Next Article in Journal / Special Issue
Polyamine Oxidases Play Various Roles in Plant Development and Abiotic Stress Tolerance
Previous Article in Journal
Diversification of African Tree Legumes in Miombo–Mopane Woodlands
Previous Article in Special Issue
Polyamines as Quality Control Metabolites Operating at the Post-Transcriptional Level
Article Menu
Issue 6 (June) cover image

Export Article

Open AccessArticle

The Copper Amine Oxidase AtCuAOδ Participates in Abscisic Acid-Induced Stomatal Closure in Arabidopsis

1
Department of Science, Università Roma Tre, 00146 Roma, Italy
2
Institute of Plant Sciences, The Volcani Center, ARO, Bet Dagan 50250, Israel
3
Istituto Nazionale Biostrutture e Biosistemi (INBB), 00136 Rome, Italy
4
Department of Life, Health, and Environmental Sciences, Università dell’Aquila, 67100 L’Aquila, Italy
*
Author to whom correspondence should be addressed.
Plants 2019, 8(6), 183; https://doi.org/10.3390/plants8060183
Received: 10 May 2019 / Revised: 14 June 2019 / Accepted: 17 June 2019 / Published: 20 June 2019
(This article belongs to the Special Issue Plant Polyamines)
  |  
PDF [2290 KB, uploaded 20 June 2019]
  |  

Abstract

Plant copper amine oxidases (CuAOs) are involved in wound healing, defense against pathogens, methyl-jasmonate-induced protoxylem differentiation, and abscisic acid (ABA)-induced stomatal closure. In the present study, we investigated the role of the Arabidopsis thaliana CuAOδ (AtCuAOδ; At4g12290) in the ABA-mediated stomatal closure by genetic and pharmacological approaches. Obtained data show that AtCuAOδ is up-regulated by ABA and that two Atcuaoδ T-DNA insertional mutants are less responsive to this hormone, showing reduced ABA-mediated stomatal closure and H2O2 accumulation in guard cells as compared to the wild-type (WT) plants. Furthermore, CuAO inhibitors, as well as the hydrogen peroxide (H2O2) scavenger N,N1-dimethylthiourea, reversed most of the ABA-induced stomatal closure in WT plants. Consistently, AtCuAOδ over-expressing transgenic plants display a constitutively increased stomatal closure and increased H2O2 production compared to WT plants. Our data suggest that AtCuAOδ is involved in the H2O2 production related to ABA-induced stomatal closure. View Full-Text
Keywords: copper amine oxidases; H2O2; ROS; polyamines; ABA; stomatal closure copper amine oxidases; H2O2; ROS; polyamines; ABA; stomatal closure
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Supplementary material

SciFeed

Share & Cite This Article

MDPI and ACS Style

Fraudentali, I.; Ghuge, S.A.; Carucci, A.; Tavladoraki, P.; Angelini, R.; Cona, A.; Rodrigues-Pousada, R.A. The Copper Amine Oxidase AtCuAOδ Participates in Abscisic Acid-Induced Stomatal Closure in Arabidopsis. Plants 2019, 8, 183.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Plants EISSN 2223-7747 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top