Exogenous salicylic acid(SA) can alter plants' ability to resist photooxidative stress through its effects on activities of antioxidant enzymes in plants.
外源水杨酸（SA）能改变植物叶片内抗氧化酶的活性而影响其抗氧化能力。
Combined intimidation resulted in AOS accumulation, and cyanide-resistant respiration and the activities of antioxidant enzymes presented upon the completion of lowing AOS production, to some extent.
病原菌侵染和水分复合胁迫下，活性氧产生的速率表现出累加效应，而抗氰呼吸表现出和基质抗氧化酶的活性互补。
The results showed that, compared with the younger rats, the antioxidant enzymes activities and the anti-atherogenic index of old rats were decreased, the lipid peroxidation level was increased.
结果表明，与正常组比较，老年大鼠的红细胞各项抗氧化酶活性降低，脂质过氧化水平提高，抗动脉硬化指数降低。
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