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光的光谱质量、光敏色素与植物竞争。

Light spectral quality, phytochrome and plant competition.

机构信息

Johanna Schmitt is at the Graduate Program in Ecology and Evolutionary Biology, Box G-W, Brown University, Providence, RI 02912, USA.

出版信息

Trends Ecol Evol. 1993 Feb;8(2):47-51. doi: 10.1016/0169-5347(93)90157-K.

Abstract

The light environment experienced by plants in natural vegetation is strongly dependent upon interactions with neighbors. For plants in dense stands, reduced irradiance can lead to reductions in growth and fitness. Spectral light quality is also altered beneath a leaf canopy, and can serve as an important signal of competition for light. Recent physiological studies indicate that plants can perceive the quality of light reflected from neighbors as an accurate predictor of future competition, and respond morphologically even before they are directly shaded. These findings have important implications for plant population biology, and provide a valuable opportunity for the study of adaptive plasticity.

摘要

植物在自然植被中所经历的光照环境强烈依赖于与周围环境的相互作用。对于生长在茂密林分中的植物来说,光照强度的降低会导致生长和适应能力的下降。在叶冠下,光谱光质量也会发生变化,并成为竞争光的重要信号。最近的生理学研究表明,植物可以感知从邻居那里反射回来的光的质量,将其作为未来竞争的准确预测,并在被直接遮荫之前就做出形态响应。这些发现对植物种群生物学具有重要意义,并为适应性可塑性的研究提供了宝贵的机会。

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