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Hou D, Liu K, Liu S, Li J, Tan J, Bi Q, Zhang A, Yu X, Bi J, Luo L. Enhancing root physiology for increased yield in water-saving and drought-resistance rice with optimal irrigation and nitrogen. FRONTIERS IN PLANT SCIENCE 2024; 15:1370297. [PMID: 38779071 PMCID: PMC11109435 DOI: 10.3389/fpls.2024.1370297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Accepted: 04/23/2024] [Indexed: 05/25/2024]
Abstract
Objectives Water-saving and drought-resistance rice (WDR) plays a vital role in the sustainable development of agriculture. Nevertheless, the impacts and processes of water and nitrogen on grain yield in WDR remain unclear. Methods In this study, Hanyou 73 (WDR) and Hyou 518 (rice) were used as materials. Three kinds of nitrogen fertilizer application rate (NFAR) were set in the pot experiment, including no NFAR (nitrogen as urea applied at 0 g/pot), medium NFAR (nitrogen as urea applied at 15.6 g/pot), and high NFAR (nitrogen as urea applied at 31.2 g/pot). Two irrigation regimes, continuous flooding cultivation and water stress, were set under each NFAR. The relationships between root and shoot morphophysiology and grain yield in WDR were explored. Results The results demonstrated the following: 1) under the same irrigation regime, the grain yield of two varieties increased with the increase of NFAR. Under the same NFAR, the reduction of irrigation amount significantly reduced the grain yield in Hyou 518 (7.1%-15.1%) but had no substantial influence on the grain yield in Hanyou 73. 2) Under the same irrigation regime, increasing the NFAR could improve the root morphophysiology (root dry weight, root oxidation activity, root bleeding rate, root total absorbing surface area, root active absorbing surface area, and zeatin + zeatin riboside contents in roots) and aboveground physiological indexes (leaf photosynthetic rate, non-structural carbohydrate accumulation in stems, and nitrate reductase activity in leaves) in two varieties. Under the same NFAR, increasing the irrigation amount could significantly increase the above indexes in Hyou 518 (except root dry weight) but has little effect on Hanyou 73. 3) Analysis of correlations revealed that the grain yield of Hyou 518 and Hanyou 73 was basically positively correlated with aboveground physiology and root morphophysiology, respectively. Conclusion The grain yield could be maintained by water stress under medium NFAR in WDR. The improvement of root morphophysiology is a major factor for high yield under the irrigation regime and NFAR treatments in WDR.
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Affiliation(s)
- Danping Hou
- Shanghai Agrobiological Gene Center, Shanghai, China
| | - Kun Liu
- Institute for Agri-food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, Shanghai, China
| | - Shikun Liu
- Agronomy College, Jilin Agricultural University, Changchun, China
| | - Juncai Li
- Shanghai Agrobiological Gene Center, Shanghai, China
| | - Jinsong Tan
- Shanghai Agrobiological Gene Center, Shanghai, China
| | - Qingyu Bi
- Shanghai Agrobiological Gene Center, Shanghai, China
| | - Anning Zhang
- Shanghai Agrobiological Gene Center, Shanghai, China
| | - Xinqiao Yu
- Shanghai Agrobiological Gene Center, Shanghai, China
| | - Junguo Bi
- Shanghai Agrobiological Gene Center, Shanghai, China
| | - Lijun Luo
- Shanghai Agrobiological Gene Center, Shanghai, China
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Mao K, Yang J, Sun Y, Guo X, Qiu L, Mei Q, Li N, Ma F. MdbHLH160 is stabilized via reduced MdBT2-mediated degradation to promote MdSOD1 and MdDREB2A-like expression for apple drought tolerance. PLANT PHYSIOLOGY 2024; 194:1181-1203. [PMID: 37930306 DOI: 10.1093/plphys/kiad579] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/26/2023] [Accepted: 09/27/2023] [Indexed: 11/07/2023]
Abstract
Drought stress is a key environmental factor limiting the productivity, quality, and geographic distribution of crops worldwide. Abscisic acid (ABA) plays an important role in plant drought stress responses, but the molecular mechanisms remain unclear. Here, we report an ABA-responsive bHLH transcription factor, MdbHLH160, which promotes drought tolerance in Arabidopsis (Arabidopsis thaliana) and apple (Malus domestica). Under drought conditions, MdbHLH160 is directly bound to the MdSOD1 (superoxide dismutase 1) promoter and activated its transcription, thereby triggering reactive oxygen species (ROS) scavenging and enhancing apple drought tolerance. MdbHLH160 also promoted MdSOD1 enzyme activity and accumulation in the nucleus through direct protein interactions, thus inhibiting excessive nuclear ROS levels. Moreover, MdbHLH160 directly upregulated the expression of MdDREB2A-like, a DREB (dehydration-responsive element binding factor) family gene that promotes apple drought tolerance. Protein degradation and ubiquitination assays showed that drought and ABA treatment stabilized MdbHLH160. The BTB protein MdBT2 was identified as an MdbHLH160-interacting protein that promoted MdbHLH160 ubiquitination and degradation, and ABA treatment substantially inhibited this process. Overall, our findings provide insights into the molecular mechanisms of ABA-modulated drought tolerance at both the transcriptional and post-translational levels via the ABA-MdBT2-MdbHLH160-MdSOD1/MdDREB2A-like cascade.
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Affiliation(s)
- Ke Mao
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Jie Yang
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Yunxia Sun
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Xin Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Lina Qiu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Quanlin Mei
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Na Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
| | - Fengwang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A & F University, Yangling 712100, Shaanxi, China
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Bonilla-Cordova M, Cruz-Villacorta L, Echegaray-Cabrera I, Ramos-Fernández L, Flores del Pino L. Design of a Portable Analyzer to Determine the Net Exchange of CO 2 in Rice Field Ecosystems. SENSORS (BASEL, SWITZERLAND) 2024; 24:402. [PMID: 38257497 PMCID: PMC10821284 DOI: 10.3390/s24020402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/03/2024] [Accepted: 01/04/2024] [Indexed: 01/24/2024]
Abstract
Global warming is influenced by an increase in greenhouse gas (GHG) concentration in the atmosphere. Consequently, Net Ecosystem Exchange (NEE) is the main factor that influences the exchange of carbon (C) between the atmosphere and the soil. As a result, agricultural ecosystems are a potential carbon dioxide (CO2) sink, particularly rice paddies (Oryza sativa). Therefore, a static chamber with a portable CO2 analyzer was designed and implemented for three rice plots to monitor CO2 emissions. Furthermore, a weather station was installed to record meteorological variables. The vegetative, reproductive, and maturation phases of the crop lasted 95, 35, and 42 days post-sowing (DPS), respectively. In total, the crop lasted 172 DPS. Diurnal NEE had the highest CO2 absorption capacity at 10:00 a.m. for the tillering stage (82 and 89 DPS), floral primordium (102 DPS), panicle initiation (111 DPS), and flowering (126 DPS). On the other hand, the maximum CO2 emission at 82, 111, and 126 DPS occurred at 6:00 p.m. At 89 and 102 DPS, it occurred at 4:00 and 6:00 a.m., respectively. NEE in the vegetative stage was -25 μmolCO2 m2 s-1, and in the reproductive stage, it was -35 μmolCO2 m2 s-1, indicating the highest absorption capacity of the plots. The seasonal dynamics of NEE were mainly controlled by the air temperature inside the chamber (Tc) (R = -0.69), the relative humidity inside the chamber (RHc) (R = -0.66), and net radiation (Rn) (R = -0.75). These results are similar to previous studies obtained via chromatographic analysis and eddy covariance (EC), which suggests that the portable analyzer could be an alternative for CO2 monitoring.
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Affiliation(s)
- Mirko Bonilla-Cordova
- Department of Environmental Engineering, Universidad Nacional Agraria La Molina, Lima 15024, Peru; (M.B.-C.); (I.E.-C.)
| | - Lena Cruz-Villacorta
- Department of Territorial Planning and Doctoral Program of Engineering and Environmental Sciences, Universidad Nacional Agraria La Molina, Lima 15024, Peru;
| | - Ida Echegaray-Cabrera
- Department of Environmental Engineering, Universidad Nacional Agraria La Molina, Lima 15024, Peru; (M.B.-C.); (I.E.-C.)
| | - Lia Ramos-Fernández
- Department of Water Resources, Universidad Nacional Agraria La Molina, Lima 15024, Peru
| | - Lisveth Flores del Pino
- Research Center for Environmental Chemistry, Toxicology and Biotechnology, Universidad Nacional Agraria La Molina, Lima 15024, Peru;
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Liu Z, Bian N, Guo J, Zhao S, Khan A, Chu B, Ma Z, Niu C, Ma F, Ma M, Guan Q, Li X. Interfering small ubiquitin modifiers (SUMO) improves the thermotolerance of apple by facilitating the activity of MdDREB2A. STRESS BIOLOGY 2023; 3:10. [PMID: 37676624 PMCID: PMC10442018 DOI: 10.1007/s44154-023-00089-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 04/14/2023] [Indexed: 09/08/2023]
Abstract
Heat stress, which is caused by global warming, threatens crops yield and quality across the world. As a kind of post-translation modification, SUMOylation involves in plants heat stress response with a rapid and wide pattern. Here, we identified small ubiquitin modifiers (SUMO), which affect drought tolerance in apple, also participated in thermotolerance. Six isoforms of SUMOs located on six chromosomes in apple genome, and all the SUMOs were up-regulated in response to heat stress condition. The MdSUMO2 RNAi transgenic apple plants exhibited higher survival rate, lower ion leakage, higher catalase (CAT) activity, and Malondialdehyde (MDA) content under heat stress. MdDREB2A, the substrate of MdSUMO2 in apple, was accumulated in MdSUMO2 RNAi transgenic plants than the wild type GL-3 at the protein level in response to heat stress treatment. Further, the inhibited SUMOylation level of MdDREB2A in MdSUMO2 RNAi plants might repress its ubiquitination, too. The accumulated MdDREB2A in MdSUMO2 RNAi plants further induced heat-responsive genes expression to strengthen plants thermotolerance, including MdHSFA3, MdHSP26.5, MdHSP18.2, MdHSP70, MdCYP18-1 and MdTLP1. In summary, these findings illustrate that interfering small ubiquitin modifiers (SUMO) in apple improves plants thermotolerance, partly by facilitating the stability and activity of MdDREB2A.
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Affiliation(s)
- Zeyuan Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Ningning Bian
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Jianyan Guo
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Shuang Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Abid Khan
- Department of Horticulture, The University of Haripur, Haripur, 22620, Pakistan
| | - Baohua Chu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Ziqing Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Chundong Niu
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Fengwang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Ming Ma
- Gansu Academy of Agricultural Sciences, Lanzhou, 730000, Gansu, China
| | - Qingmei Guan
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Xuewei Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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Zhang H, Pei Y, He Q, Zhu W, Jahangir M, Haq SU, Khan A, Chen R. Salicylic acid-related ribosomal protein CaSLP improves drought and Pst.DC3000 tolerance in pepper. MOLECULAR HORTICULTURE 2023; 3:6. [PMID: 37789468 PMCID: PMC10514951 DOI: 10.1186/s43897-023-00054-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 03/06/2023] [Indexed: 10/05/2023]
Abstract
The ribosomal protein contains complex structures that belong to polypeptide glycoprotein family, which are involved in plant growth and responses to various stresses. In this study, we found that capsicum annuum 40S ribosomal protein SA-like (CaSLP) was extensively accumulated in the cell nucleus and cell membrane, and the expression level of CaSLP was up-regulated by Salicylic acid (SA) and drought treatment. Significantly fewer peppers plants could withstand drought stress after CaSLP gene knockout. The transient expression of CaSLP leads to drought tolerance in pepper, and Arabidopsis's ability to withstand drought stress was greatly improved by overexpressing the CaSLP gene. Exogenous application of SA during spraying season enhanced drought tolerance. CaSLP-knockdown pepper plants demonstrated a decreased resistance of Pseudomonas syringae PV.tomato (Pst) DC3000 (Pst.DC3000), whereas ectopic expression of CaSLP increased the Pst.DC3000 stress resistance in Arabidopsis. Yeast two-hybrid (Y2H) and bimolecular fluorescence complementation (BiFC) results showed that CaNAC035 physically interacts with CaSLP in the cell nucleus. CaNAC035 was identified as an upstream partner of the CaPR1 promoter and activated transcription. Collectively the findings demonstrated that CaSLP plays an essential role in the regulation of drought and Pst.DC3000 stress resistance.
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Affiliation(s)
- Huafeng Zhang
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yingping Pei
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Qiang He
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Wang Zhu
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Maira Jahangir
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Saeed Ul Haq
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Department of Horticulture, The University of Agriculture Peshawar, Peshawar, 25130, Pakistan
| | - Abid Khan
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China
- Department of Horticulture, The University of Haripur, Haripur, 22620, Pakistan
| | - Rugang Chen
- College of Horticulture, Northwest A&F University, Yangling, 712100, Shaanxi, China.
- Shaanxi Engineering Research Center for Vegetables, Yangling, 712100, China.
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Penny J, Alves PBR, De-Silva Y, Chen AS, Djordjević S, Shrestha S, Babel M. Analysis of potential nature-based solutions for the Mun River Basin, Thailand. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 87:1496-1514. [PMID: 37001161 DOI: 10.2166/wst.2023.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Despite the growth in research and applications of nature-based solutions (NBS) within the literature, there are limited applications in South East Asia, moreover studies which quantitatively assess the impacts of NBS could have on hazard reduction are scarce. This paper addresses this gap by developing and validating MCDA-GIS analysis to map how potential nature strategies could mitigate flood hazard if applied within the Mun River Basin, Thailand. Through a literature review, the top three solutions for flood and drought hazards were found: wetlands, re/afforestation, and changing crop types. These strategies were reviewed and validated with a MCDA-GIS methodology, through land use change (LUC) maps to depict different future scenarios. The results found that flood hazard did decrease when NBS were implemented in the catchment, especially for A/Reforestation, and to a greater extent when a combination of NBS were applied. This article provides specific insights into the current gaps of NBS publications, specifically considering the case of the Mun River Basin, Thailand.
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Affiliation(s)
- Jessica Penny
- Centre for Water Systems, University of Exeter, Exeter, UK E-mail:
| | - Priscila B R Alves
- Stormwater Infrastructure Resilience and Justice (SIRJ) Lab, School of Architecture Planning and Preservation, University of Maryland, USA
| | - Yenushi De-Silva
- Centre for Water Systems, University of Exeter, Exeter, UK E-mail: ; Water Engineering and Management, School of Engineering and Technology, Asian Institute of Technology, Pathum Thani, Thailand
| | - Albert S Chen
- Centre for Water Systems, University of Exeter, Exeter, UK E-mail:
| | - Slobodan Djordjević
- Centre for Water Systems, University of Exeter, Exeter, UK E-mail: ; Faculty of Civil Engineering, University of Belgrade, 11000 Belgrade, Serbia
| | - Sangam Shrestha
- Water Engineering and Management, School of Engineering and Technology, Asian Institute of Technology, Pathum Thani, Thailand
| | - Mukand Babel
- Water Engineering and Management, School of Engineering and Technology, Asian Institute of Technology, Pathum Thani, Thailand
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Hassan HM, Hadifa AA, El-leithy SA, Batool M, Sherif A, Al-Ashkar I, Ueda A, Rahman MA, Hossain MA, Elsabagh A. Variable level of genetic dominance controls important agronomic traits in rice populations under water deficit condition. PeerJ 2023; 11:e14833. [PMID: 36815980 PMCID: PMC9933770 DOI: 10.7717/peerj.14833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 01/10/2023] [Indexed: 02/15/2023] Open
Abstract
Plant hybridization is an important breeding technique essential for producing a genotype (hybrid) with favorable traits (e.g., stress tolerance, pest resistance, high yield potential etc.) to increase agronomic, economic and commercial values. Studying of genetic dominance among the population helps to determine gene action, heritability and candidate gene selection for plant breeding program. Therefore, this investigation was aimed to evaluate gene action, heritability, genetic advance and heterosis of rice root, agronomic, and yield component traits under water deficit conditions. In this study, crossing was performed among the four different water-deficit tolerant rice genotypes to produce better hybrid (F1), segregating (F2) and back-cross (BC1 and BC2) populations. The Giza 178, WAB56-204, and Sakha104 × WAB56-104 populations showed the better physiological and agronomical performances, which provided better adaptability of the populations to water deficit condition. Additionally, the estimation of heterosis and heterobeltiosis of some quantitative traits in rice populations were also studied. The inheritance of all studied traits was influenced by additive gene actions. Dominance gene actions played a major role in controlling the genetic variance among studied traits in both crossed populations under well-watered and drought conditions. The additive × additive type of gene interactions was essential for the inheritance of root length, root/shoot ratio, 1,000-grain weight, and sterility % of two crossed populations under both conditions. On the contrary, the additive × dominance type of gene interactions was effective in the inheritance of all studied traits, except duration in Giza178 × Sakha106, and plant height in Sakha104 × WAB56-104 under water deficit condition. In both crosses, the dominance × dominance type of gene interactions was effective in the inheritance of root volume, root/shoot ratio, number of panicles/plant and 1,000-grain weight under both conditions. Moreover, dominance × dominance type of gene interaction played a major role in the inheritance of root length, number of roots/plant, plant height, panicle length, number of filled grain/panicle and grain yield/plant in Giza178 × Sakha106 under both conditions. The studied traits in both crossed populations indicated better genetic advance as they showed advanced qualitative and quantitative characters in rice populations under water deficit condition. Overall, our findings open a new avenue of future phenotypic and genotypic association studies in rice. These insights might be useful to the plant breeders and farmers for developing water deficit tolerant rice cultivars.
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Affiliation(s)
- Hamada M. Hassan
- Department of Rice Research, Field Crops Research Institute, Agricultural Research Center (ARC), Giza, Egypt
| | - Adel A. Hadifa
- Department of Rice Research, Field Crops Research Institute, Agricultural Research Center (ARC), Giza, Egypt
| | - Sara A. El-leithy
- Department of Rice Research, Field Crops Research Institute, Agricultural Research Center (ARC), Giza, Egypt
| | - Maria Batool
- College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, China
| | - Ahmed Sherif
- Department of Rice Research, Field Crops Research Institute, Agricultural Research Center (ARC), Giza, Egypt,College of Plant Science & Technology, Huazhong Agricultural University, Wuhan, China
| | - Ibrahim Al-Ashkar
- Department of Plant Production, College of Food and Agriculture, King Saud University, Riyadh, Saudi Arabia
| | - Akihiro Ueda
- Graduate School of Integrated Sciences for Life, Hiroshima University of Economics, Hiroshima, Japan
| | - Md Atikur Rahman
- Grassland and Forage Division, National Institute of Animal Science, Rural Development Administration, Cheonan, Republic of Korea
| | - Mohammad Anwar Hossain
- Department of Genetics and Plant Breeding, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Ayman Elsabagh
- Department of Agronomy, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Shaikh, Egypt
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da Mata CR, de Castro AP, Lanna AC, Bortolini JC, de Moraes MG. Physiological and yield responses of contrasting upland rice genotypes towards induced drought. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2023; 29:305-317. [PMID: 36875723 PMCID: PMC9981851 DOI: 10.1007/s12298-023-01287-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 11/18/2022] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
Drought alters rice morphophysiology and reduces grain yield. This study hypothesized that the combined analysis of morphophysiological and agronomic traits enables a systemic approach to responses to water deficit, allowing the selection of resistance markers to upland rice. The objectives were to evaluate the effects of water deficit applied at the reproductive stage in plant water status, leaf gas exchanges, leaf non-structural carbohydrate contents, and agronomic traits in upland rice genotypes; and to verify if the analyzed variables may be applied to group the genotypes according to their tolerance level. Water deficit was induced by irrigation suppression in eight genotypes at R2-R3. Physiological and biochemical traits were evaluated at the end of the water deficit period, thenceforth irrigation was restored until grain maturation for the analysis of the agronomic traits. Water deficit reduced: Ψw (63.64%, average); gs (28-90%); transpiration rate (40.63-65.45%); RWC from Serra Dourada to Esmeralda (43.36-61.48%); net CO2 assimilation from Serra Dourada to Primavera (70.04-99.91%); iWUE from Esmeralda to Primavera (83.98-99.85%); iCE in Esmeralda (99.92%); 100-grain weight in CIRAD and Soberana (13.65-20.63%); and grain yield from Primavera to IAC 164 (34.60-78.85%). Water deficit increased Ci from Cambará to Early mutant (79.64-215.23%), and did not affect the tiller number, shoot dry biomass, fructose, and sucrose contents. The alterations in the variables distinguished groups according to the water regime. RWC, Ψw, leaf gas exchanges, and iCE were valuable traits to distinguish the water regime treatments, but not to group the genotypes according to the drought tolerance level. Supplementary Information The online version contains supplementary material available at 10.1007/s12298-023-01287-8.
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Affiliation(s)
- Cristiane Ribeiro da Mata
- Programa de Pós-Graduação em Agronomia, Universidade Federal de Goiás, Av. Esperança s/n, Campus Samambaia, Goiânia, GO 74690-000 Brazil
| | - Adriano Pereira de Castro
- Embrapa Arroz e Feijão, Rodovia GO-462, Km 12, Zona Rural, Caixa Postal 179, Santo Antônio de Goiás, GO 75375-000 Brazil
| | - Anna Cristina Lanna
- Embrapa Arroz e Feijão, Rodovia GO-462, Km 12, Zona Rural, Caixa Postal 179, Santo Antônio de Goiás, GO 75375-000 Brazil
| | - Jascieli Carla Bortolini
- Embrapa Arroz e Feijão, Rodovia GO-462, Km 12, Zona Rural, Caixa Postal 179, Santo Antônio de Goiás, GO 75375-000 Brazil
| | - Moemy Gomes de Moraes
- Departamento de Botânica, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Av. Esperança s/n, Campus Samambaia, Goiânia, Goiás 74690-000 Brazil
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Mohapatra KK, Nayak AK, Patra RK, Tripathi R, Swain CK, Moharana KC, Kumar A, Shahid M, Mohanty S, Garnaik S, Nayak HS, Mohapatra S, Nagothu US, Tesfai M. Multi-criteria assessment to screen climate smart rice establishment techniques in coastal rice production system of India. FRONTIERS IN PLANT SCIENCE 2023; 14:1130545. [PMID: 37143878 PMCID: PMC10151676 DOI: 10.3389/fpls.2023.1130545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 03/23/2023] [Indexed: 05/06/2023]
Abstract
Introduction Conventional rice production techniques are less economical and more vulnerable to sustainable utilization of farm resources as well as significantly contributed GHGs to atmosphere. Methods In order to assess the best rice production system for coastal areas, six rice production techniques were evaluated, including SRI-AWD (system of rice intensification with alternate wetting and drying (AWD)), DSR-CF (direct seeded rice with continuous flooding (CF)), DSR-AWD (direct seeded rice with AWD), TPR-CF (transplanted rice with CF), TPR-AWD (transplanted rice with AWD), and FPR-CF (farmer practice with CF). The performance of these technologies was assessed using indicators such as rice productivity, energy balance, GWP (global warming potential), soil health indicators, and profitability. Finally, using these indicators, a climate smartness index (CSI) was calculated. Results and discussion Rice grown with SRI-AWD method had 54.8 % higher CSI over FPR-CF, and also give 24.5 to 28.3% higher CSI for DSR and TPR as well. There evaluations based on the climate smartness index can provide cleaner and more sustainable rice production and can be used as guiding principle for policy makers.
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Affiliation(s)
- Kiran Kumar Mohapatra
- Indian Council of Agricultural Research (ICAR) -National Rice Research Institute, Odisha, India
- Odisha University of Agriculture and Technology, Odisha, India
| | - A. K. Nayak
- Indian Council of Agricultural Research (ICAR) -National Rice Research Institute, Odisha, India
- *Correspondence: A. K. Nayak,
| | - R. K. Patra
- Odisha University of Agriculture and Technology, Odisha, India
| | - Rahul Tripathi
- Indian Council of Agricultural Research (ICAR) -National Rice Research Institute, Odisha, India
| | - Chinmaya Kumar Swain
- Indian Council of Agricultural Research (ICAR) -National Rice Research Institute, Odisha, India
| | - K. C. Moharana
- Indian Council of Agricultural Research (ICAR) -National Rice Research Institute, Odisha, India
| | - Anjani Kumar
- Indian Council of Agricultural Research (ICAR) -National Rice Research Institute, Odisha, India
| | - Mohammad Shahid
- Indian Council of Agricultural Research (ICAR) -National Rice Research Institute, Odisha, India
| | - Sangita Mohanty
- Indian Council of Agricultural Research (ICAR) -National Rice Research Institute, Odisha, India
| | - Saheed Garnaik
- Odisha University of Agriculture and Technology, Odisha, India
| | | | - Simran Mohapatra
- Indian Council of Agricultural Research (ICAR) -National Rice Research Institute, Odisha, India
| | | | - M. Tesfai
- Norwegian Institute of Bioeconomy Research, Oslo, Norway
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Sadiqi SSJ, Hong EM, Nam WH, Kim T. Review: An integrated framework for understanding ecological drought and drought resistance. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 846:157477. [PMID: 35870577 DOI: 10.1016/j.scitotenv.2022.157477] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 07/11/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
Droughts are a frequent natural phenomenon that has amplified globally in the 21st century and are projected to become more common and extreme in the future. Consequently, this affects the progress of drought indices and frameworks to categorize drought conditions. Several drought-related indices and variables are required to capture different features of complex drought conditions. Therefore, we explained the signs of progress of ecological drought that were ecologically expressive to promote the integration between the research on and identification of water scarcity situations and analyzed different frameworks to synthesize the drought effects on species and ecosystems. Notably, we present an inclusive review of an integrated framework for an ecological drought. The ecological drought framework affords the advantage of improved methodologies for assessing ecological drought. This is supported by research on water-limited ecosystems that incorporated several drought-related elements and indicators to produce an integrated drought framework. In this framework, we combined multiple studies on drought recovery, early warning signs, and the effects of land management interferences, along with a schematic representation of a new extension of the framework into ecological systems, to contribute to the success and long-term sustainability of ecological drought adaptation, as well as on-the-ground examples of climate-informed ecological drought management in action for an integrated framework for ecological drought. This study provides an integrated approach to the understanding of ecological drought in line with accelerated scientific advancement to promote persistence and plan for a future that irretrievably exceeds the ecosystem thresholds and new multivariate drought indices.
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Affiliation(s)
- Sayed Shah Jan Sadiqi
- Department of Environment Science, Kangwon National University, Chuncheon 24341, Republic of Korea.
| | - Eun-Mi Hong
- School of Natural Resources and Environmental Science, Kangwon National University, Chuncheon 24341, Republic of Korea.
| | - Won-Ho Nam
- School of Social Safety and Systems Engineering, Hankyong National University, Anseong 17579, Republic of Korea; Institute of Agricultural Environmental Science, Hankyong National University, Anseong 17579, Republic of Korea; National Agricultural Water Research Center, Hankyong National University, Anseong 17579, Republic of Korea.
| | - Taegon Kim
- Department of Smart Farm, Jeonbuk National University, Jeonju 54896, Republic of Korea.
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Mohammed AE, Alotaibi MO, Elobeid M. Interactive influence of elevated CO 2 and arbuscular mycorrhizal fungi on sucrose and coumarin metabolism in Ammi majus. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 185:45-54. [PMID: 35660776 DOI: 10.1016/j.plaphy.2022.05.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 04/26/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
The elevated level of CO2 (eCO2) and arbuscular mycorrhizal fungi (AMF) have been known as successful eco-friendly agents for plant growth and development as well as quality enhancers. The current investigation was designed to study the influence of eCO2 (620 μmol CO2 mol-1 air) and AMF on sucrose and phenylpropanoid metabolism, including coumarins, the most important bioactive metabolite in Ammi majus. eCO2 and AMF were applied, and different parameters have been assessed in A. majus such as changes in mycorrhizal colonization, plant biomass production, photosynthesis, and levels of N, P, and Ca besides the key metabolites and enzymes in sucrose and coumarins metabolic pathways. The present outcomes revealed that eCO2 and AMF individually or combined enhanced the plant biomass and photosynthesis as well as nutrient concentrations. Furthermore, the levels of sucrose, soluble sugars, glucose, fructose, and the activities of some key enzymes in their metabolism besides phenylpropanoids metabolites in shoot and root of A. majus have been enhanced by eCO2 and AMF especially when combined. Moreover, upregulation of sucrose is linked to phenylpropanoids metabolic pathway via upregulation of phenylalanine ammonia-lyase activity suggesting high coumarin biosynthesis. Generally, the synergistic effect of both treatments was noted for most of the investigated parameters compared to the individual effect. It could be concluded that the combined application of eCO2 and AMF affects A. majus global metabolism and induces accumulation of phyto-molecules, coumarin, which might improve its medicinal and pharmacological applications.
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Affiliation(s)
- Afrah E Mohammed
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia
| | - Modhi O Alotaibi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia.
| | - Mudawi Elobeid
- Department of silviculture, Faculty of Forestry, University of Khartoum, Shambat, Sudan
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Salman EK, Ghoniem KE, Badr ES, Emeran AA. The potential of dimetindene maleate inducing resistance to blast fungus Magnaporthe oryzae through activating the salicylic acid signaling pathway in rice plants. PEST MANAGEMENT SCIENCE 2022; 78:633-642. [PMID: 34661333 DOI: 10.1002/ps.6673] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Accepted: 10/18/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Rice blast disease (Magnaporthe oryzae) is considered the most destructive rice disease all over the world. Dimetindene maleate is used in medication against allergic reactions in humans. Dimetindene maleate used to induce systemic acquired resistance (SAR) in rice (Oryza sativa L.) in order to protect rice plants from blast disease. RESULTS Dimetindene maleate was not effective against fungus linear growth in vitro. In glasshouse conditions, dimetindene maleate significantly improved resistance at 25, 50, 125, 250, 500 and 1000 mg L-1 concentrations. Leaf blast severity reached 14.18% on plants treated with the most effective concentration of 125 mg L-1 compared with control plants. In field conditions during both seasons (2016 and 2017), 125 mg L-1 dimetindene maleate decreased the disease severity to 1.1% and 2.7%, respectively, after 30 days of treatment. Also, grain yield was increased to 13.27 and 12.90 t ha-1 in 2016 and 2017 seasons, respectively. Moreover, dimetindene maleate induces some of the indicators for salicylic acid and jasmonic acid pathways via gene expression. These genes include OsWRKY45, OsNPR1, AOS2, JAMYB and PBZ1 (OsPR10), recording 15.14-, 16.47-, 5.3-, 5.37- and 5.1-fold changes, respectively, 12-h postinoculation. CONCLUSION The results overview investigated the effectiveness of dimetindene maleate for increasing rice resistance to blast disease through inducing SAR in rice plants under glasshouse and field conditions, which could be through the SA defense pathway by expression of genes (OsWRKY45 and OsNPR1). © 2021 Society of Chemical Industry.
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Affiliation(s)
- Elgaly K Salman
- Rice Pathology Research Department, Plant Pathology Research Institute, Agricultural Research Center, Kafr El-Sheikh, Egypt
| | - Kamal E Ghoniem
- Department of Agricultural Botany, Faculty of Agriculture, Kafr El-Sheikh University, Kafr El-Sheikh, Egypt
| | - Elsayedalaa S Badr
- Rice Pathology Research Department, Plant Pathology Research Institute, Agricultural Research Center, Kafr El-Sheikh, Egypt
| | - Amero A Emeran
- Department of Agricultural Botany, Faculty of Agriculture, Kafr El-Sheikh University, Kafr El-Sheikh, Egypt
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Chen P, Zhi F, Li X, Shen W, Yan M, He J, Bao C, Fan T, Zhou S, Ma F, Guan Q. Zinc-finger protein MdBBX7/MdCOL9, a target of MdMIEL1 E3 ligase, confers drought tolerance in apple. PLANT PHYSIOLOGY 2022; 188:540-559. [PMID: 34618120 PMCID: PMC8774816 DOI: 10.1093/plphys/kiab420] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Accepted: 08/02/2021] [Indexed: 05/21/2023]
Abstract
Water deficit is one of the main challenges for apple (Malus × domestica) growth and productivity. Breeding drought-tolerant cultivars depends on a thorough understanding of the drought responses of apple trees. Here, we identified the zinc-finger protein B-BOX 7/CONSTANS-LIKE 9 (MdBBX7/MdCOL9), which plays a positive role in apple drought tolerance. The overexpression of MdBBX7 enhanced drought tolerance, whereas knocking down MdBBX7 expression reduced it. Chromatin immunoprecipitation-sequencing (ChIP-seq) analysis identified one cis-element of MdBBX7, CCTTG, as well as its known binding motif, the T/G box. ChIP-seq and RNA-seq identified 1,197 direct targets of MdBBX7, including ETHYLENE RESPONSE FACTOR (ERF1), EARLY RESPONSIVE TO DEHYDRATION 15 (ERD15), and GOLDEN2-LIKE 1 (GLK1) and these were further verified by ChIP-qPCR and electronic mobility shift assays. Yeast two-hybrid screen identified an interacting protein of MdBBX7, RING-type E3 ligase MYB30-INTERACTING E3 LIGASE 1 (MIEL1). Further examination revealed that MdMIEL1 could mediate the ubiquitination and degradation of MdBBX7 by the 26S proteasome pathway. Genetic interaction analysis suggested that MdMIEL1 acts as an upstream factor of MdBBX7. In addition, MdMIEL1 was a negative regulator of the apple drought stress response. Taken together, our results illustrate the molecular mechanisms by which the MdMIEL1-MdBBX7 module influences the response of apple to drought stress.
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Affiliation(s)
- Pengxiang Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Fang Zhi
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xuewei Li
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Wenyun Shen
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Mingjia Yan
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jieqiang He
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Chana Bao
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Tianle Fan
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Shuangxi Zhou
- The New Zealand Institute for Plant and Food Research Ltd., Hawke's Bay 4130, New Zealand
| | - Fengwang Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Qingmei Guan
- State Key Laboratory of Crop Stress Biology for Arid Areas/Shaanxi Key Laboratory of Apple, College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China
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Radha B, Sunitha NC, Sah RP, T P MA, Krishna GK, Umesh DK, Thomas S, Anilkumar C, Upadhyay S, Kumar A, Ch L N M, S B, Marndi BC, Siddique KHM. Physiological and molecular implications of multiple abiotic stresses on yield and quality of rice. FRONTIERS IN PLANT SCIENCE 2022; 13:996514. [PMID: 36714754 PMCID: PMC9874338 DOI: 10.3389/fpls.2022.996514] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 12/05/2022] [Indexed: 05/12/2023]
Abstract
Abiotic stresses adversely affect rice yield and productivity, especially under the changing climatic scenario. Exposure to multiple abiotic stresses acting together aggravates these effects. The projected increase in global temperatures, rainfall variability, and salinity will increase the frequency and intensity of multiple abiotic stresses. These abiotic stresses affect paddy physiology and deteriorate grain quality, especially milling quality and cooking characteristics. Understanding the molecular and physiological mechanisms behind grain quality reduction under multiple abiotic stresses is needed to breed cultivars that can tolerate multiple abiotic stresses. This review summarizes the combined effect of various stresses on rice physiology, focusing on grain quality parameters and yield traits, and discusses strategies for improving grain quality parameters using high-throughput phenotyping with omics approaches.
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Affiliation(s)
- Beena Radha
- Department of Plant Physiology, Kerala Agricultural University-College of Agriculture, Vellayani, Thiruvananthapuram, Kerala, India
| | | | - Rameswar P Sah
- Division of Crop Production, Indian Council of Agricultural Research-National Rice Research Institute, Cuttack, Odisha, India
| | - Md Azharudheen T P
- Division of Crop Production, Indian Council of Agricultural Research-National Rice Research Institute, Cuttack, Odisha, India
| | - G K Krishna
- Department of Plant Physiology, Kerala Agricultural University-College of Agriculture, Thrissur, Kerala, India
| | - Deepika Kumar Umesh
- Mulberry Breeding & Genetics Section, Central Sericultural Research and Training Institute-Berhampore, Central Silk Board, Murshidabad, West Bengal, India
| | - Sini Thomas
- Department of Plant Physiology, Kerala Agricultural University-Regional Agricultural Research Station, Kumarakom, Kerala, India
| | - Chandrappa Anilkumar
- Division of Crop Production, Indian Council of Agricultural Research-National Rice Research Institute, Cuttack, Odisha, India
| | - Sameer Upadhyay
- Division of Crop Production, Indian Council of Agricultural Research-National Rice Research Institute, Cuttack, Odisha, India
| | - Awadhesh Kumar
- Division of Crop Production, Indian Council of Agricultural Research-National Rice Research Institute, Cuttack, Odisha, India
| | - Manikanta Ch L N
- Department of Plant Physiology, Indira Gandhi Krishi Vishwavidyalaya, Raipur, India
| | - Behera S
- Division of Crop Production, Indian Council of Agricultural Research-National Rice Research Institute, Cuttack, Odisha, India
| | - Bishnu Charan Marndi
- Division of Crop Production, Indian Council of Agricultural Research-National Rice Research Institute, Cuttack, Odisha, India
| | - Kadambot H M Siddique
- The University of Western Australia Institute of Agriculture, The University of Western Australia, Perth, WA, Australia
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15
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Drought Stress Impacts on Plants and Different Approaches to Alleviate Its Adverse Effects. PLANTS 2021; 10:plants10020259. [PMID: 33525688 PMCID: PMC7911879 DOI: 10.3390/plants10020259] [Citation(s) in RCA: 260] [Impact Index Per Article: 86.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/14/2021] [Accepted: 01/18/2021] [Indexed: 12/20/2022]
Abstract
Drought stress, being the inevitable factor that exists in various environments without recognizing borders and no clear warning thereby hampering plant biomass production, quality, and energy. It is the key important environmental stress that occurs due to temperature dynamics, light intensity, and low rainfall. Despite this, its cumulative, not obvious impact and multidimensional nature severely affects the plant morphological, physiological, biochemical and molecular attributes with adverse impact on photosynthetic capacity. Coping with water scarcity, plants evolve various complex resistance and adaptation mechanisms including physiological and biochemical responses, which differ with species level. The sophisticated adaptation mechanisms and regularity network that improves the water stress tolerance and adaptation in plants are briefly discussed. Growth pattern and structural dynamics, reduction in transpiration loss through altering stomatal conductance and distribution, leaf rolling, root to shoot ratio dynamics, root length increment, accumulation of compatible solutes, enhancement in transpiration efficiency, osmotic and hormonal regulation, and delayed senescence are the strategies that are adopted by plants under water deficit. Approaches for drought stress alleviations are breeding strategies, molecular and genomics perspectives with special emphasis on the omics technology alteration i.e., metabolomics, proteomics, genomics, transcriptomics, glyomics and phenomics that improve the stress tolerance in plants. For drought stress induction, seed priming, growth hormones, osmoprotectants, silicon (Si), selenium (Se) and potassium application are worth using under drought stress conditions in plants. In addition, drought adaptation through microbes, hydrogel, nanoparticles applications and metabolic engineering techniques that regulate the antioxidant enzymes activity for adaptation to drought stress in plants, enhancing plant tolerance through maintenance in cell homeostasis and ameliorates the adverse effects of water stress are of great potential in agriculture.
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Abstract
Bangladesh produces only 5% of the cotton she needs to sustain her readymade garments industries. The country has very limited agricultural land and cotton competes with other crops for this scarce land resource. On top of that, Bangladesh is regarded as a country where agriculture is highly vulnerable to the variabilities of weather patterns that result from climate change. Against this backdrop, to better understand the potential for the sustainable expansion of cotton production in Bangladesh, we examine cotton’s agricultural value chain and projected climate risks associated with different phases of the chain. We identified associated stakeholders at different phases of cotton production, engaged with them to understand climatic and non-climatic threats and developed an integrated set of recommendations for climate-risk management through improving the connection of producers to markets, increasing economic returns to small farmers, and improving efficiency along the value chain. We discussed our estimated climate projections with stakeholders to understand the challenges at different stages of production and marketing, and together explored and identified probable solutions. This research offers a new and evolving approach to assess climate change impact on agriculture utilizing a holistic approach, which could be adopted for other crops.
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Harun SN, Hanafiah MM, Aziz NIHA. An LCA-Based Environmental Performance of Rice Production for Developing a Sustainable Agri-Food System in Malaysia. ENVIRONMENTAL MANAGEMENT 2021; 67:146-161. [PMID: 33001258 DOI: 10.1007/s00267-020-01365-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 09/15/2020] [Indexed: 06/11/2023]
Abstract
This study aims to assess the environmental impacts of conventional and organic rice cultivations and proposes a sustainable conceptual framework of rice farming based on the life cycle assessment (LCA) approach. A cradle-to-gate LCA was performed by using the ReCiPe 2016 method and SimaPro 8.5 software. The functional unit was one ton of rice grains harvested. Primary data were obtained from the farmer, while secondary data were collected from Ecoinvent 3.0, the Agri Footprint 3.0 database and the literature. The total characterization factors for global warming potential (GWP), water consumption potential (WCP) and fossil fuel depletion potential (FFP) were 457.89 kg CO2-eq, 98.18 m3 and 84.56 kg oil-eq, respectively, at the midpoint level for conventional rice, while the impacts for organic rice were 140.55 kg CO2-eq, 29.45 m3 and 22.25 kg oil-eq, respectively. At the endpoint level, the total characterization factors for human health damage (HH), ecosystem damage (ED) and resource availability (RA) for conventional rice were 9.63 × 10-4 DALY, 5.54 × 10-6 species.year and 30.98 Dollar, respectively, while for organic rice, the impacts were 2.60 × 10-4 DALY, 2.28 × 10-6 species.year and 8.44 Dollar, respectively. Rice cultivation impacted the environment, particularly in relation to three impact categories: GWP, WCP and FFP. The cultivation phase of rice production was the main contributor to environmental impacts due to the production and application of fertilizer and pesticides. It can be concluded that the application of LCA in agricultural sector is able to provide information and responses for policy makers in understanding the potential environmental impacts at various spatial levels.
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Affiliation(s)
- Siti Norliyana Harun
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Marlia M Hanafiah
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia.
- Centre for Tropical Climate Change System, Institute of Climate Change, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia.
| | - Nur Izzah Hamna Abd Aziz
- Department of Earth Sciences and Environment, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
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Peter Mantilen Ludong D, Nanlohy FN, Ai Nio S. Physiological Responses to Drought in Six Rice (<i>Oryza sativa </i>L.) Cultivars Cultivated in North Sulawesi, Indonesia. Pak J Biol Sci 2020; 23:1666-1675. [PMID: 33274901 DOI: 10.3923/pjbs.2020.1666.1675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND AND OBJECTIVE The drought-tolerant crop plants, including rice, are required for fulfilling food requirements when drought occurs in Indonesia. The response to drought stress in rice cultivars could be studied based on the morphological, anatomical and physiological characteristics. This study evaluated the drought tolerance based on the physiological characteristics at the vegetative phase in six rice cultivars cultivated in North Sulawesi, Indonesia. MATERIALS AND METHODS The Completely Randomized Design experiment was conducted in the greenhouse by using six rice cultivars (cv. Superwin, Sultan, Ciherang, Serayu, Cigeulis and IR 64) grown in the soil mixture at the vegetative phase. The treatments in this experiment were water deficit (without water for up to 22 days) and well-watered (watering until field capacity). The evaluated physiological characteristics consisted of leaf water content, leaf relative water content, concentrations of chlorophylls (total, a and b) at 0, 7, 14, 17 and 22 days after treatment. RESULTS Withholding water for 22 days at the vegetative phase resulted in a decrease of water content and the increase of concentration of chlorophylls (total, a and b) in leaf. There were two categories of drought tolerance in rice observed in this study, i.e. semi tolerant for Cigeulis, Superwin, Serayu, IR 64, Sultan and non-tolerant for Ciherang. CONCLUSION Rice cv. Cigeulis, Superwin, Serayu, IR 64 and Sultan were semi tolerant, whereas cv. Ciherang was non-tolerant rice cultivar. Leaf water content was a potential physiological indicator for drought tolerance in rice.
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Short-term soil drying-rewetting effects on respiration rate and microbial biomass carbon and phosphorus in a 60-year paddy soil. 3 Biotech 2020; 10:492. [PMID: 33134010 DOI: 10.1007/s13205-020-02486-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 10/13/2020] [Indexed: 10/23/2022] Open
Abstract
Paddy soils represent the largest anthropogenic wetlands on earth. Soil drying and rewetting that occurs annually inflict significant stress on soil microbial activities in paddy soils. An incubation experiment of 60 years of paddy soil was conducted to simulate the conditions of paddy fields (25 °C and 75% air humidity) during a 16-day incubation time. The effect of drying-rewetting [DRW, with 4 levels: (1) constant soil moisture (CSM), (2) one-stage drought stress (DRW1), (3) two-stage drought stress (DRW2), and (4) three-stage drought stress (DRW3)] and how it evolves over 0, 4, 8. 12, and 16 days after incubation on the concentration of available phosphorus (AP), microbial biomass P (MBP) and microbial biomass C (MBC), and respiration rate (RES) was determined using repeated measures analysis (RMA). The results revealed that an increase in the number of drying-rewetting increases MBC and RES. Compared to CSM, frequent drying and rewetting caused an increase in RES, MBC and MBP by 88%, 38%, and 11%, respectively. Drying-rewetting increased microbial biomass C (MBC) and P (MBP) by 24-38% and 11-54%, respectively, during 8-16 days of incubation. Increasing the number of DRW cycles reduced AP concentration (except in DRW1). The decrease in available phosphorus is due to the increase in the intensity of immobilization under these conditions. Positive correlations were also observed between AP and MBP (r = 0.52), and between RES and MBC (r = 0.91). In general, the frequency of moisture in the paddy soil is favorable for increasing microbial activity.
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Darzi-Naftchali A, Bagherian-Jelodar M, Mashhadi-Kholerdi F, Abdi-Moftikolaei M. Assessing socio-environmental sustainability at the level of irrigation and drainage network. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 731:138927. [PMID: 32434097 DOI: 10.1016/j.scitotenv.2020.138927] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/20/2020] [Accepted: 04/21/2020] [Indexed: 05/22/2023]
Abstract
Assessing pre- vs. post environmental and social effects of present irrigation projects is vital to provide sustainable socio-environmental roadmaps for the upcoming similar development projects. Such sustainability was assessed for the first time in the present study at a 20- year old irrigation and drainage network (TIDN) area in the north of Iran covering about 70 thousands ha. A 32- year period data on groundwater level and surface- and groundwater quality as well as data on harvested area and crop production was analyzed to evaluate environmental sustainability. Inverse distance weighting (IDW) method was used to prepare the zoning maps and to analyze the descriptive data. Social response to the TIDN was assessed using a cross-sectional survey through completing a questionnaire. The raw data obtained from the questionnaires were analyzed using SPSS software. During the operation of the TIDN, the cropping area increased gradually from about 34,000 ha to about 53,000 ha. In this period, the average yield of early- and late- matured rice (Oryza sativa L.) varieties, predominant crops grown in the area, increased steadily from about 5300 to 6700 kg ha-1. Groundwater table depth declined gradually with an annual reduction of 7.5 cm mainly due to agricultural intensification. Groundwater quality parameters such as electrical conductivity, total dissolved solids, sodium, chloride, bicarbonate and magnesium decreased substantially especially in the semi- deep wells, while nitrate concentration showed a little increase without human effects. The TIDN project improved rural sustainability, hope feeling, security feeling, tourism development, cultural development, trust, social solidarity, social participation and life quality. The results indicate that similar comprehensive analyses can provide an important contribution to assess socio- environmental sustainability in irrigated catchments.
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Affiliation(s)
- Abdullah Darzi-Naftchali
- Water Engineering Department, Sari Agricultural Sciences and Natural Resources University, Sari, Iran.
| | | | - Farhad Mashhadi-Kholerdi
- Water Engineering Department, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
| | - Maryam Abdi-Moftikolaei
- Water Engineering Department, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
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Khanam R, Kumar A, Nayak AK, Shahid M, Tripathi R, Vijayakumar S, Bhaduri D, Kumar U, Mohanty S, Panneerselvam P, Chatterjee D, Satapathy BS, Pathak H. Metal(loid)s (As, Hg, Se, Pb and Cd) in paddy soil: Bioavailability and potential risk to human health. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 699:134330. [PMID: 31522043 DOI: 10.1016/j.scitotenv.2019.134330] [Citation(s) in RCA: 131] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 09/03/2019] [Accepted: 09/05/2019] [Indexed: 05/04/2023]
Abstract
Rice is one of the principal staple foods, essential for safeguarding the global food and nutritional security, but due to different natural and anthropogenic sources, it also acts as one of the biggest reservoirs of potentially toxic metal(loids) like As, Hg, Se, Pb and Cd. This review summarizes mobilization, translocation and speciation mechanism of these metal(loids) in soil-plant continuum as well as available cost-effective remediation measures and future research needs to eliminate the long-term risk to human health. High concentrations of these elements not only cause toxicity problems in plants, but also in animals that consume them and gradual deposition of these elements leads to the risk of bioaccumulation. The extensive occurrence of contaminated rice grains globally poses substantial public health risk and merits immediate action. People living in hotspots of contamination are exposed to higher health risks, however, rice import/export among different countries make the problem of global concern. Accumulation of As, Hg, Se, Pb and Cd in rice grains can be reduced by reducing their bioavailability, and controlling their uptake by rice plants. The contaminated soils can be reclaimed by phytoremediation, bioremediation, chemical amendments and mechanical measures; however these methods are either too expensive and/or too slow. Integration of innovative agronomic practices like crop establishment methods and improved irrigation and nutrient management practices are important steps to help mitigate the accumulation in soil as well as plant parts. Adoption of transgenic techniques for development of rice cultivars with low accumulation in edible plant parts could be a realistic option that would permit rice cultivation in soils with high bioavailability of these metal(loid)s.
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Affiliation(s)
- Rubina Khanam
- ICAR - National Rice Research Institute, Cuttack, Odisha, India
| | - Anjani Kumar
- ICAR - National Rice Research Institute, Cuttack, Odisha, India
| | - A K Nayak
- ICAR - National Rice Research Institute, Cuttack, Odisha, India.
| | - Md Shahid
- ICAR - National Rice Research Institute, Cuttack, Odisha, India
| | - Rahul Tripathi
- ICAR - National Rice Research Institute, Cuttack, Odisha, India
| | - S Vijayakumar
- ICAR - National Rice Research Institute, Cuttack, Odisha, India
| | | | - Upendra Kumar
- ICAR - National Rice Research Institute, Cuttack, Odisha, India
| | - Sangita Mohanty
- ICAR - National Rice Research Institute, Cuttack, Odisha, India
| | - P Panneerselvam
- ICAR - National Rice Research Institute, Cuttack, Odisha, India
| | | | - B S Satapathy
- ICAR - National Rice Research Institute, Cuttack, Odisha, India
| | - H Pathak
- ICAR - National Rice Research Institute, Cuttack, Odisha, India
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22
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Panneerselvam P, Sahoo S, Senapati A, Kumar U, Mitra D, Parameswaran C, Anandan A, Kumar A, Jahan A, Nayak AK. Understanding interaction effect of arbuscular mycorrhizal fungi in rice under elevated carbon dioxide conditions. J Basic Microbiol 2019; 59:1217-1228. [PMID: 31613012 DOI: 10.1002/jobm.201900294] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 08/31/2019] [Accepted: 09/18/2019] [Indexed: 11/07/2022]
Abstract
Arbuscular mycorrhizal fungi (AMF), particularly the Glomerales group, play a paramount role in plant nutrient uptake, and abiotic and biotic stress management in rice, but recent evidence revealed that elevated CO2 concentration considerably reduces the Glomerales group in soil. In view of this, the present study was initiated to understand the interaction effect of native Glomerales species application in rice plants (cv. Naveen) under elevated CO2 concentrations (400 ± 10, 550 ± 20, and 700 ± 20 ppm) in open-top chambers. Three different modes of application of the AMF inoculum were evaluated, of which, combined application of AMF at the seedling production and transplanting stages showed increased AMF colonization, which significantly improved grain yield by 25.08% and also increased uptake of phosphorus by 18.2% and nitrogen by 49.5%, as observed at 700-ppm CO2 concentration. Organic acids secretion in rice root increased in AMF-inoculated plants exposed to 700-ppm CO2 concentration. To understand the overall effect of CO2 elevation on AMF interaction with the rice plant, principal component and partial least square regression analysis were performed, which found both positive and negative responses under elevated CO2 concentration.
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Affiliation(s)
| | - Sowarnalisha Sahoo
- Crop Production Division, ICAR-National Rice Research Institute, Cuttack, India
| | - Ansuman Senapati
- Crop Production Division, ICAR-National Rice Research Institute, Cuttack, India
| | - Upendra Kumar
- Crop Production Division, ICAR-National Rice Research Institute, Cuttack, India
| | - Debasis Mitra
- Crop Production Division, ICAR-National Rice Research Institute, Cuttack, India
| | | | - Annamalai Anandan
- Crop Improvement Division, ICAR-National Rice Research Institute, Cuttack, India
| | - Anjani Kumar
- Crop Production Division, ICAR-National Rice Research Institute, Cuttack, India
| | - Afrin Jahan
- Crop Production Division, ICAR-National Rice Research Institute, Cuttack, India
| | - Amaresh Kumar Nayak
- Crop Production Division, ICAR-National Rice Research Institute, Cuttack, India
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23
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Nayak M, Swain DK, Sen R. Strategic valorization of de-oiled microalgal biomass waste as biofertilizer for sustainable and improved agriculture of rice (Oryza sativa L.) crop. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 682:475-484. [PMID: 31128367 DOI: 10.1016/j.scitotenv.2019.05.123] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 05/08/2019] [Accepted: 05/09/2019] [Indexed: 05/12/2023]
Abstract
Intensive use of chemical fertilizer results in environmental pollution that disturbs the local ecosystem and causes reduction in the long-term crop yield. There is a need to explore the alternative source of plant nutrition such as de-oiled microalgal biomass as biofertilizer for sustainable production of food crops in a relatively pollution free environment. This study reports sustainable and improved agriculture of rice crop (cv. IR 36) by valorizing de-oiled microalgal biomass waste (DOMBW) of Scenedesmus sp., as eco-friendly fertilizer. The microalga (MA) was cultivated in open raceway pond using wastewater and flue gas. Performance evaluation and comparison of DOMBW with respect to growth and yield of rice plants vis-à-vis commercial chemical fertilizers (CF) and vermicompost (VC) applied individually or together, established the superiority of the former. The experiment comprised of five nutrient management treatments (CF100, VC100, MA100, MA50+CF50, and MA50+VC50) meeting 100% nitrogen (N) recommendation either through a single source or combined application in the soil. Combining the application of microalgal based organic fertilizer with chemical fertilizer (MA50+CF50), showed the highest performance in terms of plant height, tiller number, biomass, and grain yield. At the harvest stage, MA50+CF50 also resulted in maximum plant dry weight, panicle weight, and 1000-grain weight in comparison to other treatments. This study revealed that the application of DOMBW as a biofertilizer is potentially sustainable and effective in improving the yields of rice crop with reduced use of chemical fertilizer.
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Affiliation(s)
- Manoranjan Nayak
- Department of Biotechnology, Indian Institute of Technology Kharagpur, West Bengal 721302, India.
| | - Dillip Kumar Swain
- Agricultural and Food Engineering Department, Indian Institute of Technology Kharagpur, West Bengal 721302, India.
| | - Ramkrishna Sen
- Department of Biotechnology, Indian Institute of Technology Kharagpur, West Bengal 721302, India.
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24
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Kumar U, Kaviraj M, Panneerselvam P, Priya H, Chakraborty K, Swain P, Chatterjee SN, Sharma SG, Nayak PK, Nayak AK. Ascorbic acid formulation for survivability and diazotrophic efficacy of Azotobacter chroococcum Avi2 (MCC 3432) under hydrogen peroxide stress and its role in plant-growth promotion in rice (Oryza sativa L.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 139:419-427. [PMID: 30986643 DOI: 10.1016/j.plaphy.2019.04.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 04/01/2019] [Accepted: 04/02/2019] [Indexed: 06/09/2023]
Abstract
Oxidative stress generates reactive oxygen species which causes cell damage of living organisms and are normally detoxified by antioxidants. Indirect reports signify the damages caused by reactive oxygen species and neutralized by antioxidant, but the direct evidence to confirm this hypothesis is still unclear. To validate our hypothesis, an attempt was made in a diazotrophic bacterium (Azotobacter chroococcum Avi2) as a biological system, and hydrogen peroxide (H2O2) and ascorbic acid were used as oxidative stress and antioxidant supplement, respectively. Additionally, rice plant-growth attributes by Avi2 was also assessed under H2O2 and ascorbic acid. Results indicated that higher concentration of H2O2 (2.5 mM-4.5 mM) showed the complete mortality of Avi2, whereas one ppm ascorbic acid neutralized the effect of H2O2. Turbidity, colony forming unit, DNA quantity, nifH gene abundance, indole acetic acid and ammonia productions were significantly (p < 0.5) increased by 11.93%, 17.29%, 19.80%, 74.77%, 71.89%, and 42.53%, respectively in Avi2-treated with 1.5 mM H2O2 plus ascorbic acid compared to 1.5 mM H2O2 alone. Superoxide dismutase was significantly (p < 0.5) increased by 60.85%, whereas catalase and ascorbate peroxidase activities were significantly (p < 0.05) decreased by 64.28% and 68.88% in Avi2-treated with 1.5 mM H2O2 plus ascorbic acid compared to 1.5 mM H2O2 alone. Germination percentage of three rice cultivars (FR13a, Naveen and Sahbhagi dhan) were significantly (p < 0.5) increased by 20%, 13.33%, and 4%, respectively in Avi2-treated with 0.6 mM H2O2 plus ascorbic acid compared with uninoculated control. Overall, this study indicated that ascorbic acid formulation neutralizes the H2O2-oxidative stress and enhances the survivability and plant growth-promoting efficacy of A. chroococcum Avi2 and therefore, it may be used as an effective formulation of bio-inoculants in rice under oxidative stress.
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Affiliation(s)
- Upendra Kumar
- ICAR- National Rice Research Institute, Cuttack, Odisha, 753006, India.
| | - Megha Kaviraj
- ICAR- National Rice Research Institute, Cuttack, Odisha, 753006, India
| | - P Panneerselvam
- ICAR- National Rice Research Institute, Cuttack, Odisha, 753006, India
| | - Himani Priya
- ICAR- National Rice Research Institute, Cuttack, Odisha, 753006, India
| | | | - P Swain
- ICAR- National Rice Research Institute, Cuttack, Odisha, 753006, India
| | | | - S G Sharma
- ICAR- National Rice Research Institute, Cuttack, Odisha, 753006, India
| | - P K Nayak
- ICAR- National Rice Research Institute, Cuttack, Odisha, 753006, India
| | - A K Nayak
- ICAR- National Rice Research Institute, Cuttack, Odisha, 753006, India
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25
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Nie T, Zhang Z, Qi Z, Chen P, Sun Z, Liu X. Characterizing Spatiotemporal Dynamics of CH₄ Fluxes from Rice Paddies of Cold Region in Heilongjiang Province under Climate Change. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16050692. [PMID: 30813633 PMCID: PMC6427409 DOI: 10.3390/ijerph16050692] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 02/14/2019] [Accepted: 02/21/2019] [Indexed: 12/04/2022]
Abstract
Paddy fields have become a major global anthropogenic CH4 emission source, and climate change affects CH4 emissions from paddy ecosystems by changing crop growth and the soil environment. It has been recognized that Heilongjiang Province has become an important source of CH4 emission due to its dramatically increased rice planting area, while less attention has been paid to characterize the effects of climate change on the spatiotemporal dynamics of CH4 fluxes. In this study, we used the calibrated and validated Long Ashton Research Station Weather Generator (LARS-WG) model and DeNitrification-DeComposition (DNDC) model to simulate historical and future CH4 fluxes under RCP 4.5 and RCP 8.5 of four global climate models (GCMs) in Heilongjiang Province. During 1960–2015, the average CH4 fluxes and climatic tendencies were 145.56 kg C/ha and 11.88 kg C/ha/(10a), respectively. Spatially, the CH4 fluxes showed a decreasing trend from west to east, and the climatic tendencies in the northern and western parts were higher. During 2021–2080, the annual average CH4 fluxes under RCP 4.5 and RCP 8.5 were predicted to be 213.46 kg C/ha and 252.19 kg C/ha, respectively, and their spatial distributions were similar to the historical distribution. The average climatic tendencies were 13.40 kg C/ha/(10a) and 29.86 kg C/ha/(10a), respectively, which decreased from west to east. The simulation scenario analysis showed that atmospheric CO2 concentration and temperature affected CH4 fluxes by changing soil organic carbon (SOC) content and plant biomass. This study indicated that a paddy ecosystem in a cold region is an important part of China’s greenhouse gas emission inventory in future scenarios.
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Affiliation(s)
- Tangzhe Nie
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China.
- Key Laboratory of Agricultural Water Resource Use, Ministry of Agriculture, Harbin 150030, China.
| | - Zhongxue Zhang
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China.
- Key Laboratory of Agricultural Water Resource Use, Ministry of Agriculture, Harbin 150030, China.
| | - Zhijuan Qi
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China.
- Key Laboratory of Agricultural Water Resource Use, Ministry of Agriculture, Harbin 150030, China.
| | - Peng Chen
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China.
- Key Laboratory of Agricultural Water Resource Use, Ministry of Agriculture, Harbin 150030, China.
| | - Zhongyi Sun
- Graduate School of Agriculture, Hokkaido University, Sapporo 060-8589, Japan.
| | - Xingchao Liu
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China.
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