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Company: Sartorius
Catalog#: ED4202S
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Experiments for in silico evaluation of Optimality of Photosynthetic Nitrogen Distribution and Partitioning in the Canopy: an Example Using Greenhouse Cucumber Plants
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2020-03-20
[Abstract]  Acclimation of leaf traits to fluctuating environments is a key mechanism to maximize fitness. One of the most important strategies in acclimation to changing light is to maintain efficient utilization of nitrogen in the photosynthetic apparatus by continuous modifications of between-leaf distribution along the canopy depth and within-leaf partitioning between photosynthetic functions according to local light availability. Between-leaf nitrogen distribution has been intensively studied over the last three decades, where proportional coordination between nitrogen concentration and light gradient was considered optimal in terms of maximizing canopy photosynthesis, without taking other canopy structural and physiological factors into account. We proposed a mechanistic model of protein ... [摘要]  [摘要 ] 使叶片性状适应不断变化的环境是最大化适应性的关键机制。适应光变化的最重要策略之一是通过不断修改沿冠层深度的叶间分布以及根据局部光的可用性在光合功能之间进行叶内分配来保持光合装置中氮的有效利用。叶片间氮分配 在过去的三十年中,人们对该技术进行了深入研究,其中在最大程度地提高冠层光合作用的同时,不考虑其他冠层的结构和生理因素,认为氮浓度和光梯度之间的比例协调是最佳的。我们提出了不同光合功能下蛋白质更新动态的力学模型,该模型可以使用在不同水平的恒定光照下生长的叶片进行参数化。通过将此动态模型集成到使用从温室实验收集的数据构建的多层冠层模型中,它使我们能够在计算机上测试光合作用氮的最佳程度,以在给定的光照环境下最大程度地利用冠层碳同化。

[背景 ] 帧内篷Ñ itrogen分布响应于光已被广泛研究(广濑和Werger ,1987; Werger 和广濑,1991; Anten 等人,1995; Dreccer 等人,2000;莫罗等人,2012; Hikosaka ,2016)和许多研究表明,尽管实际的氮分布导致冠层的光合作用高于均匀的氮分布,但仍然不是最优的(Field,1983; Evans,1993; Hollinger,1996; Hirose et al 。,1997; Meir 等人,2002; Wright 等人,2006;Hikosaka ...

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