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Effects of La3+ on the active oxygen-scavenging enzyme activities in cucumber seedling leaves
Shi, P; Chen, GC; Huang, ZW
2005-05-01
发表期刊RUSSIAN JOURNAL OF PLANT PHYSIOLOGY
卷号52期号:3页码:294-297
文章类型Article
摘要The effects of La3+ on the antioxidant enzyme activities and the relative indices of cellular damage in cucumber seedling leaves were studied. When cucumber seedlings were treated with low concentrations of LaCl3 (0.002 and 0.02 mM), peroxidase (PO) activity increased, and catalase (CAT) activity was similar to that of control leaves at 0.002 mM La3+ and increased at 0.02 mM La3+, whereas superoxide dismutase (SOD) activity did not change significantly. The increase in the contents of chlorophyll (including chlorophylls a and b), carotenoids in parallel with the decrease in the level of malondialdehyde (MDA) suggested that low concentration of La3+ promoted plant growth. However, except the increase in SOD activity at 2 mM La3+, CAT and PO activities and the contents of pigments decreased at high concentrations of La3+ (0.2 and 2 mM), leading to the increase of MDA content and the inhibition of plant growth. It is suggested that lanthanum ion is involved in the regulation of active oxygen-scavenging enzyme activities during plant growth.; The effects of La3+ on the antioxidant enzyme activities and the relative indices of cellular damage in cucumber seedling leaves were studied. When cucumber seedlings were treated with low concentrations of LaCl3 (0.002 and 0.02 mM), peroxidase (PO) activity increased, and catalase (CAT) activity was similar to that of control leaves at 0.002 mM La3+ and increased at 0.02 mM La3+, whereas superoxide dismutase (SOD) activity did not change significantly. The increase in the contents of chlorophyll (including chlorophylls a and b), carotenoids in parallel with the decrease in the level of malondialdehyde (MDA) suggested that low concentration of La3+ promoted plant growth. However, except the increase in SOD activity at 2 mM La3+, CAT and PO activities and the contents of pigments decreased at high concentrations of La3+ (0.2 and 2 mM), leading to the increase of MDA content and the inhibition of plant growth. It is suggested that lanthanum ion is involved in the regulation of active oxygen-scavenging enzyme activities during plant growth.
关键词Cucumis Sativus Lanthanum Ion Antioxidant Enzymes Cellular Damage
WOS标题词Science & Technology ; Life Sciences & Biomedicine
学科领域植物学
关键词[WOS]SUPEROXIDE-DISMUTASE ; LIPID-PEROXIDATION ; OXIDATIVE STRESS ; LANTHANUM ; CELLS ; ANTIOXIDANT ; MECHANISM ; DEFENSE ; GROWTH ; PLANTS
收录类别SCI
语种英语
WOS研究方向Plant Sciences
WOS类目Plant Sciences
WOS记录号WOS:000229401800004
引用统计
被引频次:17[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/1369
专题中国科学院西北高原生物研究所
作者单位1.Chinese Acad Sci, NW Inst Plateau Biol, Xining 810001, Peoples R China
2.E China Univ Sci & Technol, Coll Biotechnol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China
3.Chinese Acad Sci, Shanghai Inst Biol Sci, Inst Plant Physiol & Ecol, Shanghai 200032, Peoples R China
推荐引用方式
GB/T 7714
Shi, P,Chen, GC,Huang, ZW. Effects of La3+ on the active oxygen-scavenging enzyme activities in cucumber seedling leaves[J]. RUSSIAN JOURNAL OF PLANT PHYSIOLOGY,2005,52(3):294-297.
APA Shi, P,Chen, GC,&Huang, ZW.(2005).Effects of La3+ on the active oxygen-scavenging enzyme activities in cucumber seedling leaves.RUSSIAN JOURNAL OF PLANT PHYSIOLOGY,52(3),294-297.
MLA Shi, P,et al."Effects of La3+ on the active oxygen-scavenging enzyme activities in cucumber seedling leaves".RUSSIAN JOURNAL OF PLANT PHYSIOLOGY 52.3(2005):294-297.
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