Defining the scope for altering rice leaf anatomy to improve photosynthesis: a modelling approach.
Defining the scope for altering rice leaf anatomy to improve photosynthesis: a modelling approach.
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DOI：
10.1111/nph.18564
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发表时间：
2023-01
期刊：
影响因子：
9.4
通讯作者：
Zhu, Xin-Guang
中科院分区：
文献类型：
--
作者：
Xiao, Yi;Sloan, Jen;Hepworth, Chris;Fradera-Soler, Marc;Mathers, Andrew;Thorley, Rachel;Baillie, Alice;Jones, Hannah;Chang, Tiangen;Chen, Xingyuan;Yaapar, Nazmin;Osborne, Colin P.;Sturrock, Craig;Mooney, Sacha. J. J.;Fleming, Andrew. J. J.;Zhu, Xin-Guang
叶片结构在光合作用中起着重要作用。然而，因果关系和定量的重要性，任何单一的结构参数的整体光合性能的叶子仍然是开放的辩论。在本文中，我们报告了一个机械模型，eLeaf，它成功地捕捉水稻叶片光合性能在不同的环境条件下的光和CO2。我们开发了一个叶片光合作用的3D反应扩散模型，该模型使用一系列成像数据和在环境和高浓度CO2下生长的植物的生化测量进行参数化，然后询问模型以量化这些元素的重要性。该模型成功地捕获了水稻叶片水平的光合性能。光合代谢的基础上观察到的二氧化碳水平升高下的碳同化率增加的大部分，与一系列的结构元素作出积极和消极的贡献。叶肉孔隙度可以改变没有任何重大的光合性能的结果，提供了一个理论基础的实验数据。 eLeaf允许定量分析形态和生化特性对叶片光合作用的影响。分析强调了一定程度的叶片结构可塑性，光合作用的意义，试图提高作物光合作用的背景下。
Leaf structure plays an important role in photosynthesis. However, the causal relationship and the quantitative importance of any single structural parameter to the overall photosynthetic performance of a leaf remains open to debate. In this paper, we report on a mechanistic model, eLeaf, which successfully captures rice leaf photosynthetic performance under varying environmental conditions of light and CO2. We developed a 3D reaction‐diffusion model for leaf photosynthesis parameterised using a range of imaging data and biochemical measurements from plants grown under ambient and elevated CO2 and then interrogated the model to quantify the importance of these elements. The model successfully captured leaf‐level photosynthetic performance in rice. Photosynthetic metabolism underpinned the majority of the increased carbon assimilation rate observed under elevated CO2 levels, with a range of structural elements making positive and negative contributions. Mesophyll porosity could be varied without any major outcome on photosynthetic performance, providing a theoretical underpinning for experimental data. eLeaf allows quantitative analysis of the influence of morphological and biochemical properties on leaf photosynthesis. The analysis highlights a degree of leaf structural plasticity with respect to photosynthesis of significance in the context of attempts to improve crop photosynthesis.
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