Potassium transport in salt-stressed barley roots

Jonathan Paul Lynch, André Läuchli

Research output: Contribution to journalArticle

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Abstract

Salinization of the medium inhibits both K+ uptake by excised barley (Hordeum vulgare L.) roots and K+ release from their stele, as measured by short-term 86Rb uptake and xylem exudation, respectively. Although inhibition was not specific to chloride, mannitol caused a different response from that of inorganic sodium salts, indicating that inhibition was at least partly the result of an ion effect. In roots previously exposed to low levels of NaCl, NaCl stress directly affected stelar K+ release, whereas in low-sodium roots stelar K+ release was much less salt-sensitive than K+ uptake.

Original languageEnglish (US)
Pages (from-to)295-301
Number of pages7
JournalPlanta
Volume161
Issue number4
DOIs
Publication statusPublished - Jun 1 1984

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All Science Journal Classification (ASJC) codes

  • Genetics
  • Plant Science

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