR; monodehydroascorbate reductase, MDHAR; dehydroascorbate reductase, DHAR; glutathione peroxidase, GPX; guaicol peroxidase, GOPX and glutathione-S- transferase, GST) and non-enzymatic (ascorbic acid, ASH; glutathione, GSH; phenolic compounds, alkaloids, non-protein amino acids and α-tocopherols) antioxidant defense systems which work in concert to control the cascades of uncontrolled oxidation and protect plant cells from oxidative damage by scavenging of ROS. ROS also influence the expression of a number of genes and therefore control the many processes like growth, cell cycle, programmed cell death (PCD), abiotic stress responses, pathogen defense, systemic signaling and development. In this review, we describe the biochemistry of ROS and their production sites, and ROS scavenging antioxidant defense machinery.
Collapse
Affiliation(s)
- Sarvajeet Singh Gill
- Plant Molecular Biology Group, International Centre for Genetic Engineering and Biotechnology, Aruna Asaf Ali Marg, New Delhi 110 067, India
| | | |
Collapse
|
32
|
Asrar AWA, Elhindi KM. Alleviation of drought stress of marigold (Tagetes erecta) plants by using arbuscular mycorrhizal fungi. Saudi J Biol Sci 2010; 18:93-8. [PMID: 23961109 DOI: 10.1016/j.sjbs.2010.06.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2010] [Revised: 06/23/2010] [Accepted: 06/23/2010] [Indexed: 11/18/2022] Open
Abstract
The effect of an arbuscular mycorrhizal fungus "AMF" (Glomus constrictum Trappe) on growth, pigments, and phosphorous content of marigold (Tagetes erecta) plant grown under different levels of drought stress was investigated. The applied drought stress levels reduced growth vigor (i.e. plant height, shoot dry weight, flower diameter as well as its fresh and dry weights) of mycorrhizal and non-mycorrhizal plant as compared to control plant (non-drought stressed plant). The presence of mycorrhizal fungus, however, stimulated all growth parameters of the treated plant comparing to non-mycorrhizal treated plant. The photosynthetic pigments (carotene in flowers and chlorophylls a and b in leaves) were also stimulated by the mycorrhizal fungi of well-watered as well as of water-stressed plants. The total pigments of mycorrhizal plants grown under well-watered conditions were higher than those of non-mycorrhizal ones by 60%. In most cases, drought-stressed mycorrhizal plants were significantly better than those of the non-mycorrhizal plants. So, the overall results suggest that mycorrhizal fungal colonization affects host plant positively on growth, pigments, and phosphorous content, flower quality and thereby alleviates the stress imposed by water with holding.
Collapse
Affiliation(s)
- Abdul-Wasea A Asrar
- Plant Production Department, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
| | | |
Collapse
|
33
|
Chang P, Zhang Z, Yang C. Molecularly imprinted polymer-based chemiluminescence array sensor for the detection of proline. Anal Chim Acta 2010; 666:70-5. [DOI: 10.1016/j.aca.2010.03.031] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2010] [Revised: 03/11/2010] [Accepted: 03/15/2010] [Indexed: 11/24/2022]
|
34
|
Shao HB, Chu LY, Jaleel CA, Manivannan P, Panneerselvam R, Shao MA. Understanding water deficit stress-induced changes in the basic metabolism of higher plants - biotechnologically and sustainably improving agriculture and the ecoenvironment in arid regions of the globe. Crit Rev Biotechnol 2009; 29:131-51. [PMID: 19412828 DOI: 10.1080/07388550902869792] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Water is vital for plant growth, development and productivity. Permanent or temporary water deficit stress limits the growth and distribution of natural and artificial vegetation and the performance of cultivated plants (crops) more than any other environmental factor. Productive and sustainable agriculture necessitates growing plants (crops) in arid and semiarid regions with less input of precious resources such as fresh water. For a better understanding and rapid improvement of soil-water stress tolerance in these regions, especially in the water-wind eroded crossing region, it is very important to link physiological and biochemical studies to molecular work in genetically tractable model plants and important native plants, and further extending them to practical ecological restoration and efficient crop production. Although basic studies and practices aimed at improving soil water stress resistance and plant water use efficiency have been carried out for many years, the mechanisms involved at different scales are still not clear. Further understanding and manipulating soil-plant water relationships and soil-water stress tolerance at the scales of ecology, physiology and molecular biology can significantly improve plant productivity and environmental quality. Currently, post-genomics and metabolomics are very important in exploring anti-drought gene resources in various life forms, but modern agriculturally sustainable development must be combined with plant physiological measures in the field, on the basis of which post-genomics and metabolomics have further practical prospects. In this review, we discuss physiological and molecular insights and effects in basic plant metabolism, drought tolerance strategies under drought conditions in higher plants for sustainable agriculture and ecoenvironments in arid and semiarid areas of the world. We conclude that biological measures are the bases for the solutions to the issues relating to the different types of sustainable development.
Collapse
Affiliation(s)
- Hong-Bo Shao
- Institute of Soil and Water Conservation, Chinese Academy of Science, Northwest A&F University, Yangling, China.
| | | | | | | | | | | |
Collapse
|
35
|
Effect of sound wave stress on antioxidant enzyme activities and lipid peroxidation of Dendrobium candidum. Colloids Surf B Biointerfaces 2008; 63:269-75. [DOI: 10.1016/j.colsurfb.2007.12.012] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2007] [Revised: 12/09/2007] [Accepted: 12/14/2007] [Indexed: 11/19/2022]
|
36
|
Shao HB, Chu LY, Shao MA, Jaleel CA, Mi HM. Higher plant antioxidants and redox signaling under environmental stresses. C R Biol 2008; 331:433-41. [PMID: 18510996 DOI: 10.1016/j.crvi.2008.03.011] [Citation(s) in RCA: 117] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2008] [Revised: 03/26/2008] [Accepted: 03/31/2008] [Indexed: 01/13/2023]
Abstract
Main antioxidants in higher plants include glutathione, ascorbate, tocopherol, proline, betaine, and others, which are also information-rich redox buffers and important redox signaling components that interact with biomembrane-related compartments. As an evolutionary consequence of aerobic life for higher plants, reactive oxygen species (ROS) are formed by partial reduction of molecular oxygen. The above enzymatic and non-enzymatic antioxidants in higher plants can protect their cells from oxidative damage by scavenging ROS. In addition to crucial roles in defense system and as enzyme cofactors, antioxidants influence higher plant growth and development by modifying processes from mitosis and cell elongation to senescence and death. Most importantly, they provide essential information on cellular redox state, and regulate gene expression associated with biotic and abiotic stress responses to optimize defense and survival. An overview of the literature is presented in terms of main antioxidants and redox signaling in plant cells. Special attention is given to ROS and ROS-antioxidant interaction as a metabolic interface for different types of signals derived from metabolism and from the changing environment, which regulates the appropriate induction of acclimation processes or, execution of cell death programs, which are the two essential directions for higher plants.
Collapse
Affiliation(s)
- Hong-bo Shao
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences, Northwest A&F University, Yangling, China.
| | | | | | | | | |
Collapse
|
37
|
The responding relationship between plants and environment is the essential principle for agricultural sustainable development on the globe. C R Biol 2008; 331:321-8. [PMID: 18355755 DOI: 10.1016/j.crvi.2008.01.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2007] [Revised: 01/10/2008] [Accepted: 01/17/2008] [Indexed: 01/31/2023]
Abstract
The mutual-responding relationship between plants and environment is involved in all life processes, which are the essential bases for different types of sustainable development on the globe, particularly the critical basis for agricultural sustainable development. How to regulate the above relationship between plants and the corresponding environment (in particular soil environment) is the key problem to modern sustainable agriculture development under global climate change, which is one of the hot topics in the field of plant biology. Detailed dissection of this responding relationship is also important for conducting global eco-environmental restoration and construction. Although powerful methodology and dataset related to genomics, post-genomics, and metabolomics have provided some insights into this relationship, crop physiological measures are also critical for crop full performance in field. With the increase of tested plants (including model plants) and development of integrated molecular biology, a complete understanding of the relationship at different scales under biotic and abiotic stresses will be accelerated. In the current paper, we will cover some important aspects in combination with the recent work from our laboratory and related advances reflected by international academic journals, as follows: plant physiological function performance under natural condition, plant gene regulatory network system under abiotic stresses, gene regulatory network system and drought resistance improvement, summary of the related work from our laboratory, conclusions, and acknowledgement.
Collapse
|
38
|
Shao HB, Chu LY, Jaleel CA, Zhao CX. Water-deficit stress-induced anatomical changes in higher plants. C R Biol 2008; 331:215-25. [PMID: 18280987 DOI: 10.1016/j.crvi.2008.01.002] [Citation(s) in RCA: 184] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2007] [Accepted: 01/06/2008] [Indexed: 11/17/2022]
Abstract
Water is vital for plant growth and development. Water-deficit stress, permanent or temporary, limits the growth and the distribution of natural vegetation and the performance of cultivated plants more than any other environmental factors do. Although research and practices aimed at improving water-stress resistance and water-use efficiency have been carried out for many years, the mechanism involved is still not clear. Further understanding and manipulating plant-water relations and water-stress tolerance at the scale of physiology and molecular biology can significantly improve plant productivity and environmental quality. Currently, post-genomics and metabolomics are very important to explore anti-drought gene resource in different life forms, but modern agricultural sustainable development must be combined with plant physiological measures in the field, on the basis of which post-genomics and metabolomics will have further a practical prospect. In this review, we discussed the anatomical changes and drought-tolerance strategies under drought condition in higher plants.
Collapse
|
39
|
Shao HB, Chu LY, Lu ZH, Kang CM. Primary antioxidant free radical scavenging and redox signaling pathways in higher plant cells. Int J Biol Sci 2007; 4:8-14. [PMID: 18167531 PMCID: PMC2140154 DOI: 10.7150/ijbs.4.8] [Citation(s) in RCA: 173] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2007] [Accepted: 12/04/2007] [Indexed: 12/17/2022] Open
Abstract
Antioxidants in plant cells mainly include glutathione, ascorbate, tocopherol, proline, betaine and others, which are also information-rich redox buffers and important redox signaling components that interact with cellular compartments. As an unfortunate consequence of aerobic life for higher plants, reactive oxygen species (ROS) are formed by partial reduction of molecular oxygen. The above enzymatic and non-enzymatic antioxidants in higher plant cells can protect their cells from oxidative damage by scavenging ROS. In addition to crucial roles in defense system and as enzyme cofactors, antioxidants influence higher plant growth and development by modifying processes from miotosis and cell elongation to senescence and death. Most importantly, they provide essential information on cellular redox state, and regulate gene expression associated with biotic and abiotic stress responses to optimize defense and survival. An overview of the literature is presented in terms of primary antioxidant free radical scavenging and redox signaling in plant cells. Special attention is given to ROS and ROS-anioxidant interaction as a metabolic interface for different types of signals derived from metabolisms and from the changing environment. This interaction regulates the appropriate induction of acclimation processes or execution of cell death programs, which are the two essential directions for higher plant cells.
Collapse
|
40
|
Sankar B, Jaleel CA, Manivannan P, Kishorekumar A, Somasundaram R, Panneerselvam R. Effect of paclobutrazol on water stress amelioration through antioxidants and free radical scavenging enzymes in Arachis hypogaea L. Colloids Surf B Biointerfaces 2007; 60:229-35. [PMID: 17764913 DOI: 10.1016/j.colsurfb.2007.06.016] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2007] [Revised: 06/13/2007] [Accepted: 06/17/2007] [Indexed: 10/23/2022]
Abstract
An investigation was carried out to find out the extent of changes occurred in groundnut (Arachis hypogaea L.) cultivars in response to paclobutrazol (PBZ) treatment under water deficit stress. Two groundnut cultivars namely ICG 221 and ICG 476 were used for the study. Individual treatment with PBZ and drought stress showed an increase in ascorbic acid, alpha-tocopherol and reduced glutathione, superoxide dismutase (SOD), ascorbate peroxidase (APX) and catalase (CAT) activities. PBZ with drought stressed plants maintained higher levels of antioxidant and scavenging enzymes. Significant differences were observed between cultivars and treatments. These results suggests that the adverse effects of water stress can be minimized by the application of PBZ by increasing the antioxidant levels and activities of scavenging enzymes such as SOD, APX and CAT. The Cv. ICG 221 appears to be more tolerant to water stress than the ICG 476.
Collapse
Affiliation(s)
- B Sankar
- Stress Physiology Lab, Department of Botany, Annamalai University, Annamalainagar 608 002, Tamilnadu, India
| | | | | | | | | | | |
Collapse
|
41
|
Jaleel CA, Manivannan P, Sankar B, Kishorekumar A, Gopi R, Somasundaram R, Panneerselvam R. Pseudomonas fluorescens enhances biomass yield and ajmalicine production in Catharanthus roseus under water deficit stress. Colloids Surf B Biointerfaces 2007; 60:7-11. [PMID: 17681765 DOI: 10.1016/j.colsurfb.2007.05.012] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2007] [Revised: 05/15/2007] [Accepted: 05/20/2007] [Indexed: 10/23/2022]
Abstract
The effect of plant growth promoting rhizobacteria (PGPR) like Pseudomonas fluorescens on growth parameters and the production of ajmalicine were investigated in Catharanthus roseus under drought stress. The plants under pot culture were subjected to 10, 15 and 20 days interval drought (DID) stress and drought stress with Pseudomonas fluorescens at 1mgl(-1) and 1mgl(-1)Pseudomonas fluorescens alone from 30 days after planting (DAP) and regular irrigation was kept as control. The plants were uprooted on 41 DAS (10 DID), 46 DAS (15 DID) and 51 DAS (20 DID). Drought stress decreased the growth parameters and increased the ajmalicine content. But the treatment with Pseudomonas fluorescens enhanced the growth parameters under drought stress and partially ameliorated the drought induced growth inhibition by increasing the fresh and dry weights significantly. The ajmalicine content was again increased due to Pseudomonas fluorescens treatment to the drought stressed plants. From the results of this investigation, it can be concluded that, the seedling treatments of native PGPRs can be used as a good tool in the enhancement of biomass yield and alkaloid contents in medicinal plants, as it provides an eco-friendly approach and can be used as an agent in water deficit stress amelioration.
Collapse
Affiliation(s)
- C Abdul Jaleel
- Stress Physiology Lab, Department of Botany, Annamalai University, Annamalainagar 608 002, Tamilnadu, India.
| | | | | | | | | | | | | |
Collapse
|
42
|
Jaleel CA, Manivannan P, Sankar B, Kishorekumar A, Gopi R, Somasundaram R, Panneerselvam R. Water deficit stress mitigation by calcium chloride in Catharanthus roseus: Effects on oxidative stress, proline metabolism and indole alkaloid accumulation. Colloids Surf B Biointerfaces 2007; 60:110-6. [PMID: 17643271 DOI: 10.1016/j.colsurfb.2007.06.006] [Citation(s) in RCA: 130] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2007] [Revised: 05/30/2007] [Accepted: 06/04/2007] [Indexed: 11/23/2022]
Abstract
The present investigation was conducted to determine whether CaCl(2) increases Catharanthus roseus drought tolerance and if such tolerance is correlated with changes in oxidative stress, osmoregulation and indole alkaloid accumulation. C. roseus plants were grown under water deficit environments with or without CaCl(2). Drought induced oxidative stress was measured in terms of lipid peroxidation (LPO) and H(2)O(2) contents, osmolyte concentration, proline (PRO) metabolizing enzymes and indole alkaloid accumulation. The plants under pot culture were subjected to 10, 15 and 20 days interval drought (DID) stress and drought stress with 5mM CaCl(2) and 5mM CaCl(2) alone from 30 days after planting (DAP) and regular irrigation was kept as control. The plants were uprooted on 41 DAS (10 DID), 46 DAS (15 DID) and 51 DAS (20 DID). Drought stressed plants showed increased LPO, H(2)O(2), glycine betaine (GB) and PRO contents and decreased proline oxidase (PROX) activity and increased gamma-glutamyl kinase (gamma-GK) activity when compared to control. Addition of CaCl(2) to drought stressed plants lowered the PRO concentration by increasing the level of PROX and decreasing the gamma-GK activities. Calcium ions increased the GB contents. CaCl(2) appears to confer greater osmoprotection by the additive role with drought in GB accumulation. The drought with CaCl(2)-treated C. roseus plants showed an increase in total indole alkaloid content in shoots and roots when compared to drought stressed and well-watered plants.
Collapse
Affiliation(s)
- C Abdul Jaleel
- Stress Physiology Lab, Department of Botany, Annamalai University, Annamalainagar 608002, Tamil Nadu, India.
| | | | | | | | | | | | | |
Collapse
|
43
|
Gang W, Zhen-Kuan W, Yong-Xiang W, Li-Ye C, Hong-Bo S. The mutual responses of higher plants to environment: physiological and microbiological aspects. Colloids Surf B Biointerfaces 2007; 59:113-9. [PMID: 17566717 DOI: 10.1016/j.colsurfb.2007.05.003] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2007] [Revised: 05/02/2007] [Accepted: 05/03/2007] [Indexed: 11/22/2022]
Abstract
Higher plants are different from animals in many aspects, but the important difference may be that plants are more easily influenced by environment. Plants have a series of fine mechanisms for responding to environmental changes, which has been established during their long-period evolution and artificial domestication. The relationship between higher plants and environment is influenced mutually. The component in environment provides higher plants with nutrients for shaping themselves and higher plants simultaneously bring photosynthetic products and metabolites to surroundings, which is the most important part of natural circle. Photosynthetic products are realized mainly by physiological mechanisms, and microbiological aspects in environment (for instance, soil environment) impact the above processes greatly. The complete understanding of the relationship will extremely promote the sustainable utilization of plant resources and make the best use of its current potential under different scales.
Collapse
Affiliation(s)
- Wu Gang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | | | | | | | | |
Collapse
|