Liberibacter asiaticus reduced the activity of host detoxifying enzymes such as glutathione-S-transferase (GST) and cytochrome P450 [31], and infection with a high titer of Phytoplasma inhibited the activity of host detoxifying enzymes such as β-esterase and GST in Amplicephalus curtulus [41]. Here, HPGDS is linked to infection.