title: The tomato res mutant which accumulates JA in roots in non-stressed conditions restores cell structure alterations under salinity.
abstract: Jasmonic acid (JA) regulates a wide spectrum of plant biological processes, from plant development to stress defense responses. The role of JA in plant response to salt stress is scarcely known, and even less known is the specific response in root, the main plant organ responsible for ionic uptake and transport to the shoot. Here we report the characterization of the first tomato (Solanum lycopersicum) mutant, named res (restored cell structure by salinity), that accumulates JA in roots prior to exposure to stress. The res tomato mutant presented remarkable growth inhibition and displayed important morphological alterations and cellular disorganization in roots and leaves under control conditions, while these alterations disappeared when the res mutant plants were grown under salt stress. Reciprocal grafting between res and wild type (WT) (tomato cv. Moneymaker) indicated that the main organ responsible for the development of alterations was the root. The JA-signaling pathway is activated in res roots prior to stress, with transcripts levels being even higher in control condition than in salinity. Future studies on this mutant will provide significant advances in the knowledge of JA role in root in salt-stress tolerance response, as well as in the energy trade-off between plant growth and response to stress.
authors.affiliation: Department of Stress Biology and Plant Pathology, CEBAS-CSIC, P.O. Box 164, 30100, Espinardo-Murcia, Spain.
authors.forename: José O
authors.initials: JO
authors.lastname: Garcia-Abellan
authors.affiliation: Department of Stress Biology and Plant Pathology, CEBAS-CSIC, P.O. Box 164, 30100, Espinardo-Murcia, Spain.
authors.forename: Nieves
authors.initials: N
authors.lastname: Fernandez-Garcia
authors.affiliation: Department of Stress Biology and Plant Pathology, CEBAS-CSIC, P.O. Box 164, 30100, Espinardo-Murcia, Spain.
authors.forename: Carmen
authors.initials: C
authors.lastname: Lopez-Berenguer
authors.affiliation: Department of Stress Biology and Plant Pathology, CEBAS-CSIC, P.O. Box 164, 30100, Espinardo-Murcia, Spain.
authors.forename: Isabel
authors.initials: I
authors.lastname: Egea
authors.affiliation: Department of Stress Biology and Plant Pathology, CEBAS-CSIC, P.O. Box 164, 30100, Espinardo-Murcia, Spain.
authors.forename: Francisco B
authors.initials: FB
authors.lastname: Flores
authors.affiliation: Agro-Food Biotechnology Research Centre (BITAL), University of Almería, La Cañada de San Urbano, 04120, Almería, Spain.
authors.forename: Trinidad
authors.initials: T
authors.lastname: Angosto
authors.affiliation: Agro-Food Biotechnology Research Centre (BITAL), University of Almería, La Cañada de San Urbano, 04120, Almería, Spain.
authors.forename: Juan
authors.initials: J
authors.lastname: Capel
authors.affiliation: Agro-Food Biotechnology Research Centre (BITAL), University of Almería, La Cañada de San Urbano, 04120, Almería, Spain.
authors.forename: Rafael
authors.initials: R
authors.lastname: Lozano
authors.affiliation: Department of Plant Biotechnology and In Vitro Culture, IBMCP-UPV/CSIC, Camino de Vera s/n, 46022, Valencia, Spain.
authors.forename: Benito
authors.initials: B
authors.lastname: Pineda
authors.affiliation: Department of Plant Biotechnology and In Vitro Culture, IBMCP-UPV/CSIC, Camino de Vera s/n, 46022, Valencia, Spain.
authors.forename: Vicente
authors.initials: V
authors.lastname: Moreno
authors.affiliation: Department of Stress Biology and Plant Pathology, CEBAS-CSIC, P.O. Box 164, 30100, Espinardo-Murcia, Spain.
authors.forename: Enrique
authors.initials: E
authors.lastname: Olmos
authors.affiliation: Department of Stress Biology and Plant Pathology, CEBAS-CSIC, P.O. Box 164, 30100, Espinardo-Murcia, Spain.
authors.forename: Maria C
authors.initials: MC
authors.lastname: Bolarin
mesh_terms: D003517:Cyclopentanes / Q000378:metabolism*; D018506:Gene Expression Regulation, Plant; D018551:Solanum lycopersicum / Q000166:cytology / Q000235:genetics* / Q000378:metabolism*; D009154:Mutation; D054883:Oxylipins / Q000378:metabolism*; D059828:Plant Cells / Q000378:metabolism / Q000648:ultrastructure; D018515:Plant Leaves / Q000502:physiology; D018517:Plant Roots / Q000235:genetics / Q000378:metabolism*; D011188:Potassium / Q000378:metabolism; D054712:Salinity; D055049:Salt Tolerance / Q000502:physiology; D015398:Signal Transduction
chemical_list: D003517:Cyclopentanes; D054883:Oxylipins; C011006:jasmonic acid; D011188:Potassium