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Carbas B, Barros S, Freitas A, Silva AS, Brites C. Comparative Analysis of Maize Physico-Chemical Parameters and Mycotoxin Levels in Dual Environments. Toxins (Basel) 2024; 16:275. [PMID: 38922169 PMCID: PMC11209266 DOI: 10.3390/toxins16060275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 06/13/2024] [Accepted: 06/14/2024] [Indexed: 06/27/2024] Open
Abstract
Maize (Zea mays L.) stands as a vital staple food globally, holding significant nutritional and economic value. However, its susceptibility to mycotoxin contamination under stressful environmental conditions poses a considerable concern. This study aimed to assess the quality and pasting characteristics of maize varieties across two distinct regions and examine the occurrence of mycotoxins influenced by climatic factors. Five maize varieties were cultivated in triplicate in the Golegã and Coruche regions. The nutritional composition (protein, fat, fiber, ash, starch, and lutein), pasting properties, and mycotoxin levels were evaluated. A statistical analysis revealed notable differences in the nutritional profiles of the maize varieties between the two regions, particularly in the protein and lutein content. The peak viscosity ranged from 6430 to 8599 cP and from 4548 to 8178 cP in the maize varieties from the Coruche and Golegã regions, respectively. Additionally, a significant correlation was observed between the climatic conditions and the grain nutritional quality components (p < 0.05). The M variety showed the highest ash content, protein content, final viscosity, and setback viscosity and the lowest peak viscosity. The Y variety revealed the lowest fat, fiber, and lutein content and the maximum peak viscosity. The incidence of mycotoxins was notably higher in the varieties from Coruche, which was potentially attributable to higher temperatures and lower precipitation levels leading to more frequent drought conditions. Fumonisin B1 was detected in 58% of the varieties from Coruche and 33% of the samples from Golegã, while deoxynivalenol was found in 87% and 80% of the varieties from Coruche and Golegã, respectively. The H variety, which was harvested in Coruche, exhibited the highest number of fumonisins and higher amounts of protein, lutein, and fat, while fumonisins were not detected in the Golegã region, which was potentially influenced by the precipitation levels. The K variety revealed higher protein and lutein contents, a lower amount of fat, excellent pasting properties (a higher peak viscosity and holding strength and a lower peak time), and no fumonisins B1 or B2. This variety may be considered well adapted to higher temperatures and drier conditions, as verified in the Coruche region. In conclusion, our study underscored the profound impact of environmental factors on the quality and occurrence of mycotoxins in maize varieties.
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Affiliation(s)
- Bruna Carbas
- National Institute for Agricultural and Veterinary Research (INIAV), I.P., Av. Da República, Quinta do Marquês, 2780-157 Oeiras, Portugal; (B.C.); (S.B.); (A.F.); (A.S.S.)
- Centro de Investigação de Montanha (CIMO), Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal
| | - Sílvia Barros
- National Institute for Agricultural and Veterinary Research (INIAV), I.P., Av. Da República, Quinta do Marquês, 2780-157 Oeiras, Portugal; (B.C.); (S.B.); (A.F.); (A.S.S.)
| | - Andreia Freitas
- National Institute for Agricultural and Veterinary Research (INIAV), I.P., Av. Da República, Quinta do Marquês, 2780-157 Oeiras, Portugal; (B.C.); (S.B.); (A.F.); (A.S.S.)
| | - Ana Sanches Silva
- National Institute for Agricultural and Veterinary Research (INIAV), I.P., Av. Da República, Quinta do Marquês, 2780-157 Oeiras, Portugal; (B.C.); (S.B.); (A.F.); (A.S.S.)
- Faculty of Pharmacy, Coimbra, Azinhaga de Santa Comba, University of Coimbra, 3000-548 Coimbra, Portugal
- Centre for Animal Science Studies (CECA), University of Porto, 4050-453 Porto, Portugal
| | - Carla Brites
- National Institute for Agricultural and Veterinary Research (INIAV), I.P., Av. Da República, Quinta do Marquês, 2780-157 Oeiras, Portugal; (B.C.); (S.B.); (A.F.); (A.S.S.)
- GREEN-IT Bioresources for Sustainability, ITQB NOVA, Av. da República, 2780-157 Oeiras, Portugal
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Du S, Xiong W. Weather Extremes Shock Maize Production: Current Approaches and Future Research Directions in Africa. PLANTS (BASEL, SWITZERLAND) 2024; 13:1585. [PMID: 38931017 PMCID: PMC11207875 DOI: 10.3390/plants13121585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 05/31/2024] [Accepted: 06/04/2024] [Indexed: 06/28/2024]
Abstract
Extreme weather events have led to widespread yield losses and significant global economic damage in recent decades. African agriculture is particularly vulnerable due to its harsh environments and limited adaptation capacity. This systematic review analyzes 96 articles from Web of Science, Science Direct, and Google Scholar, focusing on biophysical studies related to maize in Africa and worldwide. We investigated the observed and projected extreme weather events in Africa, their impacts on maize production, and the approaches used to assess these effects. Our analysis reveals that drought, heatwaves, and floods are major threats to African maize production, impacting yields, suitable cultivation areas, and farmers' livelihoods. While studies have employed various methods, including field experiments, statistical models, and process-based modeling, African research is often limited by data gaps and technological constraints. We identify three main gaps: (i) lack of reliable long-term experimental and empirical data, (ii) limited access to advanced climate change adaptation technologies, and (iii) insufficient knowledge about specific extreme weather patterns and their interactions with management regimes. This review highlights the urgent need for targeted research in Africa to improve understanding of extreme weather impacts and formulate effective adaptation strategies. We advocate for focused research on data collection, technology transfer, and integration of local knowledge with new technologies to bolster maize resilience and food security in Africa.
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Affiliation(s)
- Shaolong Du
- College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China;
| | - Wei Xiong
- International Maize and Wheat Improvement Center, Zhengzhou 450046, China
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3
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Zhang Y, Li J, Li W, Gao X, Xu X, Zhang C, Yu S, Dou Y, Luo W, Yu L. Transcriptome Analysis Reveals POD as an Important Indicator for Assessing Low-Temperature Tolerance in Maize Radicles during Germination. PLANTS (BASEL, SWITZERLAND) 2024; 13:1362. [PMID: 38794432 PMCID: PMC11125230 DOI: 10.3390/plants13101362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 05/09/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024]
Abstract
Low-temperature stress (TS) limits maize (Zea mays L.) seed germination and agricultural production. Exposure to TS during germination inhibits radicle growth, triggering seedling emergence disorders. Here, we aimed to analyse the changes in gene expression in the radicles of maize seeds under TS by comparing Demeiya1 (DMY1) and Zhengdan958 (ZD958) (the main Northeast China cultivars) and exposing them to two temperatures: 15 °C (control) and 5 °C (TS). TS markedly decreased radicle growth as well as fresh and dry weights while increasing proline and malondialdehyde contents in both test varieties. Under TS treatment, the expression levels of 5301 and 4894 genes were significantly different in the radicles of DMY1 and ZD958, respectively, and 3005 differentially expressed genes coexisted in the radicles of both varieties. The phenylpropanoid biosynthesis pathway was implicated within the response to TS in maize radicles, and peroxidase may be an important indicator for assessing low-temperature tolerance during maize germination. Peroxidase-encoding genes could be important candidate genes for promoting low-temperature resistance in maize germinating radicles. We believe that this study enhances the knowledge of mechanisms of response and adaptation of the maize seed germination process to TS and provides a theoretical basis for efficiently assessing maize seed low-temperature tolerance and improving maize adversity germination performance.
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Affiliation(s)
- Yifei Zhang
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (J.L.); (W.L.); (X.G.); (X.X.); (C.Z.); (S.Y.); (Y.D.); (W.L.)
- Heilongjiang Provincial Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement, Daqing 163319, China
- Key Laboratory of Low-Carbon Green Agriculture in Northeastern China, Ministry of Agriculture and Rural Affairs, Daqing 163319, China
| | - Jiayu Li
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (J.L.); (W.L.); (X.G.); (X.X.); (C.Z.); (S.Y.); (Y.D.); (W.L.)
| | - Weiqing Li
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (J.L.); (W.L.); (X.G.); (X.X.); (C.Z.); (S.Y.); (Y.D.); (W.L.)
| | - Xinhan Gao
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (J.L.); (W.L.); (X.G.); (X.X.); (C.Z.); (S.Y.); (Y.D.); (W.L.)
| | - Xiangru Xu
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (J.L.); (W.L.); (X.G.); (X.X.); (C.Z.); (S.Y.); (Y.D.); (W.L.)
| | - Chunyu Zhang
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (J.L.); (W.L.); (X.G.); (X.X.); (C.Z.); (S.Y.); (Y.D.); (W.L.)
- Heilongjiang Provincial Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement, Daqing 163319, China
- Key Laboratory of Low-Carbon Green Agriculture in Northeastern China, Ministry of Agriculture and Rural Affairs, Daqing 163319, China
| | - Song Yu
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (J.L.); (W.L.); (X.G.); (X.X.); (C.Z.); (S.Y.); (Y.D.); (W.L.)
- Heilongjiang Provincial Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement, Daqing 163319, China
- Key Laboratory of Low-Carbon Green Agriculture in Northeastern China, Ministry of Agriculture and Rural Affairs, Daqing 163319, China
| | - Yi Dou
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (J.L.); (W.L.); (X.G.); (X.X.); (C.Z.); (S.Y.); (Y.D.); (W.L.)
| | - Wenqi Luo
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (J.L.); (W.L.); (X.G.); (X.X.); (C.Z.); (S.Y.); (Y.D.); (W.L.)
| | - Lihe Yu
- College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China; (J.L.); (W.L.); (X.G.); (X.X.); (C.Z.); (S.Y.); (Y.D.); (W.L.)
- Heilongjiang Provincial Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement, Daqing 163319, China
- Key Laboratory of Low-Carbon Green Agriculture in Northeastern China, Ministry of Agriculture and Rural Affairs, Daqing 163319, China
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Tijjani SB, Qi J, Giri S, Lathrop R. Crop production and water quality under 1.5 °C and 2 °C warming: Plant responses and management options in the mid-Atlantic region. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 907:167874. [PMID: 37858825 DOI: 10.1016/j.scitotenv.2023.167874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 09/19/2023] [Accepted: 10/14/2023] [Indexed: 10/21/2023]
Abstract
The 2015 "Paris Agreement" aims to limit the global average temperature rise to significantly less than 2 °C, preferably within 1.5 °C above pre-industrial levels. A multitude of studies have focused on evaluating how different sectors respond to such levels of warming. Nonetheless, most of these studies fail to provide a clear roadmap to mitigate these impacts. A case in point is the anticipated decline in corn and soybean yields and increased phosphorus (P) and nitrogen (N) discharge into water bodies, a trend linked to past agricultural practices and climate change. In this research, we employ a novel assessment of how existing management practices under 1.5 °C and 2 °C global warming (GW) scenarios can affect nutrient availability in time and space as well as crop yield in a typical agricultural watershed in the Mid-Atlantic Region, specifically the Upper Maurice River Watershed (UMRW) in New Jersey. Using the Soil and Water Assessment Tool (SWAT) with multiple Global Climate Model (GCM) projections, we found that compared to 1.5 °C, a 2 °C GW scenario would exacerbate runoff, leading to amplified nutrient leaching. These losses decrease nutrient availability during the crop growing season. Moreover, a mismatch between the timing of fertilizer application and crop nutrient absorption caused nutrient-related stress. This nutrient and anticipated temperature stress resulted in a more significant decrease in crop yields under the 2 °C GW scenario than the 1.5 °C scenario. We have designed a management scenario to reduce future nutrient losses while increasing crop yields. The strategy involves altering the timing of planting/harvesting and the fertilizer application rate in response to a warming climate. This approach is projected to increase corn and soybean yields by +39 % (+21 %) and +2 % (+17 %), respectively, under the 1.5 °C (2.0 °C) GW scenario for the RCP-4.5 pathway. Simultaneously, it is expected to decrease the N and P loads at 1.5 °C (2.0 °C) GW. Comparable projections are also observed under the RCP-8.5 pathway.
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Affiliation(s)
- Sadiya B Tijjani
- Department of Geography, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA.
| | - Junyu Qi
- Earth System Science Interdisciplinary Center, University of Maryland, College Park, 5825 University Research Ct, College Park, MD 20740, USA
| | - Subhasis Giri
- Department of Ecology, Evolution, and Natural Resources, School of Environmental and Biological Sciences, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA
| | - Richard Lathrop
- Department of Ecology, Evolution, and Natural Resources, School of Environmental and Biological Sciences, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901, USA
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Chowdhury NB, Simons-Senftle M, Decouard B, Quillere I, Rigault M, Sajeevan KA, Acharya B, Chowdhury R, Hirel B, Dellagi A, Maranas C, Saha R. A multi-organ maize metabolic model connects temperature stress with energy production and reducing power generation. iScience 2023; 26:108400. [PMID: 38077131 PMCID: PMC10709110 DOI: 10.1016/j.isci.2023.108400] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/30/2023] [Accepted: 11/03/2023] [Indexed: 02/18/2024] Open
Abstract
Climate change has adversely affected maize productivity. Thereby, a holistic understanding of metabolic crosstalk among its organs is important to address this issue. Thus, we reconstructed the first multi-organ maize metabolic model, iZMA6517, and contextualized it with heat and cold stress transcriptomics data using expression distributed reaction flux measurement (EXTREAM) algorithm. Furthermore, implementing metabolic bottleneck analysis on contextualized models revealed differences between these stresses. While both stresses had reducing power bottlenecks, heat stress had additional energy generation bottlenecks. We also performed thermodynamic driving force analysis, revealing thermodynamics-reducing power-energy generation axis dictating the nature of temperature stress responses. Thus, a temperature-tolerant maize ideotype can be engineered by leveraging the proposed thermodynamics-reducing power-energy generation axis. We experimentally inoculated maize root with a beneficial mycorrhizal fungus, Rhizophagus irregularis, and as a proof-of-concept demonstrated its efficacy in alleviating temperature stress. Overall, this study will guide the engineering effort of temperature stress-tolerant maize ideotypes.
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Affiliation(s)
- Niaz Bahar Chowdhury
- Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA
| | | | - Berengere Decouard
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000 Versailles, France
| | - Isabelle Quillere
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000 Versailles, France
| | - Martine Rigault
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000 Versailles, France
| | | | - Bibek Acharya
- Chemical and Biological Engineering, Iowa State University, Ames, IA, USA
| | - Ratul Chowdhury
- Chemical and Biological Engineering, Iowa State University, Ames, IA, USA
| | - Bertrand Hirel
- Centre de Versailles-Grignon, Institut National de Recherche pour l’Agriculture, Versailles, France
| | - Alia Dellagi
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000 Versailles, France
| | - Costas Maranas
- Chemical Engineering, The Pennsylvania State University, University Park, PA, USA
| | - Rajib Saha
- Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, NE, USA
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6
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Capo L, Sopegno A, Reyneri A, Ujvári G, Agnolucci M, Blandino M. Agronomic strategies to enhance the early vigor and yield of maize part II: the role of seed applied biostimulant, hybrid, and starter fertilization on crop performance. FRONTIERS IN PLANT SCIENCE 2023; 14:1240313. [PMID: 38023856 PMCID: PMC10656683 DOI: 10.3389/fpls.2023.1240313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 08/09/2023] [Indexed: 12/01/2023]
Abstract
Maize cropping systems need to be re-designed, within a sustainable intensification context, by focusing on the application of high-use efficiency crop practices, such as those that are able to enhance an early plant vigor in the first critical growth stages; such practices could lead to significant agronomic and yield benefits. The aim of this study has been to evaluate the effects of the cultivation of hybrids with superior early vigor, of the distribution of starter fertilizers at sowing, and of the seed application of biostimulants on promoting plant growth and grain yield in full factorial experiments carried out in both a growth chamber and in open fields. The greatest benefits, in terms of plant growth enhancement (plant height, biomass, leaf area) and cold stress mitigation, were detected for the starter fertilization, followed by the use of an early vigor hybrid and a biostimulant seed treatment. The starter fertilization and the early vigor hybrid led to earlier flowering dates, that is, of 2.1 and 2.8 days, respectively, and significantly reduced grain moisture at harvest. Moreover, the early vigor hybrid, the starter NP fertilization, and the biostimulant treatment increased grain yield by 8.5%, 6.0%, and 5.1%, respectively, compared to the standard hybrid and the untreated controls. The combination of all the considered factors resulted in the maximum benefits, compared to the control cropping system, with an increase in the plant growth of 124%, a reduction of the sowing-flowering period of 5 days, and a gain in grain yield of 14%. When choosing the most suitable crop practice, the diversity of each cropping system should be considered, according to the pedo-climatic conditions, the agronomic background, the yield potential, and the supply chain requirements.
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Affiliation(s)
- Luca Capo
- Department of Agriculture, Forest and Food Sciences, University of Turin, Grugliasco, Italy
| | - Alessandro Sopegno
- Department of Agriculture, Forest and Food Sciences, University of Turin, Grugliasco, Italy
| | - Amedeo Reyneri
- Department of Agriculture, Forest and Food Sciences, University of Turin, Grugliasco, Italy
| | - Gergely Ujvári
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
| | - Monica Agnolucci
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
| | - Massimo Blandino
- Department of Agriculture, Forest and Food Sciences, University of Turin, Grugliasco, Italy
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Ujvári G, Capo L, Grassi A, Cristani C, Pagliarani I, Turrini A, Blandino M, Giovannetti M, Agnolucci M. Agronomic strategies to enhance the early vigor and yield of maize. Part I: the role of seed applied biostimulant, hybrid and starter fertilization on rhizosphere bacteria profile and diversity. FRONTIERS IN PLANT SCIENCE 2023; 14:1240310. [PMID: 38023909 PMCID: PMC10651756 DOI: 10.3389/fpls.2023.1240310] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 10/18/2023] [Indexed: 12/01/2023]
Abstract
The sustainable intensification of maize-based systems may reduce greenhouse-gas emissions and the excessive use of non-renewable inputs. Considering the key role that the microbiological fertility has on crop growth and resilience, it is worth of interest studying the role of cropping system on the rhizosphere bacterial communities, that affect soil health and biological soil fertility. In this work we monitored and characterized the diversity and composition of native rhizosphere bacterial communities during the early growth phases of two maize genotypes of different early vigor, using a nitrogen (N)-phosphorus (P) starter fertilization and a biostimulant seed treatment, in a growth chamber experiment, by polymerase chain reaction-denaturing gradient gel electrophoresis of partial 16S rRNA gene and amplicon sequencing. Cluster analyses showed that the biostimulant treatment affected the rhizosphere bacterial microbiota of the ordinary hybrid more than that of the early vigor, both at plant emergence and at the 5-leaf stage. Moreover, the diversity indices calculated from the community profiles, revealed significant effects of NP fertilization on richness and the estimated effective number of species (H2) in both maize genotypes, while the biostimulant had a positive effect on plant growth promoting community of the ordinary hybrid, both at the plant emergence and at the fifth leaf stage. Our data showed that maize genotype was the major factor shaping rhizosphere bacterial community composition suggesting that the root system of the two maize hybrids recruited a different microbiota. Moreover, for the first time, we identified at the species and genus level the predominant native bacteria associated with two maize hybrids differing for vigor. These results pave the way for further studies to be performed on the effects of cropping system and specific crop practices, considering also the application of biostimulants, on beneficial rhizosphere microorganisms.
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Affiliation(s)
- Gergely Ujvári
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
| | - Luca Capo
- Department of Agriculture, Forest and Food Sciences, University of Turin, Grugliasco, Italy
| | - Arianna Grassi
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
| | - Caterina Cristani
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
| | - Irene Pagliarani
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
| | - Alessandra Turrini
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
| | - Massimo Blandino
- Department of Agriculture, Forest and Food Sciences, University of Turin, Grugliasco, Italy
| | - Manuela Giovannetti
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
| | - Monica Agnolucci
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
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Mohan N, Jhandai S, Bhadu S, Sharma L, Kaur T, Saharan V, Pal A. Acclimation response and management strategies to combat heat stress in wheat for sustainable agriculture: A state-of-the-art review. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 336:111834. [PMID: 37597666 DOI: 10.1016/j.plantsci.2023.111834] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 08/06/2023] [Accepted: 08/16/2023] [Indexed: 08/21/2023]
Abstract
Unpredicted variability in climate change on the planet is associated with frequent extreme high-temperature events impacting crop yield globally. Wheat is an economically and nutritionally important crop that fulfils global food requirements and each degree rise in temperature results in ∼6% of its yield reduction. Thus, understanding the impact of climate change, especially the terminal heat stress on global wheat production, becomes critically important for policymakers, crop breeders, researchers and scientists to ensure global food security. This review describes how wheat perceives heat stress and induces stress adaptation events by its morpho-physiological, phenological, molecular, and biochemical makeup. Temperature above a threshold level in crop vicinity leads to irreversible injuries, viz. destruction of cellular membranes and enzymes, generation of active oxygen species, redox imbalance, etc. To cope with these changes, wheat activates its heat tolerance mechanisms characterized by hoarding up soluble carbohydrates, signalling molecules, and heat tolerance gene expressions. Being vulnerable to heat stress, increasing wheat production without delay seeks strategies to mitigate the detrimental effects and provoke the methods for its sustainable development. Thus, to ensure the crop's resilience to stress and increasing food demand, this article circumscribes the integrated management approaches to enhance wheat's performance and adaptive capacity besides its alleviating risks of increasing temperature anticipated with climate change. Implementing these integrated strategies in the face of risks from rising temperatures will assist us in producing sustainable wheat with improved yield.
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Affiliation(s)
- Narender Mohan
- Department of Biochemistry, College of Basic Sciences and Humanities, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana 125004, India.
| | - Sonia Jhandai
- Department of Biochemistry, College of Basic Sciences and Humanities, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana 125004, India
| | - Surina Bhadu
- Department of Biochemistry, College of Basic Sciences and Humanities, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana 125004, India
| | - Lochan Sharma
- Department of Nematology, College of Agriculture, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana 125004, India
| | - Taranjeet Kaur
- Department of Biochemistry, College of Basic Sciences and Humanities, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana 125004, India
| | - Vinod Saharan
- Department of Molecular Biology and Biotechnology, Rajasthan College of Agriculture, Maharana Pratap University of Agriculture and Technology, Udaipur, Rajasthan 313001, India
| | - Ajay Pal
- Department of Biochemistry, College of Basic Sciences and Humanities, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana 125004, India
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Khan W, Shah S, Ullah A, Ullah S, Amin F, Iqbal B, Ahmad N, Abdel-Maksoud MA, Okla MK, El-Zaidy M, Al-Qahtani WH, Fahad S. Utilizing hydrothermal time models to assess the effects of temperature and osmotic stress on maize (Zea mays L.) germination and physiological responses. BMC PLANT BIOLOGY 2023; 23:414. [PMID: 37679677 PMCID: PMC10483708 DOI: 10.1186/s12870-023-04429-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 08/29/2023] [Indexed: 09/09/2023]
Abstract
The application of germination models in economic crop management makes them extremely useful for predicting seed germination. Hence, we examined the effect of varying water potentials (Ψs; 0. - 0.3, - 0.6, - 0.9, - 1.2 MPa) and temperatures (Ts; 20, 25, 30, 35, 40 °C) on maize germination and enzymatic antioxidant mechanism. We observed that varying Ts and Ψs significantly influenced germination percentage (GP) and germination rate (GR), and other germination parameters, including germination rate index (GRI), germination index (GI), mean germination index (MGI), mean germination time (MGT), coefficient of the velocity of germination (CVG), and germination energy (GE) (p ≤ 0.01). Maximum (87.60) and minimum (55.20) hydro-time constant (θH) were reported at 35 °C and 20 °C, respectively. In addition, base water potential at 50 percentiles was highest at 30 °C (15.84 MPa) and lowest at 20 °C (15.46 MPa). Furthermore, the optimal, low, and ceiling T (To, Tb and Tc, respectively) were determined as 30 °C, 20 °C and 40 °C, respectively. The highest θT1 and θT2 were reported at 40 °C (0 MPa) and 20 °C (- 0.9 MPa), respectively. HTT has a higher value (R2 = 0.43 at 40 °C) at sub-optimal than supra-optimal temperatures (R2 = 0.41 at 40 °C). Antioxidant enzymes, including peroxidase (POD), catalase (CAT), superoxide dismutase (SOD), ascorbate peroxidase (APX), and glutathione peroxidase (GPX), increased with decreasing Ψs. In contrast, CAT and POD were higher at 20 °C and 40 °C but declined at 25, 30, and 35 °C. The APX and GPX remained unchanged at 20, 25, 30, and 40 °C but declined at 35 °C. Thus, maintaining enzymatic activity is a protective mechanism against oxidative stress. A decline in germination characteristics may result from energy diverting to anti-stress tools (antioxidant enzymes) necessary for eliminating reactive oxygen species (ROS) to reduce salinity-induced oxidative damage. The parameters examined in this study are easily applicable to simulation models of Z. mays L. germination under extreme environmental conditions characterized by water deficits and temperature fluctuations.
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Affiliation(s)
- Waqif Khan
- Institute of Grassland Science, Northeast Normal University, Key Laboratory of Vegetation Ecology, Ministry of Education, Changchun, China
| | - Sumbal Shah
- Department of Botany, University of Peshawar, Peshawar, 25120, Pakistan
| | - Abd Ullah
- Xinjiang Key Desert Plant Roots Ecology and Vegetation Restoration Laboratory, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 818 South Beijing Road, Urumqi, 830000, Xinjiang, China
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, 830000, Xinjiang, China
| | - Sami Ullah
- Department of Botany, University of Peshawar, Peshawar, 25120, Pakistan
| | - Fazal Amin
- Department of Botany, University of Peshawar, Peshawar, 25120, Pakistan
| | - Babar Iqbal
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212000, China.
| | - Naveed Ahmad
- Joint Center for Single Cell Biology, Shanghai Collaborative Innovation Center of Agri-Seeds, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China.
| | - Mostafa A Abdel-Maksoud
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, 11451, Riyadh, Saudi Arabia
| | - Mohammed K Okla
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, 11451, Riyadh, Saudi Arabia
| | - Mohamed El-Zaidy
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, 11451, Riyadh, Saudi Arabia
| | - Wahidah H Al-Qahtani
- Department of Food Sciences & Nutrition, College of Food and Agricultural Sciences, King Saud University, P.O. Box 270677, 11352, Riyadh, Saudi Arabia
| | - Shah Fahad
- Department of Agronomy, Abdul Wali Khan University Mardan, Mardan, 23200, Khyber Pakhtunkhwa, Pakistan.
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10
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Yactayo-Chang JP, Block AK. The impact of climate change on maize chemical defenses. Biochem J 2023; 480:1285-1298. [PMID: 37622733 DOI: 10.1042/bcj20220444] [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: 12/12/2022] [Revised: 08/01/2023] [Accepted: 08/17/2023] [Indexed: 08/26/2023]
Abstract
Climate change is increasingly affecting agriculture, both at the levels of crops themselves, and by altering the distribution and damage caused by insect or microbial pests. As global food security depends on the reliable production of major crops such as maize (Zea mays), it is vital that appropriate steps are taken to mitigate these negative impacts. To do this a clear understanding of what the impacts are and how they occur is needed. This review focuses on the impact of climate change on the production and effectiveness of maize chemical defenses, including volatile organic compounds, terpenoid phytoalexins, benzoxazinoids, phenolics, and flavonoids. Drought, flooding, heat stress, and elevated concentrations of atmospheric carbon dioxide, all impact the production of maize chemical defenses, in a compound and tissue-specific manner. Furthermore, changes in stomatal conductance and altered soil conditions caused by climate change can impact environmental dispersal and effectiveness certain chemicals. This can alter both defensive barrier formation and multitrophic interactions. The production of defense chemicals is controlled by stress signaling networks. The use of similar networks to co-ordinate the response to abiotic and biotic stress can lead to complex integration of these networks in response to the combinatorial stresses that are likely to occur in a changing climate. The impact of multiple stressors on maize chemical defenses can therefore be different from the sum of the responses to individual stressors and challenging to predict. Much work remains to effectively leverage these protective chemicals in climate-resilient maize.
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Affiliation(s)
- Jessica P Yactayo-Chang
- United States Department of Agriculture-Agricultural Research Service, Chemistry Research Unit, Gainesville, FL, U.S.A
| | - Anna K Block
- United States Department of Agriculture-Agricultural Research Service, Chemistry Research Unit, Gainesville, FL, U.S.A
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11
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Yang H, Fang R, Luo L, Yang W, Huang Q, Yang C, Hui W, Gong W, Wang J. Uncovering the mechanisms of salicylic acid-mediated abiotic stress tolerance in horticultural crops. FRONTIERS IN PLANT SCIENCE 2023; 14:1226041. [PMID: 37701800 PMCID: PMC10494719 DOI: 10.3389/fpls.2023.1226041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 07/28/2023] [Indexed: 09/14/2023]
Abstract
Salicylic acid (SA) has been recognized as a promising molecule for improving abiotic stress tolerance in plants due to its ability to enhance antioxidant defense system, and promote root architecture system. Recent research has focused on uncovering the mechanisms by which SA confers abiotic stress tolerance in horticultural crops. SA has been shown to act as a signaling molecule that triggers various physiological and morphological responses in plants. SA regulates the production of reactive oxygen species (ROS). Moreover, it can also act as signaling molecule that regulate the expression of stress-responsive genes. SA can directly interact with various hormones, proteins and enzymes involved in abiotic stress tolerance. SA regulates the antioxidant enzymes activities that scavenge toxic ROS, thereby reducing oxidative damage in plants. SA can also activate protein kinases that phosphorylate and activate transcription factors involved in stress responses. Understanding these mechanisms is essential for developing effective strategies to improve crop resilience in the face of changing environmental conditions. Current information provides valuable insights for farmers and plant researchers, offering new strategies to enhance crop resilience and productivity in the face of environmental challenges. By harnessing the power of SA and its signaling pathways, farmers can develop more effective stress management techniques and optimize crop performance. Plant researchers can also explore innovative approaches to breed or engineer crops with enhanced stress tolerance, thereby contributing to sustainable agriculture and food security.
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Affiliation(s)
- Hua Yang
- Provincial Key Laboratory of Forestry Ecological Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural UR.A.niversity, Chengdu, China
| | - Rui Fang
- Provincial Key Laboratory of Forestry Ecological Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural UR.A.niversity, Chengdu, China
| | - Ling Luo
- School of Environment, Sichuan Agricultural University, Chengdu, China
| | - Wei Yang
- Provincial Key Laboratory of Forestry Ecological Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural UR.A.niversity, Chengdu, China
| | - Qiong Huang
- Provincial Key Laboratory of Forestry Ecological Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural UR.A.niversity, Chengdu, China
| | - Chunlin Yang
- Provincial Key Laboratory of Forestry Ecological Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural UR.A.niversity, Chengdu, China
| | - Wenkai Hui
- Provincial Key Laboratory of Forestry Ecological Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural UR.A.niversity, Chengdu, China
| | - Wei Gong
- Provincial Key Laboratory of Forestry Ecological Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural UR.A.niversity, Chengdu, China
| | - Jingyan Wang
- Provincial Key Laboratory of Forestry Ecological Engineering of Sichuan Province, College of Forestry, Sichuan Agricultural UR.A.niversity, Chengdu, China
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12
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Shikha K, Madhumal Thayil V, Shahi JP, Zaidi PH, Seetharam K, Nair SK, Singh R, Tosh G, Singamsetti A, Singh S, Sinha B. Genomic-regions associated with cold stress tolerance in Asia-adapted tropical maize germplasm. Sci Rep 2023; 13:6297. [PMID: 37072497 PMCID: PMC10113201 DOI: 10.1038/s41598-023-33250-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 04/10/2023] [Indexed: 05/03/2023] Open
Abstract
Maize is gaining impetus in non-traditional and non-conventional seasons such as off-season, primarily due to higher demand and economic returns. Maize varieties directed for growing in the winter season of South Asia must have cold resilience as an important trait due to the low prevailing temperatures and frequent cold snaps observed during this season in most parts of the lowland tropics of Asia. The current study involved screening of a panel of advanced tropically adapted maize lines to cold stress during vegetative and flowering stage under field conditions. A suite of significant genomic loci (28) associated with grain yield along and agronomic traits such as flowering (15) and plant height (6) under cold stress environments. The haplotype regression revealed 6 significant haplotype blocks for grain yield under cold stress across the test environments. Haplotype blocks particularly on chromosomes 5 (bin5.07), 6 (bin6.02), and 9 (9.03) co-located to regions/bins that have been identified to contain candidate genes involved in membrane transport system that would provide essential tolerance to the plant. The regions on chromosome 1 (bin1.04), 2 (bin 2.07), 3 (bin 3.05-3.06), 5 (bin5.03), 8 (bin8.05-8.06) also harboured significant SNPs for the other agronomic traits. In addition, the study also looked at the plausibility of identifying tropically adapted maize lines from the working germplasm with cold resilience across growth stages and identified four lines that could be used as breeding starts in the tropical maize breeding pipelines.
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Affiliation(s)
- Kumari Shikha
- Department of Genetics and Plant Breeding, Banaras Hindu University (BHU), Varanasi, India
| | - Vinayan Madhumal Thayil
- International Maize and Wheat Improvement Centre (CIMMYT), ICRISAT Campus, Patancheru, Telangana, India.
| | - J P Shahi
- Department of Genetics and Plant Breeding, Banaras Hindu University (BHU), Varanasi, India
| | - P H Zaidi
- International Maize and Wheat Improvement Centre (CIMMYT), ICRISAT Campus, Patancheru, Telangana, India
| | - Kaliyamoorthy Seetharam
- International Maize and Wheat Improvement Centre (CIMMYT), ICRISAT Campus, Patancheru, Telangana, India
| | - Sudha K Nair
- International Maize and Wheat Improvement Centre (CIMMYT), ICRISAT Campus, Patancheru, Telangana, India
| | - Raju Singh
- Borlaug Institute for South Asia (BISA), Ludhiana, Punjab, India
| | - Garg Tosh
- Punjab Agricultural University (PAU), Ludhiana, India
| | - Ashok Singamsetti
- Department of Genetics and Plant Breeding, Banaras Hindu University (BHU), Varanasi, India
| | - Saurabh Singh
- Department of Genetics and Plant Breeding, Banaras Hindu University (BHU), Varanasi, India
| | - B Sinha
- Department of Genetics and Plant Breeding, Banaras Hindu University (BHU), Varanasi, India
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13
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Ramazan S, Jan N, John R. Comparative protein analysis of two maize genotypes with contrasting tolerance to low temperature. BMC PLANT BIOLOGY 2023; 23:183. [PMID: 37020183 PMCID: PMC10074880 DOI: 10.1186/s12870-023-04198-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 03/28/2023] [Indexed: 06/19/2023]
Abstract
BACKGROUND Low temperature (LT) stress is one of the major environmental stress factors affecting the growth and yield of maize (Zea mays L.). Hence, it is important to unravel the molecular mechanisms behind LT stress tolerance to improve molecular breeding in LT tolerant genotypes. In the present study, two maize genotypes viz. Gurez local from Kashmir Himalaya and tropical grown GM6, were dissected for their LT stress response in terms of accumulation of differentially regulated proteins (DRPs). Leaf proteome analysis at three-leaf stage of maize seedlings subjected to LT stress of 6 °C for a total of 12 h duration was performed using two dimensional gel electrophoresis (2D-PAGE) followed by subsequent identification of the proteins involved. RESULTS After MALDI-TOF (Matrix-assisted laser desorption/ionization-time of flight) and bioinformatics analysis, 19 proteins were successfully identified in Gurez local, while as 10 proteins were found to get successful identification in GM6. The interesting observations from the present investigation is the identification of three novel proteins viz. threonine dehydratase biosynthetic chloroplastic, thylakoidal processing peptidase 1 chloroplastic, and nodulin-like protein, whose role in abiotic stress tolerance, in general, and LT stress, in particular, has not been reported so far. It is important to highlight here that most of LT responsive proteins including the three novel proteins were identified from Gurez local only, owing to its exceptional LT tolerance. From the protein profiles, obtained in both genotypes immediately after LT stress perception, it was inferred that stress responsive protein accumulation and their expression fashion help the Gurez local in seedling establishment and withstand unfavorable conditions as compared to GM6. This was inferred from the findings of pathway enrichment analysis like regulation of seed growth, timing of floral transition, lipid glycosylation, and aspartate family amino acid catabolic processes, besides other key stress defense mechanisms. However, in GM6, metabolic pathways enriched were found to be involved in more general processes including cell cycle DNA replication and regulation of phenylpropanoid metabolism. Furthermore, majority of the qRT-PCR results of the selected proteins demonstrated positive correlation between protein levels and transcript abundance, thereby strengthening our findings. CONCLUSIONS In conclusion, our findings reported majority of the identified proteins in Gurez local exhibiting up-regulated pattern under LT stress as compared to GM6. Furthermore, three novel proteins induced by LT stress were found in Gurez local, requiring further functional validation. Therefore, our results offer more insights for elucidating the molecular networks mediating LT stress tolerance in maize.
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Affiliation(s)
- Salika Ramazan
- Plant Molecular Biology Lab, Department of Botany, University of Kashmir, Srinagar, Kashmir, 190 006, India
| | - Nelofer Jan
- Plant Molecular Biology Lab, Department of Botany, University of Kashmir, Srinagar, Kashmir, 190 006, India
| | - Riffat John
- Plant Molecular Biology Lab, Department of Botany, University of Kashmir, Srinagar, Kashmir, 190 006, India.
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14
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Friero I, Larriba E, Martínez-Melgarejo PA, Justamante MS, Alarcón MV, Albacete A, Salguero J, Pérez-Pérez JM. Transcriptomic and hormonal analysis of the roots of maize seedlings grown hydroponically at low temperature. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 326:111525. [PMID: 36328179 DOI: 10.1016/j.plantsci.2022.111525] [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: 09/09/2022] [Revised: 10/23/2022] [Accepted: 10/29/2022] [Indexed: 06/16/2023]
Abstract
Prolonged cold stress has a strong effect on plant growth and development, especially in subtropical crops such as maize. Soil temperature limits primary root elongation, mainly during early seedling establishment. However, little is known about how moderate temperature fluctuations affect root growth at the molecular and physiological levels. We have studied root tips of young maize seedlings grown hydroponically at 30 ºC and after a short period (up to 24 h) of moderate cooling (20 ºC). We found that both cell division and cell elongation in the root apical meristem are affected by temperature. Time-course analyses of hormonal and transcriptomic profiles were achieved after temperature reduction from 30 ºC to 20 ºC. Our results highlighted a complex regulation of endogenous pathways leading to adaptive root responses to moderate cooling conditions.
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Affiliation(s)
- Iván Friero
- Departamento de Biología Vegetal, Ecología y Ciencias de la Tierra, Universidad de Extremadura, 06006 Badajoz, Spain.
| | - Eduardo Larriba
- Instituto de Bioingeniería, Universidad Miguel Hernández, 03202 Elche, Spain.
| | | | | | - M Victoria Alarcón
- Área de Agronomía de Cultivos Leñosos y Hortícolas, Instituto de Investigaciones Agrarias "La Orden-Valdesequera" (CICYTEX), Junta de Extremadura, 06187 Badajoz, Spain.
| | - Alfonso Albacete
- Departamento de Nutrición Vegetal, CEBAS-CSIC, 30100 Murcia, Spain.
| | - Julio Salguero
- Departamento de Biología Vegetal, Ecología y Ciencias de la Tierra, Universidad de Extremadura, 06006 Badajoz, Spain.
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15
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Choudhary P, Muthamilarasan M. Modulating physiological and transcriptional regulatory mechanisms for enhanced climate resilience in cereal crops. JOURNAL OF PLANT PHYSIOLOGY 2022; 278:153815. [PMID: 36150236 DOI: 10.1016/j.jplph.2022.153815] [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: 04/22/2022] [Revised: 09/09/2022] [Accepted: 09/10/2022] [Indexed: 06/16/2023]
Abstract
Climate change adversely affects the yield and productivity of cereal crops, which consequently impacts food security. Therefore, studying stress acclimation, particularly transcriptional patterns and morpho-physiological responses of cereal crops to different stresses, will provide insights into the molecular determinants underlying climate resilience. The availability of advanced tools and approaches has enabled the characterization of plants at morphological, physiological, biochemical, and molecular levels, which will lead to the identification of genomic regions regulating the stress responses at these levels. This will further facilitate using transgenic, breeding, or genome editing approaches to manipulate the identified regions (genes, alleles, or QTLs) to enhance stress resilience. Next-generation sequencing approaches have advanced the identification of causal genes and markers in the genomes through forward or reverse genetics. In this context, the review enumerates the progress of dissecting the molecular mechanisms underlying transcriptional and physiological responses of major cereals to climate-induced stresses. The review systematically discusses different tools and approaches available to study the response of plants to various stresses and identify the molecular determinants regulating stress-resilience. Further, the application of genomics-assisted breeding, transgene-, and targeted editing-based approaches for modulating the genetic determinants for enhanced climate resilience has been elaborated.
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Affiliation(s)
- Pooja Choudhary
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, Telangana, India
| | - Mehanathan Muthamilarasan
- Department of Plant Sciences, School of Life Sciences, University of Hyderabad, Hyderabad, 500046, Telangana, India.
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16
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Sprague SA, Tamang TM, Steiner T, Wu Q, Hu Y, Kakeshpour T, Park J, Yang J, Peng Z, Bergkamp B, Somayanda I, Peterson M, Oliveira Garcia E, Hao Y, St. Amand P, Bai G, Nakata PA, Rieu I, Jackson DP, Cheng N, Valent B, Hirschi KD, Jagadish SVK, Liu S, White FF, Park S. Redox-engineering enhances maize thermotolerance and grain yield in the field. PLANT BIOTECHNOLOGY JOURNAL 2022; 20:1819-1832. [PMID: 35656643 PMCID: PMC9398381 DOI: 10.1111/pbi.13866] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/20/2022] [Accepted: 05/27/2022] [Indexed: 05/22/2023]
Abstract
Increasing populations and temperatures are expected to escalate food demands beyond production capacities, and the development of maize lines with better performance under heat stress is desirable. Here, we report that constitutive ectopic expression of a heterologous glutaredoxin S17 from Arabidopsis thaliana (AtGRXS17) can provide thermotolerance in maize through enhanced chaperone activity and modulation of heat stress-associated gene expression. The thermotolerant maize lines had increased protection against protein damage and yielded a sixfold increase in grain production in comparison to the non-transgenic counterparts under heat stress field conditions. The maize lines also displayed thermotolerance in the reproductive stages, resulting in improved pollen germination and the higher fidelity of fertilized ovules under heat stress conditions. Our results present a robust and simple strategy for meeting rising yield demands in maize and, possibly, other crop species in a warming global environment.
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Affiliation(s)
- Stuart A. Sprague
- Department of Horticulture and Natural ResourcesKansas State UniversityManhattanKSUSA
- Present address:
School of Agricultural SciencesNorthwest Missouri State UniversityMaryvilleMO64468USA
| | - Tej Man Tamang
- Department of Horticulture and Natural ResourcesKansas State UniversityManhattanKSUSA
| | - Trevor Steiner
- Department of Horticulture and Natural ResourcesKansas State UniversityManhattanKSUSA
| | - Qingyu Wu
- Department of Horticulture and Natural ResourcesKansas State UniversityManhattanKSUSA
- Present address:
Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing100081China
| | - Ying Hu
- Department of Horticulture and Natural ResourcesKansas State UniversityManhattanKSUSA
- Present address:
Department of Horticultural SciencesUniversity of FloridaGainesvilleFL32611USA
| | - Tayebeh Kakeshpour
- Department of Horticulture and Natural ResourcesKansas State UniversityManhattanKSUSA
| | - Jungeun Park
- Department of Horticulture and Natural ResourcesKansas State UniversityManhattanKSUSA
| | - Jian Yang
- United States Department of Agriculture/Agricultural Research Service, Children's Nutrition Research Center, Department of PediatricsBaylor College of MedicineHoustonTXUSA
| | - Zhao Peng
- Department of Plant PathologyUniversity of FloridaGainesvilleFLUSA
| | - Blake Bergkamp
- Department of AgronomyKansas State UniversityManhattanKSUSA
| | - Impa Somayanda
- Department of AgronomyKansas State UniversityManhattanKSUSA
| | - Morgan Peterson
- United States Department of Agriculture/Agricultural Research Service, Hard Winter Wheat Genetics Research UnitKansas State UniversityManhattanKSUSA
| | | | - Yangfan Hao
- Department of Plant PathologyKansas State UniversityManhattanKSUSA
| | - Paul St. Amand
- United States Department of Agriculture/Agricultural Research Service, Hard Winter Wheat Genetics Research UnitKansas State UniversityManhattanKSUSA
| | - Guihua Bai
- United States Department of Agriculture/Agricultural Research Service, Hard Winter Wheat Genetics Research UnitKansas State UniversityManhattanKSUSA
| | - Paul A. Nakata
- United States Department of Agriculture/Agricultural Research Service, Children's Nutrition Research Center, Department of PediatricsBaylor College of MedicineHoustonTXUSA
| | - Ivo Rieu
- Department of Plant Systems Physiology, Radboud Institute for Biological and Environmental SciencesRadboud UniversityNijmegenThe Netherlands
| | | | - Ninghui Cheng
- United States Department of Agriculture/Agricultural Research Service, Children's Nutrition Research Center, Department of PediatricsBaylor College of MedicineHoustonTXUSA
| | - Barbara Valent
- Department of Plant PathologyKansas State UniversityManhattanKSUSA
| | - Kendal D. Hirschi
- United States Department of Agriculture/Agricultural Research Service, Children's Nutrition Research Center, Department of PediatricsBaylor College of MedicineHoustonTXUSA
| | | | - Sanzhen Liu
- Department of Plant PathologyKansas State UniversityManhattanKSUSA
| | - Frank F. White
- Department of Plant PathologyUniversity of FloridaGainesvilleFLUSA
| | - Sunghun Park
- Department of Horticulture and Natural ResourcesKansas State UniversityManhattanKSUSA
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17
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Proctor J, Rigden A, Chan D, Huybers P. More accurate specification of water supply shows its importance for global crop production. NATURE FOOD 2022; 3:753-763. [PMID: 37118152 DOI: 10.1038/s43016-022-00592-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 08/10/2022] [Indexed: 04/30/2023]
Abstract
Warming temperatures tend to damage crop yields, yet the influence of water supply on global yields and its relation to temperature stress remains unclear. Here we use satellite-based measurements to provide empirical estimates of how root zone soil moisture and surface air temperature jointly influence the global productivity of maize, soybeans, millet and sorghum. Relative to empirical models using precipitation as a proxy for water supply, we find that models using soil moisture explain 30-120% more of the interannual yield variation across crops. Models using soil moisture also better separate water-supply stress from correlated heat stress and show that soil moisture and temperature contribute roughly equally to historical variations in yield. Globally, our models project yield damages of -9% to -32% across crops by end-of-century under Shared Socioeconomic Pathway 5-8.5 from changes in temperature and soil moisture. By contrast, projections using temperature and precipitation overestimate damages by 28% to 320% across crops both because they confound stresses from dryness and heat and because changes in soil moisture and temperature diverge from their historical association due to climate change. Our results demonstrate the importance of accurately representing water supply for predicting changes in global agricultural productivity and for designing effective adaptation strategies.
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Affiliation(s)
- Jonathan Proctor
- Center for the Environment and Data Science Initiative, Harvard University, Cambridge, MA, USA.
| | - Angela Rigden
- Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, USA
- Department of Earth System Science, University of California Irvine, Irvine, CA, USA
| | - Duo Chan
- Department of Physical Oceanography, Woods Hole Oceanographic Institution, Woods Hole, MA, USA
| | - Peter Huybers
- Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, USA
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18
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Xuhui L, Weiwei C, Siqi L, Junteng F, Hang Z, Xiangbo Z, Yongwen Q. Full-length transcriptome analysis of maize root tips reveals the molecular mechanism of cold stress during the seedling stage. BMC PLANT BIOLOGY 2022; 22:398. [PMID: 35963989 PMCID: PMC9375949 DOI: 10.1186/s12870-022-03787-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 08/03/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND As maize originated in tropical or subtropical zones, most maize germplasm is extremely sensitive to low temperatures during the seedling stage. Clarifying the molecular mechanism of cold acclimation would facilitate the breeding of cold tolerant maize varieties, which is one of the major sustainability factors for crop production. To meet this goal, we investigated two maize inbred lines with contrasting levels of cold tolerance at the seedling stage (IL85, a cold tolerant line; B73, a cold sensitive line), and performed full-length transcriptome sequencing on the root tips of seedlings before and after 24 h of cold treatment. RESULTS We identified 152,263 transcripts, including 20,993 novel transcripts, and determined per-transcript expression levels. A total of 1,475 transcripts were specifically up-regulated in the cold tolerant line IL85 under cold stress. GO enrichment analysis revealed that 25 transcripts were involved in reactive oxygen species (ROS) metabolic processes and 15 transcripts were related to the response to heat. Eight genes showed specific differential alternative splicing (DAS) in IL85 under cold stress, and were mainly involved in amine metabolism. A total of 1,111 lncRNAs were further identified, 62 of which were up-regulated in IL85 or B73 under cold stress, and their corresponding target genes were enriched in protein phosphorylation. CONCLUSIONS These results provide new insights into the molecular mechanism of cold acclimation during the seedling stage in maize, and will facilitate the development of cultivars with improved cold stress tolerance.
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Affiliation(s)
- Li Xuhui
- Institute of Nanfan & Seed Industry, Guangdong Academy of Science, Guangzhou, 510316, Guangdong, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, China
| | - Chen Weiwei
- Institute of Nanfan & Seed Industry, Guangdong Academy of Science, Guangzhou, 510316, Guangdong, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, China
| | - Lu Siqi
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510325, Guangdong, China
| | - Fang Junteng
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510325, Guangdong, China
| | - Zhu Hang
- College of Agriculture, Yangtze University, Jingzhou, 434025, Hubei, China
| | - Zhang Xiangbo
- Institute of Nanfan & Seed Industry, Guangdong Academy of Science, Guangzhou, 510316, Guangdong, China
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, China
| | - Qi Yongwen
- Institute of Nanfan & Seed Industry, Guangdong Academy of Science, Guangzhou, 510316, Guangdong, China.
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, China.
- College of Agriculture and Biology, Zhongkai University of Agriculture and Engineering, Guangzhou, 510325, Guangdong, China.
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19
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Seasonal Variations in Grain Yield, Greenhouse Gas Emissions and Carbon Sequestration for Maize Cultivation in Bangladesh. SUSTAINABILITY 2022. [DOI: 10.3390/su14159144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Rationale: Greenhouse gas (GHG) emissions from crop agriculture are of great concern in the context of changing climatic conditions; however, in most cases, data based on lifecycle assessments are not available for grain yield variations or the carbon footprint of maize. The current study aimed to determine net carbon emissions and sequestration for maize grown in Bangladesh. Methods: The static closed-chamber technique was used to determine total GHG emissions using data on GHG emissions from maize fields and secondary sources for inputs. A secondary source for regional yield data was used in the current study. GHG emission intensity is defined as the ratio of total emissions to grain yield. The net GHG emission/carbon sequestration was determined by subtracting total GHG emissions (CO2 eq.) from net primary production (NPP). Results: Grain yields varied from 1590 to 9300 kg ha−1 in the wet season and from 680 to 11,820 kg ha−1 in the dry season. GHG emission intensities were 0.53–2.21 and 0.37–1.70 kg CO2 eq. kg−1 grain in the wet and dry seasons, respectively. In Bangladesh, the total estimated GHG emissions were 1.66–4.09 million tonnes (MT) CO2 eq. from 2015 to 2020, whereas the net total CO2 sequestration was 1.51–3.91 MT. The net CO2 sequestration rates were 984.3–5757.4 kg ha−1 in the wet season and 1188.62–5757.39 kg ha−1 in the dry season. This study observed spatial variations in carbon emissions and sequestration depending on growing seasons. In the rice–maize pattern, maize sequestered about 1.23 MT CO2 eq. per year−1, but rice emitted about 0.16 MT CO2 eq. per year−1. This study showed potential spatiotemporal variations in carbon footprints. Recommendation: Special care is needed to improve maize grain yields in the wet season. Fertiliser and water use efficiencies need to be improved to minimise GHG emissions under changing climatic conditions. Efforts to increase the area under cultivation with rice–maize or other non-rice crop-based cropping systems are needed to augment CO2 sequestration. The generation of a regional data bank on carbon footprints would be beneficial for combating the impact of climate change.
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Burnett AC, Kromdijk J. Can we improve the chilling tolerance of maize photosynthesis through breeding? JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:3138-3156. [PMID: 35143635 PMCID: PMC9126739 DOI: 10.1093/jxb/erac045] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 02/02/2022] [Indexed: 05/11/2023]
Abstract
Chilling tolerance is necessary for crops to thrive in temperate regions where cold snaps and lower baseline temperatures place limits on life processes; this is particularly true for crops of tropical origin such as maize. Photosynthesis is often adversely affected by chilling stress, yet the maintenance of photosynthesis is essential for healthy growth and development, and most crucially for yield. In this review, we describe the physiological basis for enhancing chilling tolerance of photosynthesis in maize by examining nine key responses to chilling stress. We synthesize current knowledge of genetic variation for photosynthetic chilling tolerance in maize with respect to each of these traits and summarize the extent to which genetic mapping and candidate genes have been used to understand the genomic regions underpinning chilling tolerance. Finally, we provide perspectives on the future of breeding for photosynthetic chilling tolerance in maize. We advocate for holistic and high-throughput approaches to screen for chilling tolerance of photosynthesis in research and breeding programmes in order to develop resilient crops for the future.
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Affiliation(s)
- Angela C Burnett
- Department of Plant Sciences, University of CambridgeCambridge, UK
- Correspondence:
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21
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El-Sappah AH, Rather SA, Wani SH, Elrys AS, Bilal M, Huang Q, Dar ZA, Elashtokhy MMA, Soaud N, Koul M, Mir RR, Yan K, Li J, El-Tarabily KA, Abbas M. Heat Stress-Mediated Constraints in Maize ( Zea mays) Production: Challenges and Solutions. FRONTIERS IN PLANT SCIENCE 2022; 13:879366. [PMID: 35615131 PMCID: PMC9125997 DOI: 10.3389/fpls.2022.879366] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 03/30/2022] [Indexed: 05/05/2023]
Abstract
An increase in temperature and extreme heat stress is responsible for the global reduction in maize yield. Heat stress affects the integrity of the plasma membrane functioning of mitochondria and chloroplast, which further results in the over-accumulation of reactive oxygen species. The activation of a signal cascade subsequently induces the transcription of heat shock proteins. The denaturation and accumulation of misfolded or unfolded proteins generate cell toxicity, leading to death. Therefore, developing maize cultivars with significant heat tolerance is urgently required. Despite the explored molecular mechanism underlying heat stress response in some plant species, the precise genetic engineering of maize is required to develop high heat-tolerant varieties. Several agronomic management practices, such as soil and nutrient management, plantation rate, timing, crop rotation, and irrigation, are beneficial along with the advanced molecular strategies to counter the elevated heat stress experienced by maize. This review summarizes heat stress sensing, induction of signaling cascade, symptoms, heat stress-related genes, the molecular feature of maize response, and approaches used in developing heat-tolerant maize varieties.
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Affiliation(s)
- Ahmed H. El-Sappah
- School of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Department of Genetics, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
- Key Laboratory of Sichuan Province for Refining Sichuan Tea, Yibin, China
| | - Shabir A. Rather
- Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun, China
| | - Shabir Hussain Wani
- Mountain Research Centre for Field Crops Khudwani Anantnag, SKUAST–Kashmir, Srinagar, India
| | - Ahmed S. Elrys
- Department of Soil Science, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Muhammad Bilal
- School of Life Sciences and Food Engineering, Huaiyin Institute of Technology, Huaian, China
| | - Qiulan Huang
- Key Laboratory of Sichuan Province for Refining Sichuan Tea, Yibin, China
- College of Tea Science, Yibin University, Yibin, China
| | - Zahoor Ahmad Dar
- Dryland Agriculture Research Station, SKUAST–Kashmir, Srinagar, India
| | | | - Nourhan Soaud
- Department of Crop Science, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Monika Koul
- Department of Botany, Hansraj College, University of Delhi, New Delhi, India
| | - Reyazul Rouf Mir
- Division of Genetics and Plant Breeding, Faculty of Agriculture (FoA), SKUAST–Kashmir, Sopore, India
| | - Kuan Yan
- School of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Key Laboratory of Sichuan Province for Refining Sichuan Tea, Yibin, China
| | - Jia Li
- School of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Key Laboratory of Sichuan Province for Refining Sichuan Tea, Yibin, China
| | - Khaled A. El-Tarabily
- Department of Biology, College of Science, United Arab Emirates University, Al Ain, United Arab Emirates
- Harry Butler Institute, Murdoch University, Murdoch, WA, Australia
| | - Manzar Abbas
- School of Agriculture, Forestry and Food Engineering, Yibin University, Yibin, China
- Key Laboratory of Sichuan Province for Refining Sichuan Tea, Yibin, China
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22
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Ahmad H, Zafar SA, Naeem MK, Shokat S, Inam S, Rehman MAU, Naveed SA, Xu J, Li Z, Ali GM, Khan MR. Impact of Pre-Anthesis Drought Stress on Physiology, Yield-Related Traits, and Drought-Responsive Genes in Green Super Rice. Front Genet 2022; 13:832542. [PMID: 35401708 PMCID: PMC8987348 DOI: 10.3389/fgene.2022.832542] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 01/27/2022] [Indexed: 12/12/2022] Open
Abstract
Optimum soil water availability is vital for maximum yield production in rice which is challenged by increasing spells of drought. The reproductive stage drought is among the main limiting factors leading to the drastic reduction in grain yield. The objective of this study was to investigate the molecular and morphophysiological responses of pre-anthesis stage drought stress in green super rice. The study assessed the performance of 26 rice lines under irrigated and drought conditions. Irrigated treatment was allowed to grow normally, while drought stress was imposed for 30 days at the pre-anthesis stage. Three important physiological traits including pollen fertility percentage (PFP), cell membrane stability (CMS), and normalized difference vegetative index (NDVI) were recorded at anthesis stage during the last week of drought stress. Agronomic traits of economic importance including grain yield were recorded at maturity stage. The analysis of variance demonstrated significant variation among the genotypes for most of the studied traits. Correlation and principal component analyses demonstrated highly significant associations of particular agronomic traits with grain yield, and genetic diversity among genotypes, respectively. Our study demonstrated a higher drought tolerance potential of GSR lines compared with local cultivars, mainly by higher pollen viability, plant biomass, CMS, and harvest index under drought. In addition, the molecular basis of drought tolerance in GSR lines was related to upregulation of certain drought-responsive genes including OsSADRI, OsDSM1, OsDT11, but not the DREB genes. Our study identified novel drought-responsive genes (LOC_Os11g36190, LOC_Os12g04500, LOC_Os12g26290, and LOC_Os02g11960) that could be further characterized using reverse genetics to be utilized in molecular breeding for drought tolerance.
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Affiliation(s)
- Hassaan Ahmad
- National Institute for Genomics and Advanced Biotechnology (NIGAB), National Agricultural Research Centre, Islamabad, Pakistan
| | - Syed Adeel Zafar
- National Institute for Genomics and Advanced Biotechnology (NIGAB), National Agricultural Research Centre, Islamabad, Pakistan
| | - Muhammad Kashif Naeem
- National Institute for Genomics and Advanced Biotechnology (NIGAB), National Agricultural Research Centre, Islamabad, Pakistan
| | - Sajid Shokat
- Nuclear Institute for Agriculture and Biology, Faisalabad, Pakistan
| | - Safeena Inam
- National Institute for Genomics and Advanced Biotechnology (NIGAB), National Agricultural Research Centre, Islamabad, Pakistan
| | - Malik Attique ur Rehman
- National Institute for Genomics and Advanced Biotechnology (NIGAB), National Agricultural Research Centre, Islamabad, Pakistan
| | - Shahzad Amir Naveed
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jianlong Xu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zhikang Li
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Ghulam Muhammad Ali
- National Institute for Genomics and Advanced Biotechnology (NIGAB), National Agricultural Research Centre, Islamabad, Pakistan
| | - Muhammad Ramzan Khan
- National Institute for Genomics and Advanced Biotechnology (NIGAB), National Agricultural Research Centre, Islamabad, Pakistan
- *Correspondence: Muhammad Ramzan Khan,
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23
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Exogenous Melatonin Improves Cold Tolerance of Strawberry (Fragaria × ananassa Duch.) through Modulation of DREB/CBF-COR Pathway and Antioxidant Defense System. HORTICULTURAE 2022. [DOI: 10.3390/horticulturae8030194] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The strawberry (Fragaria × ananassa Duch.) is an important fruit crop cultivated worldwide for its unique taste and nutritional properties. One of the major risks associated with strawberry production is cold damage. Recently, melatonin has emerged as a multifunctional signaling molecule that influences plant growth and development and reduces adverse consequences of cold stress. The present study was conducted to investigate the defensive role of melatonin and its potential interrelation with abscisic acid (ABA) in strawberry plants under cold stress. The results demonstrate that melatonin application conferred improved cold tolerance on strawberry seedlings by reducing malondialdehyde and hydrogen peroxide contents under cold stress. Conversely, pretreatment of strawberry plants with 100 μM melatonin increased soluble sugar contents and different antioxidant enzyme activities (ascorbate peroxidase, catalase, and peroxidase) and non-enzymatic antioxidant (ascorbate and glutathione) activities under cold stress. Furthermore, exogenous melatonin treatment stimulated the expression of the DREB/CBF—COR pathways’ downstream genes. Interestingly, ABA treatment did not change the expression of the DREB/CBF—COR pathway. These findings imply that the DREB/CBF-COR pathway confers cold tolerance on strawberry seedlings through exogenous melatonin application. Taken together, our results reveal that melatonin (100 μM) pretreatment protects strawberry plants from the damages induced by cold stress through enhanced antioxidant defense potential and modulating the DREB/CBF—COR pathway.
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24
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Influence of weather conditions on the activity and properties of alpha-amylase in maize grains. J Cereal Sci 2022. [DOI: 10.1016/j.jcs.2021.103403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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25
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Raza H, Khan MR, Zafar SA, Kirch HH, Bartles D. Aldehyde dehydrogenase 3I1 gene is recruited in conferring multiple abiotic stress tolerance in plants. PLANT BIOLOGY (STUTTGART, GERMANY) 2022; 24:85-94. [PMID: 34670007 DOI: 10.1111/plb.13337] [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: 05/12/2021] [Accepted: 08/09/2021] [Indexed: 06/13/2023]
Abstract
Plant growth and productivity is restricted by a multitude of abiotic stresses. These stresses negatively affect physiological and metabolic pathways, leading to the production of many harmful substances like ROS, lipid peroxides and aldehydes. This study was conducted to investigate the role of Arabidopsis ALDH3I1 gene in multiple abiotic stress tolerance. Transgenic tobacco plants were generated that overexpress the ALDH3I1 gene driven by the CaMV35S promoter and evaluated under different abiotic stresses, namely salt, drought, cold and oxidative stress. Tolerance to stress was evaluated based on responses of various growth and physiological traits under stress condition. Transgenic plants displayed elevated ALDH3I1 transcript levels compared to WT plants. The constitutive ectopic expression of ALDH3I1 conferred increased tolerance to salt, drought, cold and oxidative stresses in transgenic plants, along with improved plant growth. Transgenic plants overexpressing ALDH3I1 had higher chlorophyll content, photosynthesis rate and proline, and less accumulation of ROS and malondialdehyde compared to the WT, which contributed to stress tolerance in transgenic plants. Our results further revealed that ALDH3I1 had a positive effect on CO2 assimilation rate in plants under abiotic stress conditions. Overall, this study revealed that ALDH3I1 positively regulates abiotic stress tolerance in plants, and has future implications in producing transgenic cereal and horticultural plants tolerant to abiotic stresses.
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Affiliation(s)
- H Raza
- Institute for Molecular Physiology & Biotechnology of Plants (IMBIO), University of Bonn, Bonn, Germany
| | - M R Khan
- National Institute for Genomics and Advanced Biotechnology, National Agricultural Research Centre, Islamabad, Pakistan
| | - S A Zafar
- National Institute for Genomics and Advanced Biotechnology, National Agricultural Research Centre, Islamabad, Pakistan
| | - H H Kirch
- Institute for Molecular Physiology & Biotechnology of Plants (IMBIO), University of Bonn, Bonn, Germany
| | - D Bartles
- Institute for Molecular Physiology & Biotechnology of Plants (IMBIO), University of Bonn, Bonn, Germany
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26
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Hussain T, Akram Z, Shabbir G, Manaf A, Ahmed M. Identification of drought tolerant Chickpea genotypes through multi trait stability index. Saudi J Biol Sci 2021; 28:6818-6828. [PMID: 34866982 PMCID: PMC8626221 DOI: 10.1016/j.sjbs.2021.07.056] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 07/15/2021] [Accepted: 07/18/2021] [Indexed: 12/02/2022] Open
Abstract
Drought is a major and constantly increasing abiotic stress factor, thus limiting chickpea production. Like other crops, Kabuli Chickpea genotypes are screened for drought stress through Multi-environment trials (METs). Although, METs analysis is generally executed taking into account only one trait, which provides less significant reliability for the recommendation of genotypes as compared to multi trait-based analysis. Multi trait-based analysis could be used to recommend genotypes across diverse environments. Hence, current research was conducted for selection of superior genotypes through multi-trait stability index (MTSI) by using mixed and fixed effect models under six diverse environments. The genotypic stability was computed for all traits individually using the weighted average of absolute scores from the singular value decomposition of the matrix of best linear unbiased predictions for the genotype vs environment interaction (GEI) effects produced by a linear mixed-effect model index. A superiority index, WAASBY was measured to reflect the MPS (Mean performance and stability). The selection differential for the WAASBY index was 11.2%, 18.49% and 23.30% for grain yield (GY), primary branches per plant (PBP) and Stomatal Conductance (STOMA) respectively. Positive selection differential (0.80% ≤ selection differential ≤ 13.00%) were examined for traits averaged desired to be increased and negative (-0.57% ≤ selection differential ≤ -0.23%) for those traits desired to be reduced. The MTSI may be valuable to the plant breeders for the selection of genotypes based on many characters as being strong and simple selection process. Analysis of MTSI for multiple environments revealed that, the genotypes G20, G86, G31, G28, G116, G12, G105, G45, G50, G10, G30, G117, G81, G48, G85, G17, G32, G4, and G37 were the most stable and high yielding out of 120 chickpea genotypes, probably due to high MPS of selected traits under various environments. It is concluded that identified traits can be utilized as genitors in hybridization programs for the development of drought tolerant Kabuli Chickpea breeding material.
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Affiliation(s)
- Tamoor Hussain
- Department of Plant Breeding and Genetics, PMAS Arid Agriculture University, Rawalpindi 46300, Pakistan
| | - Zahid Akram
- Department of Plant Breeding and Genetics, PMAS Arid Agriculture University, Rawalpindi 46300, Pakistan
| | - Ghulam Shabbir
- Department of Plant Breeding and Genetics, PMAS Arid Agriculture University, Rawalpindi 46300, Pakistan
| | - Abdul Manaf
- Department of Agronomy, PMAS-Arid Agriculture University, Rawalpindi 46300, Pakistan
| | - Mukhtar Ahmed
- Department of Agronomy, PMAS-Arid Agriculture University, Rawalpindi 46300, Pakistan.,Department of Agricultural Research for Northern Sweden, Swedish University of Agricultural Sciences, 90183 Umeå, Sweden
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Li X, Fan J, Luo S, Yin L, Liao H, Cui X, He J, Zeng Y, Qu J, Bu Z. Comparative transcriptome analysis identified important genes and regulatory pathways for flower color variation in Paphiopedilum hirsutissimum. BMC PLANT BIOLOGY 2021; 21:495. [PMID: 34706650 PMCID: PMC8549352 DOI: 10.1186/s12870-021-03256-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 10/08/2021] [Indexed: 05/25/2023]
Abstract
BACKGROUND Paphiopedilum hirsutissimum is a member of Orchidaceae family that is famous for its ornamental value around the globe, it is vulnerable due to over-exploitation and was listed in Appendix I of the Convention on International Trade in Endangered Species of Wild Fauna and Flora, which prevents its trade across borders. Variation in flower color that gives rise to different flower patterns is a major trait contributing to its high ornamental value. However, the molecular mechanism underlying color formation in P. hirsutissimum still remains unexplored. In the present study, we exploited natural variation in petal and labellum color of Paphiopedilum plants and used comparative transcriptome analysis as well as pigment measurements to explore the important genes, metabolites and regulatory pathways linked to flower color variation in P. hirsutissimum. RESULT We observed that reduced anthocyanin and flavonoid contents along with slightly higher carotenoids are responsible for albino flower phenotype. Comparative transcriptome analysis identified 3287 differentially expressed genes (DEGs) among normal and albino labellum, and 3634 DEGs between normal and albino petals. Two genes encoding for flavanone 3-hydroxylase (F3H) and one gene encoding for chalcone synthase (CHS) were strongly downregulated in albino labellum and petals compared to normal flowers. As both F3H and CHS catalyze essentially important steps in anthocyanin biosynthesis pathway, downregulation of these genes is probably leading to albino flower phenotype via down-accumulation of anthocyanins. However, we observed the downregulation of major carotenoid biosynthesis genes including VDE, NCED and ABA2 which was inconsistent with the increased carotenoid accumulation in albino flowers, suggesting that carotenoid accumulation was probably controlled at post-transcriptional or translational level. In addition, we identified several key transcription factors (MYB73, MYB61, bHLH14, bHLH106, MADS-SOC1, AP2/ERF1, ERF26 and ERF87) that may regulate structural genes involved in flower color formation in P. hirsutissimum. Importantly, over-expression of some of these candidate TFs increased anthocyanin accumulation in tobacco leaves which provided important evidence for the role of these TFs in flower color formation probably via regulating key structural genes of the anthocyanin pathway. CONCLUSION The genes identified here could be potential targets for breeding P. hirsutissimum with different flower color patterns by manipulating the anthocyanin and carotenoid biosynthesis pathways.
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Affiliation(s)
- Xiuling Li
- Flower Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, 530007, Guangxi, China
| | - Jizheng Fan
- Flower Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, 530007, Guangxi, China
| | - Shuming Luo
- Flower Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, 530007, Guangxi, China
| | - Ling Yin
- Guangxi Key Crop Genetic Improvement and Biotechnology Laboratory, Guangxi Academy of Agricultural Sciences, Nanning, 530007, Guangxi, China
| | - Hongying Liao
- Flower Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, 530007, Guangxi, China
| | - Xueqiang Cui
- Flower Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, 530007, Guangxi, China
| | - Jingzhou He
- Flower Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, 530007, Guangxi, China
| | - Yanhua Zeng
- Flower Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, 530007, Guangxi, China
| | - Junjie Qu
- Guangxi Key Crop Genetic Improvement and Biotechnology Laboratory, Guangxi Academy of Agricultural Sciences, Nanning, 530007, Guangxi, China.
| | - Zhaoyang Bu
- Flower Research Institute, Guangxi Academy of Agricultural Sciences, Nanning, 530007, Guangxi, China.
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28
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Hime GR, Stonehouse SLA, Pang TY. Alternative models for transgenerational epigenetic inheritance: Molecular psychiatry beyond mice and man. World J Psychiatry 2021; 11:711-735. [PMID: 34733638 PMCID: PMC8546770 DOI: 10.5498/wjp.v11.i10.711] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 07/19/2021] [Accepted: 08/25/2021] [Indexed: 02/06/2023] Open
Abstract
Mental illness remains the greatest chronic health burden globally with few in-roads having been made despite significant advances in genomic knowledge in recent decades. The field of psychiatry is constantly challenged to bring new approaches and tools to address and treat the needs of vulnerable individuals and subpopulations, and that has to be supported by a continuous growth in knowledge. The majority of neuropsychiatric symptoms reflect complex gene-environment interactions, with epigenetics bridging the gap between genetic susceptibility and environmental stressors that trigger disease onset and drive the advancement of symptoms. It has more recently been demonstrated in preclinical models that epigenetics underpins the transgenerational inheritance of stress-related behavioural phenotypes in both paternal and maternal lineages, providing further supporting evidence for heritability in humans. However, unbiased prospective studies of this nature are practically impossible to conduct in humans so preclinical models remain our best option for researching the molecular pathophysiologies underlying many neuropsychiatric conditions. While rodents will remain the dominant model system for preclinical studies (especially for addressing complex behavioural phenotypes), there is scope to expand current research of the molecular and epigenetic pathologies by using invertebrate models. Here, we will discuss the utility and advantages of two alternative model organisms–Caenorhabditis elegans and Drosophila melanogaster–and summarise the compelling insights of the epigenetic regulation of transgenerational inheritance that are potentially relevant to human psychiatry.
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Affiliation(s)
- Gary R Hime
- Department of Anatomy and Physiology, The University of Melbourne, Parkville 3010, VIC, Australia
| | - Sophie LA Stonehouse
- Mental Health Theme, The Florey Institute of Neuroscience and Mental Health, Parkville 3052, VIC, Australia
| | - Terence Y Pang
- Department of Anatomy and Physiology, The University of Melbourne, Parkville 3010, VIC, Australia
- Mental Health Theme, The Florey Institute of Neuroscience and Mental Health, Parkville 3052, VIC, Australia
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29
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Dar ZA, Dar SA, Khan JA, Lone AA, Langyan S, Lone BA, Kanth RH, Iqbal A, Rane J, Wani SH, Alfarraj S, Alharbi SA, Brestic M, Ansari MJ. Identification for surrogate drought tolerance in maize inbred lines utilizing high-throughput phenomics approach. PLoS One 2021; 16:e0254318. [PMID: 34314420 PMCID: PMC8315520 DOI: 10.1371/journal.pone.0254318] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 06/24/2021] [Indexed: 11/20/2022] Open
Abstract
Screening for drought tolerance requires precise techniques like phonemics, which is an emerging science aimed at non-destructive methods allowing large-scale screening of genotypes. Large-scale screening complements genomic efforts to identify genes relevant for crop improvement. Thirty maize inbred lines from various sources (exotic and indigenous) maintained at Dryland Agriculture Research Station were used in the current study. In the automated plant transport and imaging systems (LemnaTec Scanalyzer system for large plants), top and side view images were taken of the VIS (visible) and NIR (near infrared) range of the light spectrum to capture phenes. All images were obtained with a thermal imager. All sensors were used to collect images one day after shifting the pots from the greenhouse for 11 days. Image processing was done using pre-processing, segmentation and flowered by features' extraction. Different surrogate traits such as pixel area, plant aspect ratio, convex hull ratio and calliper length were estimated. A strong association was found between canopy temperature and above ground biomass under stress conditions. Promising lines in different surrogates will be utilized in breeding programmes to develop mapping populations for traits of interest related to drought resilience, in terms of improved tissue water status and mapping of genes/QTLs for drought traits.
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Affiliation(s)
- Zahoor A Dar
- Dryland Agricultural Research Station, Sher-e-Kashmir University of Agricultural Sciences &Technology-Kashmir, Rangreth Srinagar, Jammu and Kashmir, India
| | - Showket A Dar
- Department of Entomology, Sher-e-Kashmir University of Agricultural Sciences & Technology of Kashmir, Srinagar-Kargil, Ladakh, India
| | - Jameel A Khan
- Department of Biotechnology, University of Agricultural Sciences, Bangalore, India
| | - Ajaz A Lone
- Dryland Agricultural Research Station, Sher-e-Kashmir University of Agricultural Sciences &Technology-Kashmir, Rangreth Srinagar, Jammu and Kashmir, India
| | - Sapna Langyan
- ICAR-National Bureau for Plant Genetic Resources, New Delhi, India
| | - B A Lone
- Department of Agronomy, Sher-e-Kashmir University of Agricultural Sciences &Technology-Kashmir, Srinagar, Jammu and Kashmir, India
| | - R H Kanth
- Department of Agronomy, Sher-e-Kashmir University of Agricultural Sciences &Technology-Kashmir, Wadura Sopore, Jammu and Kashmir, India
| | - Asif Iqbal
- Department of Soil Science, Sher-e-Kashmir University of Agricultural Sciences &Technology-Kashmir, Srinagar, Jammu and Kashmir, India
| | - Jagdish Rane
- Department of Drought Science, ICAR-NIASM, Baramati, New Delhi, India
| | - Shabir H Wani
- MRCFCF, Sher-e-Kashmir University of Agricultural Sciences &Technology-Kashmir, Srinagar, Jammu and Kashmir, India
| | - Saleh Alfarraj
- Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Sulaiman Ali Alharbi
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Marian Brestic
- Department of Plant Physiology, Slovak University of Agriculture, Nitra, Slovakia
| | - Mohammad Javed Ansari
- Department of Botany, Hindu College Moradabad (Mahatma Jyotiba Phule Rohilkhand University Bareilly), Moradabad, India
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