Bacterial Diseases

Catara, Vittoria; Bella, P.

doi:10.1007/978-3-030-22304-5_2

Cited by 6 publications

(4 citation statements)

References 93 publications

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“…Their antagonistic activity as assessed in vitro suggests the production of secondary metabolites with inhibitory activity against fungi and Gram-positive and Gram-negative plant pathogenic bacteria. Some of these harmful pathogen are seed and/or soil transmitted (Bardin and Gullino, 2020;Catara and Bella, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…michiganensis, which causes tomato bacterial canker; and (ii) one of the Xanthomonas species that causes bacterial spot of tomato, X. euvesicatoria pv. perforans (Bella et al, 2012;Aiello et al, 2013;Catara and Bella, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…At least 140 viral species have been reported, some of which have emerged in greenhouse grown tomato plants (Moriones and Verdin, 2020). Several bacterial species were described causing leaf spots, vascular diseases and roots (Catara and Bella, 2020). In addition, intensive greenhouse cropping systems have greatly facilitated the development of fungal and fungal-like diseases (Bardin and Gullino, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Bioprospecting of Beneficial Bacteria Traits Associated With Tomato Root in Greenhouse Environment Reveals That Sampling Sites Impact More Than the Root Compartment

et al. 2021

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Tomato is subject to several diseases that affect both field- and greenhouse-grown crops. To select cost-effective potential biocontrol agents, we used laboratory throughput screening to identify bacterial strains with versatile characteristics suitable for multipurpose uses. The natural diversity of tomato root–associated bacterial communities was bioprospected under a real-world environment represented by an intensive tomato cultivation area characterized by extraseasonal productions in the greenhouse. Approximately 400 tomato root–associated bacterial isolates, in majority Gram-negative bacteria, were isolated from three compartments: the soil close to the root surface (rhizosphere, R), the root surface (rhizoplane, RP), and the root interior (endorhizosphere, E). A total of 33% of the isolates produced siderophores and were able to solubilize phosphates and grow on NA with 8% NaCl. A total of 30% of the root-associated bacteria showed antagonistic activity against all the tomato pathogens tested, i.e., Clavibacter michiganesis pv. michiganensis, Pseudomonas syringae pv. tomato, Pseudomonas corrugata and Xanthomonas euvesicatoria pv. perforans, and Fusarium oxysporum f. sp. lycopersici. We found that the sampling site rather than the root compartment of isolation influenced bacterial composition in terms of analyzed phenotype. This was demonstrated through a diversity analysis including general characteristics and PGPR traits, as well as biocontrol activity in vitro. Analysis of 16S rRNA gene (rDNA) sequencing of 77 culturable endophytic bacteria that shared multiple beneficial activity revealed a predominance of bacteria in Bacillales, Enterobacteriales, and Pseudomonadales. Their in vitro antagonistic activity showed that Bacillus species were significantly more active than the isolates in the other taxonomic group. In planta activity against phytopathogenic bacteria of a subset of Bacillus and Pseudomonas isolates was also assessed.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Bioprospecting of Beneficial Bacteria Traits Associated With Tomato Root in Greenhouse Environment Reveals That Sampling Sites Impact More Than the Root Compartment

et al. 2021

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“…The data obtained here corroborate those reported by Kumar et al (2015), where studies emphasizing the significant variation in aggressiveness of different Dickeya zeae isolates in maize. This is because stalk rot caused by different pectolytic bacterial species depends on a number of factors, such as inoculum concentration, environmental temperature, the cultivar used, physiological age of the plant and the virulence of the pathogen (Catara and Bella, 2020).…”

Section: Resultsmentioning

confidence: 99%

Reaction of sweet corn genotypes to bacterial stalk rot

Gonçalves da Silva,

Castoldi,

Tebaldi

et al. 2024

Bioagro

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Bacterial stem rot, caused by Dickeya zeae, is among the main bacterial diseases of sweet corn, and finding sources of resistance is important. The objective was to evaluate the reaction of sweet corn genotypes to Dickeya zeae. The experiment was carried out at the Federal University of Uberlândia, in an 11 x 2 factorial scheme with four replications and in a randomized block design. The treatments consisted of 10 sweet corn genotypes (L2P1, L2P11, L2P33, L2P37, L2P45, L3P27, L4P19, L5P3, L5P18, L5P42), belonging to the Plant Germplasm Bank of UFU, Campus Monte Carmelo, a common commercial hybrid susceptible to Dickeya zeae (AS1633), and two D. zeae isolates (UFU J23 and UFU H113). At 45 days after planting, inoculation was performed using the syringe method. Evaluations were performed at 4, 8, 12 and 16 days after inoculation, observing the size of the lesion. In addition, the incubation period, disease severity and area under the disease progress curve were determined. Analysis of variance was performed and means were compared using the Scott-Knott test. The onset of the disease occurred between 96 and 204 hours after inoculation. The L2P33 and L2P37 genotypes showed high values of area under the disease progress curve and disease severity, regardless of the isolate. The genotypes were classified as moderately susceptible, with emphasis on the L2P11 genotype.

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