The Ca2+ pump inhibitor, thapsigargin, inhibits root gravitropism in Arabidopsis thaliana
Biol. Res
; 39(2): 289-296, 2006. ilus, tab
Article
em En
| LILACS
| ID: lil-432431
Biblioteca responsável:
BR1.1
RESUMO
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.
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Índice:
LILACS
Assunto principal:
Arabidopsis
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ATPases Transportadoras de Cálcio
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Gravitropismo
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Tapsigargina
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Inibidores Enzimáticos
Idioma:
En
Revista:
Biol. Res
Assunto da revista:
BIOLOGIA
Ano de publicação:
2006
Tipo de documento:
Article
/
Project document