Effects of Drought Stress on the Photosynthesis in Maize
- Авторы: Liu J.1, Guo Y.Y.1, Bai Y.W.1, Camberato J.J.2, Xue J.Q.1, Zhang R.H.1
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Учреждения:
- Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, Ministry of Agriculture, College of Agronomy
- Department of Agronomy
- Выпуск: Том 65, № 6 (2018)
- Страницы: 849-856
- Раздел: Research Papers
- URL: https://journal-vniispk.ru/1021-4437/article/view/180271
- DOI: https://doi.org/10.1134/S1021443718060092
- ID: 180271
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Аннотация
To clarify how the components of the entire photosynthetic electron transport chain in response to drought stress in maize. The activities of photosystem II (PSII), photosystem I (PSI), and the electron transport chain between PSII and PSI of maize were investigated by prompt fluorescence (PF), delayed fluorescence (DF) and 820 nm modulated reflection (MR). Maize (Zea mays L.) plants were subjected to different levels of soil water availability including control, moderate and severe drought stress. A significant decrease in ϕE0, Ψ0 and PIABS was found in maize treated with moderate drought stress. A significant increase in ABS/RC was observed, but there were no significant change in the fast MR phase and the amplitude of DF under moderate drought stress compared to the control. Under severe drought stress, the exchange capacity between QA to QB, reoxidation capacity of plastoquinol, and the oxidation and re-reduction rates of PC and P700 all decreased. These results demonstrated that moderate drought stress reduced the photochemical activity of PSII from QA to PQH2, while the photochemical activity of PSI was unscathed. However, severe drought stress inhibited the entire electron transport chain from the donor side of PSII to PSI-end electron acceptors. In addition, the photochemical activity of PSII is more sensitive to drought stress than PSI.
Об авторах
J. Liu
Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, Ministry of Agriculture, College of Agronomy
Email: zhangrenhe@nwsuaf.edu.cn
Китай, Yangling Shaanxi, 712100
Y. Guo
Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, Ministry of Agriculture, College of Agronomy
Email: zhangrenhe@nwsuaf.edu.cn
Китай, Yangling Shaanxi, 712100
Y. Bai
Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, Ministry of Agriculture, College of Agronomy
Email: zhangrenhe@nwsuaf.edu.cn
Китай, Yangling Shaanxi, 712100
J. Camberato
Department of Agronomy
Email: zhangrenhe@nwsuaf.edu.cn
США, West Lafayette, IN, 47907
J. Xue
Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, Ministry of Agriculture, College of Agronomy
Email: zhangrenhe@nwsuaf.edu.cn
Китай, Yangling Shaanxi, 712100
R. Zhang
Key Laboratory of Biology and Genetic Improvement of Maize in Arid Area of Northwest Region, Ministry of Agriculture, College of Agronomy
Автор, ответственный за переписку.
Email: zhangrenhe@nwsuaf.edu.cn
Китай, Yangling Shaanxi, 712100
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