Exposure to bioaerosols during the growth season of tomatoes in an organic greenhouse using Supresivit (Trichoderma harzianum) and Mycostop (Streptomyces griseoviridis).

Applied and Environmental Microbiology
Vinni M HansenA M Madsen

Abstract

In working environments, especially in confined spaces like greenhouses, elevated concentrations of airborne microorganisms may become a problem for workers' health. Additionally, the use of microbial pest control agents (MPCAs) may increase exposure to microorganisms. The aim of this study was to investigate tomato growers' exposure to naturally occurring bioaerosol components [dust, bacteria, fungi, actinomycetes, (1-->3)-beta-D-glucans, and endotoxin] and MPCAs applied by drip irrigation. Airborne dust was collected with filter samplers and analyzed for microorganisms by plate counts and total counts using a microscope. Analysis of (1-->3)-beta-D-glucan and endotoxin content was performed by kinetic, chromatic Limulus amoebocyte lysate tests. The fungal strain (Trichoderma harzianum) from the biocontrol product Supresivit was identified by PCR analysis. Measurements were performed on the day of drip irrigation and 1 week, 1 month, and 3 months after the irrigation. T. harzianum from Supresivit could be detected only on the day of treatment. Streptomyces griseoviridis, an applied MPCA, was not detected in the air during this investigation. We found that bioaerosol exposure increases during the growth season and that exposure ...Continue Reading

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Citations

Oct 18, 2011·The Annals of Occupational Hygiene·Vinni M HansenAnne Mette Madsen
Mar 6, 2015·Journal of Occupational Medicine and Toxicology·Amare W NigatuBente E Moen
Oct 12, 2013·The Science of the Total Environment·Anne Mette MadsenMargit W Frederiksen
Oct 4, 2018·International Journal of Occupational and Environmental Health·Maggie DavidsonGary Dennis
Oct 16, 2018·Critical Reviews in Microbiology·Ekaterina Mirskaya, Igor E Agranovski
Jan 8, 2019·Journal of Applied Microbiology·A M MadsenK Tendal
Feb 22, 2017·Frontiers in Microbiology·Cibele KonstantinovasJane Lima-Santos
Oct 20, 2017·Industrial Health·Angela GioffrèSergio Iavicoli

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