Effect of sulphate nutrition on arsenic translocation and photosynthesis of rice seedlings
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- 作者：Rui Song (1) (2)
Chen-Yun Zhao (1) (2)
Juan Liu (1) (2)
Jing Zhang (1) (2)
Yan-Xiu Du (1) (2)
Jun-Zhou Li (1) (2)
Hong-Zheng Sun (1) (2)
Hong-Bing Zhao (3)
Quan-Zhi Zhao (1) (2) - 关键词：Sulphate ; Arsenic ; Arsenic translocation ; Dual ; PAM ; Chlorophyll fluorescence ; Rice (Oryza sativa)
- 刊名：Acta Physiologiae Plantarum
- 出版年：2013
- 出版时间：November 2013
- 年：2013
- 卷：35
- 期：11
- 页码：3237-3243
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- 作者单位：Rui Song (1) (2)
Chen-Yun Zhao (1) (2)
Juan Liu (1) (2)
Jing Zhang (1) (2)
Yan-Xiu Du (1) (2)
Jun-Zhou Li (1) (2)
Hong-Zheng Sun (1) (2)
Hong-Bing Zhao (3)
Quan-Zhi Zhao (1) (2)
1. Key Laboratory of Physiology, Ecology and Genetic Improvement of Food Crops in Henan Province, Henan Agricultural University, 95 Wenhua Road, Zhengzhou, 450002, China
2. Key Laboratory of Crop Physiological Ecology and Farming System, Huanghuaihai, Ministry of Agriculture, Zhengzhou, 450002, Henan, China
3. Zealquest Laboratory, Zealquest Scientific Technology Co. Ltd, Shanghai, 200333, China - ISSN：1861-1664
文摘
The effect of sulphate nutrition on arsenic (As) concentration, photosynthetic and chlorophyll fluorescence parameters of rice was investigated in hydroponically grown rice seedlings (Oryza sativa L.), using three sulphate levels (1.8, 0.7mM, or 1.5mM). The results showed that sulphate deficiency decreased As accumulation in root, but increased the translocation of As from root to shoot. Sulphate deficiency reduced maximum quantum yield (Fv/Fm), minimum fluorescence and electron transport rate (ETR) of a dark-adapted leaf. Compared with low sulphate treatments (1.8), significant increases were observed in the parameters of rapid light curves, rETRmax and I k of photosystem I (PSI) and photosystem II (PSII) of rice grown in the high sulphate treatments (1.5mM) regardless of As additions. Therefore, an adequately high sulphate supply may result in less As translocation from root to shoot, and protecting the reaction pathways of PSI and PSII of rice seedlings grown in higher As-contaminated medium.