【摘 要】
：
An analysis using SDS-PAGE of acidic and basic protein fractions extracted from rice seedling treated with salicylic acid (SA) yielded several new proteins, som
【机 构】
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Department of Biological Sciences and Biotechnology
【基金项目】
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教育部跨世纪优秀人才培养计划;国家自然科学基金;教育部霍英东教育基金
论文部分内容阅读
An analysis using SDS-PAGE of acidic and basic protein fractions extracted from rice seedling treated with salicylic acid (SA) yielded several new proteins, some of which are similar in relative molecular mass to PR-1a,c, PR-2, 2e and PR-3d, 3e of tobacco.Direct assays for peroxidases and β-1,3-glucanases demonstrated that the activities of the two enzymes in the rice seedlings increased rapidly with time after SA treatment, reaching a maximum 6 days after treatment.Disease resistance tests showed that SA treated rice seedlings stunted the development of blight lesions and displayed higher resistance to rice blight pathogen (Xanthomonas oryzea pv.oryzea).The data suggest that the treatment with SA, even for plants with high endogenous SA levels such as rice, may induce the appearance of new proteins and the formation of disease resistance.The results contribute to the analysis of the SA role in rice systemic acquired resistance.
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