Brassinosteroids rescue the deficiency of CYP90, a cytochrome P450, controlling cell elongation and de-etiolation in Arabidopsis.
Cell
; 85(2): 171-82, 1996 Apr 19.
Article
en En
| MEDLINE
| ID: mdl-8612270
ABSTRACT
The cpd mutation localized by T-DNA tagging on Arabidopsis chromosome 5-14.3 inhibits cell elongation controlled by the ecdysone-like brassinosteroid hormone brassinolide. The cpd mutant displays de-etiolation and derepression of light-induced genes in the dark, as well as dwarfism, male sterility, and activation of stress-regulated genes in the light. The CPD gene encodes a cytochrome P450 (CYP90) sharing homologous domains with steroid hydroxylases. The phenotype of the cpd mutant is restored to wild type both by feeding with C23-hydroxylated brassinolide precursors and by ectopic overexpression of the CPD cDNA. Brassinosteroids also compensate for different cell elongation defects of Arabidopsis det, cop, fus, and axr2 mutants, indicating that these steroids play an essential role in the regulation of plant development.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Reguladores del Crecimiento de las Plantas
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Proteínas de Plantas
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Esteroide Hidroxilasas
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Esteroides Heterocíclicos
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Colestanoles
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Arabidopsis
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Sistema Enzimático del Citocromo P-450
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Proteínas de Arabidopsis
Idioma:
En
Revista:
Cell
Año:
1996
Tipo del documento:
Article
País de afiliación:
Hungria