Figure 1.

(a) Schematic microfluidic setup for droplet encapsulation of highly motile P. sojae zoospores. A zoospore suspension was preloaded directly into a microtubing with a reduced inner diameter. Flow rate of each flow was controlled by a syringe pump. (b) Time-lapse images extracted from a movie showing a typical process of droplet formation and zoospore encapsulation. Blue, red, and white circles indicate three different zoospores, respectively. The time interval for trapping these zoospores was not uniform because zoospores were not exactly uniformly distributed inside a microtubing and thus they arrived at a T-junction at different time instants. t is time in seconds. (c) Droplets containing both zoospores and a chemical were collected in a collecting reservoir. (d) Encapsulated zoospores in droplets. Zoospores are highlighted with white circles. Scale bars in (b) and (d) represent 100 μm.