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  • Lilium  (1)
  • Springer  (1)
  • Springer Nature
  • 2010-2014
  • 1975-1979  (1)
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    Electronic Resource
    Electronic Resource
    Springer
    Planta 133 (1976), S. 1-7 
    ISSN: 1432-2048
    Keywords: Pollen tubes ; Growth current ; Potassium leak ; Proton pump ; Lilium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Growing lily (Lilium longiflorum Thunb.) pollen always drive a current into their tubes and out of their grains. The only external ions needed for growth (and the growth current) are K+, H+, and Ca2+. Increases in K+ immediately stimulate the current; while decreases in K+ immediately inhibit it. Comparable changes in H+ have the opposite effect; while those in Ca2+ have very little effect. We infer that most of the steady growth current is carried in by a potassium leak and out by a proton pump; but other considerations indicate that a minor, but controlling, component of the inward current consists of calcium ions.
    Type of Medium: Electronic Resource
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