Zhou Ke-jin, Guan Chun-yun, Xiao Wen-na
Institute of Oilseed Crops, Hunan Agricultural University, Changsha, China.
Ying Yong Sheng Tai Xue Bao. 2009 Dec;20(12):3015-9.
A field experiment was conducted to study the effects of ripeners Diguat and Roundup on the chlorophyll content, activities of catalase (CAT), superoxide dismutase (SOD), and peroxidase (POD), cell membrane permeability, and malondialdehyde (MDA) content of rapeseed pods. Under effects of Diquat, the chlorophyll content decreased, while the activities of SOD, POD, and CAT, cell membrane permeability, and MDA content increased significantly, leading to the peroxidation of membrane lipid. These effects increased with increasing Diquat concentration. After treated with Roundup, the chlorophyll content had less change, activities of SOD, POD, and CAT increased slowly, and cell membrane permeability and MDA content had no obvious increase. With the increasing time of ripeners treatment, the activities of protective enzymes were inhibited to different degree, possibly due to the changes of molecular structure of antioxidant enzyme system under effects of the ripeners.
进行了一项田间试验，以研究敌草快和草甘膦对油菜角果皮叶绿素含量、过氧化氢酶（CAT）、超氧化物歧化酶（SOD）和过氧化物酶（POD）活性、细胞膜通透性以及丙二醛（MDA）含量的影响。在敌草快的作用下，叶绿素含量降低，而SOD、POD和CAT的活性、细胞膜通透性以及MDA含量显著增加，导致膜脂过氧化。这些影响随着敌草快浓度的增加而增强。用草甘膦处理后，叶绿素含量变化较小，SOD、POD和CAT的活性缓慢增加，细胞膜通透性和MDA含量没有明显增加。随着催熟剂处理时间的延长，保护酶的活性受到不同程度的抑制，这可能是由于催熟剂作用下抗氧化酶系统分子结构的变化所致。
