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Identification and Characterization of Plasmids from the Western Aster Yellows Mycoplasmalike Organism

Overview
Journal J Bacteriol
Specialty Microbiology
Date 1990 Mar 1
PMID 2307660
Citations 3
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Abstract

Supercoiled double-stranded DNA molecules (plasmids) were isolated from plants infected with three laboratory strains of western aster yellows mycoplasma-like organism (AY-MLO) by using cesium chloride-ethidium bromide density gradients. Southern blot analysis, using plasmids from the severe strain of AY-MLO (SAY-MLO) as the probe, identified at least four plasmids in celery, aster, and periwinkle plants and in Macrosteles severini leafhopper vectors infected with either the dwarf AY-MLO, Tulelake AY-MLO, or SAY-MLO strain. Plasmids were also detected in two California field isolates of AY-MLO but not in plants infected with the beet leafhopper-transmitted virescence agent, western X, or elm yellows MLOs. SAY-MLO plasmids were 5.2, 4.9, 3.4, and 1.7 kilobase pairs in size. Plasmids isolated from dwarf AY- and Tulelake AY-MLOs were 7.4, 5.1, 3.5, and 1.7 kilobase pairs in size. No evidence was obtained for integration of SAY-MLO plasmids into the MLO chromosome.

Citing Articles

Cloning and detection of chromosomal and extrachromosomal DNA from mycoplasmalike organisms that cause yellow dwarf disease of rice.

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PMID: 16348605 PMC: 184014. DOI: 10.1128/aem.57.12.3570-3575.1991.


Mycoplasmalike organisms (MLOs) and distinguish them from other MLOs.

Nakashima K, Kato S, Iwanami S, Murata N Appl Environ Microbiol. 1993; 59(4):1206-12.

PMID: 8489230 PMC: 202262. DOI: 10.1128/aem.59.4.1206-1212.1993.


Mycoplasma-like organisms and ophthalmic disease.

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