Fluorescence signals primarily come from chlorophyll, lignin, carotenes, and xanthophylls in plants, each with a different wavelength (color); ligninfluorescence is blue-greenish. Cell lignification is determined by using different filter sets.
Credit or Source: National Renewable Energy Laboratory and the DOE BioEnergy Science Center.
U.S. DOE. 2009. U.S. Department of Energy Office of Science Systems Biology Knowledgebase for a New Era in Biology: A Genomics:GTL Report from the May 2008 Workshop, DOE/SC-113, U.S. Department of Energy Office of Science. (p. 87) (website)
US DOE. 2009. Bioenergy Research Centers: An Overview of the Science, DOE/SC-0116, US Department of Energy. (p. 19)