When a segment of a protoplasmic tube between two junctions
or branching points, is touched with a hair, a flow of cytoplasm
inside this fragment becomes blocked. The cytoplasmic flow
blocking could be due to K+ channel activation, increases in
intracellular Ca2+, temporary increases in concentration of inositol
trisphosphate, activation of adenylyl cyclase, see overviews in
. A mechanically stimulated fragment restores its conductivity
and the flow of cytoplasm in 54–59 s after the stimulation
(Table 1).
When a segment of a protoplasmic tube between two junctionsor branching points, is touched with a hair, a flow of cytoplasminside this fragment becomes blocked. The cytoplasmic flowblocking could be due to K+ channel activation, increases inintracellular Ca2+, temporary increases in concentration of inositoltrisphosphate, activation of adenylyl cyclase, see overviews in. A mechanically stimulated fragment restores its conductivityand the flow of cytoplasm in 54–59 s after the stimulation(Table 1).
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