The MeAMT2 genes were mapped to the chromosomes utilizing TBtools software (Chen et al., 2020 (link)) according to the information obtained from the cassava genome database. Simultaneously, gene duplication of MeAMT2 genes was analyzed utilizing MCScanX software (Wang et al., 2012 (link)) and illustrated with TBtools. The nucleotide substitution parameters Ks (synonymous) and Ka (non-synonymous) of the duplicated genes were assessed using TBtools, and then the Ka/Ks ratio was calculated. In addition, the gene duplication information from cassava, soybean, and A. thaliana was analyzed using MCscanX software, followed by integral visualization of synteny with TBtools software (Wang et al., 2012 (link); Chen et al., 2020 (link)).
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