Spatial and temporal distribution of free and bound ABA in wheat and dandelion ovaries in the period of egg-cell activity

Spatial and temporal distribution of free and bound ABA in wheat and dandelion ovaries in the... We quantified endogenous free and bound ABA in ovaries of the apomictic Taraxacum officinale Web. (dandelion) and amphimictic Triticum aestivum L. (wheat) species. ABA distribution was assessed in four ovary sections and during three developmental stages: from the quiescence release of the egg-cell until its first division (the period of egg-cell activity). ABA content was determined by the novel modification of the ELISA technique. The ovaries of both species contained approximately similar amounts of free ABA; whereas wheat ovaries contained 1.5 to 2-fold more bound ABA. A possible involvement of the hormonal system in the control of the chronology of the basic events of plant reproduction (egg-cell activation, the onset of endosperm development, the start of embryogenesis) is discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Spatial and temporal distribution of free and bound ABA in wheat and dandelion ovaries in the period of egg-cell activity

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Publisher
Springer Journals
Copyright
Copyright © 2006 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Plant Sciences; Plant Physiology
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443706030101
Publisher site
See Article on Publisher Site

Abstract

We quantified endogenous free and bound ABA in ovaries of the apomictic Taraxacum officinale Web. (dandelion) and amphimictic Triticum aestivum L. (wheat) species. ABA distribution was assessed in four ovary sections and during three developmental stages: from the quiescence release of the egg-cell until its first division (the period of egg-cell activity). ABA content was determined by the novel modification of the ELISA technique. The ovaries of both species contained approximately similar amounts of free ABA; whereas wheat ovaries contained 1.5 to 2-fold more bound ABA. A possible involvement of the hormonal system in the control of the chronology of the basic events of plant reproduction (egg-cell activation, the onset of endosperm development, the start of embryogenesis) is discussed.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: May 15, 2006

References

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