Bacterial streaming is a phenomenon describing the movement or exit of bacterial populations out of plant tissues after the tissues are severed in water.
How to test for bacterial streaming:
1) Examining leaf sections with light microscopy. Make sections of leaf tisses from the water-soaked margins of lesions. Place on a slide in a drop of water, cover with a cover glass, and examine at 100-200X of masses of bacterial cells that stream outr of affected leaf vines and ttissues.
2) Examining plant stems or rhizomes with the unaided eye. Sever a stem or rhizome and suspend it in a glass of water and wait for the masses of whitich bacterial colonized to stream from teh veins and tissues at the cut end of the stem or rhisome.