title: Extracellular ATP and nitric oxide signaling pathways regulate redox-dependent responses associated to root hair growth in etiolated Arabidopsis seedlings.
abstract: Extracellular ATP (eATP) and nitric oxide (NO) have emerged as crucial players in plant development, stress responses and cell viability. Glutathione (GSH) is an abundant reducing agent with proposed roles in plant growth, development and stress physiology. In a recent publication, we demonstrated that eATP and NO restore hypocotyl elongation of etiolated Arabidopsis seedlings treated with GSH. Here it is reported that exogenous ATP also restore root hair growth suggesting a role for ATP and NO in the regulation of redox balance associated to specific processes of plant morphogenesis. A tentative model integrating redox-, eATP- and NO- signaling pathways during root hair growth in Arabidopsis seedlings is presented.
authors.affiliation: Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Instituto de Investigaciones Biológicas, UE-CONICET-UNMDP, Mar del Plata, Argentina.
authors.forename: María Cecilia
authors.initials: MC
authors.lastname: Terrile
authors.forename: Claudia Virginia
authors.initials: CV
authors.lastname: Tonón
authors.forename: María José
authors.initials: MJ
authors.lastname: Iglesias
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Lamattina
authors.forename: Claudia Anahí
authors.initials: CA
authors.lastname: Casalongué
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