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Ganie SA, McMulkin N, Devoto A. The role of priming and memory in rice environmental stress adaptation: Current knowledge and perspectives. PLANT, CELL & ENVIRONMENT 2024; 47:1895-1915. [PMID: 38358119 DOI: 10.1111/pce.14855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/21/2023] [Accepted: 01/31/2024] [Indexed: 02/16/2024]
Abstract
Plant responses to abiotic stresses are dynamic, following the unpredictable changes of physical environmental parameters such as temperature, water and nutrients. Physiological and phenotypical responses to stress are intercalated by periods of recovery. An earlier stress can be remembered as 'stress memory' to mount a response within a generation or transgenerationally. The 'stress priming' phenomenon allows plants to respond quickly and more robustly to stressors to increase survival, and therefore has significant implications for agriculture. Although evidence for stress memory in various plant species is accumulating, understanding of the mechanisms implicated, especially for crops of agricultural interest, is in its infancy. Rice is a major food crop which is susceptible to abiotic stresses causing constraints on its cultivation and yield globally. Advancing the understanding of the stress response network will thus have a significant impact on rice sustainable production and global food security in the face of climate change. Therefore, this review highlights the effects of priming on rice abiotic stress tolerance and focuses on specific aspects of stress memory, its perpetuation and its regulation at epigenetic, transcriptional, metabolic as well as physiological levels. The open questions and future directions in this exciting research field are also laid out.
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Affiliation(s)
- Showkat Ahmad Ganie
- Department of Biological Sciences, Plant Molecular Science and Centre of Systems and Synthetic Biology, Royal Holloway University of London, Egham, Surrey, UK
| | - Nancy McMulkin
- Department of Biological Sciences, Plant Molecular Science and Centre of Systems and Synthetic Biology, Royal Holloway University of London, Egham, Surrey, UK
| | - Alessandra Devoto
- Department of Biological Sciences, Plant Molecular Science and Centre of Systems and Synthetic Biology, Royal Holloway University of London, Egham, Surrey, UK
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Noureen S, Iqbal A, Muqeet HA. Potential of Drought Tolerant Rhizobacteria Amended with Biochar on Growth Promotion in Wheat. PLANTS (BASEL, SWITZERLAND) 2024; 13:1183. [PMID: 38732400 PMCID: PMC11085571 DOI: 10.3390/plants13091183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 04/13/2024] [Accepted: 04/20/2024] [Indexed: 05/13/2024]
Abstract
Drought stress is the prime obstacle for worldwide agricultural production and necessitates innovative strategies for enhancing crop resilience. This study explores the efficacy of plant growth-promoting rhizobacteria (PGPR) and biochar (BC) as sustainable amendments for mitigating the effects of drought on wheat growth. Multiple experiments were carried out on isolated strains to assess their drought tolerance potential and multiple plant growth-promoting attributes. Experiments in the laboratory and natural environment were conducted to assess the impact of plant growth-promoting rhizobacteria, biochar, and their synergistic application on various growth parameters of wheat. The results revealed that the drought-tolerant PGPR strains (Bacillus subtilis and Bacillus tequilensis), alongside biochar (rice husk), alleviated the phytotoxic impact of drought by increasing the root length from 17.0% to 70.0% and shoot length from 30.0% to 82.0% as compared to un-inoculated stressed controls. The total chlorophyll and carotenoid contents of the plants were substantially increased to 477% and 423%, respectively, when biochar and PGPR were applied synergistically. Significant enhancements in membrane stability index, relative water content, proline, and sugar level were achieved by combining biochar and bacterial strains, resulting in increases of 19.5%, 37.9%, 219%, and 300%, respectively. The yield of wheat in terms of plant height, spike length, number of spikelets per spike, and number of grains per spike was enhanced from 26.7% to 44.6%, 23.5% to 62.7%, 91.5% to 154%, and 137% to 182%, respectively. It was concluded that the biochar-based application of PGPR induced drought tolerance in wheat under water deficit conditions, ultimately improving the production and yield of wheat.
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Affiliation(s)
- Sidra Noureen
- Department of Microbiology and Molecular Genetics, The Women University, Multan 66000, Pakistan;
| | - Atia Iqbal
- Department of Microbiology and Molecular Genetics, The Women University, Multan 66000, Pakistan;
| | - Hafiz Abdul Muqeet
- Department of Electrical Engineering and Technology, Punjab Tianjin University of Technology, Lahore 53720, Pakistan
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Gui YW, Batool A, El-Keblawy A, Sheteiwy MS, Yang YM, Zhao L, Duan HX, Chang SJ, Xiong YC. Response of source-sink relationship to progressive water deficit in the domestication of dryland wheat. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 207:108380. [PMID: 38244389 DOI: 10.1016/j.plaphy.2024.108380] [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: 09/23/2023] [Revised: 01/13/2024] [Accepted: 01/16/2024] [Indexed: 01/22/2024]
Abstract
It is crucial to clarify the physiological responses of wheat (T. aestivum) plants to source-sink manipulation and assimilation transportation under drought stress during domestication of dryland wheat. In this research, a two-year field experiment was conducted using nine wheat cultivars in a semiarid site of northwest China. The source-sink manipulation treatments including defoliation of flag leaves and 50% removal of ears were applied at the anthesis stage under two levels of drought stress conditions i.e. progressive water supply (PWS) and rainfed drought treatment (RDT). Our results indicated that drought stress reduced the dry weight of leaves, sheaths and stems, as well as caused a significant yield reduction. High ploidy wheat exhibits a greater capacity to sustain higher grain yields when subjected to drought stress, primarily due to its stronger buffer capacity between source supply and sink demand. All wheat species with different ploidy levels had a certain degree of source limitation and sink restriction. During the domestication of wheat, the type of source and sink might be ploidy-dependent with progressive water deficit, but similar interactive relationships. The source-sink ratio of tetraploid species was the largest, while that of hexaploid species was the lowest.
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Affiliation(s)
- Yan-Wen Gui
- Department of Bioengineering, School of Biological and Pharmaceutical Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - Asfa Batool
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, 730000, Gansu, China
| | - Ali El-Keblawy
- Department of Integrative Agriculture, College of Agriculture and Veterinary Medicine, United Arab, Emirates University, Al-Ain, Abu-Dhabi, UAE
| | - Mohamed S Sheteiwy
- Department of Integrative Agriculture, College of Agriculture and Veterinary Medicine, United Arab, Emirates University, Al-Ain, Abu-Dhabi, UAE; Department of Agronomy, Faculty of Agriculture, Mansoura University, Mansoura, 35516, Egypt
| | - Yu-Miao Yang
- Institute of Biology, Gansu Academy of Sciences, Lanzhou, 730000, China
| | - Ling Zhao
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, 730000, Gansu, China
| | - Hai-Xia Duan
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, 730000, Gansu, China; State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, 810016, China
| | - Si-Jing Chang
- Department of Bioengineering, School of Biological and Pharmaceutical Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, China
| | - You-Cai Xiong
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, College of Ecology, Lanzhou University, Lanzhou, 730000, Gansu, China.
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