Crop rotation reduces the density of volunteer plants in processing tomato fields and the inoculum of bacterial spot

Moura, Dahís Ramalho; Yamada, Jaqueline Kiyomi; Albuquerque, Leonardo Cunha de; Pontes, Nadson de Carvalho

doi:10.1007/s10658-019-01868-y

Cited by 5 publications

(5 citation statements)

References 19 publications

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“…This is important from an epidemiological point of view, since pepper is one of the most important crops in Chihuahua, México with a production of 676,463 tons a year (SIAP, 2018). The presence of X. euvesicatoria (formally X. perforans) in jalapeño pepper plants in South Central Chihuahua, might be due to importation of contaminated seeds, which is a common mechanism for spreading this pathogen (Moura et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Prevalence of Xanthomonas euvesicatoria (formally X. perforans) associated with bacterial spot severity in Capsicum annuum crops in South Central Chihuahua, Mexico

Hernández-Huerta

Tamez‐Guerra

Gómez-Flores

et al. 2021

PeerJ

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Background Xanthomonas spp. causes bacterial spot disease, which reduces quality and yield of pepper crops in Mexico. Identification of phytopathogen species is necessary to implement more effective control strategies. Objective The aim of this study was to isolate and identify infecting Xanthomonas species in South Central Chihuahua pepper-producing areas. Methods Diseased plants were collected from 30 cultivation lots and bacteria were isolated from damaged tissues. Potential causative agents were isolated, identified, and characterized by biochemical and molecular analysis. Pathogenicity tests from each isolate were then performed on 30-d-old pepper seedlings, exposing five leaves to 10 µL of 1 × 108 CFU/mL bacterial suspensions of each isolate, using sterile distilled water as a control. Disease severity was determined after 10 d by calculating leaf damage percentage. Furthermore, we evaluated the susceptibility of the highest bacterial spot severity-causing isolates (13 isolates) to copper sulphate (CuS), copper gluconate (CuG), copper oxychloride + oxytetracycline hydrochloride (Cu + Ox), gentamicin + oxytetracycline hydrochloride (Gen + Ox), and gentamicin sulphate (GenS). Copper-resistance genes (copLAB) were detected by PCR analysis among isolates. Results Thirty-seven foliage isolates were identified as Xanthomonas euvesicatoria (14%), which were associated with bacterial spot disease in jalapeño pepper. Tested Xanthomonas isolates were resistant to Cu-based compounds, but susceptible to Cu + Ox. All isolates were susceptible to Gen + Ox and GenS. CopLAB genes were detected in all but one strain. Conclusions X. euvesicatoria (formally X. perforans) may be considered as an emerging pathogen of bacterial spot pepper in Mexico. Among disease management strategies, alternatives to copper should be taken into consideration.

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Section: Discussionmentioning

confidence: 99%

Prevalence of Xanthomonas euvesicatoria (formally X. perforans) associated with bacterial spot severity in Capsicum annuum crops in South Central Chihuahua, Mexico

Hernández-Huerta

Tamez‐Guerra

Gómez-Flores

et al. 2021

PeerJ

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“…Weeds compete with crops for essential resources such as light, water, and nutrients; additionally, they can serve as alternative hosts for crop pests and pathogens (Moura et al, 2020;Christina et al, 2021). The few existing studies provide a glimpse of the benefits of cover crops in weed management, mainly in no-tillage tomato crops, but they are not sufficient to understand all the variables that may influence the success of this practice against this type of stress, so there are still challenges regarding the use of cover crops in weed control (Campiglia et al, 2015;Roberts and Mattoo, 2018;Samedani and Meighani, 2022).…”

Section: Weeds Volunteer Plants and Parasitic Plantsmentioning

confidence: 99%

“…Volunteer plants, which can sprout from fruit that remains in the soil after mechanical harvesting of tomato, represent a source of inoculum for many crop diseases, such as Xanthomonas perforans Jones; in this regard, when tomatoes grow with soybean, corn, sweet corn, and bean, the number of volunteer plants and sources of X. perforans inoculum is reduced (Moura et al, 2020).…”

Section: Weeds Volunteer Plants and Parasitic Plantsmentioning

confidence: 99%

Plant diversity as a sustainable strategy for mitigating biotic and abiotic stresses in tomato cultivation

Cruz-López,

Granados-Echegoyen,

Pérez-Pacheco

et al. 2024

Front. Sustain. Food Syst.

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Sustainable agriculture has become a global priority in response to increasing food demand and the challenges confronting agricultural production, such as biotic and abiotic stresses. In this review, we delve into the role of plant diversity in mitigating these stressors within tomato cultivation. Our investigation reveals that the most extensively studied companion species are Vicia villosa Roth, Coriandrum sativum L., and Allium cepa L., while the primary stressors under scrutiny include nutrient deficiencies, aerial pests, and soil-borne pathogenic diseases. Regarding nutrient deficiencies, the cover crop system has demonstrated its capacity to provide essential nutrients directly and indirectly to plants. In addressing aerial pests and pathogens, all cultivation systems exhibit contributions. Finally, we assert that incorporating plant diversity into agroecosystems can effectively counteract various types of stressors. These benefits align with the application of agroecological principles and the development of sustainable agroecosystems. Further assessments of the effects of additional companion plant species are imperative. This should encompass the identification of their distribution, optimal plant quantities, and cultivation systems that enhance their benefits. Ultimately, these evaluations will aid in the formulation of comprehensive guidelines to facilitate the selection and utilization of plant diversity for long-term sustainability.

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“…The control of bacterial spot has been challenging since the pathogen is transmitted by seeds, the spread is fast in favorable environments, and the inoculum remains in the eld in volunteer plants and alternative hosts [8, 30,35]. Despite the identi cation of qualitative and quantitative resistance genes, they have not yet been incorporated into commercial varieties due to factors such as the emergence of new races of the pathogen and the low correlation between seedling trials and eld resistance [1].…”

Section: Introductionmentioning

confidence: 99%

Isolation, characterization, and evaluation of putative new bacteriophages for controlling bacterial spot on tomato in Brazil

de Sousa,

Janssen,

Rosa

et al. 2023

Arch Virol

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Bacterial spot is a highly damaging tomato disease caused by several species of the genus Xanthomonas. Bacteriophages have been studied for their potential use as a biological control method for bacterial diseases. Parte superior do formulário In the present study, bacteriophages were obtained from soil and tomato leaves in commercial elds in Brazil with the aim of obtaining biological control agents against bacterial spot. Phage isolation was carried out through co-cultivation with isolates of Xanthomonas euvesicatoria pv. perforans (Xp), which was prevalent in the collected areas. In the host range evaluation, no phage was able to induce a lytic cycle in all bacterial isolates. Then, in the in vivo tests, when Xpisolates were sensitive to the used phages, we observed that the prior application of phage suspension led to a reduction in the severity of the disease. The disease control level provided by phage application was equal to or greater than that obtained by the use of copper hydroxide. Electron microscopy analysis showed that all phages had similar morphology, with head-tails structure, similar to those viruses of the order Caudovirales. The observed short, non-contractile tubular tails strongly indicated that phages belong to the family Autographiviridae. Phylogenetic analysis con rmed it, and revealed that the phages belong to the genus Pradovirus. The phages are closely related to each other and potentially belong a new species of the genus. These phages will be evaluated in future studies against other tomato Xanthomonads strains to assess their potential as biological control agents.

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Crop rotation reduces the density of volunteer plants in processing tomato fields and the inoculum of bacterial spot

Cited by 5 publications

References 19 publications

Prevalence of Xanthomonas euvesicatoria (formally X. perforans) associated with bacterial spot severity in Capsicum annuum crops in South Central Chihuahua, Mexico

Prevalence of Xanthomonas euvesicatoria (formally X. perforans) associated with bacterial spot severity in Capsicum annuum crops in South Central Chihuahua, Mexico

Plant diversity as a sustainable strategy for mitigating biotic and abiotic stresses in tomato cultivation

Isolation, characterization, and evaluation of putative new bacteriophages for controlling bacterial spot on tomato in Brazil

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