Os05g0420300

The rice Os05g0420300 was reported as SERF1 in 2013 by researchers from China.

Annotated Information

Figure 2. SERF1 Is Specifically Induced by Salt Stress and H2O2 Treatment and Is Expressed in the Vascular Tissues of Roots and Leaves...

Function

• ERF1 Regulates Reactive Oxygen Species–Dependent Signaling during the Initial Response to Salt Stress in Rice
• Loss of SERF1 impairs the salt-inducible expression of genes encoding members of a mitogen-activated protein kinase (MAPK) cascade and salt tolerance–mediating TFs.
• SERF1 is a phosphorylation target of MAPK5, resulting in enhanced transcriptional activity of SERF1 toward its direct target genes.
• SERF1 amplifies the reactive oxygen species–activated MAPK cascade signal during the initial phase of salt stress and translates the salt-induced signal into an appropriate expressional response resulting in salt tolerance.

Expression

• Application of ABA or mannitol did not affect the expression of SERF1.
• By contrast, as observed for salt stress, H2O2 treatment caused an upregulation of SERF1 within 30 min exclusively in roots, albeit an induction was also observed after 3 h of treatment.
• Rice plants expressing a b-glucuronidase (GUS) reporter gene fused to a 1-kb promoter of SERF1 exhibited GUS activity in the vascular cylinder of the root and the main and commissural veins of leaves (Figure 2B).

Subcellular localization

• Although SERF1 does not contain a known nuclear localization signal, stable transformation of rice plants with a construct encoding a CFP-tagged version of SERF1 revealed nuclear localization of SERF1 in leaf epidermal cells (Figure 2C).

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Labs working on this gene

• Institute of Biochemistry and Biology, University of Potsdam, 14476 Potsdam, Germany
• Max Planck Institute of Molecular Plant Physiology, 14476 Potsdam, Germany
• Centre de Coopération Internationale en Recherche Agronomique pour le Développement, Unité Mixte de Recherche, Genetic Improvement and Adaptation of Mediterranean and Tropical Plants, 34398 Montpellier, cedex 5, France
• Department of Molecular Genetics, Centre for Research in Agricultural Genomics, Consejo Superior de Investigaciones Científicos, Institute of Agro-food Research and Technology, Autonomus University of Barcelona, University of Barcelona, Bellaterra (Cerdanyola del Vallés), 08193 Barcelona, Spain