A molecular switch: antitoxin HigA integrates transcriptional activation by XreR and proteolytic clearance by Lon to balance virulence and stress adaptation in the fish pathogen Edwardsiella piscicida - Yin Gou; Jingjing Sui; Jinggang Dong; Jun Li; Baocun Zhang; Qingjian Fang; Guoqing Wang; Hanjie Gu; Yonghua Hu (Marine Life Science & Technology, 2026)