“…Compared with traditional microplate screening, the reagent cost was reduced by millions of times ( Lu et al, 2019 ). With atmospheric and room temperature plasma (ARTP) mutagenesis and droplet-based microfluidic high-throughput screening, it is possible to explore the potential of protein production by employing iterative rounds of genome-wide diversity generation ( Kenzom et al, 2015 ; Ma et al, 2019 ; Yuan et al, 2022 ). For example, compared to the beginning strain, the best mutant strain showed a twofold increase in cellulase activity in one research ( Yuan et al, 2022 ).…”