Yuwei Yang, Mingzhou Gu, Junfeng Lu, Xiaotong Li, Dalin Liu, Xin'e Li, Lin Wang
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GR24 alleviates the adverse effects of drought stress on physiology and photosystem II function in alfalfa (Medicago Sativa L.)
Drought is a major environmental stress that limits growth and development of plants. Strigolactone, a kind of carotenoid-derived sesquiterpenoid hormone, plays an important role in resisting abiotic stress for plants. In this study, alfalfa (Medicago Sativa L.) WL-712 was sprayed with GR24 (a synthetic strigolactone analog) at the concentration of 0.1 μM for 3 days under drought stress for 1 week. The results showed that GR24 treatment could increase the contents of soluble protein and soluble sugar and decrease the content of malondialdehyde, which negatively affected by drought stress in alfalfa. In addition, GR24 treatment significantly enhanced superoxide dismutase and the activities of peroxidase and catalase in alfalfa. The JIP test analysis also indicated that GR24 could alleviate photosynthesis negatively affected by drought stress. The expressions of genes related to photosynthesis were consistent with the changes of physiological indexes in alfalfa. This study indicated that GR24 could alleviate the adverse effects of drought stress on physiology and photosystem II function in alfalfa leaves.
Grassland ScienceAgricultural and Biological Sciences-Agronomy and Crop Science
CiteScore
2.70
自引率
7.70%
发文量
38
审稿时长
>12 weeks
期刊介绍：
Grassland Science is the official English language journal of the Japanese Society of Grassland Science. It publishes original research papers, review articles and short reports in all aspects of grassland science, with an aim of presenting and sharing knowledge, ideas and philosophies on better management and use of grasslands, forage crops and turf plants for both agricultural and non-agricultural purposes across the world. Contributions from anyone, non-members as well as members, are welcome in any of the following fields:
grassland environment, landscape, ecology and systems analysis;
pasture and lawn establishment, management and cultivation;
grassland utilization, animal management, behavior, nutrition and production;
forage conservation, processing, storage, utilization and nutritive value;
physiology, morphology, pathology and entomology of plants;
breeding and genetics;
physicochemical property of soil, soil animals and microorganisms and plant
nutrition;
economics in grassland systems.
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