title: Rice root curling, a response to mechanosensing, is modulated by the rice E3-ubiquitin ligase HIGH EXPRESSION OF OSMOTICALLY RESPONSIVE GENE1 (OsHOS1).
abstract: Plant development depends on the perception of external cues, such as light, gravity, touch, wind or nutrients, among others. Nevertheless, little is known regarding signal transduction pathways integrating these stimuli. Recently, we have reported the involvement of a rice E3-ubiquitin ligase (OsHOS1, HIGH EXPRESSION OF OSMOTICALLY RESPONSIVE GENE1), previously associated with abiotic stress response, in root responses to mechanical stimuli. We showed that OsHOS1 is involved in the regulation of root curling after mechanosensing and that RNAi::OsHOS1 plants failed to exhibit the root curling phenotype observed in WT. Interestingly, the straight root phenotype of these transgenics correlated with the up-regulation of rice ROOT MEANDER CURLING (OsRMC, a negative regulator of rice root curling) and was reverted by the exogenous application of jasmonic acid. Altogether, our results highlight the role of the proteasome modulating plant responses to mechanical stimuli and suggest that OsHOS1 is a hub integrating environmental and hormonal signaling into plant growth and development.
authors.affiliation: a Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Genomics of Plant Stress, Oeiras , Portugal.|b iBET, Instituto de Biologia Experimental e Tecnológica , Oeiras , Portugal.
authors.forename: T F
authors.initials: TF
authors.lastname: Lourenço
authors.affiliation: a Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Genomics of Plant Stress, Oeiras , Portugal.|b iBET, Instituto de Biologia Experimental e Tecnológica , Oeiras , Portugal.
authors.forename: T S
authors.initials: TS
authors.lastname: Serra
authors.affiliation: a Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Genomics of Plant Stress, Oeiras , Portugal.|b iBET, Instituto de Biologia Experimental e Tecnológica , Oeiras , Portugal.
authors.forename: A M
authors.initials: AM
authors.lastname: Cordeiro
authors.affiliation: c Department of Botany , University of Wisconsin , Madison , WI , USA.
authors.forename: S J
authors.initials: SJ
authors.lastname: Swanson
authors.affiliation: c Department of Botany , University of Wisconsin , Madison , WI , USA.
authors.forename: S
authors.initials: S
authors.lastname: Gilroy
authors.affiliation: a Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Genomics of Plant Stress, Oeiras , Portugal.|b iBET, Instituto de Biologia Experimental e Tecnológica , Oeiras , Portugal.
authors.forename: N J M
authors.initials: NJ
authors.lastname: Saibo
authors.affiliation: a Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa , Genomics of Plant Stress, Oeiras , Portugal.|b iBET, Instituto de Biologia Experimental e Tecnológica , Oeiras , Portugal.
authors.forename: M M
authors.initials: MM
authors.lastname: Oliveira
mesh_terms: D003517:Cyclopentanes / Q000494:pharmacology; D018506:Gene Expression Regulation, Plant / Q000187:drug effects; D040542:Mechanotransduction, Cellular / Q000187:drug effects; D012275:Oryza / Q000187:drug effects / Q000201:enzymology / Q000378:metabolism*; D054883:Oxylipins / Q000494:pharmacology; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism; D018517:Plant Roots / Q000187:drug effects / Q000201:enzymology / Q000378:metabolism*; D030821:Plants, Genetically Modified / Q000187:drug effects / Q000201:enzymology / Q000378:metabolism; D044767:Ubiquitin-Protein Ligases / Q000235:genetics / Q000378:metabolism
chemical_list: D003517:Cyclopentanes; D054883:Oxylipins; D010940:Plant Proteins; C011006:jasmonic acid; D044767:Ubiquitin-Protein Ligases
keywords: E3-ubiquitin ligase; jasmonic acid; mechanosensing; rice; root