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Development, Vol 110, Issue 1 283-289, Copyright © 1990 by Company of Biologists

JOURNAL ARTICLES

Storage protein gene expression is localised to regions lacking mitotic activity in developing pea embryos. An analysis of seed development in Pisum sativum XIV

AJ Hauxwell, FM Corke, CL Hedley and TL Wang
John Innes Institute, John Innes Centre for Plant Science Research, Norwich, UK.

Storage protein gene expression has been studied in relation to mitotic activity to ascertain whether these processes are linked during embryo development in pea. Sections from immature pea embryos were probed by in situ hybridisation to show the pattern of vicilin storage protein gene expression. In addition, the location of mitotic cells was identified using fluorescence microscopy. Vicilin mRNA was first localised in the parenchyma cells of the upper adaxial region of the cotyledons. As the embryos increased in fresh weight, gene expression spread from this region, in a wave-like manner, down and across the cotyledons. The gene was only expressed in those regions of the embryo that lacked mitotic activity.


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© The Company of Biologists Ltd 1990