Artículo
Arabidopsis pollen extensins LRX are required for cell wall integrity during pollen tube growth
Sede, Ana Rocío
; Borassi, Cecilia
; Wengier, Diego Leonardo
; Mecchia, Martin Alejandro
; Estevez, Jose Manuel
; Muschietti, Jorge Prometeo
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Fecha de publicación:
18/01/2018
Editorial:
Elsevier Science
Revista:
FEBS Letters
ISSN:
0014-5793
e-ISSN:
1873-3468
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Proper cell wall assembly is crucial during pollen tube growth. Leucine-rich repeat extensins (LRXs) are extracellular glycoproteins which belong to the hydroxyproline-rich glycoprotein (HRGP) family. They contain a conserved N-terminal leucine-rich repeat (LRR) domain and a highly variable C-terminal extensin domain. Here, we characterized four LRX proteins (LRX8 through LRX11) from pollen of Arabidopsis thaliana. To investigate the role of LRX8-LRX11 in pollen germination and pollen tube growth, multiple T-DNA lrx mutants were obtained. The lrx mutants display abnormal pollen tubes with an irregular deposition of callose and pectin. They also show serious alterations in pollen germination and segregation ratio. Our results suggest that LRXs are involved in ensuring proper cell wall assembly during pollen tube growth.
Palabras clave:
CALLOSE
,
CELL WALL
,
EXTENSIN
,
LRX
,
PECTIN
,
POLARIZED GROWTH
,
POLLEN TUBE
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Articulos(IIBBA)
Articulos de INST.DE INVEST.BIOQUIMICAS DE BS.AS(I)
Articulos de INST.DE INVEST.BIOQUIMICAS DE BS.AS(I)
Articulos(INGEBI)
Articulos de INST.DE INVEST.EN ING.GENETICA Y BIOL.MOLECULAR "DR. HECTOR N TORRES"
Articulos de INST.DE INVEST.EN ING.GENETICA Y BIOL.MOLECULAR "DR. HECTOR N TORRES"
Citación
Sede, Ana Rocío; Borassi, Cecilia; Wengier, Diego Leonardo; Mecchia, Martin Alejandro; Estevez, Jose Manuel; et al.; Arabidopsis pollen extensins LRX are required for cell wall integrity during pollen tube growth; Elsevier Science; FEBS Letters; 592; 2; 18-1-2018; 233-243
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