The endosphere bacteriome of diseased and healthy tomato plants

López, Silvina Marianela Yanil; Pastorino, Graciela N.; Fernández-González, Antonio J.; Franco, Mario Emilio Ernesto; Fernández‐López, Manuel; Balatti, Pedro Alberto

doi:10.1007/s00203-020-01987-9

Cited by 13 publications

(14 citation statements)

References 73 publications

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“…Some species of Pseudomonas synthesize antibacterial metabolites, such as 2,4-diacetyl phloroglucinol and hydrogen cyanide. These two compounds have been reported to be the main active compounds responsible for the biocontrol activity of Pseudomonas in different agricultural ecosystems ( López et al, 2020 ). Therefore, it is plausible to suggest that these beneficial bacteria may play a role in reducing the level of disease incidence observed in kiwifruit grown under a RS system.…”

Section: Discussionmentioning

confidence: 99%

“…Several epiphytic bacterial species isolated from the phyllosphere have been reported to be strong competitors against plant pathogens, thus acting as BCAs ( Enya et al, 2007 ; Sartori et al, 2017 ). They can secrete antimicrobial substances ( Insuk et al, 2020 ; López et al, 2020 ), compete for nutrients and space in a limited space, or interfere with the signaling systems of pathogens ( Volksch and May, 2001 ). Dong et al (2021) studied the epiphytic and endophytic fungal communities of tomato plant roots, leaves, fruits, and seeds.…”

Section: Introductionmentioning

confidence: 99%

“…Endophytic yeast fungi isolated from apple were also found to have an inhibitory effect on Monilinia fructigena , the causal agent of soft-rot in apple ( Madbouly et al, 2020 ). The endophytic bacteria present in tomato plants has been reported to play an important role in fostering plant growth and health ( López et al, 2020 ). These reports indicate that microbial community composition is linked to levels of plant disease.…”

Section: Introductionmentioning

confidence: 99%

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A Comparative Analysis of the Microbiome of Kiwifruit at Harvest Under Open-Field and Rain-Shelter Cultivation Systems

et al. 2021

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The composition of microbial communities can directly affect fruit quality, health status, and storability. The present study characterized the epiphytes and endophytes of “Hongyang” and “Cuiyu” kiwifruit at harvest under grown under open-field (OF) and rain-shelter (RS) cultivation systems. Disease incidence in kiwifruit was significantly lower (p < 0.05) under the RS system than it was under the OF system. High-throughput sequencing [16S V3-V4 ribosomal region and the fungal internal transcribed spacer (ITS2)] was conducted to compare the composition of the epiphytic and endophytic microbial community of kiwifruit under the two cultivation systems. Results indicated that the abundance of Actinobacteria, Bacteroidetes, Enterobacteriales, Acetobacterales, Sphingomonas, Pseudomonas, and Sphingobacterium was higher under the RS system, relative to the OF system, while the abundance of Capnodiales, Hypocreales, Vishniacozyma, and Plectosphaerella was also higher under the RS system. Some of these bacterial and fungal taxa have been reported to as act as biocontrol agents and reduce disease incidence. Notably, the α-diversity of the epiphytic bacterial and fungal communities on kiwifruit was higher under RS cultivation. In summary, RS cultivation reduced natural disease incidence in kiwifruit, which may be partially attributed to differences in the structure and composition of the microbial community present in and on kiwifruit.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Comparative Analysis of the Microbiome of Kiwifruit at Harvest Under Open-Field and Rain-Shelter Cultivation Systems

et al. 2021

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“…Bacteria living within seeds, roots, shoots, leaves and fruits of tomato plants of cultivar Elpida F1 (Enza Zaden) growing in farmers greenhouses, were isolated by culturing them on three different commercial culture media (TSA, Nutritive agar and King B-BritaniaLab S.A.) (López et al 2018(López et al , 2020. The microorganism's identity was preliminary determined using the 1.5 kb sequence coding for the 16S rRNA (López et al 2020). The 16S rRNA gene sequences were have deposited in the GenBank database under accession numbers MH915620-MH915655 (Table 1) and were reported in Lopez et al (2020).…”

Section: Bacterial and Fungal Materialsmentioning

confidence: 99%

“…Researchers are interested in developing the use of microorganisms or their secondary metabolites to manage plant diseases because they might not pose a threat to human health and most probably are harmless to the environment (Dukare et al 2019;Collinge et al 2019;Thomashow et al 2019;Köhl et al 2019). In previous work, while studying isolated bacteria living within plants of tomato, we isolated and identified nine bacteria living endophytically that invitro controlled plant pathogens (López et al 2020). These antagonistic bacteria synthesized secondary metabolites and while some were diffusible others were volatile compounds.…”

Section: Introductionmentioning

confidence: 99%

Volatile organic compounds profile synthesized and released by endophytes of tomato (Solanum lycopersici L.) and their antagonistic role

2021

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The endophytic microbiome uses mechanisms such as the secretion of diffusible antibiotic molecules, synthesis and release of volatile organic compounds, and/or toxins to protect plants. The aim of this research was to study the volatile organic compounds (VOCs) profile as well as the diffusible secondary metabolites produced and released by endophytic bacteria isolated from tomato plants that in in-vitro assays prevented growth of pathogenic fungi. Bacteria belonging to seven genera (Acinetobacter, Arthrobacter, Bacillus, Microbacterium, Pantoea, Pseudomonas, and Stenotrophomonas) were isolated from different tissues of tomato plants with and without symptoms of Gray leaf spot, a disease provoked by Stemphylium lycopersici. In vitro, antagonistic assays were performed and the effect of volatile and soluble compounds released by endophytic bacteria on the growth of pathogenic fungi was determined. The VOCs synthesized by the endophytes were extracted, identified and quantified. These isolates representatives of seven bacterial genera inhibited the growth of three fungal pathogens of tomato S. lycopersici, Alternaria alternata and Corynespora cassiicola, which was related to the synthesis of soluble compounds as well as VOCs. Endophytes synthesize and release different VOCs, probably due to the different type of interaction that each bacterium establishes with the fungus, presenting a range of fungal growth inhibition.

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Plant Growth Promoting Bacteria: Aspects in Metal Bioremediation and Phytopathogen Management

López

Silva

Maranhão

et al. 2022

Microbial Biocontrol: Sustainable Agriculture and Phytopathogen Management

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The endosphere bacteriome of diseased and healthy tomato plants

Cited by 13 publications

References 73 publications

A Comparative Analysis of the Microbiome of Kiwifruit at Harvest Under Open-Field and Rain-Shelter Cultivation Systems

A Comparative Analysis of the Microbiome of Kiwifruit at Harvest Under Open-Field and Rain-Shelter Cultivation Systems

Volatile organic compounds profile synthesized and released by endophytes of tomato (Solanum lycopersici L.) and their antagonistic role

Plant Growth Promoting Bacteria: Aspects in Metal Bioremediation and Phytopathogen Management

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