The inhibitory effect of copper, zinc, and manganese on Legionella longbeachae in potting mix leachate.
Lett Appl Microbiol
; 77(9)2024 Sep 02.
Article
in En
| MEDLINE
| ID: mdl-39215554
ABSTRACT
Legionella longbeachae is the leading cause of Legionnaires' disease (LD) in Australasia and has been linked to exposure to compost and potting soils. Adding antimicrobial metal ions such as copper (Cu2+), zinc (Zn2+), and manganese (Mn2+) to potting soils may reduce the load of L. longbeachae bacteria and infection risk. Baseline concentrations of metal ions in leachate from peat, bark dust, bagging base, and an all-purpose potting soil were iron 0.40-0.99 µg/ml, Cu of 0.003-0.03 µg/ml, Zn 0.01-0.06 µg/ml and Mn 0.11-0.29 µg/ml. Addition of Cu2+ ions to leachate reduced L. longbeachae viability in a concentration dependent manner. A similar effect was seen in potting soil with Zn2+ and Mn2+ but 10-fold higher concentrations were needed. These metal ions have potential to reduce the load of L. longbeachae in potting soils but toxicity in plants needs to be determined.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Soil Microbiology
/
Zinc
/
Copper
/
Legionella longbeachae
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Manganese
Language:
En
Journal:
Lett Appl Microbiol
/
Lett. appl. microbiol
/
Letters in applied microbiology
Journal subject:
MICROBIOLOGIA
Year:
2024
Document type:
Article
Affiliation country:
New Zealand
Country of publication:
United kingdom