Ozone risk assessment for plants: Central role of metabolism-dependent changes in reducing power

被引：97

作者：

Dizengremel, Pierre ^{[1
]}

Le Thiec, Didier ^{[2
]}

Bagard, Matthieu ^{[1
]}

Jolivet, Yves ^{[1
]}

机构：

[1] Nancy Univ, Fac Sci & Tech, UMR Ecol & Ecophysiol Forestieres 1137, F-54506 Vandoeuvre Les Nancy, France

[2] INRA, Ctr INRA Nancy, UMR Ecol & Ecophysiol Forestieres 1137, F-54280 Champenoux, France

来源：

ENVIRONMENTAL POLLUTION | 2008年 / 156卷 / 01期

关键词：

Antioxidants; NAD(P)H; Ozone; Rubisco/PEPc ratio; Water use efficiency;

D O I：

10.1016/j.envpol.2007.12.024

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The combination of stomatal-dependent ozone flux and total ascorbate level is currently presented as a correct indicator for determining the degree of sensitivity of plants to ozone. However, the large changes in carbon metabolism could play a central role in the strategy of the foliar cells in response to chronic ozone exposure, participating in the supply of reducing power and carbon skeletons for repair and detoxification, and modifying the stomatal mode of functioning. To reinforce the accuracy of the definition of the threshold for ozone risk assessment, it is proposed to also consider the redox pool (NAD(P)H), the ratio between carboxylases and the water use efficiency as indicators of the differential ozone tolerance of plants. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：11 / 15

页数：5

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