芦荟植物SOD酶对甲醛气体胁迫的应答

首次实验研究了中华芦荟(Aloe rera var.chinensis (Haw)Berg.)植物对甲醛的吸收以及植物体内超氧化物歧化酶(SOD)活性的变化情况,旨在了解芦荟净化室内甲醛气体的生理机制.实验以玻璃箱模拟室内空间环境,用乙酰丙酮分光光度法测定模拟空间内甲醛的浓度,用邻苯三酚自氧化法测定SOD的活性.结果表明,有芦荟存在的条件下,模拟空间内甲醛气体浓度显著下降.随着通人甲醛量的增加,芦荟对甲醛的吸收有着较显著的增加,并且SOD酶活性的变化也越来越显著.芦荟体内SOD酶对甲醛气体的胁迫存在着一定程度的生理应激反应,芦荟对室内甲醛污染存在一定程度的净化作用.

Response to SOD of Aloe vera var.chinensis(Haw)Berg.by formaldehyde

The present paper is aimed to report the authors' pioneering experiments with the absorption of formaldehyde by Aloe and the activity changes of the super-oxidedismutase(SOD) in its leaves so as to unveil the physiological reasons why the Aloe can absorb formaldehyde in the room environment. Our experiments have done in a glass testing chamber in hoping to simulate the interior room condition. The formaldehyde concentration in the simulated room can be measured by using a method of acetyl acetonation with spectrophotometer with the activity of SOD being tested by the self-oxidization method of pyrogallic acid. The results of our experiments indicate that in the presence of Aloe vera var. chinensis(Haw) Berg., the formaldehyde concentration in the simulated room would have given a remarkable drop; while the activity of SOD would turn to be more and more remarkable with the increase of formaldehyde absorption capacity of Aloe. From what is said above, it can be concluded that the SOD in Aloe vera var. chinensis (Haw) Berg. has a physiological stress response to the stress of formaldehyde, in which Aloe did play a certain role in depurating formaldehyde in the interior environment.