The effect of increasing temperature on crop photosynthesis: from enzymes to ecosystems.
The effect of increasing temperature on crop photosynthesis: from enzymes to ecosystems.
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DOI：
10.1093/jxb/erab090
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发表时间：
2021-04-02
影响因子：
6.9
通讯作者：
Cavanagh AP
中科院分区：
文献类型：
--
作者：
Moore CE;Meacham-Hensold K;Lemonnier P;Slattery RA;Benjamin C;Bernacchi CJ;Lawson T;Cavanagh AP
这篇综述探讨了当前对作物光合作用和温度跨尺度的理解，将叶片内的酶过程与气孔、植物运输系统、个体植物和生态系统尺度的响应联系起来。随着全球陆地表面温度持续上升，热浪事件的频率、持续时间和/或强度增加，我们的主要粮食和燃料种植系统可能会面临更多与热有关的压力。大量的文献存在于探索测量和模拟温度上升对作物光合作用的影响，从叶片内的酶反应到更大的生态系统规模的反应，反映季节性和年际作物对热量的反应。本文讨论了（i）作物光合作用如何在叶片内的酶尺度上随温度变化;（ii）气孔和植物运输系统如何受温度影响;（iii）是什么特征使植物对高温和热胁迫敏感或耐受;以及（iv）这些温度和热效应如何在生态系统尺度上复合影响作物产量。在整个审查过程中，我们确定了当前的进展和未来的研究轨迹，需要使我们的种植系统对温度上升和热应力更具弹性，这两种情况都是由于目前的全球化石燃料排放而预计会发生的。
This review explores current understanding in crop photosynthesis and temperature across scales, linking enzyme processes within the leaf to stomata, plant transport systems, individual plants, and ecosystem-scale responses. As global land surface temperature continues to rise and heatwave events increase in frequency, duration, and/or intensity, our key food and fuel cropping systems will likely face increased heat-related stress. A large volume of literature exists on exploring measured and modelled impacts of rising temperature on crop photosynthesis, from enzymatic responses within the leaf up to larger ecosystem-scale responses that reflect seasonal and interannual crop responses to heat. This review discusses (i) how crop photosynthesis changes with temperature at the enzymatic scale within the leaf; (ii) how stomata and plant transport systems are affected by temperature; (iii) what features make a plant susceptible or tolerant to elevated temperature and heat stress; and (iv) how these temperature and heat effects compound at the ecosystem scale to affect crop yields. Throughout the review, we identify current advancements and future research trajectories that are needed to make our cropping systems more resilient to rising temperature and heat stress, which are both projected to occur due to current global fossil fuel emissions.
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