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Salerno A, D’Amico M, Bergamini C, Maggiolini FAM, Vendemia M, Prencipe A, Catacchio CR, Ventura M, Cardone MF, Marsico AD. On the Way to the Technological Development of Newly Selected Non- Saccharomyces Yeasts Selected as Innovative Biocontrol Agents in Table Grapes. Microorganisms 2024; 12:340. [PMID: 38399744 PMCID: PMC10891982 DOI: 10.3390/microorganisms12020340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 01/29/2024] [Accepted: 02/01/2024] [Indexed: 02/25/2024] Open
Abstract
Post-harvest decay of fresh table grapes causes considerable annual production losses. The main fungal agents of decay both in pre- and post-harvest are B. cinerea, Penicillium spp., Aspergillus spp., Alternaria spp., and Cladosporium spp. To date, the use of agrochemicals and SO2 are the main methods to control grape molds in pre- and postharvest, respectively. Significant improvements, however, have already been made in to apply innovative and more environmentally sustainable control strategies, such as Biological Control Agents (BCAs), which can reduce disease severity in both pre- and post-harvest. In this study, 31 new non-Saccharomyces yeast strains, isolated from berries of native Apulian table grape genotypes, were tested for their in vivo effectiveness against grey mold of table grapes, resulting in two St. bacillaris ('N22_I1' and 'S13_I3'), one S. diversa ('N22_I3'), one A. pullulans ('OLB_9.1_VL') and one H. uvarum ('OLB_9.1_BR') yeast strains that were marked as efficient and good BCAs. Their mechanisms of action were characterized through in vitro assays, and additional characteristics were evaluated to assess the economic feasibility and viability for future technological employment. Their effectiveness was tested by reducing the working concentration, their antagonistic effect on a wide range of fungal pathogens, their ability to survive in formulations with long shelf life, and their safety to human health.
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Affiliation(s)
- Antonella Salerno
- Council for Agricultural Research and Economics, Research Center Viticulture and Enology (CREA-VE), Via Casamassima 148, 70010 Turi, Italy; (A.S.); (C.B.); (F.A.M.M.)
- Department of Biosciences, Biotechnology and Environment, University of Bari “Aldo Moro”, Via Orabona 4, 70125 Bari, Italy (C.R.C.); (M.V.)
| | - Margherita D’Amico
- Council for Agricultural Research and Economics, Research Center Viticulture and Enology (CREA-VE), Via Casamassima 148, 70010 Turi, Italy; (A.S.); (C.B.); (F.A.M.M.)
| | - Carlo Bergamini
- Council for Agricultural Research and Economics, Research Center Viticulture and Enology (CREA-VE), Via Casamassima 148, 70010 Turi, Italy; (A.S.); (C.B.); (F.A.M.M.)
| | - Flavia Angela Maria Maggiolini
- Council for Agricultural Research and Economics, Research Center Viticulture and Enology (CREA-VE), Via Casamassima 148, 70010 Turi, Italy; (A.S.); (C.B.); (F.A.M.M.)
| | - Marco Vendemia
- Council for Agricultural Research and Economics, Research Center Viticulture and Enology (CREA-VE), Via Casamassima 148, 70010 Turi, Italy; (A.S.); (C.B.); (F.A.M.M.)
| | - Annalisa Prencipe
- Department of Biosciences, Biotechnology and Environment, University of Bari “Aldo Moro”, Via Orabona 4, 70125 Bari, Italy (C.R.C.); (M.V.)
| | - Claudia Rita Catacchio
- Department of Biosciences, Biotechnology and Environment, University of Bari “Aldo Moro”, Via Orabona 4, 70125 Bari, Italy (C.R.C.); (M.V.)
| | - Mario Ventura
- Department of Biosciences, Biotechnology and Environment, University of Bari “Aldo Moro”, Via Orabona 4, 70125 Bari, Italy (C.R.C.); (M.V.)
| | - Maria Francesca Cardone
- Council for Agricultural Research and Economics, Research Center Viticulture and Enology (CREA-VE), Via Casamassima 148, 70010 Turi, Italy; (A.S.); (C.B.); (F.A.M.M.)
| | - Antonio Domenico Marsico
- Council for Agricultural Research and Economics, Research Center Viticulture and Enology (CREA-VE), Via Casamassima 148, 70010 Turi, Italy; (A.S.); (C.B.); (F.A.M.M.)
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Mannaa M, Han G, Jeong T, Kang M, Lee D, Jung H, Seo YS. Taxonomy-guided selection of Paraburkholderia busanensis sp. nov.: a versatile biocontrol agent with mycophagy against Colletotrichum scovillei causing pepper anthracnose. Microbiol Spectr 2023; 11:e0242623. [PMID: 37861313 PMCID: PMC10715207 DOI: 10.1128/spectrum.02426-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 09/04/2023] [Indexed: 10/21/2023] Open
Abstract
IMPORTANCE Traditional control methods for postharvest diseases rely on fungicides, which cause human health and environmental concerns. This study introduces a taxonomy-guided strategy for selecting biocontrol agents. By focusing on Paraburkholderia group, which harbors diverse plant-beneficial strains, the inadvertent selection of harmful strains was circumvented, thereby obviating the need for laborious in vitro screening assays. A highly promising candidate, strain P39, has been identified, exhibiting remarkable biocontrol activity against Colletotrichum scovillei. Through comprehensive genomic, physiological, and biochemical analyses, P39 was characterized as a novel species within the Paraburkholderia genus and designated Paraburkholderia busanensis. Moreover, these findings deepen our understanding of bacterial-fungal interactions, as they elucidate a potential pathway for the utilization of fungal chitin, thereby enhancing our understanding of bacterial mycophagy. P. busanensis is a promising source of antifungal volatiles and putative novel secondary metabolites.
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Affiliation(s)
- Mohamed Mannaa
- Department of Microbiology, Pusan National University, Busan, South Korea
- Department of Integrated Biological Science, Pusan National University, Busan, South Korea
- Department of Plant Pathology, Faculty of Agriculture, Cairo University, Giza, Egypt
| | - Gil Han
- Department of Microbiology, Pusan National University, Busan, South Korea
- Department of Integrated Biological Science, Pusan National University, Busan, South Korea
| | - Taeho Jeong
- Department of Microbiology, Pusan National University, Busan, South Korea
- Department of Integrated Biological Science, Pusan National University, Busan, South Korea
| | - Minhee Kang
- Department of Microbiology, Pusan National University, Busan, South Korea
- Department of Integrated Biological Science, Pusan National University, Busan, South Korea
| | - Duyoung Lee
- Department of Microbiology, Pusan National University, Busan, South Korea
- Department of Integrated Biological Science, Pusan National University, Busan, South Korea
| | - Hyejung Jung
- Department of Microbiology, Pusan National University, Busan, South Korea
- Department of Integrated Biological Science, Pusan National University, Busan, South Korea
| | - Young-Su Seo
- Department of Microbiology, Pusan National University, Busan, South Korea
- Department of Integrated Biological Science, Pusan National University, Busan, South Korea
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Abdulsalam RA, Ijabadeniyi OA, Cason ED, Sabiu S. Characterization of Microbial Diversity of Two Tomato Cultivars through Targeted Next-Generation Sequencing 16S rRNA and ITS Techniques. Microorganisms 2023; 11:2337. [PMID: 37764180 PMCID: PMC10534366 DOI: 10.3390/microorganisms11092337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/14/2023] [Accepted: 09/15/2023] [Indexed: 09/29/2023] Open
Abstract
Even though the nutritional and economic values of Solanum lycopersicum (tomato) are substantially impacted by microbial spoilage, the available data on its microbial community, particularly during spoilage, are limited and have primarily been characterized using conventional culture-dependent methods. This study employed a targeted high-throughput next-generation sequencing method to longitudinally characterize the microbial diversity of two South African tomato cultivars (jam and round) at varied storage intervals (1, 6, and 12 days). Throughout the storage period, the bacterial communities of the two cultivars were more diverse than the fungal communities. The microbial diversity of both bacteria and fungi was greater and comparable between the cultivars on day 1, but becomes distinct as the storage period increases, with round tomatoes being more diverse than jam tomato, though, on day 12, jam tomato develops greater diversity than round tomato. Overall, the most abundant phyla (though Proteobacteria was most dominant) were Proteobacteria, Firmicutes, and Bacteriodota in the bacterial communities, while Ascomycota and Basidiomycota formed most fungal communities with Ascomycota being dominant. At the genus level, Pantoea and Klebsiella (bacteria), Hanseniaspora, Stemphylium, and Alternaria (fungi) were prevalent. Taken together, this study casts light on a broad microbial diversity profile thus, confirms the cultivars' diversity and abundance differences.
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Affiliation(s)
- Rukayat Abiola Abdulsalam
- Department of Biotechnology and Food Science, Durban University of Technology, Durban 4000, South Africa
| | | | - Errol D. Cason
- Department of Animal Science, University of the Free State, Bloemfontein 9300, South Africa
| | - Saheed Sabiu
- Department of Biotechnology and Food Science, Durban University of Technology, Durban 4000, South Africa
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