De novo Cortical Cell Division Triggered by the Phytopathogen Rhodococcus fascians in Tobacco
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چکیده
منابع مشابه
Methylated Cytokinins from the Phytopathogen Rhodococcus fascians Mimic Plant Hormone Activity.
Cytokinins (CKs), a class of phytohormones that regulate plant growth and development, are also synthesized by some phytopathogens to disrupt the hormonal balance and to facilitate niche establishment in their hosts. Rhodococcus fascians harbors the fasciation (fas) locus, an operon encoding several genes homologous to CK biosynthesis and metabolism. This pathogen causes unique leafy gall sympt...
متن کاملBiosynthesis of auxin by the gram-positive phytopathogen Rhodococcus fascians is controlled by compounds specific to infected plant tissues.
The role and metabolism of indole-3-acetic acid in gram-negative bacteria is well documented, but little is known about indole-3-acetic acid biosynthesis and regulation in gram-positive bacteria. The phytopathogen Rhodococcus fascians, a gram-positive organism, incites diverse developmental alterations, such as leafy galls, on a wide range of plants. Phenotypic analysis of a leafy gall suggests...
متن کاملModulation of the hormone setting by Rhodococcus fascians results in ectopic KNOX activation in Arabidopsis.
The biotrophic actinomycete Rhodococcus fascians has a profound impact on plant development and a common aspect of the symptomatology is the deformation of infected leaves. In Arabidopsis (Arabidopsis thaliana), the serrated leaf margins formed upon infection resemble the leaf phenotype of transgenic plants with ectopic expression of KNOTTED-like homeobox (KNOX) genes. Through transcript profil...
متن کاملChromosomal locus that affects pathogenicity of Rhodococcus fascians.
The gram-positive plant pathogen Rhodococcus fascians provokes leafy gall formation on a wide range of plants through secretion of signal molecules that interfere with the hormone balance of the host. Crucial virulence genes are located on a linear plasmid, and their expression is tightly controlled. A mutant with a mutation in a chromosomal locus that affected virulence was isolated. The mutat...
متن کاملPurification and characterization of limonoate dehydrogenase from Rhodococcus fascians.
Limonoate dehydrogenase from Rhodococcus fascians has been purified to electrophoretic homogeneity by a procedure that consists of ion-exchange, hydrophobic, and affinity chromatography. The native enzyme has a molecular mass of around 128,000 Da and appears to be composed of four similar subunits (30,000 Da each). The isoelectric point is 4.9 as determined by isoelectric focusing. The homogene...
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ژورنال
عنوان ژورنال: Molecular Plant-Microbe Interactions®
سال: 2001
ISSN: 0894-0282,1943-7706
DOI: 10.1094/mpmi.2001.14.2.189