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Plant Signal Behav. 2013 Jan;8(1):e22722. doi: 10.4161/psb.22722. Epub 2012 Dec 6.

Cell wall invertase as a regulator in determining sequential development of endosperm and embryo through glucose signaling early in seed development.

Author information

  • 1School of Environmental and Life Sciences; The University of Newcastle; Callaghan, NSW Australia; Australia-China Research Centre for Crop Improvement; The University of Newcastle; Callaghan, NSW Australia.
  • 2School of Environmental and Life Sciences; The University of Newcastle; Callaghan, NSW Australia.

Abstract

Seed development depends on coordination among embryo, endosperm and seed coat. Endosperm undergoes nuclear division soon after fertilization, whereas embryo remains quiescent for a while. Such a developmental sequence is of great importance for proper seed development. However, the underlying mechanism remains unclear. Recent results on the cellular domain- and stage-specific expression of invertase genes in cotton and Arabidopsis revealed that cell wall invertase may positively and specifically regulate nuclear division of endosperm after fertilization, thereby playing a role in determining the sequential development of endosperm and embryo, probably through glucose signaling.

KEYWORDS:

cell division; embryo; endosperm; invertase; seed development; sugar metabolism; sugar signaling

PMID:
23221750
[PubMed - in process]
PMCID:
PMC3745577
Free PMC Article
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