首页> 美国卫生研究院文献>International Journal of Molecular Sciences >Analysis of Non-Structural Carbohydrates and Xylem Anatomy of Leaf Petioles Offers New Insights in the Drought Response of Two Grapevine Cultivars
【2h】

Analysis of Non-Structural Carbohydrates and Xylem Anatomy of Leaf Petioles Offers New Insights in the Drought Response of Two Grapevine Cultivars

机译:叶柄的非结构性碳水化合物和木质部解剖分析为两种葡萄品种的干旱反应提供了新的见解

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

In grapevine, the anatomy of xylem conduits and the non-structural carbohydrates (NSCs) content of the associated living parenchyma are expected to influence water transport under water limitation. In fact, both NSC and xylem features play a role in plant recovery from drought stress. We evaluated these traits in petioles of Cabernet Sauvignon (CS) and Syrah (SY) cultivars during water stress (WS) and recovery. In CS, the stress response was associated to NSC consumption, supporting the hypothesis that starch mobilization is related to an increased supply of maltose and sucrose, putatively involved in drought stress responses at the xylem level. In contrast, in SY, the WS-induced increase in the latter soluble NSCs was maintained even 2 days after re-watering, suggesting a different pattern of utilization of NSC resources. Interestingly, the anatomical analysis revealed that conduits are constitutively wider in SY in well-watered (WW) plants, and that water stress led to the production of narrower conduits only in this cultivar.
机译:在葡萄中,木质部导管的解剖结构和相关活壁薄壁组织的非结构性碳水化合物(NSC)含量预计会在缺水的情况下影响水的运输。实际上,NSC和木质部特征都在干旱胁迫下的植物恢复中发挥作用。我们评估了水分胁迫(WS)和恢复期间赤霞珠(CS)和西拉(SY)品种的叶柄的这些性状。在CS中,胁迫反应与NSC消耗有关,支持了以下假设:淀粉动员与麦芽糖和蔗糖的供应增加有关,这可能参与了木质部水平的干旱胁迫反应。相反,在SY中,WS诱导的后者可溶性NSC的增加即使在再浇水后2天也得以维持,这表明NSC资源利用的模式不同。有趣的是,解剖学分析显示,在富水(WW)植物中,SY的导管在结构上较宽,并且水分胁迫仅在该品种中导致较窄的导管产生。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号