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@ARTICLE{Wu:58481,
      author       = {Wu, J. and Kurten, E.L. and Monshausen, G. and Hummel, G.
                      M. and Gilroy, S. and Baldwin, I. T.},
      title        = {{N}a{RALF}, a peptide signal essential for the regulation
                      of root hair tip apoplastic p{H} in {N}icotiana attenuata,
                      is required for root hair development and plant growth in
                      native soils},
      journal      = {The plant journal},
      volume       = {52},
      issn         = {0960-7412},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {PreJuSER-58481},
      pages        = {877 - 890},
      year         = {2007},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Rapid alkalinization factor (RALF) is a 49-amino-acid
                      peptide that rapidly alkalinizes cultivated tobacco cell
                      cultures. In the native tobacco Nicotiana attenuata, NaRALF
                      occurs as a single-copy gene and is highly expressed in
                      roots and petioles. Silencing the NaRALF transcript by
                      transforming N. attenuata with an inverted-repeat construct
                      generated plants (irRALF) with normal wild-type (WT)
                      above-ground parts, but with roots that grew longer and
                      produced trichoblasts that developed into abnormal root
                      hairs. Most trichoblasts produced a localized 'bulge'
                      without commencing root hair tip growth; fewer trichoblasts
                      grew, but were only $10\%$ as long as those of WT plants.
                      The root hair phenotype was associated with slowed
                      apoplastic pH oscillations, increased pH at the tips of
                      trichoblasts and decreased accumulation of reactive oxygen
                      species in the root hair initiation zone. The root hair
                      growth phenotype was partially restored when irRALF lines
                      were grown in a low-pH-buffered medium, and reproduced in WT
                      plants grown in a high-pH-buffered medium. When irRALF
                      plants were grown in pH 5.6, 6.7 and 8.1 soils together with
                      WT plants in glasshouse experiments, they were out-competed
                      by WT plants in basic, but not acidic, soils. When WT and
                      irRALF lines were planted into the basic soils of the native
                      habitat of N. attenuata in the Great Basin Desert, irRALF
                      plants had smaller leaves, shorter stalks, and produced
                      fewer flowers and seed capsules than did WT plants. We
                      conclude that NaRALF is required for regulating root hair
                      extracellular pH, the transition from root hair initiation
                      to tip growth and plant growth in basic soils.},
      keywords     = {Amino Acid Sequence / Cloning, Molecular / Gene Silencing /
                      Hydrogen-Ion Concentration / Molecular Sequence Data /
                      Phenotype / Plant Proteins: genetics / Plant Proteins:
                      metabolism / Plant Proteins: physiology / Plant Roots:
                      genetics / Plant Roots: growth $\&$ development / Plant
                      Roots: metabolism / Sequence Alignment / Soil / Tobacco:
                      genetics / Tobacco: growth $\&$ development / Tobacco:
                      metabolism / Plant Proteins (NLM Chemicals) / Soil (NLM
                      Chemicals) / J (WoSType)},
      cin          = {ICG-3},
      ddc          = {580},
      cid          = {I:(DE-Juel1)ICG-3-20090406},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Plant Sciences},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:17916115},
      UT           = {WOS:000251207400008},
      doi          = {10.1111/j.1365-313X.2007.03289.x},
      url          = {https://juser.fz-juelich.de/record/58481},
}