Interaction of intracellular hydrogen peroxide accumulation with nitric oxide production in abscisic acid signaling in guard cells. Issue 7 (2nd July 2020)

• Record Type: Journal Article
• Authors: Jannat, Rayhanur; Senba, Takanori; Muroyama, Daichi; Uraji, Misugi; Hossain, Mohammad Anowar; Islam, Mohammad Muzahidul; Nakamura, Yoshimasa; Munemasa, Shintaro; Mori, Izumi C.; Murata, Yoshiyuki
• Is Part Of: Bioscience, biotechnology, and biochemistry. Volume 84:Issue 7(2020)
• Page Start: 1418
• Page End: 1426
• Publication Date: 2020-07-02
• Subjects: Abscisic acid -- catalase -- hydrogen peroxide -- nitric oxide -- stomatal closure; Biotechnology -- Periodicals; Biochemistry -- Periodicals; 660.6
• DOI: 10.1080/09168451.2020.1743168
• Languages: English
• ISSNs: 0916-8451

Abstract

ABSTRACT: Reactive oxygen species and nitric oxide (NO) concomitantly play essential roles in guard cell signaling. Studies using catalase mutants have revealed that the inducible and constitutive elevations of intracellular hydrogen peroxide (H2 O2 ) have different roles: only the inducible H2 O2 production transduces the abscisic acid (ABA) signal leading stomatal closure. However, the involvement of inducible or constitutive NO productions, if exists, in this process remains unknown. We studied H2 O2 and NO mobilization in guard cells of catalase mutants. Constitutive H2 O2 level was higher in the mutants than that in wild type, but constitutive NO level was not different among lines. Induced NO and H2 O2 levels elicited by ABA showed a high correlation with each other in all lines. Furthermore, NO levels increased by exogenous H2 O2 also showed a high correlation with stomatal aperture size. Our results demonstrate that ABA-induced intracellular H2 O2 accumulation triggers NO production leading stomatal closure. Abbreviations: ABA: abscisic acid; CAT: catalase; cGMP: cyclic guanosine monophosphate; DAF-2DA: 4, 5-diaminofluorescein-2 diacetate; H2 DCF-DA: 2ʹ, 7ʹ-dichlorodihydrofluorescein diacetate; MeJA: methyljasmonate; NOS: nitric oxide synthetase; NR: nitrate reductase; POX: peroxidase; ROS: reactive oxygen species; SNAP: S -nitroso- N -acetyl-DL-penicillamine; SNP: sodium nitroprusside; NOX: NADP(H) oxidase. GRAPHICAL ABSTRACT: uf0001 ABA-induced nitric oxide (NO) production in guard cells is associated with preceding hydrogen peroxide (H2 O2 ) production that is decayed by catalase (CAT).