Academic Journal
Na+ accumulation alleviates drought stress induced photosynthesis inhibition of PSII and PSI in leaves of Medicago sativa
| العنوان: | Na+ accumulation alleviates drought stress induced photosynthesis inhibition of PSII and PSI in leaves of Medicago sativa |
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| المؤلفون: | Zhang Huihui, Huo Yuze, Guo Kaiwen, Xu Zisong, Shiqi Liu, Qiao Wang, Xuecong Wang, Xu Nan, Yining Wu, Sun Guangyu |
| المصدر: | Journal of Plant Interactions, Vol 16, Iss 1, Pp 1-11 (2021) |
| بيانات النشر: | Taylor & Francis Group, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Plant culture LCC:Plant ecology |
| مصطلحات موضوعية: | medicago sativa, drought stress, nacl pretreatment, na+ accumulation, photoinhibition, non-photochemical quenching, Plant culture, SB1-1110, Plant ecology, QK900-989 |
| الوصف: | To probe the mechanism of action of NaCl in regulating drought adaptation in Medicago sativa, we pretreated M. sativa with different concentrations (0, 50, 100 and 200 mM) of NaCl, then studied the effects of NaCl pretreatment on water content, chlorophyll content, photosynthetic function, and membrane peroxidation of M. sativa plants subjected to drought stress. Although pretreatment with different concentrations of NaCl significantly increased the Na+ content in the aboveground of M. sativa, it had no significant effect on the activity of PSII and PSI. However, different concentrations of NaCl pretreatment significantly increased the water content of the aboveground of M. sativa under drought stress, alleviated the degree of photoinhibition of PSII and PSI, and maintained the flow and stability of donor and acceptor electrons in PSII. NaCl pretreatment promotes the increase of non-photochemical quenching (NPQ), which relieves oxidative damage in the leaves of M. sativa under drought stress, playing an important role in maintaining the activity of PSII and PSI. In conclusion, pretreatment with a certain concentration of NaCl can help M. sativa leaves maintain relatively high-water content and alleviate the photosynthesis inhibition of PSII and PSI under drought stress, thereby improving the drought resistance of M. sativa. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1742-9145 1742-9153 17429145 |
| Relation: | https://doaj.org/toc/1742-9145; https://doaj.org/toc/1742-9153 |
| DOI: | 10.1080/17429145.2020.1866091 |
| URL الوصول: | https://doaj.org/article/380004a02f8d4c9b8089a8b7e32a08c5 |
| رقم الانضمام: | edsdoj.380004a02f8d4c9b8089a8b7e32a08c5 |
| قاعدة البيانات: | Directory of Open Access Journals |
| تدمد: | 17429145 17429153 |
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| DOI: | 10.1080/17429145.2020.1866091 |