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Article

Functional complementation of dwf4 mutants of Arabidopsis by overexpression of CYP724A1.

Journal of plant physiology - 1 Mar 2012

Zhang Rujia, Xia Xinjie, Lindsey Keith, da Rocha Pedro S C Ferreira

Abstract excerpt

An essential step in the biosynthesis of bioactive brassinosteroids (BRs) in plants is the hydroxylation at C-22, a reaction catalyzed by P450 enzymes of the CYP90B and CYP724B subfamilies. Genes for both types of enzymes are present in many species, and in rice (Oryza sativa) and tomato (Solanum lycopersicum) both CYP90B and CYP724B enzymes contribute to C-22 hydroxylation. In Arabidopsis (Arabidopsis thaliana),...

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PMID: 22196800
DOI: 10.1016/j.jplph.2011.10.013

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Functional complementation of dwf4 mutants of Arabidopsis by overexpression of CYP724A1.PMID 22196800Read ↗

The DWF4 gene of Arabidopsis encodes a cytochrome P450 that mediates multiple 22alpha-hydroxylation steps in brassinosteroid biosynthesis.Semantic proximity Read ↗

Activation of the cytochrome P450 gene, CYP72C1, reduces the levels of active brassinosteroids in vivo.Semantic proximity Read ↗

shk1-D, a dwarf Arabidopsis mutant caused by activation of the CYP72C1 gene, has altered brassinosteroid levels.Semantic proximity Read ↗

ATAF2 integrates Arabidopsis brassinosteroid inactivation and seedling photomorphogenesis.Semantic proximity Read ↗

Rice CYP734As function as multisubstrate and multifunctional enzymes in brassinosteroid catabolism.Semantic proximity Read ↗

BAS1 and SOB7 act redundantly to modulate Arabidopsis photomorphogenesis via unique brassinosteroid inactivation mechanisms.Semantic proximity Read ↗

The Arabidopsis dwarf1 mutant is defective in the conversion of 24-methylenecholesterol to campesterol in brassinosteroid biosynthesis.Semantic proximity Read ↗

Novel rice mutants overexpressing the brassinosteroid catabolic gene CYP734A4.Semantic proximity Read ↗

Arabidopsis CYP72C1 is an atypical cytochrome P450 that inactivates brassinosteroids.Semantic proximity Read ↗

The TRANSPLANTA collection of Arabidopsis lines: a resource for functional analysis of transcription factors based on their conditional overexpression.Semantic proximity Read ↗

Simultaneous suppression of three genes related to brassinosteroid (BR) biosynthesis altered campesterol and BR contents, and led to a dwarf phenotype in Arabidopsis thaliana.Semantic proximity Read ↗

The Rice brassinosteroid-deficient dwarf2 mutant, defective in the rice homolog of Arabidopsis DIMINUTO/DWARF1, is rescued by the endogenously accumulated alternative bioactive brassinosteroid, dolichosterone.Semantic proximity Read ↗

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