Formation and functions
Tannosomes are formed when the chloroplast membrane forms pockets filled with tannin. Slowly, the pockets break off as tiny vacuoles that carry tannins to the large vacuole filled with acidic fluid. Tannins are then released into the vacuole and stored inside as tannin accretions.
They are responsible for synthesizing and producing condensed tannins and polyphenols. Tannosomes condense tannins in chlorophyllous organs, providing defenses against herbivores and pathogens, and protection against UV radiation.
- "Tannosome". Science News. 2013-10-30. Retrieved 2014-08-24.
- Kerry Grens (2013-09-23). "New Organelle: The Tannosome". The Scientist Magazine®. Retrieved 2014-08-22.
- Brillouet, J. -M.; Romieu, C.; Schoefs, B.; Solymosi, K.; Cheynier, V.; Fulcrand, H.; Verdeil, J. -L.; Conejero, G. (2013). "The tannosome is an organelle forming condensed tannins in the chlorophyllous organs of Tracheophyta". Annals of Botany. 112 (6): 1003. doi:10.1093/aob/mct168. PMC 3783233. PMID 24026439.