Fig. 4

Overview of thermotolerant mechanisms of AAB. The thermotolerance mechanism of AAB is related to heat shock proteins, trehalose and polysaccharide layer on the cell surface. Additionally, during a prolonged evolutionary process, the genome of AAB has undergone numerous changes to withstand high-temperature stress, including gene mutations (such as MarR, APT1698, etc.), gene insertions (such as xdhA), and large-scale deletions of genes (such as tRNA genes)