Biological Control Potential of Achromobacter xylosoxydans for Suppressing Fusarium wilt of Tomato

Moretti, Marino; Gilardi, G.; Gullino, M. L.; Garibaldi, A.

doi:10.3923/ijb.2008.369.375

Cited by 50 publications

(41 citation statements)

References 29 publications

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“…It is also on economically important wilting pathogen of tomato in Iran (Amini 2009). The pathogen occurs throughout most tomato-growing worldwide causing a vascular wilt that can severely affect the crop (Moretti et al 2008), and the disease is considered as one of the main soil-borne systemic diseases (Schwarz and Grosch 2003). It causes significant losses in tomato production both in greenhouse and field -grown tomates (Nusret ozbay and Steven 2004).…”

Section: Introductionmentioning

confidence: 99%

The Effects of Fungicides on Fusarium Oxysporum F. SP. Lycopersici Associated with Fusarium Wilt of Tomato

Amini¹,

Sidovich²

2010

Journal of Plant Protection Research

123

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Tomato fusarium wilt is considered as one of the most important diseases of tomato both in field and greenhouse -grown tomatoes worldwide. In presented research, six fungicides; benomyl, carbendazim, prochloraz, fludioxonil, bromuconazole and azoxystrobin, were evaluated for their efficacy against the disease casual agent Fusarium oxysporum f. sp. lycopersici in vitro and in vivo. Seven different concentration (0.0001, 0.001, 0.01, 0.1, 1, 10, 100 µg/ml) were used for assessment of their inhibitory activities against the pathogen through mycelial growth inhibition on potato media. Four concentrations of above mentioned fungicides (0.1, 1. 10 and 100 µg/ml) were tested for controlling Fusarium wilt on tomato plants in glasshouse. Fungal radial growth was measured and median effective concentration (EC 50 ) values (µg/ml) determined. The result of glasshouse tests revealed a different degree of efficacy of all tested fungicides in reducing disease infestation. Prochloraz and bromuconazole were the most effective fungicides against the pathogen both in vitro and in vivo, followed by benomyl and carbendazim. All other fungicides were less effective. Conserning the application date of fungicides it was shown that they were less effective when applied 7 days after tomato plant infection, compared with 1 day prior infection. No phytotoxic symptoms were observed after the application of prochloraz, bromuconazol and benomyl when used at recommended doses, especially on seedlings. However both fungicides fludioxonil and bromuconazole were shown to be phototoxic to tomato seedlings.

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Section: Introductionmentioning

confidence: 99%

The Effects of Fungicides on Fusarium Oxysporum F. SP. Lycopersici Associated with Fusarium Wilt of Tomato

Amini¹,

Sidovich²

2010

Journal of Plant Protection Research

123

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“…A study by Chindo, Khan and Erinle (1991) revealed that the presence of Meloidogyne spp greatly reduced resistance of tomato cultivars to the fusarium wilt. The presence of fungal survival structures (chlamydospores) that enhance its ability to persist in the soil for a long time and its wide host range makes its management fairly challenging (Blum & Rodriques, 2004;Sudhamoy, Nitupama & Adinpunya 2009;Moretti, Gilardi, Gullino & Garibaldi 2008).…”

Section: Introductionmentioning

confidence: 99%

Integrated Management of Fusarium Wilt-Root Knot Nematode Complex on Tomato in Central Highlands of Kenya

Wanjohi¹,

Wafula²,

Macharia³

2018

SAR

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Tomato plays a critical role in meeting nutritional food requirements, generating income and creating employment for both the rural and urban populations in Kenya. However, its production is threatened by the Fusarium wilt caused by Fusarium oxysporum f.sp. lycopersici, root knot nematodes (Meloidogyne spp), Fusarium wilt-root-knot nematode complex and Tomato leaf miner (Tuta absoluta) among others. Yield losses of 80-100% in some instances, have been reported due to the Fusarium wilt -root knot nematode complex. Field experiments were set up in two sites (Kagio and Mwea) in Kirinyaga County in Central highlands of Kenya to evaluate the effectiveness of various Integrated Pest Management (IPM) packages for the management of fusarium wilt-root knot nematode disease complex in tomatoes. The trials were established in two seasons, the long rains (March -July 2016) and the short rains (September 2016-January 2017). The IPM packages tested were NatuGro system (a combination of soil improvers, plant biostimulants and Trichoderma harzianum T22), a fungicide (carbendazim), Nemix (Bacillus sp. based biocontrol agent) and bionematicide (Paecilomyces lilacinus T251) applied either singly or in combination. Root knot nematode (RKN) gall index, as a measure of nematode disease severity was assessed twice during the experimental period; at flowering and mid fruit stage, while severity of fusarium wilt was assessed using the vascular wilt rating scale of 0-5. Fusarium wilt incidence was evaluated biweekly from 2 weeks after transplanting by visual assessment of wilt symptoms and expressing them as a percentage of total number of plants per plot. Both total and marketable tomato yields were determined at the end of the experimental period (4 months after transplanting). Integrating NatuGro system, Carbendazim and P. lilacinus was most effective in reducing RKN disease severity and damage and improving tomato growth followed by NatuGro system applied singly. Fusarium wilt severity and incidence were low throughout the experimental period and in all the treatments in both experimental sites.

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“…The frequency of FORL re-isolation from roots, collars and stems was calculated using the following formula (Moretti et al, 2008):…”

Section: Assessment Of Fcrr Suppression Abilitymentioning

confidence: 99%

Investigation on biosuppression of Fusarium crown and root rot of tomato (Solanum lycopersicum L.) and growth promotion using fungi naturally associated to Solanum linnaeanum L.

Nefzi¹,

Abdallah²,

Jabnoun‐Khiareddine³

et al. 2018

Afr. J. Microbiol. Res.

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Fusarium crown and root rot (FCRR) is a serious tomato disease in Tunisia which is difficult to control due to its soilborne nature and to the luck of genetic resistance. In the current study, native Solanum linnaeanum was explored as potential source of effective fungal agents for disease biocontrol. Eight fungal isolates, recovered from S. linnaeanum plants growing in the Tunisian Centre-East and shown able to colonize roots, crowns and stems of tomato (Solanum lycopersicum L.) seedlings, were tested for their ability to inhibit Fusarium oxysporum f. sp. radicis-lycopersici (FORL), the causal agent of this disease, and to promote plant growth. Tomato seedlings inoculated or not with FORL and treated using tested fungal isolates, exhibited significant increments in their growth parameters. Tested as conidial suspensions or cell-free culture filtrates, I74 and I92 isolates were the most active leading to 92.8% decrease in FCRR severity and 89.3 to 95.2% lowered vascular browning extent as compared to FORLinoculated and untreated controls. These two isolates were microscopically and macroscopically described and identified using rDNA sequencing gene as being Penicillium crustosum I74 (MF188258) and Fusarium proliferatum I92 (MF188256). Pathogen mycelial growth was inhibited by 29.4 to 78.1% using their conidial suspensions and by 67.5 to 82% with their cell-free culture filtrates. P. crustosum I74 and F. proliferatum I92 showed chitinolytic, proteolytic and amylase activities. Only I92 isolate exhibited a lipolytic activity. Our study clearly demonstrated that I74 and I92 isolates were promising candidates for suppressing FCRR severity and promoting tomato growth. Further investigations are required for elucidating their mechanisms of action involved in disease suppression and plant growth promotion.

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Biological Control Potential of Achromobacter xylosoxydans for Suppressing Fusarium wilt of Tomato

Cited by 50 publications

References 29 publications

The Effects of Fungicides on Fusarium Oxysporum F. SP. Lycopersici Associated with Fusarium Wilt of Tomato

The Effects of Fungicides on Fusarium Oxysporum F. SP. Lycopersici Associated with Fusarium Wilt of Tomato

Integrated Management of Fusarium Wilt-Root Knot Nematode Complex on Tomato in Central Highlands of Kenya

Investigation on biosuppression of Fusarium crown and root rot of tomato (Solanum lycopersicum L.) and growth promotion using fungi naturally associated to Solanum linnaeanum L.

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