tonoplast
/ˈtəʊnə(ʊ)plast
/ /ˈtəʊnə(ʊ)plɑːst/noun Botany
A membrane which bounds the chief vacuole of a plant cell.However, these cells had a continuous layer of smooth plasma membrane, and central vacuoles had distinct tonoplasts....
- MIPs are abundant proteins localized to the plasma membrane, the tonoplast, or other endomembranes of plant cells.
- The tonoplast of K. daigremontiana mesophyll cells exhibits circadian behaviour of malate retention under constant darkness.
Origin
Late 19th century: from Greek tonos 'tension, tone' + plastos 'formed'.