Involvement of superoxide radical in signal transduction regulating stomatal movements.

Abstract:

:Stomatal movements are regulated by alternate phase transition in the lipophilic domains of membrane initiated by blue light through activation of plasmalemma redox system. ABA blocks the blue light activated redox reactions leading to the accumulation of superoxide (O2.-) radical inducing melting of the membrane and increased fluidity. Phenolic compounds which reverse the ABA effects reduce O2.- radical and thereby reverse phase transition in lipophilic domains of membrane. Stomatal movements thus appear to be regulated by blue light activated redox reactions involving formation of O2.- radical and its reduction by the reducing equivalents available in the GCPs.

authors

Purohit S,Kumar GP,Laloraya M,Laloraya MM

doi

10.1006/bbrc.1994.2625

subject

Has Abstract

pub_date

1994-11-30 00:00:00

pages

30-7

issue

1

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(84)72625-8

journal_volume

205

pub_type

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