| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-02-28 |
| タイトル |
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タイトル |
Sequence type and primary structure of the vru gene upstream region of Streptococcus uberis isolated from bovine clinical mastitis in Japan |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Watanabe, Atsushi
Kawai, Kazuhiro
Hata, Eiji
Goto, Shinya
Shinozuka, Yasunori
Kurumisawa, Tomomi
Koyama, Yoshikazu
Chikayama, Yukio
Kiku, Yoshio
Nagasawa, Yuya
Hayashi, Tomohito
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| Abstract |
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内容記述タイプ |
Abstract |
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内容記述 |
In the present study, we investigated the variability of bovine clinical mastitis isolates of Streptococcus uberis in Japan by multilocus sequence typing. We also investigated the variations in the primary structure of the vru gene upstream region of the isolates to elucidate the association of this region with the occurrence of clinical mastitis. Eighty-two isolates were recovered from 62 dairy farms in Japan; these isolates were associated with 57 sequence types (STs), including 54 novel STs to which 78 isolates belonged. Thirty isolates with ST1003 (one of the novel STs) and related STs at the triple-locus variant level accounted for 37% of the isolates examined. A total 16 (20%) isolates were assigned to clonal complexes (CC143 and CC86) that are major in New Zealand and Australia. Seventy-one of the 82 isolates had 1, 3, 4 or 5 bp deletions in the vru gene upstream region in comparison with the corresponding region in the S. uberis virulent strain 0140J and the remaining 11 isolates had no deletions. These results suggest that S. uberis is a diverse mastitis-causing pathogen, and the integrity of the vru gene upstream region is not necessarily conclusive for the occurrence of bovine clinical mastitis. |
|
言語 |
en |
| bibliographic_information |
Japanese Journal of Veterinary Research
巻 69,
号 4,
p. 195-203,
発行日 2021-11
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| 出版者 |
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出版者 |
Faculty of Veterinary Medicine, Hokkaido University |
| item_10002_relation_14 |
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識別子タイプ |
DOI |
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関連識別子 |
10.14943/jjvr.69.4.195 |
| 出版タイプ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| item_1730428627434 |
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内容記述タイプ |
Other |
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内容記述 |
査読あり |
JJVR69-4_195-203_AtsushiWatanabe.pdf (750 KB)
