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EFFECTOF LANTHANUM ON MEMBRANE LIPID PREOXIDATION OFSOYBEAN SEEDLINGS UNDES SUPPLEMENTAL UV- BIRRADIATION(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2006年02期
Page:
145-148
Research Field:
Publishing date:

Info

Title:
EFFECTOF LANTHANUM ON MEMBRANE LIPID PREOXIDATION OFSOYBEAN SEEDLINGS UNDES SUPPLEMENTAL UV- BIRRADIATION
Author(s):
Yan Shengrong 2 　Zhang Lan 2Zhou Qing 1; 2
(1. The Key Laboratory of Industrial Biotechnology , Ministry of Education , SouthernYangtze University ,Wuxi 214036 ;2.Laboratoryt of Environmental Ecology ,SouthernYangtze University , Wuxi 214036)
Keywords:
Lanthanum ; Ultraviolet - B radiation ; Soybean seedlings; Membrane lipid peroxidation
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2006.02.0145
Abstract:
　 Effect of lanthanum (La 3 + )on membrane lipid peroxidation of soybean seedlings under elevatedultraviolet - B radiation (UV - B :280～ 330nm)at 15μW /cm 2 and 30μW /cm 2 level was studied with hydro-ponics under laboratory conditions. Firstly , such indexes of plasmolemma permeality , MDA content , CATand POD activities were utilized to choose the best spraying concentration of rare earth to soybean seed-lings. Our result showed that 20mg L - 1La significantly increased activities of CAT and POD , decreasedplasmolemma permeality and MDA content and that improved antioxidant metabolism of soybean seed-lings. The plasmolemma permeality and MDA content of soybean seedlings gradually increased during sup-plemental ultraviolet - B radiation and then decreased after ultraviolet - B stress. The dynamic trend ofplasmolemma permeality and MDA content in soybean seedlings exposed to ultraviolet - B radiation withthe pretreatment of lanthanum was similar to the above UV - B treatment. However , the range of varia-tion of UV - B and La treatment was lower than only UV - B treatment ;that of low dosage of UV - B andLa treatment was also lower than high dosage of UV - B and La treatment. It could be concluded that Lacould mitigate membrane lipid peroxidation caused by UV - B stress and that its protective effects againstlow UV - B radiation was better than that of high UV - B radiation.

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Last Update: 2016-12-14