when the section of pulvinus was irradiated with a microbeam of far red light in one part of the section , and the motor cell vacuoles in another area were monitored for contraction , they almost always responded.we therefore conclude that the contractile vacuole of the motor cell is an excellent cellular correlate of phytochrome-mediated nyctinasty in m. pudica , and discuss its possible causal role in regulating the phenomenon .
C0042219
cell vacuoles
C0007634
cellular