Identification of Phytophthora citrophthora with cloned DNA probes

Two different DNA fragments, one of 2.9 kilobases and the other of 5.1 kilobases, were cloned from Phytophthora citrophthora and showed no homology with DNA from plants and other related fungi. These DNA probes hybridized with DNA from 12 different P. citrophthora isolates obtained from a variety of...

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Veröffentlicht in:Applied and Environmental Microbiology 1990-03, Vol.56 (3), p.669-674
Hauptverfasser: Goodwin, P.H. (University of Guelph, Guelph, Ontario, Canada), Kirkpatrick, B.C, Duniway, J.M
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container_title Applied and Environmental Microbiology
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creator Goodwin, P.H. (University of Guelph, Guelph, Ontario, Canada)
Kirkpatrick, B.C
Duniway, J.M
description Two different DNA fragments, one of 2.9 kilobases and the other of 5.1 kilobases, were cloned from Phytophthora citrophthora and showed no homology with DNA from plants and other related fungi. These DNA probes hybridized with DNA from 12 different P. citrophthora isolates obtained from a variety of hosts but did not hybridize with DNA from 6 P. citrophthora isolates obtained from cacao. Southern blot analysis revealed that the probes contained repetitive DNA, and restriction fragment length polymorphisms were identified among several P. citrophthora isolates. Of the isolates tested, two major groups were observed whose genetic similarity correlated with geographical distribution. One of the DNA probes was used to detect P. citrophthora growing from infected citrus roots incubated on semiselective medium. P. citrophthora was not detected by a hybridization assay of total DNA extracted directly from infected roots
doi_str_mv 10.1128/AEM.56.3.669-674.1990
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source American Society for Microbiology; PubMed Central; Alma/SFX Local Collection
subjects ADN
Biological and medical sciences
CITRUS
CLONE
CLONES
DNA
Fundamental and applied biological sciences. Psychology
IDENTIFICACION
IDENTIFICATION
Microbiology
Microorganism-Plant Interactions
Mycological methods and techniques used in mycology
Mycology
PHYTOPHTHORA
probes
restriction fragment length polymorphism
VARIACION GENETICA
VARIATION GENETIQUE
title Identification of Phytophthora citrophthora with cloned DNA probes
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