Cross-Over Pathogenic Bacteria Detected in Infected Tomatoes (<i>Solanum lycopersicum</i> L.) and Peppers (<i>Capsicum annuum</i> L.) in Bulgaria

The ability of certain human pathogens to adapt to plants without losing their virulence toward people is a major concern today. Thus, the aim of the present work was the investigation of the presence of cross-over pathogenic bacteria in infected tomato and pepper plants. The objects of the study we...

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Main Authors: Yoana Kizheva, Georgi Georgiev, Deyan Donchev, Melani Dimitrova, Maria Pandova, Iliyana Rasheva, Petya Hristova
Format: Article
Language:English
Published: MDPI AG 2022-12-01
Series:Pathogens
Subjects:
Online Access:https://www.mdpi.com/2076-0817/11/12/1507
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author Yoana Kizheva
Georgi Georgiev
Deyan Donchev
Melani Dimitrova
Maria Pandova
Iliyana Rasheva
Petya Hristova
author_facet Yoana Kizheva
Georgi Georgiev
Deyan Donchev
Melani Dimitrova
Maria Pandova
Iliyana Rasheva
Petya Hristova
author_sort Yoana Kizheva
collection DOAJ
description The ability of certain human pathogens to adapt to plants without losing their virulence toward people is a major concern today. Thus, the aim of the present work was the investigation of the presence of cross-over pathogenic bacteria in infected tomato and pepper plants. The objects of the study were 21 samples from seven different parts of the plants and three from tomato rhizosphere. In total, 26 strains were isolated, identified by MALDI-TOF, and phenotypically characterized. The PCR amplification of the <i>rpo</i>B gene was applied as an approach for the rapid detection of cross-over pathogens in plant samples. A great bacterial diversity was revealed from tomato samples as nine species were identified <i>(Leclercia adecarboxylata</i>, <i>Pseudesherichia vulneris</i>, <i>Enterobacter cancerogenus</i>, <i>Enterobacter cloacae</i>, <i>Enterobacter bugandensis</i>, <i>Acinetobacter calcoaceticus</i>, <i>Pantoea agglomerans</i>, <i>Pantoea ananatis</i>, and <i>Pectobacterium carotovorum</i>). Polymicrobial contaminations were observed in samples T2 (tomato flower) and T10 (tomato fruit). Five species were identified from pepper samples (<i>P. agglomerans</i>, <i>L. adecarboxylata</i>, <i>Pseudomonas</i> sp., <i>Pseudomonas putida</i>, and <i>Enterococcus</i> sp.). Antibiotic resistance patterns were assigned in accordance with EFSA recommendations. All isolates showed varying resistance to the tested antibiotics. The genetic basis for the phenotypic antibiotic resistance was not revealed. No genes for the virulence factors were found among the population. To our knowledge, this is the first overall investigation of tomato and pepper cross-over pathogenic bacterial populations in Bulgaria.
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spelling doaj.art-1cbb657abfc34d1a876cc795e212d9df2023-11-24T17:13:55ZengMDPI AGPathogens2076-08172022-12-011112150710.3390/pathogens11121507Cross-Over Pathogenic Bacteria Detected in Infected Tomatoes (<i>Solanum lycopersicum</i> L.) and Peppers (<i>Capsicum annuum</i> L.) in BulgariaYoana Kizheva0Georgi Georgiev1Deyan Donchev2Melani Dimitrova3Maria Pandova4Iliyana Rasheva5Petya Hristova6Department of General and Industrial Microbiology, Faculty of Biology, Sofia University, 1504 Sofia, BulgariaDepartment of General and Industrial Microbiology, Faculty of Biology, Sofia University, 1504 Sofia, BulgariaDepartment of General and Industrial Microbiology, Faculty of Biology, Sofia University, 1504 Sofia, BulgariaDepartment of General and Industrial Microbiology, Faculty of Biology, Sofia University, 1504 Sofia, BulgariaDepartment of General and Industrial Microbiology, Faculty of Biology, Sofia University, 1504 Sofia, BulgariaDepartment of General and Industrial Microbiology, Faculty of Biology, Sofia University, 1504 Sofia, BulgariaDepartment of General and Industrial Microbiology, Faculty of Biology, Sofia University, 1504 Sofia, BulgariaThe ability of certain human pathogens to adapt to plants without losing their virulence toward people is a major concern today. Thus, the aim of the present work was the investigation of the presence of cross-over pathogenic bacteria in infected tomato and pepper plants. The objects of the study were 21 samples from seven different parts of the plants and three from tomato rhizosphere. In total, 26 strains were isolated, identified by MALDI-TOF, and phenotypically characterized. The PCR amplification of the <i>rpo</i>B gene was applied as an approach for the rapid detection of cross-over pathogens in plant samples. A great bacterial diversity was revealed from tomato samples as nine species were identified <i>(Leclercia adecarboxylata</i>, <i>Pseudesherichia vulneris</i>, <i>Enterobacter cancerogenus</i>, <i>Enterobacter cloacae</i>, <i>Enterobacter bugandensis</i>, <i>Acinetobacter calcoaceticus</i>, <i>Pantoea agglomerans</i>, <i>Pantoea ananatis</i>, and <i>Pectobacterium carotovorum</i>). Polymicrobial contaminations were observed in samples T2 (tomato flower) and T10 (tomato fruit). Five species were identified from pepper samples (<i>P. agglomerans</i>, <i>L. adecarboxylata</i>, <i>Pseudomonas</i> sp., <i>Pseudomonas putida</i>, and <i>Enterococcus</i> sp.). Antibiotic resistance patterns were assigned in accordance with EFSA recommendations. All isolates showed varying resistance to the tested antibiotics. The genetic basis for the phenotypic antibiotic resistance was not revealed. No genes for the virulence factors were found among the population. To our knowledge, this is the first overall investigation of tomato and pepper cross-over pathogenic bacterial populations in Bulgaria.https://www.mdpi.com/2076-0817/11/12/1507cross-over pathogensfoodborne infections<i>Solanum lycopersicum</i> L.<i>Capsicum annuum</i> L.antibiotic resistance
spellingShingle Yoana Kizheva
Georgi Georgiev
Deyan Donchev
Melani Dimitrova
Maria Pandova
Iliyana Rasheva
Petya Hristova
Cross-Over Pathogenic Bacteria Detected in Infected Tomatoes (<i>Solanum lycopersicum</i> L.) and Peppers (<i>Capsicum annuum</i> L.) in Bulgaria
Pathogens
cross-over pathogens
foodborne infections
<i>Solanum lycopersicum</i> L.
<i>Capsicum annuum</i> L.
antibiotic resistance
title Cross-Over Pathogenic Bacteria Detected in Infected Tomatoes (<i>Solanum lycopersicum</i> L.) and Peppers (<i>Capsicum annuum</i> L.) in Bulgaria
title_full Cross-Over Pathogenic Bacteria Detected in Infected Tomatoes (<i>Solanum lycopersicum</i> L.) and Peppers (<i>Capsicum annuum</i> L.) in Bulgaria
title_fullStr Cross-Over Pathogenic Bacteria Detected in Infected Tomatoes (<i>Solanum lycopersicum</i> L.) and Peppers (<i>Capsicum annuum</i> L.) in Bulgaria
title_full_unstemmed Cross-Over Pathogenic Bacteria Detected in Infected Tomatoes (<i>Solanum lycopersicum</i> L.) and Peppers (<i>Capsicum annuum</i> L.) in Bulgaria
title_short Cross-Over Pathogenic Bacteria Detected in Infected Tomatoes (<i>Solanum lycopersicum</i> L.) and Peppers (<i>Capsicum annuum</i> L.) in Bulgaria
title_sort cross over pathogenic bacteria detected in infected tomatoes i solanum lycopersicum i l and peppers i capsicum annuum i l in bulgaria
topic cross-over pathogens
foodborne infections
<i>Solanum lycopersicum</i> L.
<i>Capsicum annuum</i> L.
antibiotic resistance
url https://www.mdpi.com/2076-0817/11/12/1507
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