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	Provedor de dados Biol. Res. (2) Autor MEISEL,LEE A (2) MERCADO,ANA V (1) SILVA,HERMAN (1) TEJOS,RICARDO I (1) URBINA,DANIELA C (1) Palavra-chave Arabidopsis thaliana (1) Ca2+-ATPases (1) Calcium (1) Chloroplast (1) Embryogenesis (1) Gravitropism (1) Plastid differentiation (1) Root (1) Thapsigargin (1) Mais... Tipo do documento Journal article (2) Ano 2010 (1) 2006 (1) País Chile (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Analysis of chlorophyll fluorescence reveals stage specific patterns of chloroplast-containing cells during Arabidopsis embryogenesis Biol. Res. TEJOS,RICARDO I; MERCADO,ANA V; MEISEL,LEE A. 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... Tipo: Journal article Palavras-chave: Chloroplast; Plastid differentiation; Embryogenesis. Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602010000100012 The Ca2+ pump inhibitor, thapsigargin, inhibits root gravitropism in Arabidopsis thaliana Biol. Res. URBINA,DANIELA C; SILVA,HERMAN; MEISEL,LEE A. Thapsigargin, a specific inhibitor of most animal intracellular SERCA-type Ca2+ pumps present in the sarcoplasmic/endoplasmic reticulum, was originally isolated from the roots of the Mediterranean plant Thapsia gargancia L. Here, we demonstrate that this root-derived compound is capable of altering root gravitropism in Arabidopsis thaliana. Thapsigargin concentrations as low as 0.1 µM alter root gravitropism whereas under similar conditions cyclopiazonic acid does not. Furthermore, a fluorescently conjugated thapsigargin (BODIPY FL thapsigargin) suggests that target sites for thapsigargin are located in intracellular organelles in the root distal elongation zone and the root cap, regions known to regulate root gravitropism Tipo: Journal article Palavras-chave: Arabidopsis thaliana; Ca2+-ATPases; Calcium; Gravitropism; Thapsigargin; Root. Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602006000200011 Registros recuperados: 2 Primeira ... 1 ... Última

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