摘要
以石菖蒲(Acorus tatarinowii Schott)为供试材料,研究了淹水环境对植物抗氧化酶(SOD、POD、CAT)系统及丙二醛(MDA)含量的影响。结果表明,3种处理条件下植株SOD变化趋势相近,但半淹、全淹处理植株变化幅度大于对照组。在7 d时,半淹处理植株SOD低于对照组16.0%,全淹处理低于对照组42.7%;21 d时,半淹处理植株SOD与对照组相近,全淹处理则高于对照组25.1%。试验期间,半淹处理植株CAT、MDA均呈现出先上升、后下降的趋势,POD持续上升;而全淹处理植株CAT、SOD、MDA含量持续升高,在淹水21 d时显著高于对照组和半淹处理(P<0.05)。试验表明,在淹水条件下,石菖蒲可通过抗氧化系统调节抗逆能力,增强植株抗淹能力。在湿地中种植挺水植物,可以增强湿地系统的抗淹能力。
Acorus tatarinowii Schott was used to study the effect of flooding stress on plant antioxidant enzyme system（SOD,POD,CAT） and malondialdehyde （MDA）. The results showed that the plants SOD of the three treatments had similar trends, but the change ranges of half-submerged and submerged plants were higher than that in the control. On the 7th day,half-submerged plants SOD was 16.0% lower than that of control and submerged treatment was 42.7% lower than that in the control. On the 21st day, half-submerged plants SOD was closely near the control and submerged treatment was 25.1% higher than that in thecontrol. During the experiment period, CAT and MDA showed ascending first and then descending. POD kept elevating all the time. On the 21st day, All submerged plants CAT, SOD and MDA kept elevating and significantly higher than that in the control and half-submerged. It presented that under flooding condition, A. tatarinowii could regulate its stress resistance through antioxidant enzyme system, and enhance anti-submergence ability. So, emerged plants can be cultivated in wetland to enhance its anti-submergence ability.
出处
《水生态学杂志》
北大核心
2012年第4期138-141,共4页
Journal of Hydroecology
基金
重庆市自然科学基金项目(cstc2011jjA1236)
关键词
石菖蒲
淹水胁迫
抗氧化酶
Acorus tatarinowii Schott
flooding stress
antioxidant enzyme
