Analysis of chlorophyll fluorescence reveals stage specific patterns of chloroplast-containing cells during Arabidopsis embryogenesis

The basic body plan of a plant is established early in embryogenesis when cells differentiate, giving rise to the apical and basal regions of the embryo. Using chlorophyll fluorescence as a marker for chloroplasts, we have detected specific patterns of chloroplast-containing cells at specific stages...

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Autores principales:	TEJOS,RICARDO I, MERCADO,ANA V, MEISEL,LEE A
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2010
Materias:	chloroplast plastid differentiation embryogenesis
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000100012
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spelling	oai:scielo:S0716-976020100001000122010-05-07Analysis of chlorophyll fluorescence reveals stage specific patterns of chloroplast-containing cells during Arabidopsis embryogenesisTEJOS,RICARDO IMERCADO,ANA VMEISEL,LEE A chloroplast plastid differentiation embryogenesis The basic body plan of a plant is established early in embryogenesis when cells differentiate, giving rise to the apical and basal regions of the embryo. Using chlorophyll fluorescence as a marker for chloroplasts, we have detected specific patterns of chloroplast-containing cells at specific stages of embryogenesis. Non-randomly distributed chloroplast-containing cells are seen as early as the globular stage of embryogenesis in Arabidopsis. In the heart stage of embryogenesis, chloroplast containing cells are detected in epidermal cells as well as a central region of the heart stage embryo, forming a triangular septum of chloroplast-containing cells that divides the embryo into three equal sectors. Torpedo stage embryos have chloroplast-containing epidermal cells and a central band of chloroplast-containing cells in the cortex layer, just below the shoot apical meristem. In the walking-stick stage of embryogenesis, chloroplasts are present in the epidermal, cortex and endodermal cells. The chloroplasts appear reduced or absent from the provascular and columella cells of walking-stick stage embryos. These results suggest that there is a tight regulation of plastid differentiation during embryogenesis that generates specific patterns of chloroplast-containing cells in specific cell layers at specific stages of embryogenesis.info:eu-repo/semantics/openAccessSociedad de Biología de ChileBiological Research v.43 n.1 20102010-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000100012en10.4067/S0716-97602010000100012
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	chloroplast plastid differentiation embryogenesis
spellingShingle	chloroplast plastid differentiation embryogenesis TEJOS,RICARDO I MERCADO,ANA V MEISEL,LEE A Analysis of chlorophyll fluorescence reveals stage specific patterns of chloroplast-containing cells during Arabidopsis embryogenesis
description	The basic body plan of a plant is established early in embryogenesis when cells differentiate, giving rise to the apical and basal regions of the embryo. Using chlorophyll fluorescence as a marker for chloroplasts, we have detected specific patterns of chloroplast-containing cells at specific stages of embryogenesis. Non-randomly distributed chloroplast-containing cells are seen as early as the globular stage of embryogenesis in Arabidopsis. In the heart stage of embryogenesis, chloroplast containing cells are detected in epidermal cells as well as a central region of the heart stage embryo, forming a triangular septum of chloroplast-containing cells that divides the embryo into three equal sectors. Torpedo stage embryos have chloroplast-containing epidermal cells and a central band of chloroplast-containing cells in the cortex layer, just below the shoot apical meristem. In the walking-stick stage of embryogenesis, chloroplasts are present in the epidermal, cortex and endodermal cells. The chloroplasts appear reduced or absent from the provascular and columella cells of walking-stick stage embryos. These results suggest that there is a tight regulation of plastid differentiation during embryogenesis that generates specific patterns of chloroplast-containing cells in specific cell layers at specific stages of embryogenesis.
author	TEJOS,RICARDO I MERCADO,ANA V MEISEL,LEE A
author_facet	TEJOS,RICARDO I MERCADO,ANA V MEISEL,LEE A
author_sort	TEJOS,RICARDO I
title	Analysis of chlorophyll fluorescence reveals stage specific patterns of chloroplast-containing cells during Arabidopsis embryogenesis
title_short	Analysis of chlorophyll fluorescence reveals stage specific patterns of chloroplast-containing cells during Arabidopsis embryogenesis
title_full	Analysis of chlorophyll fluorescence reveals stage specific patterns of chloroplast-containing cells during Arabidopsis embryogenesis
title_fullStr	Analysis of chlorophyll fluorescence reveals stage specific patterns of chloroplast-containing cells during Arabidopsis embryogenesis
title_full_unstemmed	Analysis of chlorophyll fluorescence reveals stage specific patterns of chloroplast-containing cells during Arabidopsis embryogenesis
title_sort	analysis of chlorophyll fluorescence reveals stage specific patterns of chloroplast-containing cells during arabidopsis embryogenesis
publisher	Sociedad de Biología de Chile
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000100012
work_keys_str_mv	AT tejosricardoi analysisofchlorophyllfluorescencerevealsstagespecificpatternsofchloroplastcontainingcellsduringarabidopsisembryogenesis AT mercadoanav analysisofchlorophyllfluorescencerevealsstagespecificpatternsofchloroplastcontainingcellsduringarabidopsisembryogenesis AT meiselleea analysisofchlorophyllfluorescencerevealsstagespecificpatternsofchloroplastcontainingcellsduringarabidopsisembryogenesis
_version_	1718441457068539904

Analysis of chlorophyll fluorescence reveals stage specific patterns of chloroplast-containing cells during Arabidopsis embryogenesis

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