Ethylene and IAA interactions in the inhibition of photoperiodic flower induction of Pharbitis nil

It has been shown that both IAA and ethylene application inhibit flower induction in the short-day plant Pharbitis nil. However application of IAA has elevated ethylene production in this plant, as well. Strong enhancement of ethylene production is also correlated with the night-break effect, which...

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Bibliographic Details
Published in:Plant growth regulation 2008-05, Vol.55 (1), p.43-50
Main Authors: Kęsy, Jacek, Maciejewska, Beata, Sowa, Magdalena, Szumilak, Magdalena, Kawałowski, Krzysztof, Borzuchowska, Maja, Kopcewicz, Jan
Format: Article
Language:English
Subjects:
Agriculture
Biomedical and Life Sciences
Biosynthesis
Flowers
Life Sciences
Original Paper
Plant Anatomy/Development
Plant Physiology
Plant Sciences
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Summary:It has been shown that both IAA and ethylene application inhibit flower induction in the short-day plant Pharbitis nil. However application of IAA has elevated ethylene production in this plant, as well. Strong enhancement of ethylene production is also correlated with the night-break effect, which completely inhibits flowering. In order to determine what the role of IAA and ethylene is in the photoperiodic flower induction in Pharbitis nil, we measured changes in their levels during inductive and non-inductive photoperiods, and the effects of ethylene biosynthesis and action inhibitors on inhibition of flowering by IAA. Our results have shown that the inhibitory effect of IAA on Pharbitis nil flowering is not physiological but is connected with its effect on ethylene biosynthesis.
ISSN:0167-6903
1573-5087
DOI:10.1007/s10725-008-9256-9