Differential Responses of Anti-Oxidative Enzymes to Aluminum Stress in Tolerant and Sensitive Soybean Genotypes

Autor:	Shao-Hua Liu, Yong-Hua Yang, Yan-Jun Pang, Lv Miao, Yan Zhen, Si-Si Wang, Jin-Liang Qi, Dacheng Tian, Heng-Guan Shen, Yale Yin, Jing Su
Rok vydání:	2009
Předmět:	biology Physiology Callose food and beverages medicine.disease_cause APX Enzyme assay Superoxide dismutase Lipid peroxidation chemistry.chemical_compound chemistry Biochemistry Catalase biology.protein medicine Food science Agronomy and Crop Science Oxidative stress Peroxidase
Zdroj:	Journal of Plant Nutrition. 32:1255-1270
ISSN:	1532-4087 0190-4167
DOI:	10.1080/01904160903005988
Popis:	Seedlings of two soybean genotypes, BX10 [aluminum (Al)-tolerant] and BD2 (Al-sensitive), were treated with Al to evaluate the relative root growth (RRG), callose content, Al-sensitive zone, lipid peroxidation, and the anti-oxidative enzyme activities by histochemical and biochemical assays. Under Al toxicity, the RRG reduction of BD2 was more significant than that of BX10, while callose content displayed a contrary trend. The 2–5 mm zone of root apex was the main Al-sensitive zone for soybeans. The activities of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX) were found to be higher in the two genotypes under Al toxicity than that of the controls. The SOD, POD, and CAT activities of BX10; however, were significantly lower than those of BD2. These results implied that producing low quantity of ROS may be one aspect of the Al-tolerant mechanism for soybeans, which in turn helps them adapt to Al stress.
Databáze:	OpenAIRE
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