Exogenous salicylic acid ameliorates heat stress-induced damages and improves growth and photosynthetic efficiency in alfalfa (Medicago sativa L.)
文献类型：期刊论文
| 作者 | Wassie, Misganaw1,2,3; Zhang, Weihong1,2; Zhang, Qiang1,2; Ji, Kang1,2,3; Cao, Liwen1,2; Chen, Liang1,2 |
| 刊名 | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
 |
| 出版日期 | 2020-03-15 |
| 卷号 | 191页码:10 |
| 关键词 | Alfalfa Salicylic acid Heat stress Photosynthetic efficiency Chlorophyll content Antioxidant enzymes |
| ISSN号 | 0147-6513 |
| DOI | 10.1016/j.ecoenv.2020.110206 |
| 英文摘要 | Heat stress is found to be a detrimental factor for growth and development of alfalfa (Medicago saliva L.) which is tremendously invaluable forage due to its high feed value and yield potential. Salicylic acid (SA) has been reported to play a pivotal role in the regulation of plants biotic and abiotic stress response. However, the role of exogenous SA in protecting alfalfa from heat-induced damage has rarely been studied. In this study, four-weekold alfalfa seedlings were treated with 0.25 mM or 0.5 mM SA five days prior to high stress treatment (three day), and various growth and physiological traits were measured. The results showed that exogenous SA pretreatment could improve leaf morphology, plant height, biomass, chlorophyll content, and photosynthetic efficiency of alfalfa under heat stress. Meanwhile, SA could alleviate heat-induced membrane damage by reducing electrolyte leakage (EL) and malondialdehyde (MDA) content, and regulate the activities of antioxidant enzymes including catalase (CAT), superoxide dismutase (SOD), and peroxidase (POD). The results revealed that exogenous SA application enhanced alfalfa heat tolerance by modulating various morphological and physiological characteristics under heat stress, with more prominent effect at lower concentration (0.25 mM). Overall, this study provides fundamental insights into the SA-mediated physiological adaptation of alfalfa plants to heat stress, which could have useful implication in managing other plants which are suffering global warming. |
| 资助项目 | National Natural Science Foundation of China (NSFC)[31672482] ; National Natural Science Foundation of China (NSFC)[31401915] |
| WOS研究方向 | Environmental Sciences & Ecology ; Toxicology |
| 语种 | 英语 |
| WOS记录号 | WOS:000514011400007 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/14978]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Cao, Liwen; Chen, Liang |
| 作者单位 | 1.Chinese Acad Sci, Ctr Econ Bot, Core Bot Gardens, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Innovat Acad Seed Design, CAS Key Lab Plant Germplasm Enhancement & Special, Wuhan Bot Garden, Wuhan 430074, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wassie, Misganaw,Zhang, Weihong,Zhang, Qiang,et al. Exogenous salicylic acid ameliorates heat stress-induced damages and improves growth and photosynthetic efficiency in alfalfa (Medicago sativa L.)[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2020,191:10. |
| APA | Wassie, Misganaw,Zhang, Weihong,Zhang, Qiang,Ji, Kang,Cao, Liwen,&Chen, Liang.(2020).Exogenous salicylic acid ameliorates heat stress-induced damages and improves growth and photosynthetic efficiency in alfalfa (Medicago sativa L.).ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,191,10. |
| MLA | Wassie, Misganaw,et al."Exogenous salicylic acid ameliorates heat stress-induced damages and improves growth and photosynthetic efficiency in alfalfa (Medicago sativa L.)".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 191(2020):10. |
入库方式： OAI收割
来源：武汉植物园
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