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Synthetic crassulacean acid metabolism (SynCAM) for improving water-use efficiency in plants
Sung Don Lim1, Johnathan S Lomas2, Monirul Islam2
1Applied Plant Sciences, Sang Ji University, Wonju-si, Gangwon-do, Republic of Korea.
Abstract:
The global climate crisis will continue to increase the frequency and duration of drought episodes in agricultural production areas worldwide. Hot and dry conditions create greater water-deficit stresses on crops, lowering their productivity. While multiple engineering strategies have been developed to improve the efficiency of photosynthesis, greater efforts are needed to improve the drought attenuation and water-use efficiency of crops. Crassulacean acid metabolism (CAM) is a naturally occurring elaboration of C3 photosynthesis that allows plants to occupy and thrive in hot and dry environments with limited or intermittent water supply. Creating synthetic versions of bioengineered CAM is one potentially fruitful approach to improving crop productivity while also reducing photorespiration and increasing water-use efficiency. We outline current efforts being undertaken to engineer CAM-like or synthetic versions of CAM (SynCAM) and future advances and strategies that might contribute to the optimization of SynCAM engineering in crops.This article is part of the theme issue 'Crops under stress: can we mitigate the impacts of climate change on agriculture and launch the 'Resilience Revolution'?'.
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