Polarity in Plants

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Polarity is a basic phenomenon in plants. Induction of polarity by blue light is demonstrated on cellular level in side branch formation of the alga Vaucheria (Siphonales) and in the germination of the spermatized eggs of the brown alga Pelvetia. Polarity, once established in a cell persists during the whole lifetime of a plant. Expression of polarity is illustrated in roots and in under water leaves of higher plants; in the case of the leave it is characterized by the flux of protons from under to upper side. The influence of proton flow in leave and root is molecularly visualised using computer animations.

Object Details

• Alternative title: Polarität bei Pflanzen
• Location: Hannover TIB
• Extent: 1120MB, 00:19:02:17 (unknown)
• Language: Englisch
• Notes: Audiovisuelles Material

References and Relationships

• Bibliographic citation: Polarity in Plants ; (Jan. 1999)

Classification and Topics

• Keyword: anion absorption ; membrane tension ; electrophysiology ; potassium absorption ; physiology (botany) ; side branch development ; Botanik ; root hair growth ; Vaucheria ; Pelvetia ; brown alga ; unequal division ; rhizoid growth ; polarized light ; germination ; potassium channel protein ; CO2-absorption / water plant ; proton flux / electric gradient ; Physiologie (Botanik) ; biology ; Biologie ; carrier ; blue light receptor ; botany ; polarity / plants ; plant nutrition ; apical growth

Contributors, Places and Time

• Event: Veröffentlichung
• (who): IWF (Göttingen)
• (when): 1999-01-01
• Contributor: Weisenseel, Manfred ; Herb, Stefan ; Wettstein, Christian ; Trude Hard (Redaktion) ; Elvira Poloczek, Eckhard Lorenz (Assistenz) ; Jürgen Kaeding (Mikrokinematographie) ; Horst Wittmann (Kamera) ; Jürgen Kaeding (Schnitt) ; Sybille Hornig (Schnitt) ; Abbas Yousefpour (Schnitt) ; Christine Danckwortt (Schnitt) ; Janek Czechowski (Graphik) ; Eckhard Lorenz (Graphik)

Further information

• DOI: 10.3203/IWF/C-2027eng
• Last update: 04.12.2024, 8:09 AM CET