首页> 外文期刊>Environmental and experimental botany >Non-invasive tools to estimate stress-induced changes in photosynthetic performance in plants inhabiting Mediterranean areas. (Special Issue: Response to abiotic stresses of plants of Mediterranean-type ecosystems.)
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Non-invasive tools to estimate stress-induced changes in photosynthetic performance in plants inhabiting Mediterranean areas. (Special Issue: Response to abiotic stresses of plants of Mediterranean-type ecosystems.)

机译:非侵入性工具,用于评估在地中海地区居住的植物中,压力诱导的光合性能变化。 (特刊:对地中海型生态系统植物非生物胁迫的响应。)

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摘要

In Mediterranean areas, plants are concomitantly exposed to various abiotic stresses such as light intensity, water deficit, extremes in air temperature, air pollutants, etc. These environmental pressures adversely affect plant development. Changes in photosystem activity are an early response of plants to abiotic stresses. Therefore, chlorophyll (Chl) fluorescence and gas exchange, two non-invasive, rapid and inexpensive techniques for measuring photosynthesis in leaves, have been widely used by plant ecophysiologists to analyse plant responses to stressful conditions. Chl a fluorescence and gas exchange parameters can be indeed used to evaluate changes in photochemical and non-photochemical processes in photosystems associated with electron transport, CO2 fixation, and heat dissipation. In this review, we focus our analysis on the effects of different abiotic stresses on the photochemistry of Mediterranean plants using Chl a fluorescence and gas exchange measurements. Since changes in photosynthetic parameters are observed in the absence of visual injuries, these methodologies constitute fundamental tools to predict and evaluate the extent to which abiotic stresses damage photosynthesis.
机译:在地中海地区,植物会同时遭受各种非生物胁迫,例如光照强度,水分缺乏,极端气温,空气污染物等。这些环境压力会对植物的生长造成不利影响。光系统活性的变化是植物对非生物胁迫的早期反应。因此,叶绿素(Chl)荧光和气体交换是测量叶片光合作用的两种非侵入性,快速且廉价的技术,已被植物生态生理学家广泛用于分析植物对胁迫条件的反应。 Chl a的荧光和气体交换参数确实可以用于评估与电子传输,CO 2 固定和散热有关的光系统中光化学和非光化学过程的变化。在这篇综述中,我们将重点放在使用Chl a荧光和气体交换测量分析不同非生物胁迫对地中海植物光化学的影响上。由于在没有视觉伤害的情况下观察到了光合参数的变化,因此这些方法构成了预测和评估非生物胁迫对光合作用程度的基本工具。

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