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首页> 外文期刊>Annals of Botany >Dynamic changes in ABA content in water-stressed Populus nigra: effects on carbon fixation and soluble carbohydrates
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Dynamic changes in ABA content in water-stressed Populus nigra: effects on carbon fixation and soluble carbohydrates

机译:水应激杨树中ABA含量的动态变化:对碳固定和可溶性碳水化合物的影响

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摘要

Background and Aims Hydraulic and chemical signals operate in tandem to regulate systemic plant responses to drought. Transport of abscisic acid (ABA) through the xylem and phloem from the root to shoot has been suggested to serve as the main signal of water deficit. There is evidence that ABA and its ABA-glycosyl-ester (ABA-GE) are also formed in leaves and stems through the chloroplastic 2-C-methylerythritol-5-phosphate (MEP) pathway. This study aimed to evaluate how hormonal and hydraulic signals contribute to optimize stomatal (g(s)), mesophyll (g(m)) and leaf hydraulic (K-leaf) conductance under well-watered and water-stressed conditions in Populus nigra (black poplar) plants. In addition, we assessed possible relationships between ABA and soluble carbohydrates within the leaf and stem.
机译:背景和AIMS液压和化学信号在串联中运行,以调节系统植物对干旱的反应。 已经提出了通过Xylem和Phloem来拍摄的脱离酸(ABA)的运输,以作为水赤字的主要信号。 有证据表明ABA及其ABA-糖基 - 酯(ABA-GE)也形成在叶子中,茎通过氯塑2-C-甲基甲基酚-5-磷酸(MEP)途径。 本研究旨在评估激素和液压信号如何在杨树内嗜良好的和水胁迫条件下优化气孔(G(S)),叶片(G(M))和叶液(K叶)电导( 黑杨树)植物。 此外,我们评估了在叶子和茎内的ABA和可溶性碳水化合物之间的可能关系。

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