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Khajeeyan R, Salehi A, Movahhedi Dehnavi M, Hamidian M, Hazrati S. Evaluation of the benefits of plant growth-promoting rhizobacteria and mycorrhizal fungi on biochemical and morphophysiological traits of Aloe barbadensis Mill under water deficit stress. Sci Rep 2024; 14:14480. [PMID: 38914637 PMCID: PMC11196654 DOI: 10.1038/s41598-024-64878-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 06/13/2024] [Indexed: 06/26/2024] Open
Abstract
Aloe barbadensis is a drought-tolerant perennial medicinal plant with both nutritional and cosmetic uses. Drought is one of the main abiotic stresses limiting plant growth and development. However, the use of drought-resistant plants combined with beneficial soil micro-organisms could improve the effectiveness of biological methods to mitigate drought damage. This research aims to evaluate the effects of Funneliformis mosseae (MF), plant growth-promoting rhizobacteria (PGPR) (including Pseudomonas putida and Pantoea agglomerans), and their co-inoculation on the macronutrient status, antioxidant enzyme activities, and other morphophysiological traits of A. barbadensis under four irrigation regimes [25%, 50%, 75% and 100% of water requirement (WR)]. Three harvests were conducted, revealing that inoculation enhanced the survival rate and shoot fresh weight (SFW) compared to the control plants. However, at 25% WR, the SFW was reduced by 43% more than the control. across all harvests, while the PGPR + MF treatment showed increases of more than 19%, 11%, and 17% compared to the control, MF, and PGPR treatments, respectively. The results also showed that A. barbadensis exhibited innate drought tolerance up to a 50% WR level by enhancing physiological defenses, such as antioxidant enzyme activity. Inoculation increased the macronutrient status of the plant at all levels of irrigation regimes especially under severe drought conditions. The highest levels of nitrogen (N) (16.24 mg g-1 DW) and phosphorus (P) (11.29 mg g-1 DW) were observed in the PGPR + MF treatment at 100% WR. The maximum relative water content under MF inoculation and 75% WR (98.24%) (98.24%) was reached. PGPR + MF treatment alleviated drought-induced osmotic stress, as indicated by reduced antioxidant enzyme activities and electrolyte leakage. However, P. putida and P. agglomerans strains alone or in combination with F. mosseae increased plant yield, macronutrient uptake and antioxidant enzyme activity. This study underscores the potential of these PGPR and MF strains as invaluable biological tools for the cultivation of A. barbadensis in regions with severe drought stress.
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Affiliation(s)
- Rahil Khajeeyan
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University, Yasouj, Iran
| | - Amin Salehi
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University, Yasouj, Iran.
| | - Mohsen Movahhedi Dehnavi
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University, Yasouj, Iran
| | - Mohammad Hamidian
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University, Yasouj, Iran
| | - Saeid Hazrati
- Department of Agronomy, Faculty of Agriculture, Azarbaijan Shahid Madani University, Tabriz, Iran
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Hamidian M, Movahhedi-Dehnavi M, Sayyed RZ, Almalki WH, Gafur A, Fazeli-Nasab B. Co-inoculation of Mycorrhiza and methyl jasmonate regulates morpho-physiological and antioxidant responses of Crocus sativus (Saffron) under salinity stress conditions. Sci Rep 2023; 13:7378. [PMID: 37149662 PMCID: PMC10164175 DOI: 10.1038/s41598-023-34359-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 04/28/2023] [Indexed: 05/08/2023] Open
Abstract
Salinity stress is the second most devastating abiotic factor limiting plant growth and yields. Climate changes have significantly increased salinity levels of soil. Besides improving the physiological responses under stress conditions, jasmonates modulate Mycorrhiza-Plant relationships. The present study aimed to evaluate the effects of methyl jasmonate (MeJ) and Funneliformis mosseae (Arbuscular mycorrhizal (AM) on morphology and improving antioxidant mechanisms in Crocus sativus L. under salinity stress. After inoculation with AM, pre-treated C. sativus corms with MeJ were grown under low, moderate, and severe salinity stress. Intense salinity levels damaged the corm, root, total leaf dry weight, and area. Salinities up to 50 mM increased Proline content and Polyphenol oxidase (PPO) activity, but MeJ increased this trend in proline. Generally, MeJ increased anthocyanins, total soluble sugars, and PPO. Total chlorophyll and superoxide dismutase (SOD) activity increased by salinity. The maximum catalase and SOD activities in + MeJ + AM were 50 and 125 mM, respectively, and the maximum total chlorophyll in -MeJ + AM treatment was 75 mM. Although 20 and 50 mM increased plant growth, using mycorrhiza and jasmonate enhanced this trend. Moreover, these treatments reduced the damage of 75 and 100 mM salinity stress. Using MeJ and AM can improve the growth of saffron under various ranges of salinity stress levels; however, in severe levels like 120 mM, this phytohormone and F. mosseae effects on saffron could be adverse.
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Affiliation(s)
- Mohammad Hamidian
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University, Yasouj, Iran
| | - Mohsen Movahhedi-Dehnavi
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University, Yasouj, Iran.
| | - R Z Sayyed
- Department of Microbiology, PSGVP Mandal's S I Patil Arts, G B Patel Science and STKV Sangh Commerce College, Shahada, 425409, India.
| | - Waleed Hassan Almalki
- Department of Pharmacology, College of Pharmacy, Umm Al-Qura University, Makkah, 24382, Saudi Arabia
| | - Abdul Gafur
- Sinarmas Forestry Corporate Research and Development, Perawang, Indonesia
| | - Bahman Fazeli-Nasab
- Department of Agronomy and Plant Breeding, Agriculture Institute, Research Institute of Zabol, Zabol, Iran
- Plant Biotechnology and Breeding Department, College of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
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3
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Deshi V, Homa F, Ghatak A, Aftab MA, Mir H, Ozturk B, Siddiqui MW. Exogenous methyl jasmonate modulates antioxidant activities and delays pericarp browning in litchi. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2022; 28:1561-1569. [PMID: 36389091 PMCID: PMC9530099 DOI: 10.1007/s12298-022-01230-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/06/2022] [Accepted: 09/14/2022] [Indexed: 05/13/2023]
Abstract
Pericarp browning (PB) is a serious problem in harvested litchi and drastically affects consumer acceptability and marketability. Postharvest PB and subsequent decay in fruit are linked to reactive oxygen species (ROS) accumulation in tissues. Antioxidants neutralize or scavenge ROS and maintain the shelf-life of fruit, especially in non-climacteric ones such as litchi. This work was aimed to assess the effect of vacuum infiltrated methyl jasmonate (MeJA; 1 and 2 mM) on the quality of harvested litchi fruit (cv. Purbi) during ambient storage (28 °C, RH 70-75%). The exogenous MeJA infiltration (2 mM) significantly retained quality attributes of litchi fruit as evident by lowered PB, weight loss, disease occurrence, quinone, and ROS (H2O2 and O2 -) accumulation. Moreover, MeJA infiltrated fruit suppressed the activity of polyphenol oxidase and peroxidase resulting in higher anthocyanin, phenolics, antioxidant potential, phenylalanine ammonia lyase activity as well as membrane integrity throughout the storage. Control fruit showed an early quality deterioration marked by prominent PB and other biochemical degradative changes. Thus, exogenous MeJA infiltration (2 mM) could be suggested to increase the shelf life of litchi by four days under ambient conditions.
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Affiliation(s)
- Vinayak Deshi
- Department of Food Science and Postharvest Technology, Bihar Agricultural University, Sabour, Bhagalpur, 813210 India
| | - Fozia Homa
- Department of Statistics, Mathematics, and Computer Application, Bihar Agricultural University, Sabour, Bhagalpur, 813210 India
| | - Abhijeet Ghatak
- Department of Plant Pathology, Bihar Agricultural University, Sabour, Bhagalpur, 813210 India
| | - M. A. Aftab
- Department of Food Science and Postharvest Technology, Bihar Agricultural University, Sabour, Bhagalpur, 813210 India
| | - Hidayatullah Mir
- Department of Horticulture, Bihar Agricultural University, Sabour, Bhagalpur, 813210 India
| | - Burhan Ozturk
- Department of Horticulture, Faculty of Agriculture, Ordu University, Ordu, Turkey
| | - Mohammed Wasim Siddiqui
- Department of Food Science and Postharvest Technology, Bihar Agricultural University, Sabour, Bhagalpur, 813210 India
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FU X, SUN J, LYU C, MENG X, GUO H, YANG D. Evaluation on simulative transportation and storage quality of sweet cherry by different varieties based on principal component analysis. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.30420] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Xiqing FU
- Shenyang Agricultural University, China
| | | | | | | | - He GUO
- Shenyang Agricultural University, China
| | - Dan YANG
- Shenyang Agricultural University, China
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Udayan A, Sabapathy H, Arumugam M. Stress hormones mediated lipid accumulation and modulation of specific fatty acids in Nannochloropsis oceanica CASA CC201. BIORESOURCE TECHNOLOGY 2020; 310:123437. [PMID: 32361202 DOI: 10.1016/j.biortech.2020.123437] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/20/2020] [Accepted: 04/22/2020] [Indexed: 05/05/2023]
Abstract
The aim of this study is to analyze the effect of two plant growth regulators on selective modulation of nutraceutically important fatty acids. Exogenous application of methyl jasmonate (MeJA) promoted microalgal growth compared to control. Treatment with 10 ppm salicylic acid (SA) induced significantly higher lipid production of 475 mg/L (2.2 fold). Interestingly treatment with higher doses of MeJA promoted monounsaturated fatty acid production, particularly oleic acid (C18:1) at early stationary growth phase, while treatment with SA induces essential omega 3 fatty acid production (EPA, C20:5). This significant modification of fatty acid compositions was correlated with the oxidative stress in terms of total reactive oxygen species production and endogenous growth hormone levels. Taken together, the results indicated that treatment with stress associated plant hormones significantly increased high value metabolite accumulation specifically MUFA and PUFA production by modulating stress mechanisms and endogenous growth hormone levels.
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Affiliation(s)
- Aswathy Udayan
- Microbial Processes and Technology Division, National Institute for Interdisciplinary Science and Technology (NIIST), Council of Scientific and Industrial Research (CSIR), Trivandrum, Kerala, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Hariharan Sabapathy
- Microbial Processes and Technology Division, National Institute for Interdisciplinary Science and Technology (NIIST), Council of Scientific and Industrial Research (CSIR), Trivandrum, Kerala, India
| | - Muthu Arumugam
- Microbial Processes and Technology Division, National Institute for Interdisciplinary Science and Technology (NIIST), Council of Scientific and Industrial Research (CSIR), Trivandrum, Kerala, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India.
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Bawa G, Feng L, Shi J, Chen G, Cheng Y, Luo J, Wu W, Ngoke B, Cheng P, Tang Z, Pu T, Liu J, Liu W, Yong T, Du J, Yang W, Wang X. Evidence that melatonin promotes soybean seedlings growth from low-temperature stress by mediating plant mineral elements and genes involved in the antioxidant pathway. FUNCTIONAL PLANT BIOLOGY : FPB 2020; 47:815-824. [PMID: 32553087 DOI: 10.1071/fp19358] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 04/03/2020] [Indexed: 05/14/2023]
Abstract
Melatonin (MT) regulates several physiological activities in plants. However, information on how MT regulates soybean growth under low-temperature (LT) stress is lacking. To better understand how MT promotes plant growth and development under LT stress, we designed this study to evaluate the role of MT pretreatment on soybean seedlings exposed to LT stress. Our results showed that LT stress increased oxidative damage by increasing reactive oxygen species (ROS) accumulation, which affected the growth and development of soybean seedlings. However, the application of 5 µmol L-1 MT significantly decreased the oxidative damage by increasing plant mineral element concentrations and the transcript abundance of antioxidant related genes, which enhanced the decrease in ROS accumulation. These results collectively suggest the involvement of MT in improving LT stress tolerance of soybean seedlings by mediating plant mineral elements and the expression of genes involved in the antioxidant pathway.
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Affiliation(s)
- George Bawa
- Sichuan Engineering Research Centre for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu 611130, China; and Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu 611130, China; and College of Agronomy, Sichuan Agricultural University, 211-Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Lingyang Feng
- Sichuan Engineering Research Centre for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu 611130, China; and Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu 611130, China; and College of Agronomy, Sichuan Agricultural University, 211-Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Jianyi Shi
- Sichuan Engineering Research Centre for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu 611130, China; and Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu 611130, China; and College of Agronomy, Sichuan Agricultural University, 211-Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Guopeng Chen
- Sichuan Engineering Research Centre for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu 611130, China; and Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu 611130, China; and College of Agronomy, Sichuan Agricultural University, 211-Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Yajiao Cheng
- Sichuan Engineering Research Centre for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu 611130, China; and Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu 611130, China; and College of Agronomy, Sichuan Agricultural University, 211-Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Jie Luo
- College of Veterinary Medicine, Sichuan Agricultural University, 211-Huimin Road, Wenjiang District,Chengdu 611130, China
| | - Weishu Wu
- College of Veterinary Medicine, Sichuan Agricultural University, 211-Huimin Road, Wenjiang District,Chengdu 611130, China
| | - Bancy Ngoke
- College of Veterinary Medicine, Sichuan Agricultural University, 211-Huimin Road, Wenjiang District,Chengdu 611130, China
| | - Ping Cheng
- Sichuan Engineering Research Centre for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu 611130, China; and Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu 611130, China; and College of Agronomy, Sichuan Agricultural University, 211-Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Zhongqin Tang
- Sichuan Engineering Research Centre for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu 611130, China; and Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu 611130, China; and College of Agronomy, Sichuan Agricultural University, 211-Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Tian Pu
- Sichuan Engineering Research Centre for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu 611130, China; and Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu 611130, China; and College of Agronomy, Sichuan Agricultural University, 211-Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Jiang Liu
- Sichuan Engineering Research Centre for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu 611130, China; and Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu 611130, China; and College of Agronomy, Sichuan Agricultural University, 211-Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Weiguo Liu
- Sichuan Engineering Research Centre for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu 611130, China; and Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu 611130, China; and College of Agronomy, Sichuan Agricultural University, 211-Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Taiwen Yong
- Sichuan Engineering Research Centre for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu 611130, China; and Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu 611130, China; and College of Agronomy, Sichuan Agricultural University, 211-Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Junbo Du
- Sichuan Engineering Research Centre for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu 611130, China; and Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu 611130, China; and College of Agronomy, Sichuan Agricultural University, 211-Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Wenyu Yang
- Sichuan Engineering Research Centre for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu 611130, China; and Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu 611130, China; and College of Agronomy, Sichuan Agricultural University, 211-Huimin Road, Wenjiang District, Chengdu 611130, China
| | - Xiaochun Wang
- Sichuan Engineering Research Centre for Crop Strip Intercropping System, Sichuan Agricultural University, Chengdu 611130, China; and Key Laboratory of Crop Ecophysiology and Farming System in Southwest China (Ministry of Agriculture), Sichuan Agricultural University, Chengdu 611130, China; and College of Agronomy, Sichuan Agricultural University, 211-Huimin Road, Wenjiang District, Chengdu 611130, China; and Corresponding author.
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7
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Hezavehei M, Kouchesfahani HM, Shahverdi A, Sharafi M, Salekdeh GH, Eftekhari-Yazdi P. Preconditioning of sperm with sublethal nitrosative stress: a novel approach to improve frozen–thawed sperm function. Reprod Biomed Online 2019; 38:413-425. [DOI: 10.1016/j.rbmo.2018.11.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 11/22/2018] [Accepted: 11/22/2018] [Indexed: 11/26/2022]
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8
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Ederli L, Bianchet C, Paolocci F, Alqurashi M, Gehring C, Pasqualini S. Drought stress induces a biphasic NO accumulation in Arabidopsis thaliana. PLANT SIGNALING & BEHAVIOR 2019; 14:e1573098. [PMID: 30727813 PMCID: PMC6422377 DOI: 10.1080/15592324.2019.1573098] [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: 11/30/2018] [Revised: 01/10/2019] [Accepted: 01/15/2019] [Indexed: 06/09/2023]
Abstract
We have recently reported the proteomic signature of the early (≤30 min) drought stress responses in Arabidopsis thaliana suspension cells challenged with PEG. We found an over-representation in the gene ontology categories "Ribosome" and "Oxidative stress along with an increased abundance of late embryogenesis abundant (LEA) and early response to dehydration (ERD) proteins. Since nitric oxide (NO) plays a pivotal role in plant responses to drought stress and induces LEA and DREB proteins, here we monitored the levels of NO in Arabidopsis cell suspensions and leaf disks challenged with PEG, and performed comparative analyses of the proteomics and transcriptomics data in public domain to search for a common set of early drought and NO responsive proteins. We show that under drought-stress, NO shows a biphasic time course, much like in response to ozone stress and that among the early drought and NO responsive proteins, the categories "DNA binding", "Nucleotide binding" and "Transcription regulator activity" are enriched. Taken together, present study suggests that in Arabidopsis the changing NO levels may play a critical role in early drought responsive processes and notably in the transcriptional and translational reprograming observed under drought stress.
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Affiliation(s)
- Luisa Ederli
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - Chantal Bianchet
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | | | - May Alqurashi
- Department of Biochemistry, Cambridge Centre for Proteomics, Cambridge System Biology Centre, University of Cambridge, Cambridge, UK
- Biological and Environmental Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
| | - Chris Gehring
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
| | - Stefania Pasqualini
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy
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9
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Enhancement of storability and antioxidant systems of sweet cherry fruit by nitric oxide-releasing chitosan nanoparticles (GSNO-CS NPs). Food Chem 2019; 285:10-21. [PMID: 30797323 DOI: 10.1016/j.foodchem.2019.01.156] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 01/22/2019] [Accepted: 01/22/2019] [Indexed: 01/11/2023]
Abstract
Sweet cherries rapidly depreciate in market value owing to decay and the quick loss of fruit quality after harvest. Therefore, optimum postharvest treatment is crucial for maintaining the qualities of cherries during storage. Here, we tested a new method of postharvest treatment by immersing sweet cherries in nitric oxide-releasing chitosan nanoparticles (GSNO-CS NPs), storing them at 0 °C and evaluating fruit quality over time. The results indicated that GSNO-CS NPs more effectively preserved the quality of cherries during cold storage compared to other methods. Specifically, GSNO-CS NPs reduced fruit weight loss, respiration rate and ethylene production and increased soluble solids content. Additionally, GSNO-CS NPs reduced reactive oxygen species, increased the antioxidant enzyme activity in direct and indirect antioxidant systems, and increased the levels of ascorbic acid and reduced glutathione. Overall, results suggest that treatment with GSNO-CS NPs can effectively preserve the quality of cherries and enhance antioxidant capacity during cold storage.
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Silveira NM, Marcos FCC, Frungillo L, Moura BB, Seabra AB, Salgado I, Machado EC, Hancock JT, Ribeiro RV. S-nitrosoglutathione spraying improves stomatal conductance, Rubisco activity and antioxidant defense in both leaves and roots of sugarcane plants under water deficit. PHYSIOLOGIA PLANTARUM 2017; 160:383-395. [PMID: 28417466 DOI: 10.1111/ppl.12575] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 02/10/2017] [Accepted: 02/23/2017] [Indexed: 05/08/2023]
Abstract
Water deficit is a major environmental constraint on crop productivity and performance and nitric oxide (NO) is an important signaling molecule associated with many biochemical and physiological processes in plants under stressful conditions. This study aims to test the hypothesis that leaf spraying of S-nitrosoglutathione (GSNO), an NO donor, improves the antioxidant defense in both roots and leaves of sugarcane plants under water deficit, with positive consequences for photosynthesis. In addition, the roles of key photosynthetic enzymes ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) and phosphoenolpyruvate carboxylase (PEPC) in maintaining CO2 assimilation of GSNO-sprayed plants under water deficit were evaluated. Sugarcane plants were sprayed with water or GSNO 100 μM and subjected to water deficit, by adding polyethylene glycol (PEG-8000) to the nutrient solution. Sugarcane plants supplied with GSNO presented increases in the activity of antioxidant enzymes such as superoxide dismutase in leaves and catalase in roots, indicating higher antioxidant capacity under water deficit. Such adjustments induced by GSNO were sufficient to prevent oxidative damage in both organs and were associated with better leaf water status. As a consequence, GSNO spraying alleviated the negative impact of water deficit on stomatal conductance and photosynthetic rates, with plants also showing increases in Rubisco activity under water deficit.
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Affiliation(s)
- Neidiquele M Silveira
- Laboratory of Plant Physiology "Coaracy M. Franco", Center R&D in Ecophysiology and Biophysics, Agronomic Institute (IAC), Campinas, Brazil
| | - Fernanda C C Marcos
- Department of Plant Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Lucas Frungillo
- School of Biological Sciences, Institute of Molecular Plant Sciences, University of Edinburgh, Edinburgh, UK
| | - Bárbara B Moura
- Department of Plant Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Amedea B Seabra
- Center of Natural and Human Sciences, Federal University of ABC, Santo André, Brazil
| | - Ione Salgado
- Department of Plant Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Eduardo C Machado
- Laboratory of Plant Physiology "Coaracy M. Franco", Center R&D in Ecophysiology and Biophysics, Agronomic Institute (IAC), Campinas, Brazil
| | - John T Hancock
- Centre for Research in Biosciences, University of the West of England (UWE), Bristol, UK
| | - Rafael V Ribeiro
- Department of Plant Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
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11
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Wang Z, Li Q, Wu W, Guo J, Yang Y. Cadmium stress tolerance in wheat seedlings induced by ascorbic acid was mediated by NO signaling pathways. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 135:75-81. [PMID: 27693680 DOI: 10.1016/j.ecoenv.2016.09.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 09/12/2016] [Accepted: 09/18/2016] [Indexed: 06/06/2023]
Abstract
Ascorbic acid (AsA) and nitric oxide (NO) are well known and widespread antioxidants and gaseous molecules that regulate plant tolerance to several stresses. However, the relationship between them in plant response to stress, especially heavy stress, is largely unclear. This study demonstrated that both AsA and NO could enhance the tolerance of wheat seedlings to cadmium stress evidenced by root length change, which resulted from their roles in maintaining the balance in reactive oxygen species (ROS) and reducing the absorption of Cd. Furthermore, exogenous AsA led to a significant increase of NO content and endogenous AsA content in wheat roots, which could be weakened by the NO scavenger c-PTIO. In addition, c-PTIO also inhibits the NO-induced production of endogenous AsA. Although the AsA synthesis inhibitor lycorine significantly inhibited the inductive effect of exogenous AsA on endogenous AsA production, it has little effect on NO content. In addition, we found that the protective effects of NO and AsA on Cd stress were removed by c-PTIO and lycorine. These results indicated that NO accumulation could be necessary for exogenous AsA-induced cadmium tolerance and endogenous AsA production, and the exogenous AsA-induced endogenous AsA production was likely mediated by NO signaling pathways and together they induced the tolerance of wheat to cadmium stress.
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Affiliation(s)
- Zhaofeng Wang
- School of Life Science, Northwest Normal University, Lanzhou 730070, PR China
| | - Qien Li
- Tibetan medical college, Qinghai University, Xining 810016, PR China
| | - Weiguo Wu
- Economic Crops and Beer Material Institute, Gansu Academy of Agricultural Science, Lanzhou 730070, PR China
| | - Jie Guo
- School of Life Science, Northwest Normal University, Lanzhou 730070, PR China
| | - Yingli Yang
- School of Life Science, Northwest Normal University, Lanzhou 730070, PR China.
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Méndez AAE, Pena LB, Benavides MP, Gallego SM. Priming with NO controls redox state and prevents cadmium-induced general up-regulation of methionine sulfoxide reductase gene family in Arabidopsis. Biochimie 2016; 131:128-136. [PMID: 27702579 DOI: 10.1016/j.biochi.2016.09.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 09/28/2016] [Accepted: 09/28/2016] [Indexed: 11/15/2022]
Abstract
In the present study we evaluated the pre-treatment (priming) of Arabidopsis thaliana plants with sodium nitroprusside (SNP), a NO-donor, as an interesting approach for improving plant tolerance to cadmium stress. We focused on the cell redox balance and on the methionine sulfoxide reductases (MSR) family as a key component of such response. MSR catalyse the reversible oxidation of MetSO residues back to Met. Five MSRA genes and nine MSRB genes have been identified in A. thaliana, coding for proteins with different subcellular locations. After treating 20 days-old A. thaliana (Col 0) plants with 100 μM CdCl2, increased protein carbonylation in leaf tissue, lower chlorophyll content and higher levels of reactive oxygen species (ROS) in chloroplasts were detected, together with increased accumulation of all MSR transcripts evaluated. Further analysis showed reduction in guaiacol peroxidase activity (GPX) and increased catalase (CAT) activity, with no effect on ascorbate peroxidase (APX) activity. Pre-exposition of plants to 100 μM SNP before cadmium treatment restored redox balance; this seems to be linked to a better performance of antioxidant defenses. Our results indicate that NO priming may be acting as a modulator of plant antioxidant system by interfering in oxidative responses and by preventing up-regulation of MSR genes caused by metal exposure.
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Affiliation(s)
- Andrea A E Méndez
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Química Biológica, Junín 956, Buenos Aires, C1113AA, Argentina; IQUIFIB-CONICET, Argentina
| | - Liliana B Pena
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Química Biológica, Junín 956, Buenos Aires, C1113AA, Argentina; IQUIFIB-CONICET, Argentina
| | - María P Benavides
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Química Biológica, Junín 956, Buenos Aires, C1113AA, Argentina; IQUIFIB-CONICET, Argentina
| | - Susana M Gallego
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Departamento de Química Biológica, Junín 956, Buenos Aires, C1113AA, Argentina; IQUIFIB-CONICET, Argentina.
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13
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Li Y, Gao L, Han R. Endogenous nitric oxide mediates He-Ne laser-induced adaptive responses in salt stressed-tall fescue leaves. Biosci Biotechnol Biochem 2016; 80:1887-97. [PMID: 27309569 DOI: 10.1080/09168451.2016.1179091] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The aim of this study was to investigate the role of endogenous nitric oxide in protective effects of He-Ne laser on salt stressed-tall fescue leaves. Salt stress resulted in significant increases of membrane injury, reactive oxygen species (ROS) production, polyamine accumulation, and activities of SOD, POD, and APX, while pronounced decreases of antioxidant contents, CAT activity and intracellular Ca(2+) concentration in seedlings leaves. He-Ne laser illumination caused a distinct alleviation of cellular injury that was reflected by the lower MDA amounts, polyamine accumulation and ROS levels at the stress period. In contrast, the laser treatment displayed a higher Ca(2+) concentration, antioxidant amounts, NO release, antioxidant enzyme, and NOS activities. These responses could be blocked due to the inhibition of NO biosynthesis by PTIO (NO scavenger) or LNNA (NOS inhibitor). The presented results demonstrated that endogenous NO might be involved in the progress of He-Ne laser-induced plant antioxidant system activation and ROS degradation in order to enhance adaptive responses of tall fescue to prolonged saline conditions.
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Affiliation(s)
- Yongfeng Li
- a Higher Education Key Laboratory of Plant Molecular and Environmental Stress Response , Shanxi Normal University , Linfen , PR China.,b Analysis and Testing Center , Shanxi Normal University , Linfen , PR China
| | - Limei Gao
- a Higher Education Key Laboratory of Plant Molecular and Environmental Stress Response , Shanxi Normal University , Linfen , PR China.,c College of Life Science , Shanxi Normal University , Linfen , PR China
| | - Rong Han
- a Higher Education Key Laboratory of Plant Molecular and Environmental Stress Response , Shanxi Normal University , Linfen , PR China.,c College of Life Science , Shanxi Normal University , Linfen , PR China
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Gao L, Li Y, Han R. Cell wall reconstruction and DNA damage repair play a key role in the improved salt tolerance effects of He-Ne laser irradiation in tall fescue seedlings. Biosci Biotechnol Biochem 2016; 80:682-93. [DOI: 10.1080/09168451.2015.1101335] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Abstract
The improved salt tolerance effects of He–Ne laser were further studied through the estimation of ROS levels, cell viability, DNA damage phenomena, physicochemical properties, and monosaccharide compositions of cell wall polysaccharides in tall fescue seedlings. Salt stress produced deleterious effects on seedlings growth and development. ROS levels and genomic DNA damage were markedly increased compared with controls. Physicochemical activities and monosaccharide proportions of cell wall polysaccharide were also pronouncedly altered. He–Ne laser irradiation improved plant growth retardation via increasing cell viability and reverting physicochemical parameters. According to the results of Fourier transform infrared (FTIR) scanning spectra and DNA apopladder analysis, He–Ne laser was showed to efficiently ameliorate cell wall polysaccharide damage and DNA fragmentation phenomena. The treatment with DNA synthesis inhibitor further demonstrated that DNA damage repair was correlated with the improvement effects of the laser. Therefore, our data illustrated that He–Ne laser irradiation resulted in cell wall reconstruction and genomic DNA injury repair in vivo in salt-stressed seedlings, then enhanced salt tolerance probably via interactions between plant cell wall and related resistance gene expression pattern.
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Affiliation(s)
- Limei Gao
- College of Life Science, Shanxi Normal University, Linfen, P. R. China
- Higher Education Key Laboratory of Plant Molecular and Environmental Stress Response, Shanxi Normal University, Linfen, P. R. China
| | - Yongfeng Li
- Higher Education Key Laboratory of Plant Molecular and Environmental Stress Response, Shanxi Normal University, Linfen, P. R. China
- Analysis and Testing Center, Shanxi Normal University, Linfen, P. R. China
| | - Rong Han
- College of Life Science, Shanxi Normal University, Linfen, P. R. China
- Higher Education Key Laboratory of Plant Molecular and Environmental Stress Response, Shanxi Normal University, Linfen, P. R. China
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15
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Mutlu S, Ilhan V, Turkoglu HI. Mistletoe (Viscum album) infestation in the Scots pine stimulates drought-dependent oxidative damage in summer. TREE PHYSIOLOGY 2016; 36:479-489. [PMID: 26834188 DOI: 10.1093/treephys/tpv135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Accepted: 11/29/2015] [Indexed: 06/05/2023]
Abstract
This study sought to contribute to the understanding of the detrimental effect of the mistletoe (Viscum albumL.), a hemiparasitic plant, on the mortality of the Scots pine (Pinus sylvestrisL.). Fieldwork was conducted in the town of Kelkit (Gumushane province, Turkey) from April to October in 2013. Pine needles of similar ages were removed from the branches of mistletoe-infested and noninfested Scots pine plants, then transported to the laboratory and used as research materials. The effects of the mistletoe on the Scots pine during infestation were evaluated by determining the levels of water, electrolyte leakage (EL), malondialdehyde (MDA, being a product of lipid peroxidation) and reactive oxygen species (ROS) such as superoxide anion (O2 (-•)), hydrogen peroxide (H2O2) and hydroxyl radical ((•)OH). In addition, the activities of antioxidative enzymes such as superoxide dismutase (SOD), catalase (CAT) and peroxidase (POX) were measured in the same samples. The highest level of drought stress was found in summer (especially in August) as a result of the lowest water content in the soil and the highest average temperature occurring in these months. The drought stress induced by mistletoe infestation caused a regular decrease in water content, while it increased the levels of EL, MDA and ROS (H2O2, O2 (-•)and(•)OH). The infestation also stimulated the activities of CAT and POX, with the exception of SOD. On the other hand, in August, when the drought conditions were the harshest, the levels of EL and MDA, which are two of the most important indicator parameters for oxidative stress, as well as the levels of H2O2and(•)OH, which are two of the ROS leading to oxidative stress, reached the highest values in both infested and noninfested needles, whereas the O2 (-•)level decreased. For the same period and needles, CAT activity increased, while SOD activity decreased. Peroxidase activity, however, did not exhibit a significant change. Our findings indicate that the increased mortality of the Scots pine may result from the mistletoe-induced very severe drought stress, and that the increase in the capacity of antioxidative enzyme system does not protect the plant against oxidative stress in dry summer seasons.
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Affiliation(s)
- Salih Mutlu
- Department of Biology, Science and Art Faculty, Erzincan University, 24150 Erzincan, Turkey
| | - Veli Ilhan
- Department of Biology, Science and Art Faculty, Erzincan University, 24150 Erzincan, Turkey
| | - Halil Ibrahim Turkoglu
- Department of Biology, Science and Art Faculty, Erzincan University, 24150 Erzincan, Turkey
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Jiang Z, Zheng Y, Qiu R, Yang Y, Xu M, Ye Y, Xu M. Short UV-B Exposure Stimulated Enzymatic and Nonenzymatic Antioxidants and Reduced Oxidative Stress of Cold-Stored Mangoes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:10965-10972. [PMID: 26641945 DOI: 10.1021/acs.jafc.5b04460] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The effects of UV-B irradiation on reactive oxygen species (ROS) levels, antioxidant compound contents, antioxidative enzyme activities, and oxidative damage of cold-stored mangoes were examined. Superoxide anion production rate, hydrogen peroxide concentration, ion leakage level and malondialdehyde content of the cold-stored fruit preradiated with 5 KJ m(-2) UV-B for 4 h were significantly decreased as compared with control fruit. The activities of ROS generating enzymes remained unchanged in UV-B-irradiated mangoes as compared to the control, but superoxide dismutase and catalase activities, ascorbate and polyphenol contents and antioxidant capacities of the cold-stored mangoes were significantly enhanced by UV-B. The UV-B-enhanced antioxidant compounds and antioxidative enzymes were highly correlated with the reduced-ROS levels in UV-B-irradiated mangoes. The data indicated that a short UV-B exposure reduced oxidative stress and alleviated oxidative damage of the cold-stored mangoes by triggering both enzymatic and nonenzymatic antioxidant systems although ROS generation in the fruit was not affected.
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Affiliation(s)
- Zhifang Jiang
- Key Laboratory for Quality and Safety of Agricultural Products of Hangzhou City, College of Life and Environmental Sciences and ‡Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medical Plants, College of Life and Environmental Sciences, Hangzhou Normal University , Hangzhou 310036, China
| | - Yaoqi Zheng
- Key Laboratory for Quality and Safety of Agricultural Products of Hangzhou City, College of Life and Environmental Sciences and ‡Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medical Plants, College of Life and Environmental Sciences, Hangzhou Normal University , Hangzhou 310036, China
| | - Rongrong Qiu
- Key Laboratory for Quality and Safety of Agricultural Products of Hangzhou City, College of Life and Environmental Sciences and ‡Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medical Plants, College of Life and Environmental Sciences, Hangzhou Normal University , Hangzhou 310036, China
| | - Yanjun Yang
- Key Laboratory for Quality and Safety of Agricultural Products of Hangzhou City, College of Life and Environmental Sciences and ‡Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medical Plants, College of Life and Environmental Sciences, Hangzhou Normal University , Hangzhou 310036, China
| | - Mingfeng Xu
- Key Laboratory for Quality and Safety of Agricultural Products of Hangzhou City, College of Life and Environmental Sciences and ‡Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medical Plants, College of Life and Environmental Sciences, Hangzhou Normal University , Hangzhou 310036, China
| | - Yu Ye
- Key Laboratory for Quality and Safety of Agricultural Products of Hangzhou City, College of Life and Environmental Sciences and ‡Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medical Plants, College of Life and Environmental Sciences, Hangzhou Normal University , Hangzhou 310036, China
| | - Maojun Xu
- Key Laboratory for Quality and Safety of Agricultural Products of Hangzhou City, College of Life and Environmental Sciences and ‡Zhejiang Provincial Key Laboratory for Genetic Improvement and Quality Control of Medical Plants, College of Life and Environmental Sciences, Hangzhou Normal University , Hangzhou 310036, China
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Fu J, Chu X, Sun Y, Miao Y, Xu Y, Hu T. Nitric Oxide Mediates 5-Aminolevulinic Acid-Induced Antioxidant Defense in Leaves of Elymus nutans Griseb. Exposed to Chilling Stress. PLoS One 2015; 10:e0130367. [PMID: 26151364 PMCID: PMC4494807 DOI: 10.1371/journal.pone.0130367] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 05/18/2015] [Indexed: 11/18/2022] Open
Abstract
Nitric oxide (NO) and 5-aminolevulinic acid (ALA) are both extremely important signalling molecules employed by plants to control many aspects of physiology. In the present study, the role of NO in ALA-induced antioxidant defense in leaves of two sources of Elymus nutans Griseb. (Damxung, DX and Zhengdao, ZD) was investigated. Chilling stress enhanced electrolyte leakage, accumulation of malondialdehyde (MDA), hydrogen peroxide (H2O2) and superoxide radical in two E. nutans, which were substantially alleviated by exogenous ALA and NO application. Pretreatment with NO scavenger PTIO or NOS inhibitor L-NNA alone and in combination with ALA induced enhancements in electrolyte leakage and the accumulation of MDA, H2O2 and superoxide radical in leaves of DX and ZD exposed to chilling stress, indicating that the inhibition of NO biosynthesis reduced the chilling resistance of E. nutans and the ALA-enhanced chilling resistance. Further analyses showed that ALA and NO enhanced antioxidant defense and activated plasma membrane (PM) H+-ATPase and decreased the accumulation of ROS induced by chilling stress. A pronounced increase in nitric oxide synthase (NOS) activity and NO release by exogenous ALA treatment was found in chilling-resistant DX plants exposed to chilling stress, while only a little increase was observed in chilling-sensitive ZD. Furthermore, inhibition of NO accumulation by PTIO or L-NNA blocked the protective effect of exogenous ALA, while both exogenous NO treatment and inhibition of endogenous NO accumulation did not induce ALA production. These results suggested that NO might be a downstream signal mediating ALA-induced chilling resistance in E. nutans.
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Affiliation(s)
- Juanjuan Fu
- Department of grassland science, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Xitong Chu
- Department of grassland science, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Yongfang Sun
- Department of grassland science, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Yanjun Miao
- College of Plant Science, Tibet Agriculture and Animal Husbandry College, Linzhi, Tibet 860000, China
| | - Yuefei Xu
- Department of grassland science, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
| | - Tianming Hu
- Department of grassland science, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, China
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18
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Wang L, He J, Ding H, Liu H, Lü B, Liang J, Wang L, He J, Ding HD, Liu H, Lü B, Liang JS. Overexpression of AT14A confers tolerance to drought stress-induced oxidative damage in suspension cultured cells of Arabidopsis thaliana. PROTOPLASMA 2015; 252:1111-1120. [PMID: 25500719 DOI: 10.1007/s00709-014-0744-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Accepted: 12/02/2014] [Indexed: 06/04/2023]
Abstract
Drought stress can affect interaction between plant cell plasma membrane and cell wall. Arabidopsis AT14A, an integrin-like protein, mediates the cell wall-plasma membrane-cytoskeleton continuum (WMC continuum). To gain further insight into the function of AT14A, the role of AT14A in response to drought stress simulated by polyethylene glycol (PEG-6000) in Arabidopsis suspension cultures was investigated. The expression of this gene was induced by PEG-6000 resulting from reverse transcription-PCR, which was further confirmed by the expression data from publically available microarray datasets. Compared to the wild-type cells, overexpression of AT14A (AT14A-OE) in Arabidopsis cultures exhibited a greater ability to adapt to water deficit, as evidenced by higher biomass accumulation and cell survival rate. Furthermore, AT14A-OE cells showed a higher tolerance to PEG-induced oxidative damage, as reflected by less H2O2 content, lipid peroxidation (malondialdehyde (MDA) content), and ion leakage, which was further verified by maintaining high levels of activities of antioxidant defense enzymes such as ascorbate peroxidase and guaiacol peroxidase and soluble protein. Taken together, our results suggest that overexpression of AT14A improves drought stress tolerance and that AT14A is involved in suppressing oxidative damage under drought stress in part via regulation of antioxidant enzyme activities.
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Affiliation(s)
- Lin Wang
- Key Laboratory of Crop Genetics and Physiology of Jiangsu Province, College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, 225009, China,
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19
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Gao LM, Li YF, Han R. He-Ne laser preillumination improves the resistance of tall fescue (Festuca arundinacea Schreb.) seedlings to high saline conditions. PROTOPLASMA 2015; 252:1135-1148. [PMID: 25547962 DOI: 10.1007/s00709-014-0748-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Accepted: 12/12/2014] [Indexed: 06/04/2023]
Abstract
In this paper, we explored the protective effect and physiochemical mechanism of He-Ne laser preillumination in enhancement of tall fescue seedlings tolerance to high salt stress. The results showed that salt stress greatly reduced plant growth, plant height, biomass, leaf development, ascorbate acid (AsA) and glutathione (GSH) concentration, the enzymatic activities, and gene expression levels of antioxidant enzymes such as catalase (CAT) and glutathione reductase (GR) and enhanced hydrogen peroxide (H2O2) content, superoxide radical (O2 (·-)) generation rates, membrane lipid peroxidation, relative electrolyte leakage, the enzymatic activities, and gene expression levels of superoxide dismutase (SOD), ascorbate peroxidase (APX), and peroxidase (POD), compared with controls. However, He-Ne laser preillumination significantly reversed plant growth retardation, biomass loss, and leaves development decay induced by salt stress. And the values of the physiochemical parameters observed in salt-stressed plants were partially reverted or further increased by He-Ne laser. Salt stress had no obvious effect on the transcriptional activity of phytochromeB, whereas He-Ne laser markedly enhanced its transcriptional level. Preillumination with white fluorescent lamps (W), red light (RL) of the same wavelength, or RL, then far-red light (FRL) had not alleviated the inhibitory effect of salt stress on plant growth and antioxidant enzymes activities, suggesting that the effect of He-Ne laser on improved salt tolerance was most likely attributed to the induction of phytochromeB transcription activities by the laser preillumination, but not RL, FRL or other light sources. In addition, we also utilized sodium nitroprusside (SNP) as NO donor to pre-treat tall fescue seedlings at the same conditions, and further evaluated the differences of physiological effects between He-Ne laser and NO in increasing salt resistance of tall fescue. Taken together, our data illustrated that He-Ne laser preillumination contributed to conferring an increased tolerance to salt stress in tall fescue seedlings due to alleviating oxidative damage through scavenging free radicals and inducing transcriptional activities of some genes involved in plant antioxidant system, and the induction of phytochromeB transcriptional level by He-Ne laser was probably correlated with these processes. Moreover, this positive physiochemical effect seemed more effective with He-Ne laser than NO molecule.
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Affiliation(s)
- Li-Mei Gao
- College of Life Science, Shanxi Normal University, Linfen, 041004, China,
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Zhao C, Wang X, Wang X, Wu K, Li P, Chang N, Wang J, Wang F, Li J, Bi Y. Glucose-6-phosphate dehydrogenase and alternative oxidase are involved in the cross tolerance of highland barley to salt stress and UV-B radiation. JOURNAL OF PLANT PHYSIOLOGY 2015; 181:83-95. [PMID: 26009793 DOI: 10.1016/j.jplph.2015.03.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 03/24/2015] [Accepted: 03/25/2015] [Indexed: 05/18/2023]
Abstract
In this study, a new mechanism involving glucose-6-phosphate dehydrogenase (G6PDH) and alternative pathways (AP) in salt pretreatment-induced tolerance of highland barley to UV-B radiation was investigated. When highland barley was exposed to UV-B radiation, the G6PDH activity decreased but the AP capacity increased. In contrast, under UV-B+NaCl treatment, the G6PDH activity was restored to the control level and the maximal AP capacity and antioxidant enzyme activities were reached. Glucosamine (Glucm, an inhibitor of G6PDH) obviously inhibited the G6PDH activity in highland barley under UV-B + NaCl treatment and a similar pattern was observed in reduced glutathione (GSH) and ascorbic acid (Asc) contents. Similarly, salicylhydroxamic acid (SHAM, an inhibitor of AOX) significantly reduced the AP capacity in highland barley under UV-B + NaCl treatment. The UV-B-induced hydrogen peroxide (H2O2) accumulation was also followed. Further studies indicated that non-functioning of G6PDH or AP under UV-B+NaCl + Glucm or UV-B + NaCl + SHAM treatment also caused damages in photosynthesis and stomatal movement. Western blot analysis confirmed that the alternative oxidase (AOX) and G6PDH were dependent each other in cross tolerance to UV-B and salt. The inhibition of AP or G6PDH activity resulted in a significant accumulation or reduction of NADPH content, respectively, under UV-B+NaCl treatment in highland barley leaves. Taken together, our results indicate that AP and G6PDH mutually regulate and maintain photosynthesis and stomata movement in the cross adaptation of highland barley seedlings to UV-B and salt by modulating redox homeostasis and NADPH content.
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Affiliation(s)
- Chengzhou Zhao
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Xiaomin Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China.
| | - Xiaoyu Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Kunlun Wu
- Qinghai Academy of Agricultural and Forestry Sciences, People's Republic of China
| | - Ping Li
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Ning Chang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Jianfeng Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Feng Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Jiaolong Li
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Yurong Bi
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China.
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Islam E, Khan MT, Irem S. Biochemical mechanisms of signaling: perspectives in plants under arsenic stress. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 114:126-33. [PMID: 25637747 DOI: 10.1016/j.ecoenv.2015.01.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2014] [Revised: 12/29/2014] [Accepted: 01/19/2015] [Indexed: 05/08/2023]
Abstract
Plants are the ultimate food source for humans, either directly or indirectly. Being sessile in nature, they are exposed to various biotic and abiotic stresses because of changing climate that adversely effects their growth and development. Contamination of heavy metals is one of the major abiotic stresses because of anthropogenic as well as natural factors which lead to increased toxicity and accumulation in plants. Arsenic is a naturally occurring metalloid toxin present in the earth crust. Due to its presence in terrestrial and aquatic environments, it effects the growth of plants. Plants can tolerate arsenic using several mechanisms like phytochelation, vacuole sequestration and activation of antioxidant defense systems. Several signaling mechanisms have evolved in plants that involve the use of proteins, calcium ions, hormones, reactive oxygen species and nitric oxide as signaling molecules to cope with arsenic toxicity. These mechanisms facilitate plants to survive under metal stress by activating their defense systems. The pathways by which these stress signals are perceived and responded is an unexplored area of research and there are lots of gaps still to be filled. A good understanding of these signaling pathways can help in raising the plants which can perform better in arsenic contaminated soil and water. In order to increase the survival of plants in contaminated areas there is a strong need to identify suitable gene targets that can be modified according to needs of the stakeholders using various biotechnological techniques. This review focuses on the signaling mechanisms of plants grown under arsenic stress and will give an insight of the different sensory systems in plants. Furthermore, it provides the knowledge about several pathways that can be exploited to develop plant cultivars which are resistant to arsenic stress or can reduce its uptake to minimize the risk of arsenic toxicity through food chain thus ensuring food security.
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Affiliation(s)
- Ejazul Islam
- Soil & Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad 38000, Pakistan.
| | - Muhammad Tahir Khan
- Soil & Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad 38000, Pakistan
| | - Samra Irem
- Soil & Environmental Biotechnology Division, National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad 38000, Pakistan
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22
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Liao WB, Huang GB, Yu JH, Zhang ML. Nitric oxide and hydrogen peroxide alleviate drought stress in marigold explants and promote its adventitious root development. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2012; 58:6-15. [PMID: 22771430 DOI: 10.1016/j.plaphy.2012.06.012] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Accepted: 06/09/2012] [Indexed: 05/21/2023]
Abstract
Drought stress is one of the most important environmental factors that regulates plant growth and development. In this study, we examined the effects of nitric oxide (NO) and hydrogen peroxide (H(2)O(2)) on adventitious rooting in marigold (Tagetes erecta L.) under drought stress. The results showed that the promoting effect of NO or H(2)O(2) on rooting under drought stress was dose-dependent, with a maximal biological response at 10 μM NO donor sodium nitroprusside (SNP) or 600 μM H(2)O(2). Results also indicated that endogenous NO and H(2)O(2) may play crucial roles in rooting under drought conditions, and H(2)O(2) may be involved in rooting promoted by NO under drought stress. NO or H(2)O(2) treatment attenuated the destruction of mesophyll cells ultrastructure by drought stress. Similarly, NO or H(2)O(2) increased leaf chlorophyll content, chlorophyll fluorescence parameters (Fv/Fm, ΦPS II and qP), and hypocotyls soluble carbohydrate and protein content, while decreasing starch content. Results suggest that the protection of mesophyll cells ultrastructure by NO or H(2)O(2) under drought conditions improves the photosynthetic performance of leaves and alleviates the negative effects of drought on carbohydrate and nitrogen accumulation in explants, thereby adventitious rooting being promoted.
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Affiliation(s)
- Wei-Biao Liao
- Gansu Key Laboratory of Aridland Crop Science, College of Agronomy, Gansu Agricultural University, No. 1 Yinmen Village, Anning District, Lanzhou 730070, China.
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23
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Esim N, Atici O, Mutlu S. Effects of exogenous nitric oxide in wheat seedlings under chilling stress. Toxicol Ind Health 2012; 30:268-74. [DOI: 10.1177/0748233712457444] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The effects of nitric oxide (NO) on chilling tolerance (contents of hydrogen peroxide (H2O2) and superoxide anion (O2–) and lipid peroxidation level (malondialdehyde, MDA)) and the activities of antioxidant enzymes (superoxide dismutase (SOD), peroxidase (POX) and catalase (CAT)) were investigated in the leaves of wheat ( Triticum aestivum L.) exposed to chilling. NO treatment was carried out through spraying of sodium nitroprusside (SNP), which is a donor of NO. To do this, SNP concentrations of 0.1 and 1 mM were applied on the leaves of 11-day plants and the plants were then exposed to chilling conditions (5/2°C) for 3 days. The chilling stress treatment increased both the activities of antioxidant enzymes and the levels of MDA, H2O2 and O2–. Similarly, NO treatment enhanced SOD, POX and CAT activities under chilling stress, whereas it decreased H2O2 and O2.– contents as well as MDA level. The most effective concentration was determined as 0.1 mM SNP. Exogenous SNP application as a donor of NO was found to have an important ameliorative effect on cold tolerance of seedling exposed to chilling stress by stimulating antioxidant enzyme activity.
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Affiliation(s)
- Nevzat Esim
- Vocational Training School, Bingol University, Bingöl, Turkey
| | - Okkes Atici
- Department of Biology, Faculty of Science, Ataturk University, Erzurum, Turkey
| | - Salih Mutlu
- Department of Biology, Faculty of Science and Art, Erzincan University, Erzincan, Turkey
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Isolation, molecular characterization, and functional analysis of the vacuolar Na+/H+ antiporter genes from the halophyte Karelinia caspica. Mol Biol Rep 2012; 39:7193-202. [PMID: 22311041 DOI: 10.1007/s11033-012-1551-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2011] [Accepted: 01/24/2012] [Indexed: 12/23/2022]
Abstract
The full-length cDNAs of two Karelinia caspica genes, KcNHX1 and KcNHX2, were isolated by RACE and RT-PCR based on the conserved regions of Na(+)/H(+) antiporter (NHX) genes from other halophyte species. The cloned KcNHX1 cDNA contained 2,022 nucleotides with an open reading frame (ORF) of 1,620 bp and the KcNHX2 cDNA contained 1,976 nucleotides with an ORF of 1,653 bp. The deduced amino acid sequences indicated that both genes were homologous to NHXs from other higher plants. To investigate the possible roles of KcNHX1 and KcNHX2 in the salt stress response of K. caspica and the underlying regulatory mechanisms, RNAi vectors were constructed and transformed into K. caspica to specifically silence endogenous KcNHX1 and KcNHX2. The physiological results showed that silencing KcNHX1 in K. caspica led to reduced salt tolerance in high concentrations of NaCl, suggesting that KcNHX1 plays an essential role in the response of K. caspica to salt stress. However, the inhibition of KcNHX2 seemed to have little influence on the salt resistance of transgenic plants, indicating that KcNHX2 may be relevant for functions other than salt tolerance in K. caspica.
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Romano G, Costantini M, Buttino I, Ianora A, Palumbo A. Nitric oxide mediates the stress response induced by diatom aldehydes in the sea urchin Paracentrotus lividus. PLoS One 2011; 6:e25980. [PMID: 22022485 PMCID: PMC3191173 DOI: 10.1371/journal.pone.0025980] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Accepted: 09/14/2011] [Indexed: 11/18/2022] Open
Abstract
Diatoms are ubiquitous and abundant primary producers that have been traditionally considered as a beneficial food source for grazers and for the transfer of carbon through marine food webs. However, many diatom species produce polyunsaturated aldehydes that disrupt development in the offspring of grazers that feed on these unicellular algae. Here we provide evidence that production of the physiological messenger nitric oxide increases after treatment with the polyunsaturated aldehyde decadienal in embryos of the sea urchin Paracentrotus lividus. At high decadienal concentrations, nitric oxide mediates initial apoptotic events leading to loss of mitochondrial functionality through the generation of peroxynitrite. At low decadienal concentrations, nitric oxide contributes to the activation of hsp70 gene expression thereby protecting embryos against the toxic effects of this aldehyde. When nitric oxide levels were lowered by inhibiting nitric oxide synthase activity, the expression of hsp70 in swimming blastula decreased and the proportion of abnormal plutei increased. However, in later pluteus stages nitric oxide was no longer able to exert this protective function: hsp70 and nitric oxide synthase expression decreased with a consequent increase in the expression of caspase-8. Our findings that nitric oxide production increases rapidly in response to a toxic exogenous stimulus opens new perspectives on the possible role of this gas as an important messenger to environmental stress in sea urchins and for understanding the cellular mechanisms underlying toxicity during diatom blooms.
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Affiliation(s)
- Giovanna Romano
- Laboratory of Functional and Evolutionary Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, Naples, Italy
| | - Maria Costantini
- Laboratory of Cellular and Developmental Biology, Stazione Zoologica Anton Dohrn, Villa Comunale, Naples, Italy
| | - Isabella Buttino
- Laboratory of Functional and Evolutionary Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, Naples, Italy
| | - Adrianna Ianora
- Laboratory of Functional and Evolutionary Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, Naples, Italy
| | - Anna Palumbo
- Laboratory of Cellular and Developmental Biology, Stazione Zoologica Anton Dohrn, Villa Comunale, Naples, Italy
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26
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Siddiqui MH, Al-Whaibi MH, Basalah MO. Role of nitric oxide in tolerance of plants to abiotic stress. PROTOPLASMA 2011; 248:447-55. [PMID: 20827494 DOI: 10.1007/s00709-010-0206-9] [Citation(s) in RCA: 140] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2010] [Accepted: 08/26/2010] [Indexed: 05/21/2023]
Abstract
Nitric oxide (NO) has now gained significant place in plant science, mainly due to its properties (free radical, small size, no charge, short-lived, and highly diffusible across biological membranes) and multifunctional roles in plant growth, development, and regulation of remarkable spectrum of plant cellular mechanisms. In the last few years, the role of NO in tolerance of plants to abiotic stress has established much consideration. As it is evident from the present review, recent progress on NO potentiality in tolerance of plants to environmental stresses has been impressive. These investigations suggest that NO, itself, possesses antioxidant properties and might act as a signal in activating ROS-scavenging enzyme activities under abiotic stress. NO plays an important role in resistance to salt, drought, temperature (high and low), UV-B, and heavy metal stress. Rapidly increasing evidences indicate that NO is essentially involve in several physiological processes; however, there has been much disagreement regarding the mechanism(s) by which NO reduces abiotic stress.
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Affiliation(s)
- Manzer H Siddiqui
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia.
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27
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Liu Y, Jiang H, Zhao Z, An L. Abscisic acid is involved in brassinosteroids-induced chilling tolerance in the suspension cultured cells from Chorispora bungeana. JOURNAL OF PLANT PHYSIOLOGY 2011; 168:853-862. [PMID: 21444124 DOI: 10.1016/j.jplph.2010.09.020] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2010] [Revised: 07/23/2010] [Accepted: 09/10/2010] [Indexed: 05/30/2023]
Abstract
The objective of this study was to investigate whether abscisic acid (ABA), a second messenger in chilling stress responses, is involved in brassinosteroids (BRs)-induced chilling tolerance in suspension cultured cells from Chorispora bungeana. The suspension cells were treated with 24-epibrassinolide (EBR), ABA, ABA biosynthesis inhibitor fluridone (Flu) and EBR in combination with Flu. Their effects on chilling tolerance, reactive oxygen species (ROS) levels and antioxidant defense system were analyzed. The results showed that EBR treatment markedly alleviated the decrease of cell viability and the increases of ion leakage and lipid peroxidation induced by chilling stress, suggesting that application of EBR could improve the chilling tolerance of C. bungeana suspension cultures. In addition, similar results were observed when exogenous ABA was applied. Treatment with Flu alone and in combination with EBR significantly suppressed cell viability and increased ion leakage and lipid peroxidation under low temperature conditions, indicating that the inhibition of ABA biosynthesis could decrease the chilling tolerance of C. bungeana suspension cultures and the EBR-enhanced chilling tolerance. Further analyses showed that EBR and ABA enhanced antioxidant defense and slowed down the accumulation of ROS caused by chilling. However, Flu application differentially blocked these protective effects of EBR. Moreover, EBR was able to mimic the effect of ABA by markedly increasing ABA content in the suspension cells under chilling conditions, whereas the EBR-induced ABA accumulation was inhibited by the addition of Flu. Taken together, these results demonstrate that EBR may confer chilling tolerance to C. bungeana suspension cultured cells by enhancing the antioxidant defense system, which is partially mediated by ABA, resulting in preventing the overproduction of ROS to alleviate oxidative injury induced by chilling.
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Affiliation(s)
- Yajie Liu
- Key Laboratory of Arid and Grassland Agroecology of Ministry of Education, School of Life Sciences, Lanzhou University, Lanzhou 730000, People's Republic of China
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Huang AX, She XP. Actin microfilaments and vacuoles are downstream targets of H 2O 2 signalling pathways in hyperosmotic stress-induced stomatal closure. FUNCTIONAL PLANT BIOLOGY : FPB 2011; 38:303-313. [PMID: 32480886 DOI: 10.1071/fp10079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2010] [Accepted: 02/08/2011] [Indexed: 06/11/2023]
Abstract
Changes in osmotic pressure can induce stomatal closure to reduce transpirational water loss from plants. In the present work, we investigated the mechanism underlying the perception and transduction of extracellular changes in osmotic pressure in Vicia faba L. guard cells. Using an epidermal strip bioassay and laser-scanning confocal microscopy, we provide evidence that hyperosmotic stress treatment led to stomatal closure and the rapid promotion of hydrogen peroxide (H2O2) production in V. faba guard cells. The effects were largely reduced by H2O2 scavengers ASA, CAT, NADPH oxidase inhibitor DPI and cell wall peroxidase inhibitor SHAM. These results indicate that hyperosmotic stress induces stomatal closure by promoting H2O2 production. Cytochalasin B (CB), latrunculin B (Lat B) and jasplakinolide (JK) inhibited stomatal closure induced by hyperosmotic stress but didn't prevent the increase of endogenous H2O2 levels, suggesting that microfilaments reorganisation participates in stomatal closure induced by hyperosmotic stress, and may act downstream of H2O2 signalling processes. In addition, we observed splitting of big vacuoles into many small vacuoles in response to hyperosmotic stress and H2O2 treatment, and CB inhibited these changes of vacuoles; stomatal closure was also inhibited. Taken together these results indicate that the stomatal closure in response to hyperosmotic stress may initiate H2O2 generation, and that reorganisation of microfilaments and the changing of vacuoles occurs downstream of H2O2 signalling processes.
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Affiliation(s)
- Ai-Xia Huang
- Key Laboratory of Medicinal Plant Resource and Natural Pharmaceutical Chemistry of Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
| | - Xiao-Ping She
- College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
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29
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Wang C, Zhang SH, Li W, Wang PF, Li L. Nitric oxide supplementation alleviates ammonium toxicity in the submerged macrophyte Hydrilla verticillata (L.f.) Royle. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2011; 74:67-73. [PMID: 20655590 DOI: 10.1016/j.ecoenv.2010.07.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2010] [Revised: 07/02/2010] [Accepted: 07/03/2010] [Indexed: 05/29/2023]
Abstract
The likely protective effects of nitric oxide (NO) against ammonium toxicity were investigated in the submerged macrophyte Hydrilla verticillata. The plants were subjected to ammonium stress (3mM ammonium chloride) in the presence of sodium nitroprusside (SNP, 10 μM), an NO donor. Treatment with SNP significantly increased the NO content and partially reversed the ammonium-induced negative effects, including membrane damage and the decrease in levels of chlorophyll, malondialdehyde, glutathione and ascorbic acid. Further, SNP application increased the catalytic activities of ascorbate peroxidase, superoxide dismutase, guaiacol peroxidase, catalase and glutathione S-transferase, but decreased that of NADH-oxidase. Histochemical staining showed that SNP application caused a significant decrease in the levels of superoxides and hydrogen peroxide. In contrast, application of other breakdown products of SNP (10 μM sodium ferrocyanide, 10 μM sodium nitrite and 10 μM sodium nitrate) failed to show any protective effect. The results suggest that the increased intracellular NO, resulting from SNP application, improved the antioxidant capacity of H. verticillata plants in coping with ammonium-induced oxidative stress.
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Affiliation(s)
- Chao Wang
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes and College of Environment, Hohai University, Xi Kang Road no. 1, JiangSu province, Nanjing 210098, China
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30
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Liu Y, Jiang H, Zhao Z, An L. Nitric oxide synthase like activity-dependent nitric oxide production protects against chilling-induced oxidative damage in Chorispora bungeana suspension cultured cells. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2010; 48:936-44. [PMID: 20875746 DOI: 10.1016/j.plaphy.2010.09.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Revised: 07/07/2010] [Accepted: 09/07/2010] [Indexed: 05/08/2023]
Abstract
In the present study, we used suspension cultured cells from Chorispora bungeana Fisch. and C.A. Mey to investigate whether nitric oxide (NO) is involved in the signaling pathway of chilling adaptive responses. Low temperatures at 4 °C or 0 °C induced ion leakage, lipid peroxidation and cell viability suppression, which were dramatically alleviated by exogenous application of NO donor sodium nitroprusside (SNP). The levels of reactive oxygen species (ROS) were obviously reduced, and the activities of antioxidant enzymes such as ascorbate peroxidase (APX, EC 1.11.1.11), catalase (CAT, EC 1.11.1.6), glutathione reductase (GR, EC 1.6.4.2), peroxidase (POD, EC 1.11.1.7) and superoxide dismutase (SOD, EC 1.15.1.1) and the contents of ascorbic acid (AsA) and reduced glutathione (GSH) increased evidently in the presence of SNP under chilling stress. In addition, under low temperature conditions, treatment with NO scavenger PTIO or mammalian NO synthase (NOS) inhibitor l-NAME remarkably aggravated oxidative damage in the suspension cultures compared with that of chilling treatment alone. Moreover, measurements of NOS activity and NO production showed that both NOS activity and endogenous NO content increased markedly under chilling stress. The accumulation of NO was inhibited by l-NAME in chilling-treated cultures, indicating that most NO production under chilling may be generated from NOS-like activity. Collectively, these results suggest that chilling-induced NO accumulation can effectively protect against oxidative injury and that NOS like activity-dependent NO production might act as an antioxidant directly scavengering ROS or operate as a signal activating antioxidant defense under chilling stress, thus conferring an increased tolerance to chilling in C. bungeana suspension cultures.
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Affiliation(s)
- Yajie Liu
- Key Laboratory of Arid and Grassland Agroecology of Ministry of Education, School of Life Sciences, Lanzhou University, Lanzhou 730000, People's Republic of China
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31
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Costantini D, Rowe M, Butler MW, McGraw KJ. From molecules to living systems: historical and contemporary issues in oxidative stress and antioxidant ecology. Funct Ecol 2010. [DOI: 10.1111/j.1365-2435.2010.01746.x] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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32
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Xu Y, Sun X, Jin J, Zhou H. Protective effect of nitric oxide on light-induced oxidative damage in leaves of tall fescue. JOURNAL OF PLANT PHYSIOLOGY 2010; 167:512-8. [PMID: 19931209 DOI: 10.1016/j.jplph.2009.10.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2009] [Revised: 10/26/2009] [Accepted: 10/26/2009] [Indexed: 05/06/2023]
Abstract
Nitric oxide (NO) is an important signaling molecule involved in many physiological processes. In this study, the effect of NO on oxidative damage caused by high levels of light was investigated in leaves of two varieties of tall fescue (Arid3 and Houndog5). Leaves of Houndog5 were more susceptible to high-light stress than Arid3 leaves. Pretreatment of these leaves with NO donor sodium nitroprusside (SNP), prior to exposure to high-light stress, resulted in reduced light-induced electrolyte leakage and reduced contents of malondialdehyde, hydrogen peroxide (H(2)O(2)) and superoxide radicals (O(2)(*-)). The activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX) and glutathione reductase (GR) increased in both varieties in the presence of SNP under high-light stress, but lipoxygenase (LOX) activity was inhibited. These responses could be reversed by pretreatment with the NO scavenger 2-(4-carboxy-2-phenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (PTIO). A pronounced increase in nitric oxide synthase (NOS) activity and NO release was found in light-tolerant Arid3 plants after exposure to high-light stress, while only a small increase was observed in more sensitive Houndog5. Pretreatment with the NOS inhibitor N(omega)-nitro-l-arginine (LNNA) resulted in increased oxidative damage under high-light stress, with more injuries occurring in Arid3 than Houndog5. These results suggest that high-light stress induced increased NOS activity leading to elevated NO. This NO might act as a signaling molecule triggering enhanced activities of antioxidant enzymes, further protecting against injuries caused by high intensity light. This protective mechanism was found to more efficiently acclimate light-tolerant Arid3 than light-sensitive Houndog5.
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Affiliation(s)
- Yuefei Xu
- Department of Grassland Science, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
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33
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Kumari A, Sheokand S, Swaraj K. Nitric oxide induced alleviation of toxic effects of short term and long term Cd stress on growth, oxidative metabolism and Cd accumulation in Chickpea. ACTA ACUST UNITED AC 2010. [DOI: 10.1590/s1677-04202010000400007] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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34
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Sheokand S, Bhankar V, Sawhney V. Ameliorative effect of exogenous nitric oxide on oxidative metabolism in NaCl treated chickpea plants. ACTA ACUST UNITED AC 2010. [DOI: 10.1590/s1677-04202010000200002] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Seshadri G, Sy JC, Brown M, Dikalov S, Yang SC, Murthy N, Davis ME. The delivery of superoxide dismutase encapsulated in polyketal microparticles to rat myocardium and protection from myocardial ischemia-reperfusion injury. Biomaterials 2009; 31:1372-9. [PMID: 19889454 DOI: 10.1016/j.biomaterials.2009.10.045] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2009] [Accepted: 10/20/2009] [Indexed: 12/28/2022]
Abstract
Oxidative stress is increased in the myocardium following infarction and plays a significant role in death of cardiac myocytes, leading to cardiac dysfunction. Levels of the endogenous antioxidant Cu/Zn-superoxide dismutase (SOD1) decrease following myocardial infarction. While SOD1 gene therapy studies show promise, trials with SOD1 protein have had little success due to poor pharmacokinetics and thus new delivery vehicles are needed. In this work, polyketal particles, a recently developed delivery vehicle, were used to make SOD1-encapsulated-microparticles (PKSOD). Our studies with cultured macrophages demonstrated that PKSOD treatment scavenges both intracellular and extracellular superoxide, suggesting efficient delivery of SOD1 protein to the inside of cells. In a rat model of ischemia/reperfusion (IR) injury, injection of PKSOD, and not free SOD1 or empty particles was able to scavenge IR-induced excess superoxide 3 days following infarction. In addition, only PKSOD treatment significantly reduced myocyte apoptosis. Further, PKSOD treatment was able to improve cardiac function as measured by acute changes in fractional shortening from baseline echocardiography, suggesting that sustained delivery of SOD1 is critical during the early phase of cardiac repair. These data demonstrate that delivery of SOD1 with polyketals is superior to free SOD1 protein therapy and may have potential clinical implications.
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Affiliation(s)
- Gokulakrishnan Seshadri
- Wallace H. Coulter Department of Biomedical Engineering at Emory University and Georgia Institute of Technology, Atlanta, GA 30322, USA
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Huang AX, She XP, Cao B, Zhang B, Mu J, Zhang SJ. Nitric oxide, actin reorganization and vacuoles change are involved in PEG 6000-induced stomatal closure in Vicia faba. PHYSIOLOGIA PLANTARUM 2009; 136:45-56. [PMID: 19508367 DOI: 10.1111/j.1399-3054.2009.01212.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Water deficit and the resulting osmotic stress affect stomatal movement. There are two types of signals, hydraulic and chemical signals, involving in the regulation of stomatal behavior responses to osmotic stress. Compared with the chemical signals, little has been known about the hydraulic signals and the corresponding signal transduction network and regulatory mechanisms. Here, using an epidermal-strip bioassay and laser-scanning confocal microscopy, we provide evidence that nitric oxide (NO) generation in Vicia faba guard cells can be induced by hydraulic signals. We used polyethylene glycol (PEG) 600 to simulate hypertonic conditions. This hydraulic signal led to stomatal closure and rapid promotion of NO production in guard cells. The effects were decreased by NO scavenger 2-(4-carboxyphenyl)-4,4,5, 5-tetramethylimidazoline-1-oxyl-3-oxide (c-PTIO) and NO synthase (Enzyme Commission 1.14.13.39) inhibitor N(G)-nitro-L-Arg-methyl ester (L-NAME). These results indicate that PEG 6000 induces stomatal closure by promoting NO production. Cytochalasin B (CB) inhibited stomatal closure induced by PEG 6000 but did not prevent the increase of endogenous NO levels, indicating that microfilaments polymerization participate in stomatal closure induced by PEG 6000, and may act downstream of NO signaling. In addition, big vacuoles split into many small vacuoles were observed in response to PEG 6000 and sodium nitroprusside (SNP) treatment, and CB inhibited these changes of vacuoles, the stomatal closure was also been inhibited. Collectively, these results suggest that the stomatal closure induced by PEG 6000 may be intimately associated with NO levels, reorganization of actin filaments and the changes of vacuoles, showing a crude outline of guard-cells signaling process in response to hydraulic signals.
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Affiliation(s)
- Ai-Xia Huang
- Key Laboratory of Medicinal Plant Resource and Natural Pharmaceutical Chemistry of Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, China
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37
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Qiao W, Fan LM. Nitric oxide signaling in plant responses to abiotic stresses. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2008; 50:1238-46. [PMID: 19017111 DOI: 10.1111/j.1744-7909.2008.00759.x] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Nitric oxide (NO) plays important roles in diverse physiological processes in plants. NO can provoke both beneficial and harmful effects, which depend on the concentration and location of NO in plant cells. This review is focused on NO synthesis and the functions of NO in plant responses to abiotic environmental stresses. Abiotic stresses mostly induce NO production in plants. NO alleviates the harmfulness of reactive oxygen species, and reacts with other target molecules, and regulates the expression of stress responsive genes under various stress conditions.
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Affiliation(s)
- Weihua Qiao
- Peking-Yale Joint Center for Plant Molecular Genetics and Agro-Biotechnology, National Laboratory of Protein Engineering and Plant Genetic Engineering, College of Life Sciences, Peking University, Beijing 100871, China
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