The 4-Dimensional Plant: Effects of Wind-Induced Canopy Movement on Light Fluctuations and Photosynthesis.
The 4-Dimensional Plant: Effects of Wind-Induced Canopy Movement on Light Fluctuations and Photosynthesis.
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DOI：
10.3389/fpls.2016.01392
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发表时间：
2016
影响因子：
5.6
通讯作者：
Murchie EH
中科院分区：
文献类型：
--
作者：
Burgess AJ;Retkute R;Preston SP;Jensen OE;Pound MP;Pridmore TP;Murchie EH
风对植物冠层的物理扰动是一种普遍存在的现象，但其生物学意义却常常被忽视。这在一定程度上是由于手头问题的复杂性：风引起的运动（或机械激励）是难以测量和量化的随机过程;植物运动依赖于冠层结构特征，直到最近，冠层结构特征难以在3维中准确地表示和建模;在高分辨率下难以计算整个树冠的光图案，特别是当被其他环境变量混淆时。最近的研究已经加强了这样的期望，即冠层结构是生产力和产量的一个强有力的决定因素;然而，植物的结构特性与其机械特性之间的联系，特别是其对风的反应，相对未知。因此，与冠层结构、光动力学和冠层环境中的短尺度光合反应相关的生物学数据很少。在这里，我们假设，风引起的运动将有很大的后果，我们的作物的光合生产力，由于其对光图案的影响。为了解决这个问题，在这项研究中，我们结合了高分辨率的三维重建的植物冠层与一个简单的表示冠层扰动的结果，风使用固体旋转，以探索潜在的影响，光图案，拦截和光合生产力。我们研究了两种不同的情况：第一种是持续变形，水稻冠层在一整天内都受到永久变形的影响;第二种是动态变形，在一天中的设定时间点，冠层在两个极端之间以递增的步骤变形。我们发现，机械冠层激发大大改变光动态，光分布和建模冠层碳增益。然后，我们讨论了精确建模的机械冠层激励（这里创造的4维植物）和一些相关的生物和应用这些技术的影响所需的方法。我们假设，植物的生物力学特性是一个特定的适应，以实现风诱导的光合作用增强，我们概述了如何性状促进冠层激发可用于提高作物产量的途径。
Physical perturbation of a plant canopy brought about by wind is a ubiquitous phenomenon and yet its biological importance has often been overlooked. This is partly due to the complexity of the issue at hand: wind-induced movement (or mechanical excitation) is a stochastic process which is difficult to measure and quantify; plant motion is dependent upon canopy architectural features which, until recently, were difficult to accurately represent and model in 3-dimensions; light patterning throughout a canopy is difficult to compute at high-resolutions, especially when confounded by other environmental variables. Recent studies have reinforced the expectation that canopy architecture is a strong determinant of productivity and yield; however, links between the architectural properties of the plant and its mechanical properties, particularly its response to wind, are relatively unknown. As a result, biologically relevant data relating canopy architecture, light- dynamics, and short-scale photosynthetic responses in the canopy setting are scarce. Here, we hypothesize that wind-induced movement will have large consequences for the photosynthetic productivity of our crops due to its influence on light patterning. To address this issue, in this study we combined high resolution 3D reconstructions of a plant canopy with a simple representation of canopy perturbation as a result of wind using solid body rotation in order to explore the potential effects on light patterning, interception, and photosynthetic productivity. We looked at two different scenarios: firstly a constant distortion where a rice canopy was subject to a permanent distortion throughout the whole day; and secondly, a dynamic distortion, where the canopy was distorted in incremental steps between two extremes at set time points in the day. We find that mechanical canopy excitation substantially alters light dynamics; light distribution and modeled canopy carbon gain. We then discuss methods required for accurate modeling of mechanical canopy excitation (here coined the 4-dimensional plant) and some associated biological and applied implications of such techniques. We hypothesize that biomechanical plant properties are a specific adaptation to achieve wind-induced photosynthetic enhancement and we outline how traits facilitating canopy excitation could be used as a route for improving crop yield.
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影响因子：
7.2
作者：
Hubbart, Stella;Ajigboye, Olubukola O.;Murchie, Erik H.
通讯作者：
Murchie, Erik H.
影响因子：
5.4
作者：
Kashiwagi, Takayuki;Togawa, Eiji;Ishimaru, Ken
通讯作者：
Ishimaru, Ken
影响因子：
9.4
作者：
Falster, DS;Westoby, M
通讯作者：
Westoby, M
DOI：
10.1098/rstb.1983.0075
发表时间：
1983-01-01
影响因子：
6.3
作者：
LEGG, BJ
通讯作者：
LEGG, BJ
影响因子：
3.8
作者：
Moser, Dietmar;Drapela, Thomas;Frank, Thomas
通讯作者：
Frank, Thomas