Decrease in volume of vacuole in guard cell during stomatal closure

Range ~20 %
Organism Thale cress Arabidopsis thaliana
Reference Eisenach C, De Angeli A et al., Ion Transport at the Vacuole during Stomatal Movements. Plant Physiol. 2017 Jun174(2):520-530. doi: 10.1104/pp.17.00130 p.522 right column bottom paragraphPubMed ID28381500
Primary Source Gao XQ, Wang XL, Ren F, Chen J, Wang XC (2009) Dynamics of vacuoles and actin filaments in guard cells and their roles in stomatal movement. Plant Cell Environ 32: 1108–1116 doi: 10.1111/j.1365-3040.2009.01993.xPubMed ID19422610
Comments P.522 right column bottom paragraph: "During stomatal closure, the guard cell volume decreases and, accordingly, so does the vacuolar volume, in Arabidopsis by about 20% (primary source). In V. faba and Arabidopsis, the decrease in vacuolar membrane surface concomitant with the volume decrease is accomplished by indentation of the tonoplast and the formation of intravacuolar structures (primary source). While, in Arabidopsis, the singular vacuole of open guard cells does not seem to fragment during stomatal closure, in V. faba, the formation of separate small vacuoles has been observed in closed stomata (primary source, Andrés et al., 2014)."
Entered by Uri M
ID 114020