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Zheng S, Liu C, Zhou Z, Xu L, Lai Z. Physiological and Transcriptome Analyses Reveal the Protective Effect of Exogenous Trehalose in Response to Heat Stress in Tea Plant ( Camellia sinensis). PLANTS (BASEL, SWITZERLAND) 2024; 13:1339. [PMID: 38794411 PMCID: PMC11125205 DOI: 10.3390/plants13101339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/28/2024] [Accepted: 05/11/2024] [Indexed: 05/26/2024]
Abstract
It is well known that application of exogenous trehalose can enhance the heat resistance of plants. To investigate the underlying molecular mechanisms by which exogenous trehalose induces heat resistance in C. sinensis, a combination of physiological and transcriptome analyses was conducted. The findings revealed a significant increase in the activity of superoxide dismutase (SOD) and peroxidase (POD) upon treatment with 5.0 mM trehalose at different time points. Moreover, the contents of proline (PRO), endogenous trehalose, and soluble sugar exhibited a significant increase, while malondialdehyde (MDA) content decreased following treatment with 5.0 mM trehalose under 24 h high-temperature stress (38 °C/29 °C, 12 h/12 h). RNA-seq analysis demonstrated that the differentially expressed genes (DEGs) were significantly enriched in the MAPK pathway, plant hormone signal transduction, phenylpropanoid biosynthesis, flavone and flavonol biosynthesis, flavonoid biosynthesis, and the galactose metabolism pathway. The capability to scavenge free radicals was enhanced, and the expression of a heat shock factor gene (HSFB2B) and two heat shock protein genes (HSP18.1 and HSP26.5) were upregulated in the tea plant. Consequently, it was concluded that exogenous trehalose contributes to alleviating heat stress in C. sinensis. Furthermore, it regulates the expression of genes involved in diverse pathways crucial for C. sinensis under heat-stress conditions. These findings provide novel insights into the molecular mechanisms underlying the alleviation of heat stress in C. sinensis with trehalose.
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Affiliation(s)
- Shizhong Zheng
- College of Biological Science and Engineering, Ningde Normal University, Ningde 352100, China; (S.Z.); (C.L.); (Z.Z.); (L.X.)
| | - Chufei Liu
- College of Biological Science and Engineering, Ningde Normal University, Ningde 352100, China; (S.Z.); (C.L.); (Z.Z.); (L.X.)
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Ziwei Zhou
- College of Biological Science and Engineering, Ningde Normal University, Ningde 352100, China; (S.Z.); (C.L.); (Z.Z.); (L.X.)
| | - Liyi Xu
- College of Biological Science and Engineering, Ningde Normal University, Ningde 352100, China; (S.Z.); (C.L.); (Z.Z.); (L.X.)
| | - Zhongxiong Lai
- Institute of Horticultural Biotechnology, Fujian Agriculture and Forestry University, Fuzhou 350002, China
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Ali J, Mukarram M, Ojo J, Dawam N, Riyazuddin R, Ghramh HA, Khan KA, Chen R, Kurjak D, Bayram A. Harnessing Phytohormones: Advancing Plant Growth and Defence Strategies for Sustainable Agriculture. PHYSIOLOGIA PLANTARUM 2024; 176:e14307. [PMID: 38705723 DOI: 10.1111/ppl.14307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Revised: 04/07/2024] [Accepted: 04/10/2024] [Indexed: 05/07/2024]
Abstract
Phytohormones, pivotal regulators of plant growth and development, are increasingly recognized for their multifaceted roles in enhancing crop resilience against environmental stresses. In this review, we provide a comprehensive synthesis of current research on utilizing phytohormones to enhance crop productivity and fortify their defence mechanisms. Initially, we introduce the significance of phytohormones in orchestrating plant growth, followed by their potential utilization in bolstering crop defences against diverse environmental stressors. Our focus then shifts to an in-depth exploration of phytohormones and their pivotal roles in mediating plant defence responses against biotic stressors, particularly insect pests. Furthermore, we highlight the potential impact of phytohormones on agricultural production while underscoring the existing research gaps and limitations hindering their widespread implementation in agricultural practices. Despite the accumulating body of research in this field, the integration of phytohormones into agriculture remains limited. To address this discrepancy, we propose a comprehensive framework for investigating the intricate interplay between phytohormones and sustainable agriculture. This framework advocates for the adoption of novel technologies and methodologies to facilitate the effective deployment of phytohormones in agricultural settings and also emphasizes the need to address existing research limitations through rigorous field studies. By outlining a roadmap for advancing the utilization of phytohormones in agriculture, this review aims to catalyse transformative changes in agricultural practices, fostering sustainability and resilience in agricultural settings.
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Affiliation(s)
- Jamin Ali
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Mohammad Mukarram
- Food and Plant Biology Group, Department of Plant Biology, Universidad de la República, Montevideo, Uruguay
| | - James Ojo
- Department of Crop Production, Kwara State University, Malete, Nigeria
| | - Nancy Dawam
- Department of Zoology, Faculty of Natural and Applied Sciences, Plateau State University Bokkos, Diram, Nigeria
| | | | - Hamed A Ghramh
- Centre of Bee Research and its Products, Research Centre for Advanced Materials Science, King Khalid University, Abha, Saudi Arabia
- Biology Department, Faculty of Science, King Khalid University, Abha, Saudi Arabia
| | - Khalid Ali Khan
- Centre of Bee Research and its Products, Research Centre for Advanced Materials Science, King Khalid University, Abha, Saudi Arabia
- Applied College, King Khalid University, Abha, Saudi Arabia
| | - Rizhao Chen
- College of Plant Protection, Jilin Agricultural University, Changchun, PR China
| | - Daniel Kurjak
- Institute of Forest Ecology, Slovak Academy of Sciences, Zvolen, Slovakia
- Faculty of Forestry, Technical University in Zvolen, Zvolen, Slovakia
| | - Ahmet Bayram
- Plant Protection, Faculty of Agriculture, Technical University in Zvolen, Zvolen, Slovakia
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Ahmad N, Jiang Z, Zhang L, Hussain I, Yang X. Insights on Phytohormonal Crosstalk in Plant Response to Nitrogen Stress: A Focus on Plant Root Growth and Development. Int J Mol Sci 2023; 24:ijms24043631. [PMID: 36835044 PMCID: PMC9958644 DOI: 10.3390/ijms24043631] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/08/2023] [Accepted: 02/09/2023] [Indexed: 02/15/2023] Open
Abstract
Nitrogen (N) is a vital mineral component that can restrict the growth and development of plants if supplied inappropriately. In order to benefit their growth and development, plants have complex physiological and structural responses to changes in their nitrogen supply. As higher plants have multiple organs with varying functions and nutritional requirements, they coordinate their responses at the whole-plant level based on local and long-distance signaling pathways. It has been suggested that phytohormones are signaling substances in such pathways. The nitrogen signaling pathway is closely associated with phytohormones such as auxin (AUX), abscisic acid (ABA), cytokinins (CKs), ethylene (ETH), brassinosteroid (BR), strigolactones (SLs), jasmonic acid (JA), and salicylic acid (SA). Recent research has shed light on how nitrogen and phytohormones interact to modulate physiology and morphology. This review provides a summary of the research on how phytohormone signaling affects root system architecture (RSA) in response to nitrogen availability. Overall, this review contributes to identifying recent developments in the interaction between phytohormones and N, as well as serving as a foundation for further study.
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Affiliation(s)
- Nazir Ahmad
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Sugarcane Biology, Guangxi University, Nanning 530004, China
| | - Zhengjie Jiang
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Sugarcane Biology, Guangxi University, Nanning 530004, China
| | - Lijun Zhang
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Sugarcane Biology, Guangxi University, Nanning 530004, China
| | - Iqbal Hussain
- Department of Horticulture, Institute of Vegetable Science, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Xiping Yang
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi Key Laboratory of Sugarcane Biology, Guangxi University, Nanning 530004, China
- National Demonstration Center for Experimental Plant Science Education, College of Agriculture, Guangxi University, Nanning 530004, China
- Correspondence:
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