Viable Pseudomonas sp. GM17 are stained green (with Syto9), and dead cells are stained red (with propidium iodide). The root surface is visualized by autofluorescence.
Credit or Source: J. L. Morrell-Falvey, Oak Ridge National Laboratory
U.S. DOE. 2014. Research for Sustainable Bioenergy: Linking Genomic and Ecosystem Sciences, Workshop Report, DOE/SC-0167. U.S. Department of Energy Office of Science. genomicscience.energy.gov/sustainability/. (p. 12) (PDF)