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CRISPR/Cas-based genome editing to improve abiotic stress tolerance in plants

Climate change is affecting agriculture in a number of ways, such as changing water distribution, daily temperatures and salinity patterns. In this regard, plant breeding innovations and genetic engineering approaches to improve abiotic stress tolerance are necessary to avoid a decline in crop yields caused by climate change during the 21st century. In the last few years, genome editing using the CRISPR/Cas system has attracted attention as a powerful tool that can generate hereditary mutations. So far, only a few studies using the CRISPR/Cas system have been reported to improve abiotic stress tolerance, but they have clearly suggested its effective role for future applications in molecular breeding to improve abiotic stress tolerance. Accordingly, the CRISPR/Cas system application is introduced in this mini-review as a way to improve abiotic stress tolerance. Although editing efficiency and target discovery for plant CRISPR/Cas systems require further improvement, CRISPR/Cas systems will be the key approach to maintaining global food security during climate change.