Expression of an Arabidopsis potassium channel gene in guard cells

Robert L. Nakamura, William L. McKendree, Rebecca E. Hirsch, John C. Sedbrook, Richard F. Gaber, Michael R. Sussman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

222 Scopus citations


The Arabidopsis thaliana KAT1 cDNA encodes a voltage-gated inward-rectifying K+ channel. A KAT1 genomic DNA clone was isolated and sequenced, and a 5′ promoter and coding sequences containing eight introns were identified. Reporter gene analysis of transgenic plants containing the KAT1 promoter fused to bacterial β-glucuronidase showed robust β-glucuronidase activity primarily in guard cells.

Original languageEnglish (US)
Pages (from-to)371-374
Number of pages4
JournalPlant Physiology
Issue number2
StatePublished - Oct 1995

ASJC Scopus subject areas

  • Genetics
  • Physiology
  • Plant Science


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