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Fig. 6.2
Induction of NO
production through activation
of Ca
2+
signaling system
PAMP signal
Activation
Ca
2+
channels
Activation
Ca
2+
influx
Cytosolic Ca
2+
elevation
Ca
2+
sensor calmodulin
Binding with
NOS
NO generation
Nitrate reductase, but not nitric oxide synthase, was involved in the ABA-mediated NO
production and stomatal closure (Bright et al.
2006
). However, Yan et al. (
2007
) showed
that ABA-induced NO is synthesized by a NOS-like enzyme in
V. faba
. ABA-induced
NO is involved in ABA-induced stomatal closure; stomatal closure is part of plant
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