JUNGBRUNNEN1 confers drought tolerance downstream of the HD-Zip I Transcription factor AtHB13

Authors
Ebrahimian Motlagh, Saghar; Ribone, Pamela Anahí; Thirumalaikumar, Venkatesh P.; Allu, Annapurna D.; Chan, Raquel Lia; Mueller Roeber, Bernd; Balazadeh, Salma
Publication Year
2017
Language
English
Format
article
Status
Published version
Description
Low water availability is the major environmental factor limiting growth and productivity of plants and crops and is therefore considered of high importance for agriculture affected by climate change. Identifying regulatory components controlling the response and tolerance to drought stress is thus of major importance. The NAC transcription factor (TF) JUNGBRUNNEN1 (JUB1) from Arabidopsis thaliana extends leaf longevity under non-stress growth conditions, lowers cellular hydrogen peroxide (H2O2) level, and enhances tolerance against heat stress and salinity. Here, we additionally find that JUB1 strongly increases tolerance to drought stress in Arabidopsis when expressed from both, a constitutive (CaMV 35S) and an abiotic stress-induced (RD29A) promoter. Employing a yeast one-hybrid screen we identified HD-Zip class I TF AtHB13 as an upstream regulator of JUB1. AtHB13 has previously been reported to act as a positive regulator of drought tolerance. AtHB13 and JUB1 thereby establish a joint drought stress control module.
Fil: Ebrahimian Motlagh, Saghar. University of Potsdam; Alemania. Max Planck Institute of Molecular Plant Physiology; Alemania
Fil: Ribone, Pamela Anahí. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina
Fil: Thirumalaikumar, Venkatesh P.. Max Planck Institute of Molecular Plant Physiology; Alemania. University of Potsdam; Alemania
Fil: Allu, Annapurna D.. Max Planck Institute of Molecular Plant Physiology; Alemania. University of Potsdam; Alemania
Fil: Chan, Raquel Lia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina
Fil: Mueller Roeber, Bernd. University of Potsdam; Alemania. Max Planck Institute of Molecular Plant Physiology; Alemania
Fil: Balazadeh, Salma. University of Potsdam; Alemania. Max Planck Institute of Molecular Plant Physiology; Alemania
Subject
ARABIDOPSIS
DROUGHT
HB13
JUB1
TRANSCRIPTION FACTOR
Otras Ciencias Biológicas
Ciencias Biológicas
CIENCIAS NATURALES Y EXACTAS
Access level
Open 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:11336/48915