Effects of La3+ on the active oxygen-scavenging enzyme activities in cucumber seedling leaves

NWIPB OpenIR

	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 ; Shi P, Chen GC, Huang ZW.Effects of La3+ on the active oxygen-scavenging enzyme activities in cucumber seedling leaves.RUSSIAN JOURNAL OF PLANT PHYSIOLOGY,2005,52(3):294-297
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.
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/55924
专题	中国科学院西北高原生物研究所
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, Shi P, Chen GC, Huang ZW.Effects of La3+ on the active oxygen-scavenging enzyme activities in cucumber seedling leaves.RUSSIAN JOURNAL OF PLANT PHYSIOLOGY,2005,52(3):294-297,2005.
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.
MLA	Shi, P,et al."Effects of La3+ on the active oxygen-scavenging enzyme activities in cucumber seedling leaves".RUSSIAN JOURNAL OF PLANT PHYSIOLOGY (2005).