Characterization of <i>Fusarium oxysporum</i> Isolates Obtained from Cucumber in China by Pathogenicity, VCG, and RAPD

Vakalounakis, D. J.; Wang, Z.; Fragkiadakis, Georgios A.; Skaracis, George N.; Li, D.-B.

doi:10.1094/pdis.2004.88.6.645

Cited by 64 publications

(47 citation statements)

References 17 publications

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“…apii isolates was found to be correlated with VCG. Vakalounakis et al (2004) and Ahn et al (1998) also found out that the virulence of F. oxysporum f.sp. cucumerinum in China and Korea was associated with VCG.…”

Section: Pathogenicity and Aggressiveness Of F Oxysporum Isolates Onmentioning

confidence: 90%

Pathogenicity and aggressiveness of Fusarium oxysporum Schl. in bottle gourd and bitter gourd

Cumagun¹,

Aguirre²,

Relevante³

et al. 2010

Plant Prot. Sci.

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Cumagun C.J.R., Aguirre J.A., Relevante C.A., Balatero C.H. (2010): Pathogenicity and aggressiveness of Fusarium oxysporum Schl. in bottle gourd and bitter gourd. Plant Protect. Sci., 46: 51-58.Fusarium oxysporum is responsible for a large range of diseases on economically important crops such as bitter gourd and bottle gourd. Pathogenicity and aggressiveness of F. oxysporum in bitter gourd and bottle gourd isolated from two breeding stations of East-West Company in the Philippines namely San Ildefonso, Bulacan and Lipa, Batangas were tested. Eleven F. oxysporum isolates from bitter gourd and 12 isolates from bottle gourd were inoculated on 7-day and 1-month-old bitter gourd and bottle gourd plants in the greenhouse. All F. oxysporum isolates from bitter gourd were pathogenic on 7-day-old and 1-month-old bitter gourd and nine out of 12 isolates from bottle gourd were pathogenic on bottle gourd. Three isolates from the infested soil were non-pathogenic on bottle gourd. There was a significant difference in aggressiveness of the isolates on their natural hosts (P ≤ 0.05). There also was a significant difference in the aggressiveness of isolates pathogenic on bitter gourd from Batangas and Bulacan (P ≤ 0.05) but isolates from Batangas and Bulacan had similar aggressiveness as bottle gourd (P ≥ 0.05). Aggressiveness of F. oxysporum on 7-day-old bitter gourd and bottle gourd was significantly different compared to those on 1-month-old plants, demonstrating an effect of the host age onaggressiveness. Correlations between aggressiveness of F. oxysporum isolates on 7-day-old and 1-month-old bitter gourd and bottle gourd were moderate (r = 0.63, 0.78). Out of 12 isolates from bottle gourd, only one isolate was pathogenic on 7-day-old bitter gourd. Four of the isolates from bitter gourd were pathogenic on 7-day-old bottle gourd but not on 1-month-old bottle gourd. No cross infection was observed on mature plants.

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Section: Pathogenicity and Aggressiveness Of F Oxysporum Isolates Onmentioning

confidence: 90%

Pathogenicity and aggressiveness of Fusarium oxysporum Schl. in bottle gourd and bitter gourd

Cumagun¹,

Aguirre²,

Relevante³

et al. 2010

Plant Prot. Sci.

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“…Final observations on disease development were made 14 days after inoculation as described by Vakalounakis et al (2004) Eight replicate pots of each treatment were used. Tests were repeated once.…”

Section: Harvest and Chemical Analysismentioning

confidence: 99%

Control of Fusarium Wilt of Cucumber Seedlings by Inoculation with an Arbuscular Mycorrhical Fungus

Hao

Christie

Qin

et al. 2005

Journal of Plant Nutrition

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A glasshouse pot experiment was conducted to investigate the impact of inoculation of cucumber at the germination stage with Glomus etunicatum BEG168 on plant yield and incidence of Fusarium oxysporum f.sp. cucumerinum inoculated 28 days after the start of the experiment. Inoculation with the AM fungus decreased both disease incidence and disease index. Mycorrhizal inoculation also increased P concentrations in the cucumber seedlings. The mycorrhizal seedlings had higher concentrations of proline and polyphenol oxidase activity but lower malondialdehyde than non-mycorrhizal seedlings, indicating that AM inoculation may have protected membrane permeability and reduced the extent of the damage caused by F. oxysporum. The results indicate that the mycorrhizal fungus may influence plant secondary metabolites and increase resistance to wilt disease in cucumber seedlings and may therefore have some potential as a biological control agent.

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“…Concerning vegetative compatibility in Verticillium dahliae, Rataj-Guranowska et al (2016) observed bridges between American testers VCG 2 and VCG 4, also between American and Dutch testers and between subgroup testers VCG 2A and 2B. The occurrence of these bridging strains is well known in F. oxysporum (Vakalounakis and Fragkiadakis 2004). Another difference between FOP and other formae speciales is demonstrated by the anomalies found in the pairings of race 1 isolates.…”

Section: Discussionmentioning

confidence: 91%

“…However, isolates belonging to different VCGs can also belong to the same clonal lineage (Baayen et al 2000). Several formae speciales of F. oxysporum have been characterized by VCG analysis (Lori et al 2004;Abo et al 2005), as well as by random amplified polymorphio DNA (RAPD) analysis (Alves-Santos et al 2007;Bayraktar et al 2008;Baysal et al 2010) and several studies have combined both markers (Vakalounakis et al 2004;Nagarajan et al 2006). This technique is appropriate for developing countries with inadequate facilities for molecular work and can rapidly determine genetic groups of many fungal pathogens and their relation to pathogenicity (Cumagun et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Relationship between pathogenicity, race and vegetative compatibility grouping among Algerian populations of Fusarium oxysporum f. sp. pisi causing pea wilt

Merzoug¹,

Belabid²

2018

Journal of Plant Protection Research

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Fusarium oxysporum f. sp. pisi (FOP) is a significant and destructive pathogen of field pea in Algeria. In the present study, 50 isolates of F. oxysporum f. sp. pisi, the causal agent of pea (Pisum sativum) wilt, collected from different parts of western Algeria and representing four races of the pathogen, were analyzed for virulence. The wilt incidence ranged from 6.66 to 88.33% on a highly susceptible cultivar (Little Marvel). Twenty-one isolates belonging to four races of FOP and one nonpathogenic F. oxysporum (FO) isolate were analyzed for vegetative compatibility in order to reveal the genetic structure of the population and to check the reliability of the method for the identification of physiological races of FOP. Obtained results showed that the FOP isolates could be classified into four main vegetative compatibility groups (VCGs) that corresponded to races l, 2A, 2B and 5. The race 6 isolate fell into the race 1 VCG. To our knowledge, this is the first such study in Algeria of its kind.

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Characterization of Fusarium oxysporum Isolates Obtained from Cucumber in China by Pathogenicity, VCG, and RAPD

Cited by 64 publications

References 17 publications

Pathogenicity and aggressiveness of Fusarium oxysporum Schl. in bottle gourd and bitter gourd

Pathogenicity and aggressiveness of Fusarium oxysporum Schl. in bottle gourd and bitter gourd

Control of Fusarium Wilt of Cucumber Seedlings by Inoculation with an Arbuscular Mycorrhical Fungus

Relationship between pathogenicity, race and vegetative compatibility grouping among Algerian populations of Fusarium oxysporum f. sp. pisi causing pea wilt

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