Efficacy of bacterial antagonists and different commercial products against Fusarium wilt on rocket

Srinivasan, Kannupal; Gilardi, G.; Garibaldi, A.; Gullino, M. L.

doi:10.1007/s12600-009-0024-9

Cited by 12 publications

(3 citation statements)

References 29 publications

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“…W 12 (Wu et al 2015). Research has confirmed that F. oxysporum is the pathogenic pathogens of R. glutinosa disease (Li et al 2013) and that most strains of Pseudomonas showed antagonistic activity against F. oxysporum (Borah et al 2015;Chin-A-Woeng et al 2000;Srinivasan et al 2009). In this work, we found that some congeneric species showed a close interaction with allelochemicals.…”

Section: Discussionsupporting

confidence: 53%

Assaying the potential autotoxins and microbial community associated with Rehmannia glutinosa replant problems based on its ‘autotoxic circle’

Bao

Wang

et al. 2016

Plant Soil

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Aims This study attempted to elucidate the underlying correlations among replant problems of Rehmannia glutinosa, the autotoxins and microbes within its rootzone soil. Methods Different root-zone soils of R. glutinosa were collected to identify the potential autotoxins, to quantify the phenolic acids' concentration and to analyse the microbial community composition. Bioassay was conducted to assess the autotoxic potential of these samples and candidate autotoxins. Results R. glutinosa autotoxicity was presented within a 20 cm radius of the plant. Concentrations of the phenolic acids were significantly higher within this range. Twenty compounds and 17 microbes emerged in this range after the R. glutinosa cultivation. Further seedling test showed that four selected compounds possessed conspicuous autotoxic activity and a synergistic effect was observed. Moreover, one potential beneficial fungi (99 % similar with Arthrobotrys oligospora) and one potential pathogens (100 % similar with Acremonium sclerotigenum) were identified. Conclusions Our work defined the 'autotoxic circle' of R. glutinosa and identified the corresponding autotoxins and microbes. We suggest that R. glutinosa has various autotoxins and that these autotoxins and specific microbes deserve further investigation to unravel their interaction with R. glutinosa in replant problems' occurrence.

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Section: Discussionsupporting

confidence: 53%

Assaying the potential autotoxins and microbial community associated with Rehmannia glutinosa replant problems based on its ‘autotoxic circle’

Bao

Wang

et al. 2016

Plant Soil

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“…Some of these "Calcite Dissolving Bacteria" are Serratia marcescens, Sphingomonas changbaiensis, or Novosphingobium panipatense (Peper et al, 2022). Furthermore, the soil microbiome can become dominated by microbial assemblages that suppress the growth of AFL-producing fungi with increasing Ca2+ (Zhang et al, 2021), FUM-producing fungi (Srinivasan et al, 2009), and suppression of mycotoxin-producing fungi strains by non-toxin-producing fungi (Mehl et al, 2012;Ehrlich, 2014). The presence of both growth-suppressive bacteria and fungi that dissolve calcium carbonate would potentially lead to positive feedback in a calcium carbonate-rich soil.…”

Section: Discussionmentioning

confidence: 99%

Dynamic geospatial modeling of mycotoxin contamination of corn in Illinois: unveiling critical factors and predictive insights with machine learning

Castano-Duque,

Winzeler,

Blackstock

et al. 2023

Front. Microbiol.

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Mycotoxin contamination of corn is a pervasive problem that negatively impacts human and animal health and causes economic losses to the agricultural industry worldwide. Historical aflatoxin (AFL) and fumonisin (FUM) mycotoxin contamination data of corn, daily weather data, satellite data, dynamic geospatial soil properties, and land usage parameters were modeled to identify factors significantly contributing to the outbreaks of mycotoxin contamination of corn grown in Illinois (IL), AFL >20 ppb, and FUM >5 ppm. Two methods were used: a gradient boosting machine (GBM) and a neural network (NN). Both the GBM and NN models were dynamic at a state-county geospatial level because they used GPS coordinates of the counties linked to soil properties. GBM identified temperature and precipitation prior to sowing as significant influential factors contributing to high AFL and FUM contamination. AFL-GBM showed that a higher aflatoxin risk index (ARI) in January, March, July, and November led to higher AFL contamination in the southern regions of IL. Higher values of corn-specific normalized difference vegetation index (NDVI) in July led to lower AFL contamination in Central and Southern IL, while higher wheat-specific NDVI values in February led to higher AFL. FUM-GBM showed that temperature in July and October, precipitation in February, and NDVI values in March are positively correlated with high contamination throughout IL. Furthermore, the dynamic geospatial models showed that soil characteristics were correlated with AFL and FUM contamination. Greater calcium carbonate content in soil was negatively correlated with AFL contamination, which was noticeable in Southern IL. Greater soil moisture and available water-holding capacity throughout Southern IL were positively correlated with high FUM contamination. The higher clay percentage in the northeastern areas of IL negatively correlated with FUM contamination. NN models showed high class-specific performance for 1-year predictive validation for AFL (73%) and FUM (85%), highlighting their accuracy for annual mycotoxin prediction. Our models revealed that soil, NDVI, year-specific weekly average precipitation, and temperature were the most important factors that correlated with mycotoxin contamination. These findings serve as reliable guidelines for future modeling efforts to identify novel data inputs for the prediction of AFL and FUM outbreaks and potential farm-level management practices.

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“…Soil has untapped and several potential biocontrol agents that have shown high antagonistic activity against several soil-borne pathogens [34].The soil-inhabiting antagonists were found to be effective suppressant to Fusarium wilt of tomato and these include; nonpathogenic F. oxysporum [35], Trichoderma, Rhizoctonia, and Gliocladium [36], Bacillus species and Streptomyces species [37], Pseudomonas spp. [38]. Biological mechanisms through which the disease-suppressive soils control the disease development are illustrated in Fig.…”

Section: Use Of Suppressive Soilsmentioning

confidence: 99%

Management of Fusarium Wilt of Tomato (Fusarium oxysporum f. sp. lycopersici) and Related Soil-borne Diseases using Eco-friendly Methods: A Review

Haruna S. G.,

Yahuza L.,

Tijjani I.

2024

AJRCS

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Tomato is rich in vitamins, minerals and contains anti-oxidant compounds, like vitamin C and lycopene that has significant role in human health as it has anti-cancer properties. Tomato production is significantly affected by several factors amongst which Fusarium Wilt is one of the major and widespread fungal soil borne diseases in Nigeria. Difficulty in controlling this disease is attributable to long survivability of the pathogen and its existence in diverse pathogenic races. Conventional strategies, such as the use of resistant cultivars and synthetic fungicides, are not completely effective in managing tomato wilt caused by Fusarium oxysporum f. sp. lycopersici and because of unintended effects of chemicals on the environments its application is highly cautioned. This paper has examined many non-pesticide approaches such as application of bio-control agents, use of suppressive soils, composts/vermicomposts and their extracts, animal manure and urine, soil solarization, botanical extracts, good agricultural practices and integrated disease management strategy to control Fusarium wilt and other related soil borne diseases. It is worth noting that no single method can effectively control such diseases. In order to achieve a sustainable and eco-friendly disease management strategy the use of integrated approach is highly recommended. This review will provide farmers with diverse methods to be integrated as management package for Fusarium wilt and related diseases.

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Efficacy of bacterial antagonists and different commercial products against Fusarium wilt on rocket

Abstract: Seven experimental trials were carried out to evaluate the efficacy of the bacterial strains Achromobacter xylosoxydans AM1 and Serratia sp.

Cited by 12 publications

References 29 publications

Assaying the potential autotoxins and microbial community associated with Rehmannia glutinosa replant problems based on its ‘autotoxic circle’

Assaying the potential autotoxins and microbial community associated with Rehmannia glutinosa replant problems based on its ‘autotoxic circle’

Dynamic geospatial modeling of mycotoxin contamination of corn in Illinois: unveiling critical factors and predictive insights with machine learning

Management of Fusarium Wilt of Tomato (Fusarium oxysporum f. sp. lycopersici) and Related Soil-borne Diseases using Eco-friendly Methods: A Review

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