Genomic Differences among Pathotypes of Bursaphelenchus xylophilus
Abstract
Total genomic DNA from Bursaphelenchus xylophilus pathotypes MPSy-1 and VPSt-1 and from B. mucronatus was digested with restriction endonucleases. DNA fragments were electrophoretically separated, Southern blotted to nitrocellulose, and hybridized to genomic DNA from one of the isolates. The resulting hybridization patterns indicate genomic differences in repetitive DNA sequences among these populations. Greatest differences were seen between B. xylophilus and B. mucronatus, but genomic differences were also apparent between B. xylophilus pathotypes MPSy-1 and VPSt-1 and between a population from P. nigra in New Jersey and a population of a mucronate form from Abies balsamea in Quebec, Canada. Key words: Abies balsamea, Bursaphelenchus mucronatus, B. xylophilus, DNA, genetics, pathotype, pinewood nematode, Pinus nigra, P. strobus, P. sylvestris, restriction endonuclease.Downloads
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