کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4426755 1309135 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Moving toward effective ozone flux assessment
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Moving toward effective ozone flux assessment
چکیده انگلیسی

We present a comment about “Ozone risk assessment for plants: central role of metabolism-dependent changes in reducing power” by Dizengremel, Le Thiec, Bagard, and Jolivet. As tools for summarizing plant O3 sensitivity in simple indices, Dizengremel et al. suggest: reducing power, as antioxidant regeneration through the Halliwell/Asada cycle requires NADPH from the photosynthetic light reaction; Rubisco/PEPc ratio, as an index of the energy balance between anabolic and catabolic reactions; and water-use efficiency as a time-integrated approximation of the carbon gain to stomatal O3 uptake ratio. The scientific background is solid, and simple enough (although expensive) to be translated into modelling and routine use. In the last decade, several approaches have been developed, mostly by using photosynthesis as a metric of defence. All these approaches should be experimentally tested in different and realistic conditions, before the results are transferred to the field and used in effective O3 flux modelling and assessment.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 156, Issue 1, November 2008, Pages 16–19
نویسندگان
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