Abscisic acid mediates hydrogen peroxide production in peanut induced by water stress

Authors
Furlan, Ana Laura; Llanes, Analia Susana; Luna, Maria Virginia; Castro, Stella Maris
Publication Year
2012
Language
English
Format
article
Status
Published version
Description
Peanut plants exposed to water stress induced by polyethylene glycol (PEG) accumulated abscisic acid (ABA) and hydrogen peroxide (H2O2), the increase being significant at 12 and 24 h after addition, respectively. To address the question whether the increase in H2O2 production was related to ABA accumulation, the peanut leaves were pretreated with ABA biosynthesis inhibitor (sodium tungstate) and then exposed to water stress. Under these conditions, a decrease of ABA and H2O2 content were found after 12 h. The addition of 100 µM ABA restored H2O2 content reaching values similar to those under water stress at 12 h. We concluded that ABA accumulation is the first signal that triggers the H2O2 generation in peanut during first 12 h but its subsequent production is partially ABA-independent.
Fil: Furlan, Ana Laura. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquimicas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Llanes, Analia Susana. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquimicas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Luna, Maria Virginia. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquimicas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Castro, Stella Maris. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquimicas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Subject
ABSCISIC ACID
HYDROGEN PEROXIDE
PEANUT
WATER STRESS
Ética relacionada con Biotecnología Agrícola
Biotecnología Agropecuaria
CIENCIAS AGRÍCOLAS
Access level
Restricted access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/22938