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Pinamonti D, Manzano M, Maifreni M, Bianco S, Domi B, Ferrin A, Anba-Mondoloni J, Dechamps J, Briandet R, Vidic J. Prevalence and Characterization of Staphylococcus aureus Isolated from Meat and Milk in Northeastern Italy. J Food Prot 2025; 88:100442. [PMID: 39725327 DOI: 10.1016/j.jfp.2024.100442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2024] [Revised: 11/28/2024] [Accepted: 12/20/2024] [Indexed: 12/28/2024]
Abstract
Staphylococcus aureus is a pathogenic microorganism often found in animal-derived foods and is known for its ability to readily develop resistance to antibiotic treatments. This study was designed to determine the prevalence of S. aureus strains in raw milk and meat in Italy and to evaluate their antibiotic resistance profiles and biofilm production. Among the meat isolates, 41.67% were resistant to ampicillin, and 25% were methicillin-resistant S. aureus (MRSA). In milk, 20% of the isolates were resistant to gentamycin, while 5.71% were MRSA. The prevalence of multidrug-resistant strains was higher in meat (16.67%) compared to milk (5.71%). The biofilm formation capability was assessed in most of the isolates (80% in milk and 100% in meat). Representative strains exhibiting different antibiotic resistance profiles were all negative for the enterotoxin genes sea, seb, sec, sed, and see, but harbored potential virulence factors such as hemolytic activity, high pigmentation, low cell envelop permeability, charged and hydrophobicity. Finally, the interaction of representative strains with human Caco-2 intestinal cell line showed that most strains had an adhesion capacity. Our findings reveal that foodborne isolates of S. aureus present a considerable threat to consumers due to their production of virulence factors, which enhance their pathogenicity and increase the likelihood of antibiotic treatment failures.
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Affiliation(s)
- Debora Pinamonti
- University of Udine, Department of Agricultural, Food, Environmental and Animal Science, 33100 Udine, Italy
| | - Marisa Manzano
- University of Udine, Department of Agricultural, Food, Environmental and Animal Science, 33100 Udine, Italy.
| | - Michela Maifreni
- University of Udine, Department of Agricultural, Food, Environmental and Animal Science, 33100 Udine, Italy
| | - Silvia Bianco
- University of Udine, Department of Agricultural, Food, Environmental and Animal Science, 33100 Udine, Italy
| | - Beki Domi
- University of Udine, Department of Agricultural, Food, Environmental and Animal Science, 33100 Udine, Italy
| | - Alessia Ferrin
- University of Udine, Department of Agricultural, Food, Environmental and Animal Science, 33100 Udine, Italy
| | - Jamila Anba-Mondoloni
- Université Paris-Saclay, Micalis Institute, INRAE, AgroParisTech, 78352 Jouy en Josas, France
| | - Julien Dechamps
- Université Paris-Saclay, Micalis Institute, INRAE, AgroParisTech, 78352 Jouy en Josas, France
| | - Roman Briandet
- Université Paris-Saclay, Micalis Institute, INRAE, AgroParisTech, 78352 Jouy en Josas, France
| | - Jasmina Vidic
- Université Paris-Saclay, Micalis Institute, INRAE, AgroParisTech, 78352 Jouy en Josas, France.
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Shaffique S, Shah AA, Peter O, Injamum-Ul-Hoque M, Elansary HO, Kang SM, Al Azzawi TNI, Yun BW, Lee IJ. The rhizobacterial Priestia megaterium strain SH-19 mitigates the hazardous effects of heat stress via an endogenous secondary metabolite elucidation network and molecular regulation signalling. BMC PLANT BIOLOGY 2024; 24:827. [PMID: 39227801 PMCID: PMC11373221 DOI: 10.1186/s12870-024-05534-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Accepted: 08/21/2024] [Indexed: 09/05/2024]
Abstract
Global warming is a leading environmental stress that reduces plant productivity worldwide. Several beneficial microorganisms reduce stress; however, the mechanism by which plant-microbe interactions occur and reduce stress remains to be fully elucidated. The aim of the present study was to elucidate the mutualistic interaction between the plant growth-promoting rhizobacterial strain SH-19 and soybeans of the Pungsannamul variety. The results showed that SH-19 possessed several plant growth-promoting traits, such as the production of indole-3-acetic acid, siderophore, and exopolysaccharide, and had the capacity for phosphate solubilisation. The heat tolerance assay showed that SH-19 could withstand temperatures up to 45 °C. The strain SH-19 was identified as P. megaterium using the 16S ribosomal DNA gene sequence technique. Inoculation of soybeans with SH-19 improved seedling characteristics under high-temperature stress. This may be due to an increase in the endogenous salicylic acid level and a decrease in the abscisic acid level compared with the negative control group. The strain of SH-19 increased the activity of the endogenous antioxidant defense system, resulting in the upregulation of GSH (44.8%), SOD (23.1%), APX (11%), and CAT (52.6%). Furthermore, this study involved the transcription factors GmHSP, GmbZIP1, and GmNCED3. The findings showed upregulation of the two transcription factors GmbZIP1 (17%), GmNCED3 (15%) involved in ABA biosynthesis and induced stomatal regulation, similarly, a downregulation of the expression pattern of GmHSP by 25% was observed. Overall, the results of this study indicate that the strain SH-19 promotes plant growth, reduces high-temperature stress, and improves physiological parameters by regulating endogenous phytohormones, the antioxidant defense system, and genetic expression. The isolated strain (SH-19) could be commercialized as a biofertilizer.
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Affiliation(s)
- Shifa Shaffique
- College of Agriculture & Life Science, School of Applied Biosciences, Kyungpook National University, 80 Daehak-Ro, Buk-Gu, Daegu, 41566, Korea
| | - Anis Ali Shah
- Department of Botany, Division of Science and Technology, University of Education, Lahore, Punjab, Pakistan.
| | - Odongkara Peter
- College of Agriculture & Life Science, School of Applied Biosciences, Kyungpook National University, 80 Daehak-Ro, Buk-Gu, Daegu, 41566, Korea
| | - Md Injamum-Ul-Hoque
- College of Agriculture & Life Science, School of Applied Biosciences, Kyungpook National University, 80 Daehak-Ro, Buk-Gu, Daegu, 41566, Korea
| | - Hosam O Elansary
- Plant Production Department, College of Food & Agriculture Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Sang-Mo Kang
- College of Agriculture & Life Science, School of Applied Biosciences, Kyungpook National University, 80 Daehak-Ro, Buk-Gu, Daegu, 41566, Korea
| | - Tiba Nazar Ibrahim Al Azzawi
- College of Agriculture & Life Science, School of Applied Biosciences, Kyungpook National University, 80 Daehak-Ro, Buk-Gu, Daegu, 41566, Korea
| | - Byung-Wook Yun
- College of Agriculture & Life Science, School of Applied Biosciences, Kyungpook National University, 80 Daehak-Ro, Buk-Gu, Daegu, 41566, Korea
| | - In-Jung Lee
- College of Agriculture & Life Science, School of Applied Biosciences, Kyungpook National University, 80 Daehak-Ro, Buk-Gu, Daegu, 41566, Korea.
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Deng J, Zhang W, Zhang L, Qin C, Wang H, Ling W. Micro-interfacial behavior of antibiotic-resistant bacteria and antibiotic resistance genes in the soil environment: A review. ENVIRONMENT INTERNATIONAL 2024; 191:108972. [PMID: 39180776 DOI: 10.1016/j.envint.2024.108972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 08/11/2024] [Accepted: 08/19/2024] [Indexed: 08/26/2024]
Abstract
Overutilization and misuse of antibiotics in recent decades markedly intensified the rapid proliferation and diffusion of antibiotic resistance genes (ARGs) within the environment, thereby elevating ARGs to the status of a global public health crisis. Recognizing that soil acts as a critical reservoir for ARGs, environmental researchers have made great progress in exploring the sources, distribution, and spread of ARGs in soil. However, the microscopic state and micro-interfacial behavior of ARGs in soil remains inadequately understood. In this study, we reviewed the micro-interfacial behaviors of antibiotic-resistant bacteria (ARB) in soil and porous media, predominantly including migration-deposition, adsorption, and biofilm formation. Meanwhile, adsorption, proliferation, and degradation were identified as the primary micro-interfacial behaviors of ARGs in the soil, with component of soil serving as significant determinant. Our work contributes to the further comprehension of the microstates and processes of ARB and ARGs in the soil environments and offers a theoretical foundation for managing and mitigating the risks associated with ARG contamination.
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Affiliation(s)
- Jibao Deng
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Wenkang Zhang
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Lingyu Zhang
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Chao Qin
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Hefei Wang
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Wanting Ling
- Institute of Organic Contaminant Control and Soil Remediation, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
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Orouji E, Fathi Ghare Baba M, Sadeghi A, Gharanjik S, Koobaz P. Specific Streptomyces strain enhances the growth, defensive mechanism, and fruit quality of cucumber by minimizing its fertilizer consumption. BMC PLANT BIOLOGY 2023; 23:246. [PMID: 37170247 PMCID: PMC10173507 DOI: 10.1186/s12870-023-04259-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 04/29/2023] [Indexed: 05/13/2023]
Abstract
BACKGROUND The required amounts of chemical fertilizers (NPK) are determined by plant yield, and product quality is given less consideration. The use of PGPRs is an environmentally friendly approach that, in addition to increasing yield, also improves fruit quality. This study examined the role of specific Streptomyces strains in aiding cucumber plants to 1) use fewer NPK fertilizers in the same quantity 2) improve the quality of cucumber fruit, and 3) promote growth and defense system. RESULTS In this study, the effect of 17 Streptomyces strains on the vegetative traits of cucumber seedlings of the Sultan cultivar was evaluated as the first test. Four strains of Streptomyces with the highest root and shoot dry weight were selected from the strains. This experiment was performed to determine the interaction effect of selected strains and different amounts of NPK on cucumber yield, quality, physiological and biochemical responses of plants. The first experiment's results revealed that strains IC6, Y7, SS12, and SS14 increased significantly in all traits compared to the control, while the other strains dramatically improved several characteristics. Analysis of variance (ANOVA) revealed significant differences between the effect of strains, NPK concentrations, and their interactions on plant traits. The treatments containing 75% NPK + SS12, yielded the most fruit (40% more than the inoculated control). Antioxidant enzymes assay showed that SS12 substantially increased the activity of POX, PPO, and the expression of the genes related to these two enzymes. Hormone assay utilizing HPLC analysis revealed that various strains employ a specific mechanism to improve the immune system of plants. CONCLUSIONS Treatment with strain SS12 led to the production of cucumbers with the highest quality by reducing the amount of nitrate, and soluble sugars and increasing the amount of antioxidants and firmness compared to other treatments. A specific Streptomyces strain could reduce 25% of NPK fertilizer during the vegetative and reproductive growth period. Moreover, this strain protected plants against possible pathogens and adverse environmental factors through the ISR and SAR systems.
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Affiliation(s)
- Elham Orouji
- Department of Plant Breeding and Biotechnology, Faculty of Agricultural Engineering, Shahrood University of Technology, Shahrood, Iran
| | - Mohammad Fathi Ghare Baba
- Department of Molecular Physiology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - Akram Sadeghi
- Department of Microbial Biotechnology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
| | - Shahrokh Gharanjik
- Department of Plant Breeding and Biotechnology, Faculty of Agricultural Engineering, Shahrood University of Technology, Shahrood, Iran
| | - Parisa Koobaz
- Department of Molecular Physiology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran.
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Shaffique S, Imran M, Kang SM, Khan MA, Asaf S, Kim WC, Lee IJ. Seed Bio-priming of wheat with a novel bacterial strain to modulate drought stress in Daegu, South Korea. FRONTIERS IN PLANT SCIENCE 2023; 14:1118941. [PMID: 37180396 PMCID: PMC10173886 DOI: 10.3389/fpls.2023.1118941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 03/09/2023] [Indexed: 05/16/2023]
Abstract
Wheat is one of the major cereal crop grown food worldwide and, therefore, plays has a key role in alleviating the global hunger crisis. The effects of drought stress can reduces crop yields by up to 50% globally. The use of drought-tolerant bacteria for biopriming can improve crop yields by countering the negative effects of drought stress on crop plants. Seed biopriming can reinforce the cellular defense responses to stresses via the stress memory mechanism, that its activates the antioxidant system and induces phytohormone production. In the present study, bacterial strains were isolated from rhizospheric soil taken from around the Artemisia plant at Pohang Beach, located near Daegu, in the South Korea Republic of Korea. Seventy-three isolates were screened for their growth-promoting attributes and biochemical characteristics. Among them, the bacterial strain SH-8 was selected preferred based on its plant growth-promoting bacterial traits, which are as follows: abscisic acid (ABA) concentration = 1.08 ± 0.05 ng/mL, phosphate-solubilizing index = 4.14 ± 0.30, and sucrose production = 0.61 ± 0.13 mg/mL. The novel strain SH-8 demonstrated high tolerance oxidative stress. The antioxidant analysis also showed that SH-8 contained significantly higher levels of catalase (CAT), superoxide dismutase (SOD), and ascorbic peroxidase (APX). The present study also quantified and determined the effects of biopriming wheat (Triticum aestivum) seeds with the novel strain SH-8. SH-8 was highly effective in enhancing the drought tolerance of bioprimed seeds; their drought tolerance and germination potential (GP) were increased by up to 20% and 60%, respectively, compared with those in the control group. The lowest level of impact caused by drought stress and the highest germination potential, seed vigor index (SVI), and germination energy (GE) (90%, 2160, and 80%, respectively), were recorded for seeds bioprimed with with SH-8. These results show that SH-8 enhances drought stress tolerance by up to 20%. Our study suggests that the novel rhizospheric bacterium SH-8 (gene accession number OM535901) is a valuable biostimulant that improves drought stress tolerance in wheat plants and has the potential to be used as a biofertilizer under drought conditions.
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Affiliation(s)
- Shifa Shaffique
- Department of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Muhammad Imran
- Biosafety Division, National Institute of Agriculture Science, Rural Development Administration, Jeonju, Republic of Korea
| | - Sang-Mo Kang
- Department of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
| | - Muhammad Aaqil Khan
- Department of Chemical and Life Sciences, Qurtuba University of Science and Information Technology, Peshawar, Pakistan
| | - Sajjad Asaf
- Natural and Medical Sciences Research Center, University of Nizwa, Nizwa, Oman
| | - Won-Chan Kim
- Department of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
- *Correspondence: Won-Chan Kim, ; In-Jung Lee,
| | - In-Jung Lee
- Department of Applied Biosciences, Kyungpook National University, Daegu, Republic of Korea
- *Correspondence: Won-Chan Kim, ; In-Jung Lee,
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