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期 刊 ：植物保护学报 1999年

关键词：SAR基因；系统性获得抗性；植物；抗病性；

Keywords:systemic acquired resistance (SAR), SAR genes, signal potentiation, systemic signal molecule, signal transduction pathway,

摘 要 ：坏死型病原物侵染或某些生化制剂诱导处理后，植株未受侵染或处理部位产生对随后病原物侵染的抗性，称为植物系统性获得抗性，ＳＡＲ具有抗性表现系统、持久、抗病对象广谱三大特点。坏死型病原物侵染或某些生化制剂处理后，植株受处理部位迅速产生系统性信号，经韧皮部传导到未侵染或处理部位，诱发ＳＡＲ基因表达。水杨酸是诱发ＳＡＲ的系统性信号之一。此外，上部非处理部位处于敏化状态，能更迅速有效地产生针对挑战接种病原物的

Abstract:The mechanism and pathways of plant systemic acquired was reviewed. After plant is inoculated with a necrotizing pathogen or treated with some chemicals, the uninoculated or untreated parts of the plant will demonstrate resistance to the infection of a se

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