Interestingly, we found that the expression of putative tryptophan decarboxylase (TDC), LmTdc (NCBI accession number: MK140601), similar to the MrTdc of MAA (40% identity at the amino acid level) that produces tryptamine, was not affected in locusts after infection by both Metarhizium species (Fig 2C). This evidence concerns the gene NAA10 and infection.