南京林业大学学报（自然科学版）2013，Vol.37Issue(1)：137-141,5.
盐胁迫对两种忍冬属植物活性氧平衡的影响
Reactive oxygen species homeostasis of two Lonicera species under salt stress
摘要
Abstract
Lonicera japonica var. chinensis and L. fragrantissima potted plants were used to study their physiological response and salt tolerance under NaCl stress. The results showed that the electrical conductivity and MDA content increased with the increasing of salt concentration in both species. There was no obvious rise of H2O2 content in L japonica var. chinensis, while a higher level of H2O2 content in L. fragrantissima was observed than control. There was a significant generating rate of superoxide radical (O2 ) at early stage of salt stress in L japonica var. chinensis, but the time was later than superoxide radical in L.fragrantissima. For L. japonica var. chinensis,the activities of SOD, APX, and CAT increased and then decreased, while the POD activity showed a constant increase during stress process. For L fragrantissima, the SOD activity increased slightly during NaCl stress, however, the activities of APX and CAT increased first and then decreased. No obvious POD activity increment was detected, only a significant increment was observed under at the end of 100 mmol/L NaCl stress. These results suggested that the two Lonicera species could employ-antioxidant enzymes to eliminate ROS under salt stress. Meanwhile, the salt tolerance of L japonica var. chinensis was better than that of L fragrantissima by rapidly increasing the activities of antioxidant enzymes to decrease the lipid perox-idation level and reduce ROS damage.关键词
红白忍冬/郁香忍冬/盐胁迫/活性氧/抗氧化酶Key words
Lonicera japonica var. chinensis/ Lonicera fragrantissima/ salt stress/ ROS/ antioxidant enzymes分类
农业科技引用本文复制引用
程淑娟,唐东芹,刘群录..盐胁迫对两种忍冬属植物活性氧平衡的影响[J].南京林业大学学报（自然科学版）,2013,37(1):137-141,5.基金项目
"十一五"国家科技支撑计划(2008BAJ10B04) （2008BAJ10B04）
上海市科委项目(09dz1205003) （09dz1205003）
