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2004年12月28日

【期刊论文】Effect of Cd, Pb Stress on the Activated Oxygen Scavenging System in Tobacco Leaves*

严重玲, YAN CHONGLING), HONG YETANG), FU SHUNZHEN), FANG CHONGHUA), LEI JIXIANG), AND SHEN QIN)

CHINESE JOURNAL OF GEOCHEMEISTRY 1998, 17 (4): 372~378,-0001,():

-1年11月30日

摘要

The effect of Cd, Pb stress on the activated oxygen scavenging system indicates that the content of chlorophyll, chlorophyll a/b ratio and the activity of CAT gradually decrease, the activity of SOD increases first and then decreases, and the activity of POD gradually increases with increasing concentrations of Cd and Pb. Between Cd and Pb there is synergism in the activated oxygen scavenging system. The results show that the stress of Cd and Pb can affect the scavenging system of activated oxygen and result in imbalance of activated oxygen metabolism.

Cd,, Pb stress, scavenging system of activated oxygen, tobacco

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2004年12月28日

【期刊论文】水体沉积物中酸可挥发性硫化物(AVS)研究进展

严重玲, 刘景春, , 严重玲*, 胡俊

生态学报,2004,24,(4):812~818,-0001,():

-1年11月30日

摘要

水体沉积物中酸可挥发性硫化物(AVS)是总硫含量中活性最高的部分,是沉积物中有毒重金属的重要结合形态,它的含量在很大程度上影响着沉积物重金属的生物有效性,从而作为沉积物中有毒重金属环境污染评价的一个重要指标;就十多年来水体沉积物中酸可挥发性硫化物(AVS)的研究进行了综述。概述了AVS的测定方法及其影响因素;探讨了水体沉积物中AVS含量时空变化的规律,同时就目前“同时可提取重金属”(SEM)与AVS摩尔浓度比值和水体沉积物重金属生物毒性关系的研究进行了概括和分析。

酸可挥发性硫化物(, AVS), , 水体沉积物, 同时可提取重金属(, SEM),

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2004年12月28日

【期刊论文】酸雨胁迫下, 稀土元素对菠菜膜保护系统作用

严重玲, , 洪业汤, 林鹏, 王世杰, 杨先科, 付舜珍, 朱克勇, 吴善绮

生态学报,1999,19,(4):543~545,-0001,():

-1年11月30日

摘要

利用盆栽实验,探讨了酸雨胁迫下对菠菜膜保护酶系统的防护效应。实验结果表明:单一酸雨处理会造成超氧化物歧化酶(SOD)、过氧化酶(CAT)活性总体水平下降,其变化曲线呈“∧”形,并使过氧化物酶(POD)活性明显增加。施用稀土元素后酸雨胁迫下的植株叶片中SOD、CAT活性总体水平上升,变化曲线的峰值向酸度较大的方向移动,POD活性上升幅度减小,3种膜保护酶的活性与单一酸雨处理组相比,处在一种相对稳定的状态下,表现出在酸度不大的情况下,稀土元素对酸雨影响菠菜膜保护系统有明显的防护作用。

酸雨胁迫, 稀土元素, 菠菜, 膜保护系统

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2004年12月28日

【期刊论文】Effects of rare-earth elements on physiological and biochemical responses of wheat under acid rain stress*

严重玲, YAN Chongling, , HONG Yetang, LIN Peng, YANG Xianke, FU Shunzhen, WU Shanqi and ZHU Keyong

PROGRESS IN NATURAL SCIENCE, 1999, 9 (12): 929~933,-0001,():

-1年11月30日

摘要

The effects of rare-earth elements on physiological and biochemical responses of wheat under acid rain stress were studied by pot experiments. The results showed that the stress of acid rain resulted in the decrease of chlorophyll content and the change of chlorophyll a/b values. Chlorophyll a and chlorophyll content were positively correlated with the pH value of acid rain and the peroxidase activity increased gradually with decreasing pH value. The effects led to the increased decomposition of chlorophyll and decreased content and a/b values of chlorophyll, which reulted in a speed-up blade decay and the defect of absorption and transformation of light energy and metabolism of carbohydrates. Under lower acidic conditions, the rare-earth elements can protect wheat from being damaged by acid rain and affect chlotophyll metabolism and peroxidase activity of wheat.

acid stress,, rare-earth elements (, REE), ,, wheat,, physiological and biochemical response.,

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2004年12月28日

【期刊论文】Effect of Ce3+ on Free Cytoplasmic Calcium of Cells

严重玲, Shen Zhiguo, Zhuang Zhixiong, Huang Haixiong, Lei Hengyi, Yang Yansheng

JOURNAL OF RARE EARTHS 2002 Vol.20 No.2,-0001,():

-1年11月30日

摘要

The effect of Ce3+ on free cytoplasmic calcium of hepatocytes and V79 cells was studied with microfluorometry. The results show that the free cytoplasmic calcium increases in low dose and increases significantly in high dose of Ce3+. These results suggest that Ce3+ might enhance the influx of Ca2+ and be toxic to hepatocytes in high dose.

rare earths, cerium, free cytoplasmic calcium, hepatocytes, microfluorometry

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    厦门大学,福建

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