In Vitro Biocontrol of Tomato Fusarium Wilt Using Some Soil Bacteria

Djordjevic, Mladen; Damnjanović, Jelena; Ugrinović, Milan; Zecevic, B.; Djordjevic, R.

doi:10.17660/actahortic.2011.914.56

Cited by 2 publications

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“…Having in mind this fact on one hand and the need for environmental friendly and ecologically sustainable tomato production on the other it is necessary to find and develop as many strategies as possible in order to control fusarium wilt of tomato which will meet these requirements. The implementation of the genes -carriers of resistance (I gen) is one of the strategies that could prevent or at least reduce the risks of yield losses in production of such important culture (DJORDJEVIC et al, 2011). In order to create hybrids or varieties that are carriers of resistance gene it is necessary to test reaction of existing material to race 1 and establish the potential of existing genotypes that can be used in controlling this pathogen.…”

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confidence: 99%

Reaction of different tomato cultivars toward race 1 of Fusarium oxysporum f. sp. lycopersici

et al. 2012

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The aim of this study was to examine the reaction of different tomato cultivars towards race 1 of Fusarium oxysporum f. sp. lycopersici. The researched tomato cultivars were: Adonis, Gružanski zlatni, Jasmin crveni, Narvik SPF and SP109, breeding lines Hom-3, Hom-4, L-4, S-49, S-31, S- 35, SPA, SPR,V-100, 34/56, 93/10 and 93/16. Reaction to pathogen were tested in F1 generation, as well, in combination of 93/16 x V-100, S-35 x L- 4, S-49 x SPA, 34/56 x SPR, S-49 x Hom-4, 93/16 x Hom-3 and 93/10 x S- 31. Plants were inoculated by submerging wounded roots in to pathogen suspension. Disease was assessed 30 days after inoculation. After evaluation 15 cultivars expressed resistance toward this pathogen. Among them 93/10 x S-31, Hom-3 and 93/10 had average disease rating 1,0. Other genotypes had average disease ratings as follows: Narvik SPF and S-49 (1,1), 34/56, Hom-4 and S-49 x Hom-4 (1,2), while Adonis, 93/16 x Hom-3, 34/56 x SPR and 93/16 x V-100 had average disease rating 1,3. Cultivars SPR and 93/16 had 1,7 ADR, meanwhile Sp-109 had 1,8 average rating. Genotypes SPA (2,1), S-49 x SPA (2,1), V-100 (2,2) and L-4 (2,6) belong to the group of tolerant genotypes who did not expressed typical symptoms of chlorosis and wilt of plant but expressed some level of necrosis of xylem in lower part of plants. Most sensitive to fusarium wilt were S-35 x L-4 (3,3), S-35 (3,5), S-31 (3,6), Gružanski zlatni (3,8) and Jasmin Crveni with average disease rating of 4,0

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confidence: 99%

Reaction of different tomato cultivars toward race 1 of Fusarium oxysporum f. sp. lycopersici

et al. 2012

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“…The lowest percentage of inhibition value (65.0%) was found in GR9 (Pseudomonas sp.). Isolate GR4 that showed the highest value of percentage of inhibition in this research was the most effective in the growth inhibition of mycelium F. oxysporum (Djordjevic et al 2011).…”

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confidence: 65%

“…In addition, radial growth of mycelium had very strong negative correlation with percentage of inhibition (P = 0.0001, r = -1). This is shows that as radial growth of mycelium get increase; percentage of inhibition would be decreased (Djordjevic et al 2011). The strongest antagonism was exhibited by the isolate GR4 (Bacillus sp.)…”

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confidence: 91%

Biocontrol effects of endophytic and rhizospheric bacteria against the root pathogen Fusarium oxysporum of hot pepper (Capsicum annum L.)

Fentahun,

Kibret,

Stotaw

et al. 2022

VegSci

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Plant disease needs to be controlled to keep the quality of products and the abundance of food produced by farmers all over the world. Hot pepper production in Ethiopia has been reduced from time to time. This is mainly due to the outbreak of different diseases especially fusarium wilt in the hot pepper growing areas. The objective of this study was to isolate and characterize Plant Growth Promoting Bacteria from the hot pepper rhizosphere and internal tissues with potential biocontrol activity against Fusarium oxysporum. Thirty healthy and vigorous hot pepper plants with intact roots and soil from the rhizospheric region were collected randomly from hot pepper growing areas of Yimali Kebele. A total of 23 endophytic and rhizospheric bacteria were isolated from the hot pepper root and rhizospheric soil. The combined endophytic and rhizospheric bacteria showed a significant effect on the growth of F. oxysporum than single isolates (P d”0.05). The bacteria isolated from Markofana hot pepper varieties of black clay soil showed a better antagonistic effect on F. oxysporum than bacteria isolated from local hot pepper varieties of reddish sandy soil. A significant percentage of inhibition between combined endophytic and rhizospheric bacteria [endophytic (GE) + rhizospheric (GR) isolates] compared to GE+GE and GR+GR (P =0.002) was obtained. Antagonistic bacterial isolates were able to produce different hydrolytic enzymes such as chitinase, protease, and cellulase. Bacillus species showed better antagonistic performance and decreased radial growth of F. oxysporum than Pseudomonas species.

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In Vitro Biocontrol of Tomato Fusarium Wilt Using Some Soil Bacteria

Cited by 2 publications

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Reaction of different tomato cultivars toward race 1 of Fusarium oxysporum f. sp. lycopersici

Reaction of different tomato cultivars toward race 1 of Fusarium oxysporum f. sp. lycopersici

Biocontrol effects of endophytic and rhizospheric bacteria against the root pathogen Fusarium oxysporum of hot pepper (Capsicum annum L.)

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