Erwinia isolates from the bacterial shoot blight of pear in Japan are closely related to Erwinia pyrifoliae based on phylogenetic analyses of gyrB and rpoD genes |
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| Authors: | Takayuki Matsuura Hirosuke Shinohara Yasuhiro Inoue Koji Azegami Seiya Tsushima Takanori Tsukamoto and Akifumi Mizuno |
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| Institution: | (1) National Agricultural Research Center, Tsukuba, Ibaraki 305-8666, Japan;(2) National Institute for Agro-Environmental Sciences, Tsukuba, Japan;(3) Yokohama Plant Protection Station, Yokohama, Japan;(4) Present address: National Agricultural Research Center for Tohoku Region, Fukushima, Japan |
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| Abstract: | The phylogenetic relationships among Erwinia amylovora biovar 4 (the pathogen of bacterial shoot blight of pear in Japan), other biovars of E. amylovora, and Erwinia pyrifoliae were investigated using the sequences of 16S rRNA, gyrB, and rpoD genes. The tested isolates formed two distinct monophyletic groups in the phylogenetic trees constructed based on the gyrB gene, rpoD gene, or a combination of the three genes: group 1 contained E. amylovora biovars 1, 2, and 3; group 2 contained E. amylovora bv. 4 and E. pyrifoliae. This phylogenetic analysis showed that E. amylovora bv. 4 was more closely related to E. pyrifoliae than to other biovars of E. amylovora.
The nucleotide sequence data reported are available in the DDBJ/EMBL/GenBank databases under the accession numbers AB242876
to AB242925. |
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| Keywords: | Erwinia amylovora Erwinia pyrifoliae Biovar gyrB gene rpoD gene Phylogeny |
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