title: Salt-Related MYB1 Coordinates Abscisic Acid Biosynthesis and Signaling during Salt Stress in Arabidopsis.
abstract: Abiotic stresses, such as salinity, cause global yield loss of all major crop plants. Factors and mechanisms that can aid in plant breeding for salt stress tolerance are therefore of great importance for food and feed production. Here, we identified a MYB-like transcription factor, Salt-Related MYB1 (SRM1), that negatively affects Arabidopsis (Arabidopsis thaliana) seed germination under saline conditions by regulating the levels of the stress hormone abscisic acid (ABA). Accordingly, several ABA biosynthesis and signaling genes act directly downstream of SRM1, including SALT TOLERANT1/NINE-CIS-EPOXYCAROTENOID DIOXYGENASE3, RESPONSIVE TO DESICCATION26, and Arabidopsis NAC DOMAIN CONTAINING PROTEIN19. Furthermore, SRM1 impacts vegetative growth and leaf shape. We show that SRM1 is an important transcriptional regulator that directly targets ABA biosynthesis and signaling-related genes and therefore may be regarded as an important regulator of ABA-mediated salt stress tolerance.
authors.affiliation: Max-Planck Institute for Molecular Plant Physiology, 14476 Potsdam, Germany (T.W., T.T., A.I., B.M.-R., A.R.F., M.M., J.H.M.S., S.P.);Molecular Biology, University of Potsdam, 14476 Potsdam, Germany (B.M.-R.);Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074 Aachen, Germany (J.H.M.S.); andSchool of Biosciences, University of Melbourne, Parkville, Victoria 3010, Australia (S.P.).
authors.forename: Ting
authors.identifier: http://orcid.org/0000-0002-6845-600X
authors.initials: T
authors.lastname: Wang
authors.affiliation: Max-Planck Institute for Molecular Plant Physiology, 14476 Potsdam, Germany (T.W., T.T., A.I., B.M.-R., A.R.F., M.M., J.H.M.S., S.P.);Molecular Biology, University of Potsdam, 14476 Potsdam, Germany (B.M.-R.);Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074 Aachen, Germany (J.H.M.S.); andSchool of Biosciences, University of Melbourne, Parkville, Victoria 3010, Australia (S.P.).
authors.forename: Takayuki
authors.initials: T
authors.lastname: Tohge
authors.affiliation: Max-Planck Institute for Molecular Plant Physiology, 14476 Potsdam, Germany (T.W., T.T., A.I., B.M.-R., A.R.F., M.M., J.H.M.S., S.P.);Molecular Biology, University of Potsdam, 14476 Potsdam, Germany (B.M.-R.);Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074 Aachen, Germany (J.H.M.S.); andSchool of Biosciences, University of Melbourne, Parkville, Victoria 3010, Australia (S.P.).
authors.forename: Alexander
authors.identifier: http://orcid.org/0000-0003-4091-1135
authors.initials: A
authors.lastname: Ivakov
authors.affiliation: Max-Planck Institute for Molecular Plant Physiology, 14476 Potsdam, Germany (T.W., T.T., A.I., B.M.-R., A.R.F., M.M., J.H.M.S., S.P.);Molecular Biology, University of Potsdam, 14476 Potsdam, Germany (B.M.-R.);Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074 Aachen, Germany (J.H.M.S.); andSchool of Biosciences, University of Melbourne, Parkville, Victoria 3010, Australia (S.P.).
authors.forename: Bernd
authors.initials: B
authors.lastname: Mueller-Roeber
authors.affiliation: Max-Planck Institute for Molecular Plant Physiology, 14476 Potsdam, Germany (T.W., T.T., A.I., B.M.-R., A.R.F., M.M., J.H.M.S., S.P.);Molecular Biology, University of Potsdam, 14476 Potsdam, Germany (B.M.-R.);Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074 Aachen, Germany (J.H.M.S.); andSchool of Biosciences, University of Melbourne, Parkville, Victoria 3010, Australia (S.P.).
authors.forename: Alisdair R
authors.initials: AR
authors.lastname: Fernie
authors.affiliation: Max-Planck Institute for Molecular Plant Physiology, 14476 Potsdam, Germany (T.W., T.T., A.I., B.M.-R., A.R.F., M.M., J.H.M.S., S.P.);Molecular Biology, University of Potsdam, 14476 Potsdam, Germany (B.M.-R.);Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074 Aachen, Germany (J.H.M.S.); andSchool of Biosciences, University of Melbourne, Parkville, Victoria 3010, Australia (S.P.).
authors.forename: Marek
authors.initials: M
authors.lastname: Mutwil
authors.affiliation: Max-Planck Institute for Molecular Plant Physiology, 14476 Potsdam, Germany (T.W., T.T., A.I., B.M.-R., A.R.F., M.M., J.H.M.S., S.P.);Molecular Biology, University of Potsdam, 14476 Potsdam, Germany (B.M.-R.);Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074 Aachen, Germany (J.H.M.S.); andSchool of Biosciences, University of Melbourne, Parkville, Victoria 3010, Australia (S.P.).
authors.forename: Jos H M
authors.identifier: http://orcid.org/0000-0001-7934-126X
authors.initials: JH
authors.lastname: Schippers
authors.affiliation: Max-Planck Institute for Molecular Plant Physiology, 14476 Potsdam, Germany (T.W., T.T., A.I., B.M.-R., A.R.F., M.M., J.H.M.S., S.P.);Molecular Biology, University of Potsdam, 14476 Potsdam, Germany (B.M.-R.);Institute of Biology I, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074 Aachen, Germany (J.H.M.S.); andSchool of Biosciences, University of Melbourne, Parkville, Victoria 3010, Australia (S.P.) staffan.persson@unimelb.edu.au.
authors.forename: Staffan
authors.identifier: http://orcid.org/0000-0002-6377-5132
authors.initials: S
authors.lastname: Persson
mesh_terms: D000040:Abscisic Acid / Q000096:biosynthesis*; D017360:Arabidopsis / Q000235:genetics / Q000502:physiology*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism*; D049308:Dioxygenases / Q000235:genetics / Q000378:metabolism; D018506:Gene Expression Regulation, Plant; D018525:Germination; D018515:Plant Leaves / Q000502:physiology; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism; D030821:Plants, Genetically Modified; D011401:Promoter Regions, Genetic; D020598:Proto-Oncogene Proteins c-myb / Q000235:genetics / Q000378:metabolism*; D055049:Salt Tolerance / Q000235:genetics; D012639:Seeds / Q000502:physiology; D015398:Signal Transduction; D013312:Stress, Physiological; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism*
chemical_list: D000040:Abscisic Acid; D029681:Arabidopsis Proteins; D049308:Dioxygenases; D010940:Plant Proteins; D020598:Proto-Oncogene Proteins c-myb; D014157:Transcription Factors; C493659:NAC019 protein, Arabidopsis; C493887:RD26 protein, Arabidopsis; C109043:9-cis-epoxy-carotenoid dioxygenase