Journal Article molecular detection phytoplasma 16SrI-B subgroup 16SrII group Anti-Bacterial Agents Emilia sonchifolia witches’-broom disease Fluorescent Dyes Research Support, Non-U.S. Gov't Waltheria indica virescence disease aggregation-induced emission antibiotics screening bacterial imaging bacterial susceptibility fluorescence turn-on high-throughput mitochondrion-specific photoactivatable fluorophores photocyclodehydrogenation super-resolution imaging