151. The LOB-like transcription factor Mt LBD1 controls Medicago truncatula root architecture under salt stress
- Author
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Martin Crespi, Federico Ariel, Anouck Diet, Raquel Lia Chan, Instituto de Agrobiotecnología del Litoral [Santa Fe] (IAL), Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] (CONICET)-Universidad Nacional del Litoral [Santa Fe] (UNL), Institut des sciences du végétal (ISV), Centre National de la Recherche Scientifique (CNRS), and Le Roux, Pascale
- Subjects
LBD ,MESH: Sodium Chloride ,Otras Ciencias Biológicas ,MESH: Plant Roots ,Plant Science ,Root system ,root architecture ,Sodium Chloride ,Biology ,Plant Roots ,lateral roots ,Ciencias Biológicas ,chemistry.chemical_compound ,Stress, Physiological ,Auxin ,Medicago truncatula ,Botany ,[SDV.BV]Life Sciences [q-bio]/Vegetal Biology ,[SDV.BV] Life Sciences [q-bio]/Vegetal Biology ,MESH: Stress, Physiological ,Transcription factor ,Abscisic acid ,MESH: Medicago truncatula ,salt stress ,2. Zero hunger ,chemistry.chemical_classification ,Medicago ,Lateral root ,fungi ,food and beverages ,MESH: Transcription Factors ,15. Life on land ,biology.organism_classification ,LOB-like ,Article Addendum ,chemistry ,CIENCIAS NATURALES Y EXACTAS ,Transcription Factors ,Hormone - Abstract
Lateral root (LR) formation and emergence are influenced by the environment and determines the architecture of the root system in the soil. Whereas auxins appear as the main hormone controlling LR initiation, patterning and emergence, abscisic acid (ABA) is the key hormone mediating the effect of the environment on root architecture. Hormone signaling act through transcription factors (TFs) and the Medicago truncatula LOB-like TF LBD1 was shown to be auxin-inducible but repressed by the HD-Zip I TF MtHB1 in response to salt stress and ABA during LR formation. Here, we demonstrate that the constitutive expression of Mt LBD1 in Medicago roots alters their global architecture when the plant is subjected to salt stress. Hence, LBD1 may control the final form of the root system in the soil environment. Fil: Ariel, Federico Damian. 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: Diet, Anouck. Centre National de la Recherche Scientifique; Francia Fil: Crespi, Martin. Centre National de la Recherche Scientifique; Francia 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
- Published
- 2010