Bio-management of Tomato wilt caused by Fusarium oxysporum f.sp lycopersici

2021 ◽  
Vol 29 (1) ◽  
pp. 67-70
Author(s):  
Harshita ◽  
J.B. Khan ◽  
U.K. Tripathi ◽  
Ved Ratan
Keyword(s):  
Fusarium Oxysporum ◽  
Tomato Wilt

scholarly journals Silver nanoparticles coated with chitosan against Fusarium oxysporum causing the tomato wilt

Biotecnia ◽  
2020 ◽  
Vol 22 (3) ◽  
pp. 73-80 ◽  
Author(s):  
David Armando Encinas Basurto ◽  
Fracisco Alvarez Carvajal ◽  
Ana Armenta Calderon ◽  
Tania Elisa Gonzalez Soto ◽  
Edgard Esquer Miranda ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Fusarium Oxysporum ◽  
Tomato Wilt

El daño por Fusarium oxysporum en las plantas de tomate es de gran importancia económica en todo el mundo debido a las importantes pérdidas que genera en el cultivo. Los avances en nanotecnología proporcionan alternativas que pueden aplicarse en el control de patógenos. Las nanopartículas de plata (AgNP) estabilizadas con quito­sano (Cs) tienen actualmente un uso generalizado para el control de patógenos de plantas. El objetivo de la presente investigación fue determinar el efecto de la aplicación de AgNP-Cs sobre la tolerancia de plántulas de tomate y control de la marchitez vascular, provocada por el fitopatógeno. Los resultados mostraron que la aplicación de las NPs no mostró efectos negativos en el desarrollo vegetativo normal de las plántulas de tomate (hasta 2000 ppm). Las nanoestructuras fueron significativamente efectivas para inhibir el crecimien­to del micelio hasta en más del 70%, además el tratamiento fue eficaz para reducir la gravedad de la enfermedad en plántulas inoculadas con Fusarium oxysporum después de 14 días post-inoculación.

Real-time PCR for differential determination of the tomato wilt fungus, Fusarium oxysporum f. sp. lycopersici, and its races

2010 ◽  
Vol 76 (2) ◽  
pp. 116-121 ◽  
Author(s):  
Keigo Inami ◽  
Chizu Yoshioka ◽  
Yasushi Hirano ◽  
Masato Kawabe ◽  
Seiya Tsushima ◽  
...  
Keyword(s):  
Fusarium Oxysporum ◽  
Real Time ◽  
Real Time Pcr ◽  
Tomato Wilt

Correlation between Soil Phospor (P) Content and Soil Yeast Antagonistics Ability Against Fusarium oxysporum Pathogen Causing Wilt

2018 ◽  
Vol 1 (02) ◽  
pp. 1-13
Author(s):  
Anton Muhibuddin ◽  
Kartika Novitasari Wibowo ◽  
Hunsa Punnapayak ◽  
Peter Goetz
Keyword(s):  
Fusarium Oxysporum ◽  
Fermentation Process ◽  
Wilt Disease ◽  
Biological Agent ◽  
Chemistry Laboratory ◽  
Soil P ◽  
Pests And Diseases ◽  
Candida Sp ◽  
P Content ◽  
Tomato Wilt

Besides its role during fermentation process, yeast also has potential as biological agent because of its antagonistics characteristic. We have isolated yeast from six different locations based on Phospourus differences. Isolated yeast were then tested its antagonistics ability of Fusarium oxysporum, the pathogen causing tomato wilt disease. This research aims to find out the diversity of yeast found in the tomato rhizosphere in six different contents of phosphorus locations and to know its antagonistics ability against the pathogenic. F. oxysporum. This research was conducted in the Laboratory of Mycology, Department of Pests and Diseases, Faculty of Agriculture, Brawijaya University, Malang and in the Chemistry Laboratory, Institut Teknologi 10 Nopember Surabaya, started from January up to September 2015. Yeasts have been isolated from tomato’s rhizosphere of 6 different locations around East Java proviences. The result showed that yeasts from organic field (Lower P content) were 6 genera. They are Candida sp. 1, Pichia sp. 1, Hansenula sp., Metschnikowia sp. 1, Cryptococcus sp., and Zygosaccharomyces sp. While the yeasts from inorganic field (higher P) were 3 genera. The most potential yeast in controlling F. oxysporum is Pichia sp. 2. Lower P content showed more divers than higher P content. Yeasts from higher soil P content showed more antagonists to control F. oxysporum. Keywords: Phosphor, correlation, yeast, antagonistic, disease, soil

scholarly journals Effector Gene Suites in Some Soil Isolates of Fusarium oxysporum Are Not Sufficient Predictors of Vascular Wilt in Tomato

2017 ◽  
Vol 107 (7) ◽  
pp. 842-851 ◽  
Author(s):  
Nicolas A. Jelinski ◽  
Karen Broz ◽  
Wilfried Jonkers ◽  
Li-Jun Ma ◽  
H. Corby Kistler
Keyword(s):  
Fusarium Oxysporum ◽  
Chromosomal Rearrangement ◽  
Vascular Wilt ◽  
Dynamic Nature ◽  
Free Living ◽  
Accurate Predictor ◽  
Effector Gene ◽  
Effector Genes ◽  
Complex Process ◽  
Tomato Wilt

Seventy-four Fusarium oxysporum soil isolates were assayed for known effector genes present in an F. oxysporum f. sp. lycopersici race 3 tomato wilt strain (FOL MN-25) obtained from the same fields in Manatee County, Florida. Based on the presence or absence of these genes, four haplotypes were defined, two of which represented 96% of the surveyed isolates. These two most common effector haplotypes contained either all or none of the assayed race 3 effector genes. We hypothesized that soil isolates with all surveyed effector genes, similar to FOL MN-25, would be pathogenic toward tomato, whereas isolates lacking all effectors would be nonpathogenic. However, inoculation experiments revealed that presence of the effector genes alone was not sufficient to ensure pathogenicity on tomato. Interestingly, a nonpathogenic isolate containing the full suite of unmutated effector genes (FOS 4-4) appears to have undergone a chromosomal rearrangement yet remains vegetatively compatible with FOL MN-25. These observations confirm the highly dynamic nature of the F. oxysporum genome and support the conclusion that pathogenesis among free-living populations of F. oxysporum is a complex process. Therefore, the presence of effector genes alone may not be an accurate predictor of pathogenicity among soil isolates of F. oxysporum.

Bio-management of tomato wilt complex caused by Meloidogyne incognita and Fusarium oxysporum f. sp. lycopersici

Nematology ◽  
2015 ◽  
Vol 17 (4) ◽  
pp. 479-485 ◽  
Author(s):  
Maria Munawar ◽  
Sajid Aleem Khan ◽  
Nazir Javed ◽  
Imran Ul Haq ◽  
Amjad Shahzad Gondal
Keyword(s):  
Fusarium Oxysporum ◽  
Meloidogyne Incognita ◽  
Field Conditions ◽  
Biocontrol Agents ◽  
Root Weight ◽  
Purpureocillium Lilacinum ◽  
Combined Application ◽  
Minimum Number ◽  
Tomato Wilt

The potential of biocontrol agentsPurpureocillium lilacinum(Paecilomyceslilacinus) andTrichodermaharzianumwas evaluated against tomato wilt complex, caused by a combination ofMeloidogyne incognitaandFusarium oxysporumf. sp.lycopersici, under both laboratory and field conditions. Biocontrol agents at spore concentration of 1 × 106spores ml−1were applied alone and in combined treatments. The results of combined application revealed maximum mortality and inhibition of hatching ofM. incognitaunderin vitroconditions. Combined application of both antagonistic fungi was found to be more effective in mycelial inhibition ofFusarium oxysporumf. sp.lycopersici. In glasshouse trials, application ofT. harzianumpromoted overall plant growth, followed by combined application ofP. lilacinumandT. harzianum; nematode development parameters and fungus damage were significantly reduced. Under field conditions, the combined application ofP. lilacinumandT. harzianumincreased the number of leaves, shoot length, shoot weight and root length, and decreased root weight, with minimum number of females and egg masses ofM. incognitaper root system and mycelia inhibition ofF. oxysporum.

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