Involvement of Antioxidative Defense System in Rice Seedlings Exposed to Aluminum Toxicity and Phosphorus Deficiency
| Autor: | Jiang-jia Wang, Mei Wang, Zi-dong Zhang, Tian-rong Guo, Peng-cheng Yao |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
aluminum toxicity
biology rice Plant Science plant growth lcsh:Plant culture biology.organism_classification Malondialdehyde Superoxide dismutase Lipid peroxidation chemistry.chemical_compound Horticulture chemistry Seedling Chlorophyll Toxicity Botany biology.protein oxidative stress Phosphorus deficiency lcsh:SB1-1110 Proline Agronomy and Crop Science phosphorus deficiency Biotechnology |
| Zdroj: | Rice Science, Vol 19, Iss 3, Pp 207-212 (2012) |
| ISSN: | 1672-6308 |
| Popis: | Plants growing in acid soils may suffer both phosphorus (P) deficiency and aluminum (Al) toxicity. Hydroponic experiments were undertaken to assess the single and combination effects of Al toxicity and low P stress on seedling growth, chlorophyll and proline contents, antioxidative response and lipid peroxidation of two rice genotypes (Yongyou 8 and Xiushui 132) differing in Al tolerance. Al toxicity and P deficiency both inhibited rice seedling growth. The development of toxic symptoms was characterized by reduced chlorophyll content, increased proline and malondialdehyde contents in both roots and leaves, and increased peroxidase and superoxide dismutase activities in roots, but decreased in leaves. The stress condition induced more severe growth inhibition and oxidative stress in Yongyou 8, and Xiushui 132 showed higher tolerance to both Al toxicity and P deficiency. P deficiency aggravated Al toxicity to plant growth and induced more severe lipid peroxidation. |
| Databáze: | OpenAIRE |
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