Foraging for light: Photosensory ecology and agricultural implications
Foraging for light: Photosensory ecology and agricultural implications
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DOI：
10.1046/j.1365-3040.1997.d01-112.x
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发表时间：
1997-06-01
影响因子：
7.3
通讯作者：
Sanchez, RA
中科院分区：
文献类型：
--
作者：
Ballare, CL;Scopel, AL;Sanchez, RA
这个小型审查关注的是，在过去的十年中，植物的感官生理学的一个方面，已被深入研究，使用转基因植物和生态生理技术-通过特定的信息光感受器的邻近植物的感知。我们专注于信号机制，使个别芽'饲料'光在斑块和高度动态的冠层环境，我们目前的证据，从最近的实验表明，每个单独的植物在人口中的健身，人口的增长作为一个整体，和邻居之间的增长不平等的程度都强烈依赖于控制的觅食机制的时间和精度，至少部分是由光敏色素B类光敏色素引起的。这一证据是在竞争的潜在影响农作物的产量所造成的人工改变植物的敏感性接近光信号，光敏色素基因的定向过表达似乎是一个有趣的途径，探索以改变特定器官（或发育阶段）的光形态建成，而不影响植物的整体能力觅食的光。
This mini-review is concerned with one of the facets of the sensory physiology of plants that, in the last decade, has been intensively studied using genetically altered plants and eco-physiological techniques - the perception of the proximity of neighbouring plants through specific informational photoreceptors. We focus on the signalling mechanisms that allow individual shoots to 'forage' for Light in patchy and highly dynamic canopy environments, We present evidence from recent experiments suggesting that the fitness of each individual plant in the population, the growth of the population as a whole, and the degree of growth inequality among neighbours are all strongly dependent on the timing and precision of foraging mechanisms controlled, at least partially, by phytochrome-B-like phytochromes. This evidence is discussed in the contest of potential impacts on yield of agricultural crops resulting from the artificial alteration of plant sensitivity to proximity photo-signals, Directed overexpression of phytochrome genes appears to be an interesting avenue to explore in order to alter the photomorphogenesis of specific organs (or developmental stages) without affecting the overall ability of the plants to forage for light.