TY - JOUR
T1 - Mimosa pudica
T2 - Electrical and mechanical stimulation of plant movements
AU - Volkov, Alexander G.
AU - Foster, Justin C.
AU - Ashby, Talitha A.
AU - Walker, Ronald K.
AU - Johnson, Jon A.
AU - Markin, Vladislav S.
PY - 2010/2
Y1 - 2010/2
N2 - Thigmonastic movements in the sensitive plant Mimosa pudica L., associated with fast responses to environmental stimuli, appear to be regulated through electrical and chemical signal transductions. The thigmonastic responses of M. pudica can be considered in three stages: stimulus perception, electrical signal transmission and induction of mechanical, hydrodynamical and biochemical responses. We investigated the mechanical movements of the pinnae and petioles in M. pudica induced by the electrical stimulation of a pulvinus, petiole, secondary pulvinus or pinna by a low electrical voltage and charge. The threshold value was 1.3-1.5 V of applied voltage and 2 to 10 μC of charge for the closing of the pinnules. Both voltage and electrical charge are responsible for the electro-stimulated closing of a leaf. The mechanism behind closing the leaf in M. pudica is discussed. The hydroelastic curvature mechanism closely describes the kinetics of M. pudica leaf movements.
AB - Thigmonastic movements in the sensitive plant Mimosa pudica L., associated with fast responses to environmental stimuli, appear to be regulated through electrical and chemical signal transductions. The thigmonastic responses of M. pudica can be considered in three stages: stimulus perception, electrical signal transmission and induction of mechanical, hydrodynamical and biochemical responses. We investigated the mechanical movements of the pinnae and petioles in M. pudica induced by the electrical stimulation of a pulvinus, petiole, secondary pulvinus or pinna by a low electrical voltage and charge. The threshold value was 1.3-1.5 V of applied voltage and 2 to 10 μC of charge for the closing of the pinnules. Both voltage and electrical charge are responsible for the electro-stimulated closing of a leaf. The mechanism behind closing the leaf in M. pudica is discussed. The hydroelastic curvature mechanism closely describes the kinetics of M. pudica leaf movements.
KW - Charged capacitor method
KW - Electrical signaling
KW - Motor cells
KW - Plant electrophysiology
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U2 - 10.1111/j.1365-3040.2009.02066.x
DO - 10.1111/j.1365-3040.2009.02066.x
M3 - Article
C2 - 19895396
AN - SCOPUS:73949120795
SN - 0140-7791
VL - 33
SP - 163
EP - 173
JO - Plant, Cell and Environment
JF - Plant, Cell and Environment
IS - 2
ER -