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Shade tolerance: when growing tall is not an option

机译:阴影适应性:高个子时不可行

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摘要

Two different plant strategies exist to deal with shade: shade avoidance and shade tolerance. All shade-exposed plants optimize photosynthesis to adapt to the decrease in light quality and quantity. When shaded, most species in open habitats express the shade-avoidance syndrome, a growth response to escape shade. Shade-tolerant species from forest understories cannot outgrow surrounding trees and adopt a tolerance response. Unlike shade avoidance, virtually nothing is known about regulation of shade tolerance. In this opinion article, we discuss potential modes of molecular regulation to adopt a shade-tolerance rather than a shade-avoidance strategy. We argue that molecular approaches using model and non-model species should help identify the molecular pathways that underpin shade tolerance, thus providing knowledge for further crop improvement.
机译:存在两种不同的植物策略来处理阴影:避光和阴影耐受。所有暴露在阴凉处的植物都优化了光合作用,以适应光线质量和数量的下降。遮荫时,开放栖息地中的大多数物种都会表现出避荫综合症,这是对逃逸遮荫的一种生长反应。来自森林底层的耐荫树种无法生长在周围的树木上,无法采取耐受性措施。与避开阴影不同,几乎没有关于阴影容差调节的任何信息。在这篇观点文章中,我们讨论了采用阴影耐受性而不是避免阴影策略的分子调控潜在模式。我们认为,使用模型物种和非模型物种的分子方法应有助于确定支撑耐荫性的分子途径,从而为进一步改善作物提供知识。

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