OsIAA1

2015-01-20 | Categories genes  | Tags iaa  height  BR  auxin  seedling  brassinosteroid  root  architecture 

• Information
  • Symbol: OsIAA1
  • MSU: LOC_Os01g08320
  • RAPdb: Os01g0178500
• Publication
  • Characterization of OsIAA1 gene, a member of rice Aux/IAA family involved in auxin and brassinosteroid hormone responses and plant morphogenesis, 2009, Plant Mol Biol.
  • OsIAA1, an Aux/IAA cDNA from Rice, and Changes in Its Expression as Influenced by Auxin and Light, 2001, DNA Research.
  • Ectopic Overexpression of an AUXIN/INDOLE-3-ACETIC ACID Aux/IAA Gene OsIAA4 in Rice Induces Morphological Changes and Reduces Responsiveness to Auxin, 2013, Int J Mol Sci.
  • Distinctive expression patterns and roles of the miRNA393/TIR1 homolog module in regulating flag leaf inclination and primary and crown root growth in rice Oryza sativa, 2012, New Phytol.
  • Functional analysis of auxin receptor OsTIR1/OsAFB family members in rice grain yield, tillering, plant height, root system, germination, and auxinic herbicide resistance, 2020, New Phytol.
  • Rice EIL1 interacts with OsIAAs to regulate auxin biosynthesis mediated by the tryptophan aminotransferase MHZ10/OsTAR2 during root ethylene responses., 2022, Plant Cell.
• Genbank accession number
  • AK100800
• Key message
  • Indica) OsIAA1 cDNA as a monocot member of the Aux/IAA gene family
  • The predicted amino acid sequence of OsIAA1 corresponds to a protein of ca
  • Northern blot analysis revealed that the OsIAA1 transcript levels decrease in the excised coleoptile segments on auxin starvation, and the level is restored when auxin is supplemented; the increase in OsIAA1 transcript level was apparent within 15 to 30 min of auxin application
  • Auxin-induced OsIAA1 expression appears to be correlated with the elongation of excised coleoptile segments
  • In light-grown rice seedlings, OsIAA1 is preferentially expressed in roots and basal segment of the seedling, whereas in the etiolated rice seedlings, the OsIAA1 transcripts are most abundant in the coleoptile
  • A comparative analysis in light- and dark-grown seedling tissues indicates that the OsIAA1 transcript levels decrease on illumination
  • OsIAA1, an Aux/IAA cDNA from Rice, and Changes in Its Expression as Influenced by Auxin and Light
  • In addition, the OsIAA1-overexpression transgenic plants showed distinctive morphological changes such as decreased plant height and loose plant architecture
  • T-DNA insertion mutant of OsARF1 showed reduced sensitivity to BR treatment, resembling the phenotype of OsIAA1-overexpression plants
  • Over-expression of OsIAA1 in rice resulted in reduced inhibition of root elongation to auxin treatment, but increased sensitivity to 24-epiBL treatment
  • In addition, expression patterns of some genes responsive to brassinosteroid and auxin were changed in the OsIAA1-overexpression plants
  • These data suggested that OsIAA1 may play important roles in the cross-talk of auxin and brassinosteroid signaling pathways and plant morphogenesis
  • Characterization of OsIAA1 gene, a member of rice Aux/IAA family involved in auxin and brassinosteroid hormone responses and plant morphogenesis
  • Moreover, yeast two-hybrid and bimolecular fluorescence complementation assays showed that OsTIR1 and OsAFB2 interact with OsIAA1
  • This work focused on isolation and characterization of a member of Aux/IAA family in rice named OsIAA1
  • The results indicated that OsIAA1 was constitutively expressed in all the tissues and organs investigated
  • Protein interaction analysis suggested that OsIAA1 may act through interaction with OsARF1
• Connection
  • OsAFB2, OsIAA1, Distinctive expression patterns and roles of the miRNA393/TIR1 homolog module in regulating flag leaf inclination and primary and crown root growth in rice Oryza sativa, Moreover, yeast two-hybrid and bimolecular fluorescence complementation assays showed that OsTIR1 and OsAFB2 interact with OsIAA1
  • OsIAA1, OsTIR1, Distinctive expression patterns and roles of the miRNA393/TIR1 homolog module in regulating flag leaf inclination and primary and crown root growth in rice Oryza sativa, Moreover, yeast two-hybrid and bimolecular fluorescence complementation assays showed that OsTIR1 and OsAFB2 interact with OsIAA1
  • OsIAA1, OsIAA11, Functional analysis of auxin receptor OsTIR1/OsAFB family members in rice grain yield, tillering, plant height, root system, germination, and auxinic herbicide resistance, All five OsTIR1/AFB members interacted with OsIAA1 and OsIAA11 proteins in vivo

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