Effects of fumigating rice plants with sulphur dioxide on photosynthetic pigments and nonstructural carbohydrates |
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| Affiliation: | 1. Key Laboratory of Green Control of Crop Pests in Hunan Higher Education, Hunan Provincial Collaborative Innovation Center for Field Weed Control, Hunan University of Humanities, Science and Technology, Loudi, China;2. Guangxi Key Laboratory of Biology for Crop Diseases and Insect Pests, Plant Protection Research Institute, Guangxi Academy of Agricultural Science, Nanning, China;3. Hunan Provincial Key Laboratory for Biology and Control of Weed, Hunan Academy of Agricultural Science, Changsha, China |
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| Abstract: | Exposure of Oryza sativa plants to 670 and 1330 μg m−3 SO2 during tillering and flowering decreased the concentrations of photosynthetic pigments and starch, and increased peroxidase activity and amounts of reducing sugar. Chlorophyll b was more sensitive to SO2 damage than chlorophyll a. It is suggested that peroxidase-mediated oxidation of chlorophyll is possible in SO2-exposed plants and that this change may ultimately affect plant development. |
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