Identification & Functional Characterization of the AtZFP3: AtZFP3, Signalling & Response - Tapa blanda

Joseph, Mary Prathiba; Papdi, Csaba; Szabados, László

 
9783659759000: Identification & Functional Characterization of the AtZFP3: AtZFP3, Signalling & Response
Tapa blanda
ISBN 10: 3659759007 ISBN 13: 9783659759000
Editorial: LAP LAMBERT Academic Publishing, 2015

Sinopsis

Seed germination is controlled by environmental signals, including light and endogenous phytohormones. Abscisic acid (ABA) inhibits, whereas gibberellin (GA) promotes germination and early seedling development, respectively. Here we report that ZFP3, a nuclear C2H2 zinc finger protein acts as a negative regulator of ABA- suppressed germination. Accordingly, regulated over-expression of ZFP3 and the closely related ZFP1, ZFP4, ZFP6 and ZFP7 zinc finger factors confers ABA insensitivity to seed germination while the zfp3 zfp4 double mutant displays enhanced ABA susceptibility. Reduced expression of several ABA-induced genes, such as RAB18 and transcription factor ABI4 in ZFP3ox seedlings suggests that ZFP3 negatively regulates ABA signaling. Analysis of ZFP3ox plants revealed multiple phenotypic alterations, such as semidwarf growth habit, defects in fertility and enhanced sensitivity of hypocotyl elongation to red but not to far-red or blue light. Analysis of genetic interactions with phytochrome and abi mutants indicates that ZFP3 regulate light and ABA responses during germination and early seedling development.

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Reseña del editor

Seed germination is controlled by environmental signals, including light and endogenous phytohormones. Abscisic acid (ABA) inhibits, whereas gibberellin (GA) promotes germination and early seedling development, respectively. Here we report that ZFP3, a nuclear C2H2 zinc finger protein acts as a negative regulator of ABA- suppressed germination. Accordingly, regulated over-expression of ZFP3 and the closely related ZFP1, ZFP4, ZFP6 and ZFP7 zinc finger factors confers ABA insensitivity to seed germination while the zfp3 zfp4 double mutant displays enhanced ABA susceptibility. Reduced expression of several ABA-induced genes, such as RAB18 and transcription factor ABI4 in ZFP3ox seedlings suggests that ZFP3 negatively regulates ABA signaling. Analysis of ZFP3ox plants revealed multiple phenotypic alterations, such as semidwarf growth habit, defects in fertility and enhanced sensitivity of hypocotyl elongation to red but not to far-red or blue light. Analysis of genetic interactions with phytochrome and abi mutants indicates that ZFP3 regulate light and ABA responses during germination and early seedling development.

Biografía del autor

Mary. Prathiba Joseph, Studied MSc. Biotechnology, University of Mysore, India; PhD, Arabidopsis Molecular Genetics, Doctoral School of Biology, University of Szeged, Hungary; Junior Research Associate, Institute of Plant Biology, Biological Research Centre, Szeged, Hungary.

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Editorial
LAP LAMBERT Academic Publishing
Año de publicación
2015
Idioma
Inglés
ISBN 10 
3659759007
ISBN 13 
9783659759000
Encuadernación
Tapa blanda
Número de páginas
136
Contacto del fabricante
no disponible
Persona responsable
no disponible