Ethylene-induced hyponastic growth in Arabidopsis thaliana is controlled by ERECTA

Plant J. 2010 Jan;61(1):83-95. doi: 10.1111/j.1365-313X.2009.04035.x. Epub 2009 Oct 1.

Abstract

Plants can respond quickly and profoundly to detrimental changes in their environment. For example, Arabidopsis thaliana can induce an upward leaf movement response through differential petiole growth (hyponastic growth) to outgrow complete submergence. This response is induced by accumulation of the phytohormone ethylene in the plant. Currently, only limited information is available on how this response is molecularly controlled. In this study, we utilized quantitative trait loci (QTL) analysis of natural genetic variation among Arabidopsis accessions to isolate novel factors controlling constitutive petiole angles and ethylene-induced hyponastic growth. Analysis of mutants in various backgrounds and complementation analysis of naturally occurring mutant accessions provided evidence that the leucin-rich repeat receptor-like Ser/Thr kinase gene, ERECTA, controls ethylene-induced hyponastic growth. Moreover, ERECTA controls leaf positioning in the absence of ethylene treatment. Our data demonstrate that this is not due to altered ethylene production or sensitivity.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Alleles
  • Arabidopsis / drug effects
  • Arabidopsis / genetics
  • Arabidopsis / growth & development*
  • Arabidopsis / metabolism*
  • Arabidopsis Proteins / genetics
  • Arabidopsis Proteins / physiology*
  • Ethylenes / pharmacology*
  • Gene Expression Regulation, Plant / drug effects
  • Gene Expression Regulation, Plant / genetics
  • Molecular Sequence Data
  • Plant Growth Regulators / pharmacology*
  • Plants, Genetically Modified / drug effects
  • Plants, Genetically Modified / genetics
  • Plants, Genetically Modified / growth & development
  • Plants, Genetically Modified / metabolism
  • Protein-Serine-Threonine Kinases / genetics
  • Protein-Serine-Threonine Kinases / physiology*
  • Quantitative Trait Loci / genetics
  • Receptors, Cell Surface / genetics
  • Receptors, Cell Surface / physiology*
  • Sequence Analysis, DNA

Substances

  • Arabidopsis Proteins
  • Ethylenes
  • Plant Growth Regulators
  • Receptors, Cell Surface
  • ethylene
  • ER protein, Arabidopsis
  • Protein-Serine-Threonine Kinases

Associated data

  • GENBANK/GQ368569