气候变化领域集成服务门户(CCPortal): Salicylic acid and chitosan mitigate high temperature stress of rice via growth improvement, physio-biochemical adjustments and enhanced antioxidant activity

CCPortal

DOI	10.1016/j.stress.2023.100343
	Salicylic acid and chitosan mitigate high temperature stress of rice via growth improvement, physio-biochemical adjustments and enhanced antioxidant activity
	Ahmed, Sujat; Ahmed, Sheikh Faruk; Biswas, Arindam; Sultana, Amena; Issak, Mohammad
发表日期	2024
ISSN	2667-064X
起始页码	11
卷号	11
英文摘要	Sustainably increasing rice (Oryza sativa L.) becomes more challenging due to environmental stresses. High temperature stress resulting from global warming impact of climate change is highly damaging as it can cause growth and yield reduction of rice via cellular and physio-biochemical impairments. Application of either salicylic acid or chitosan can possibly increase plant's tolerance to different abiotic stresses; however, their combined mitigation effects remained inadequately explored. Thus, the objective of the current study was to evaluate the mitigation potential of combined salicylic acid and chitosan against high temperature stress of rice. The experiment was conducted in a factorial combination of two temperature regimes (optimum temperature [control] and high temperature); two salicylic acid levels (-SA: 0 mg L-1 and +SA: 140 mg L-1); and two chitosan levels (-Ch: 0 mg L-1, +Ch: 100 mg L-1) following a completely randomized design. High temperature impaired rice growth and productivity by negatively influencing all tested parameters; however, salicylic acid and chitosan could significantly mitigate those impairments. The mitigation on growth and yield contributing parameters was recorded at best 11 %, 21 %, 12 %, 75 %, 61 %, 46 %, 27 %, and 43 % for plant height, leaf area, shoot dry matter, pollen viability, effective tiller percentage, filled grain percentage, 1000 -grain weight, and grain yield respectively. Highest alleviation in physio-biochemical parameters was also found at best 35 %, 68 %, and 67 % for leaf greenness, net photosynthetic rate, and stomatal conductance respectively with 28 % and 60 % respective increase in transpiration rate and proline concentration. Superoxide dismutase, catalase, ascorbate peroxidase and peroxidase activity were also boosted as high as 1.6 -folds, 1.4 -folds, 1.9 -folds, and 2.6 -folds respectively with subsequent reduction of 32 % lipid peroxidation and 34 % hydrogen peroxide concentration. For all tested parameters, the best positive effects were observed under combined salicylic acid and chitosan treatment. Individually, salicylic acid was found more effective than chitosan; however, their combined application resulted in significantly better alleviation responses over their individual application for most studied parameters. Our findings would contribute in present understanding of high temperature stress and would also help in strategizing better -suited management practices toward sustainable rice productivity.
英文关键词	Antioxidant activity; Chitosan; High temperature stress; Oryza sativa L.; Salicylic acid
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:001154917500001
来源期刊	PLANT STRESS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/291555
作者单位	Sher-e-Bangla Agricultural University (SAU); Sher-e-Bangla Agricultural University (SAU); Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU); Bangladesh Agricultural Research Institute (BARI); Bangladesh Rice Research Institute (BRRI)
推荐引用方式 GB/T 7714	Ahmed, Sujat,Ahmed, Sheikh Faruk,Biswas, Arindam,et al. Salicylic acid and chitosan mitigate high temperature stress of rice via growth improvement, physio-biochemical adjustments and enhanced antioxidant activity[J],2024,11.
APA	Ahmed, Sujat,Ahmed, Sheikh Faruk,Biswas, Arindam,Sultana, Amena,&Issak, Mohammad.(2024).Salicylic acid and chitosan mitigate high temperature stress of rice via growth improvement, physio-biochemical adjustments and enhanced antioxidant activity.PLANT STRESS,11.
MLA	Ahmed, Sujat,et al."Salicylic acid and chitosan mitigate high temperature stress of rice via growth improvement, physio-biochemical adjustments and enhanced antioxidant activity".PLANT STRESS 11(2024).