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Elevated atmospheric CO2 and the future of crop plants
Plant Breeding ( IF 2 ) Pub Date : 2020-10-12 , DOI: 10.1111/pbr.12871
Sujata Bhargava 1 , Sirsha Mitra 1
Affiliation  

Atmospheric CO2 levels on Earth have risen steeply over the last 60 years and will continue to do so in future. CO2 traps heat from earth's surface, which causes an increase in temperature and leads to other climatic changes. Crop plants are currently challenged by climate change. In general, elevated CO2 increases photosynthetic rates, plant growth and the ability of plants to counteract stress. However, the effect of eCO2 on respiration is not apparent. Plants growing at eCO2 probably do not have sufficient respiratory ATP to drive cellular processes like nutrient uptake and transport, which impairs their nutritional quality. Here, we review how eCO2 modulates growth and nutritional value of crop plants, emphasizing the contribution of photosynthesis and respiration. We highlight the mechanisms that modulate acclimation and adaptive responses of plants to eCO2 and also discuss the ecological consequences. Finally, we project sorghum as a model for an eCO2 ready crop.

中文翻译:

大气中二氧化碳含量升高和农作物的未来

在过去的60年中,地球上的大气CO 2水平急剧上升,并且将来还将继续上升。CO 2从地球表面捕获热量,这导致温度升高并导致其他气候变化。目前,农作物面临气候变化的挑战。通常,升高的CO 2会提高光合作用,植物生长和植物抵抗胁迫的能力。但是,eCO 2对呼吸的作用尚不明显。在eCO 2下生长的植物可能没有足够的呼吸ATP来驱动诸如营养吸收和运输的细胞过程,从而损害了它们的营养质量。在这里,我们回顾一下eCO 2调节农作物的生长和营养价值,强调光合作用和呼吸作用。我们重点介绍了调节植物对eCO 2的适应和适应性反应的机制,并讨论了生态后果。最后,我们将高粱投影为可用于eCO 2的农作物的模型。
更新日期:2020-10-12
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