Genomic evidence of environmental and resident Salmonella Senftenberg and Montevideo contamination in the pistachio supply-chain

Pistachios have been implicated in two salmonellosis outbreaks and multiple recalls in the U.S. This study performed an in-depth retrospective data analysis of Salmonella associated with pistachios as well as a storage study to evaluate the survivability of Salmonella on inoculated inshell pistachio...

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Autores principales: Julie Haendiges, Gordon R. Davidson, James B. Pettengill, Elizabeth Reed, Padmini Ramachandran, Tyann Blessington, Jesse D. Miller, Nathan Anderson, Sam Myoda, Eric W. Brown, Jie Zheng, Rohan Tikekar, Maria Hoffmann
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Publicado: Public Library of Science (PLoS) 2021
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spelling oai:doaj.org-article:90a046a5d95a4062b41fef19d93488842021-11-11T07:14:41ZGenomic evidence of environmental and resident Salmonella Senftenberg and Montevideo contamination in the pistachio supply-chain1932-6203https://doaj.org/article/90a046a5d95a4062b41fef19d93488842021-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC8568146/?tool=EBIhttps://doaj.org/toc/1932-6203Pistachios have been implicated in two salmonellosis outbreaks and multiple recalls in the U.S. This study performed an in-depth retrospective data analysis of Salmonella associated with pistachios as well as a storage study to evaluate the survivability of Salmonella on inoculated inshell pistachios to further understand the genetics and microbiological dynamics of this commodity-pathogen pair. The retrospective data analysis on isolates associated with pistachios was performed utilizing short-read and long-read sequencing technologies. The sequence data were analyzed using two methods: the FDA’s Center for Food Safety and Applied Nutrition Single Nucleotide Polymorphism (SNP) analysis and Whole Genome Multilocus Sequence Typing (wgMLST). The year-long storage study evaluated the survival of five strains of Salmonella on pistachios stored at 25 °C at 35% and 54% relative humidity (RH). Our results demonstrate: i) evidence of persistent Salmonella Senftenberg and Salmonella Montevideo strains in pistachio environments, some of which may be due to clonal resident strains and some of which may be due to preharvest contamination; ii) presence of the Copper Homeostasis and Silver Resistance Island (CHASRI) in Salmonella Senftenberg and Montevideo strains in the pistachio supply chain; and iii) the use of metagenomic analysis is a novel tool for determining the composition of serovar survival in a cocktail inoculated storage study.Julie HaendigesGordon R. DavidsonJames B. PettengillElizabeth ReedPadmini RamachandranTyann BlessingtonJesse D. MillerNathan AndersonSam MyodaEric W. BrownJie ZhengRohan TikekarMaria HoffmannPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 11 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Julie Haendiges
Gordon R. Davidson
James B. Pettengill
Elizabeth Reed
Padmini Ramachandran
Tyann Blessington
Jesse D. Miller
Nathan Anderson
Sam Myoda
Eric W. Brown
Jie Zheng
Rohan Tikekar
Maria Hoffmann
Genomic evidence of environmental and resident Salmonella Senftenberg and Montevideo contamination in the pistachio supply-chain
description Pistachios have been implicated in two salmonellosis outbreaks and multiple recalls in the U.S. This study performed an in-depth retrospective data analysis of Salmonella associated with pistachios as well as a storage study to evaluate the survivability of Salmonella on inoculated inshell pistachios to further understand the genetics and microbiological dynamics of this commodity-pathogen pair. The retrospective data analysis on isolates associated with pistachios was performed utilizing short-read and long-read sequencing technologies. The sequence data were analyzed using two methods: the FDA’s Center for Food Safety and Applied Nutrition Single Nucleotide Polymorphism (SNP) analysis and Whole Genome Multilocus Sequence Typing (wgMLST). The year-long storage study evaluated the survival of five strains of Salmonella on pistachios stored at 25 °C at 35% and 54% relative humidity (RH). Our results demonstrate: i) evidence of persistent Salmonella Senftenberg and Salmonella Montevideo strains in pistachio environments, some of which may be due to clonal resident strains and some of which may be due to preharvest contamination; ii) presence of the Copper Homeostasis and Silver Resistance Island (CHASRI) in Salmonella Senftenberg and Montevideo strains in the pistachio supply chain; and iii) the use of metagenomic analysis is a novel tool for determining the composition of serovar survival in a cocktail inoculated storage study.
format article
author Julie Haendiges
Gordon R. Davidson
James B. Pettengill
Elizabeth Reed
Padmini Ramachandran
Tyann Blessington
Jesse D. Miller
Nathan Anderson
Sam Myoda
Eric W. Brown
Jie Zheng
Rohan Tikekar
Maria Hoffmann
author_facet Julie Haendiges
Gordon R. Davidson
James B. Pettengill
Elizabeth Reed
Padmini Ramachandran
Tyann Blessington
Jesse D. Miller
Nathan Anderson
Sam Myoda
Eric W. Brown
Jie Zheng
Rohan Tikekar
Maria Hoffmann
author_sort Julie Haendiges
title Genomic evidence of environmental and resident Salmonella Senftenberg and Montevideo contamination in the pistachio supply-chain
title_short Genomic evidence of environmental and resident Salmonella Senftenberg and Montevideo contamination in the pistachio supply-chain
title_full Genomic evidence of environmental and resident Salmonella Senftenberg and Montevideo contamination in the pistachio supply-chain
title_fullStr Genomic evidence of environmental and resident Salmonella Senftenberg and Montevideo contamination in the pistachio supply-chain
title_full_unstemmed Genomic evidence of environmental and resident Salmonella Senftenberg and Montevideo contamination in the pistachio supply-chain
title_sort genomic evidence of environmental and resident salmonella senftenberg and montevideo contamination in the pistachio supply-chain
publisher Public Library of Science (PLoS)
publishDate 2021
url https://doaj.org/article/90a046a5d95a4062b41fef19d9348884
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