Abscisic acid stimulates elongation of excised pea root tips

Abscisic acid stimulates elongation of excised pea root tips

Excised Pisum sativum L. root tips were incubated in a pH 5.2 sucrose medium containing abscisic acid. Elongation growth was inhibited by 100 μM abscisic acid. However, decreasing the abscisic acid concentration caused stimulation of elongation, the maximum response (25% to 30%) occurring at 1 μM ab...

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Veröffentlicht in:Plant physiology (Bethesda) 1975-05, Vol.55 (5), p.948-949
Hauptverfasser: Gaither, D.H, Lutz, D.H, Forrence, L.E
Format: Artikel
Sprache:eng
Schlagworte:
Auxins
Dose response relationship
Ethylene production
Lentils
Peas
Physiology
Plant roots
Plants
Root growth
Root tips
Short Communications
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Zusammenfassung:Excised Pisum sativum L. root tips were incubated in a pH 5.2 sucrose medium containing abscisic acid. Elongation growth was inhibited by 100 μM abscisic acid. However, decreasing the abscisic acid concentration caused stimulation of elongation, the maximum response (25% to 30%) occurring at 1 μM abscisic acid. Prior to two hours, stimulation of elongation by 1 μM abscisic acid was not detectable. Increased elongation did not occur in abscisic acid-treated root tips of Lens culinaris L., Phaseolus vulgaris L., or Zea mays L.
ISSN:0032-0889
1532-2548
DOI:10.1104/pp.55.5.948