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  • 标题:Pine Species Provide a Niche for Legionella Longbeachae
  • 本地全文:下载
  • 作者:Stephen T. Chambers ; Sandy Slow ; Alice Withers
  • 期刊名称:Journal of Applied & Environmental Microbiology
  • 印刷版ISSN:2373-6747
  • 电子版ISSN:2373-6712
  • 出版年度:2020
  • 卷号:8
  • 期号:2
  • 页码:46-52
  • DOI:10.12691/jaem-8-2-2
  • 出版社:Science and Education Publishing
  • 摘要:Legionella longbeachae is the commonest cause of Legionnaires’ disease (LD) nationwide in New Zealand (NZ). Most cases occur in spring and summer (October - January) and are associated with the use of commercial potting mix, which usually contains pine bark. L. longbeachae is an environmental organism but its niche has not yet been defined. Bark samples were taken at chest height from trees in three stands of Pinus radiata (Monterey pine) located in the central South Island of NZ. L. longbeachae DNA was detected by qPCR in 28/400 (7%) samples and from 22/50 (44%) different trees. There was a significant difference in the proportion of positive tests by season: summer 0/50 (0%); autumn 0/50 (0%); winter1/50 (2%); spring 22/50 (44%); (p-P. radiata pine species and adjacent mixed species were then tested. More samples from pine species 22/28 (79%) than non-pine species 6/37 (16%) tested positive for L. longbeachae (p L. longbeachae. To our knowledge this is the second human pathogen to have an arboreal niche. The use of bark from P. radiata in commercial potting mix may contribute to the incidence of LD in New Zealand.
  • 关键词:legionella longbeachae; pine trees; season; reservoir
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