Genetic diversity and pathogenicity of Fusarium oxysporum isolated from wilted Welsh onion in Japan

Dissanayake, M.L.M.C.; Kashima, R.; Tanaka, Shuhei; Ito, Shin

doi:10.1007/s10327-009-0152-6

Cited by 33 publications

(18 citation statements)

References 17 publications

(23 reference statements)

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“…These results agree with previous studies, which showed variation in the virulence of F. oxysporum isolates from rocket (Catti et al 2007;Garibaldi et al 2006), lamb's lettuce ) and onion (Dissanayake et al 2009). Some of the variation in the aggressiveness found in the isolates of the forma specialis raphani cannot be easily linked to the IGS sequencing results.…”

Section: Discussionsupporting

confidence: 95%

“…According to these researchers, the diversity of the IGS haplotype within F. oxysporum suggests that sexual reproduction is infrequent or absent in this fungus. Recently, Dissanayake et al (2009) reported four different clusters among 30 isolates of F. oxysporum on onion in Japan.…”

Section: Discussionmentioning

confidence: 98%

“…The IGS region, which separates rDNA repeat units, is particularly suitable for studying intraspecific relationships (Appel and Gordon 1996;Mbofung et al 2007). Phylogenetic analysis of the IGS region sequence is very useful for studying the composition of F. oxysporum populations (Dissanayake et al 2009;Enya et al 2008;Kawabe et al 2005Kawabe et al , 2007Srinivasan et al 2010).…”

Section: Introductionmentioning

confidence: 97%

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Genetic diversity and pathogenicity of Fusarium oxysporum isolated from wilted rocket plants in Italy

et al. 2011

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Thirty-six isolates of Fusarium oxysporum originated from Eruca vesicaria and Diplotaxis tenuifolia together with eight reference strains belonging to the formae speciales raphani, matthioli and conglutinans, typical on the Brassicaceae family, were tested for pathogenicity on two species of rocket plants (E. vesicaria L., syn. E. sativa, cv. 'Rucola coltivata'; and D. tenuifolia cv. 'Winter') cultivated in the glasshouse. The results showed that different isolates were slightly, moderately or highly virulent.

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Section: Discussionsupporting

confidence: 95%

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 97%

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Genetic diversity and pathogenicity of Fusarium oxysporum isolated from wilted rocket plants in Italy

et al. 2011

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“…wäre mittels biochemischer bzw. molekularbiologischer Untersuchungen zu zeigen (Bayraktar et al 2010;galvan et al 2008;bayraktar und Dolar 2011;Swift et al 2002;Dissanayake et al 2009;Özer et al 2003;elZawahry et al 2000).…”

Section: Gewicht (G)unclassified

Auftreten und Nachweis von Fusarium oxysporum und F. proliferatum an Steck- und Saatzwiebeln

et al. 2011

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3O r i g i n a l b e i t r a g Zusammenfassung Der erreger der Zwiebelbasalfäule, Fusarium oxysporum f. sp. cepae, ist aufgrund seiner hohen temperaturansprüche vorwiegend in wärmeren anbauregionen verbreitet. Mittlerweile tritt er auch in Deutschland auf, insbesondere in Jahren mit höheren Durchschnittstemperaturen während der Vegetationszeit. Phytopathologische Untersuchungen an 300 symptomlosen Zwiebelbulben zeigten, dass ca. 10 % der bulben mit Fusarium spp. infiziert waren, wobei die art F. oxysporum dominierte. Steckzwiebeln, die auf diesen Flächen als Pflanzgut eingesetzt wurden, waren zu 19 bis 98 % latent mit F. oxysporum befallen. Das kontaminierte Pflanzgut führte bis zur Ernte jedoch nicht wie erwartet zu einem entsprechend hohem Auftreten an Pflanzen mit für die Zwiebelbasalfäule charakteristischen Symptomen wie nass-oder trockenfäule. es ist davon auszugehen, dass die Symptomausprägung insbesondere von den gegebenen klimatischen bedingungen beeinflusst wird. Dies unterstützen Ergebnisse zu Untersuchungen der Pathogenität isolierter Fusarium spp.-isolate unter kontrollierten Kulturbedingungen. So resultierte eine inokulation des Kultursubstrates mit ausgewählten Fusarium spp.-isolaten unter für den Zwiebelanbau suboptimalen Kulturbedingungen in einer Reduktion des Pflanzenaufgangs um bis zu 70 %, während dies unter optimalen Kulturbedingungen nicht zu beobachten war. Unter optimalen bedingungen wurde jedoch in späteren entwicklungsstadien eine Reduktion des Pflanzenwachstums festgestellt. neben F. oxysporum wurde sowohl an den Zwiebeln und insbesondere am Saatgut F. proliferatum nachgewiesen. Dieser gleichfalls wärmeliebende Pilz kam in allen untersuchten Saatgutproben vor, wobei Kontaminationsraten bis zu 62 % ermittelt wurden. Für F. oxysporum wurde dagegen nur eine Befallshäufigkeit von unter 1,5 % an einigen Saatgutproben ermittelt. Für beide arten F. oxysporum und F. proliferatum konnte deren Pathogenität an der Zwiebel bestätigt werden; wenngleich große Unterschiede in der Virulenz der isolate zu verzeichnen waren.Schlüsselwörter Zwiebel · Fusarium oxysporum f. sp. cepae · Fusarium proliferatum · nachweis · Pathogenität Occurrence and Detection of Fusarium oxysporum and F. proliferatum on Sown and Planted OnionsAbstract the pathogen Fusarium oxysporum f. sp. cepae inducing the Fusarium basal rot mainly spreads in warmer cultivation regions due to its adaptability to high temperature. Meanwhile the pathogen occurs in germany as well, especially in years with relatively high average temperature during the growing season. Phytopathological investigations of 300 symptomless onion bulbs showed a contamination rate of approximately 10% with regard to Fusarium spp., with F. oxysporum proving to be the predominant species. Onion sets planted in these fields were latently infected with F. oxysporum at rates of 19-98%. Unexpectedly, the contaminated sets did not indispensably lead to a high occurrence of plants exhibiting characteristic symptoms of Fusarium basal rot such as wet and dry rot. PresumGesund...

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“…W.C. Snyder & H.N. Hans is one of the most destructive diseases of onion, which cause serious yield losses in Japan, the Netherlands, and the USA (Sumner 1995;Galván et al 2008;Dıssanayake et al 2009). In Turkey, Türkkan and Karaca (2006) found that Fusarium basal rot is a common and severe disease in Amasya province where onions are intensively cultivated.…”

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confidence: 99%

Evaluation of antifungal activity of sodium salts against onion basal rot caused by Fusarium oxysporum f.sp. cepae

Türkkan¹,

Erper²

2014

Plant Prot. Sci.

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Türkkan M., Erper I. (2014): Evaluation of antifungal activity of sodium salts against onion basal rot caused by Fusarium oxysporum f.sp. cepae. Plant Protect. Sci., 50: 19-25.The efficacy of twelve sodium salts as possible alternatives to synthetic fungicides for the control of onion basal rot caused by Fusarium oxysporum f.sp. cepae was evaluated. In vitro tests showed that there were significant differences between the inhibitory effects of sodium salts on the mycelial growth (P ≤ 0.05) and 2% (w/v) concentrations of sodium metabisulfite and sodium fluoride completely inhibited mycelial growth of the fungus, while other salts did not. Sodium metabisulfite and sodium phosphate monobasic had lower pH values than the other salts. Unlike sodium metabisulfite, sodium phosphate monobasic could not decrease the mycelial growth. The ED 50 , minimum inhibition concentration (MIC), and minimum fungicidal concentration (MFC) values indicated that sodium metabisulfite was more inhibitory to the fungus compared to sodium fluoride. In soil tests, inhibitory effect of sodium metabisulfite on the fungus was higher than that of sodium fluoride, where sodium metabisulfite completely inhibited mycelial growth at even 0.4% concentration.

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Genetic diversity and pathogenicity of Fusarium oxysporum isolated from wilted Welsh onion in Japan

Cited by 33 publications

References 17 publications

Genetic diversity and pathogenicity of Fusarium oxysporum isolated from wilted rocket plants in Italy

Genetic diversity and pathogenicity of Fusarium oxysporum isolated from wilted rocket plants in Italy

Auftreten und Nachweis von Fusarium oxysporum und F. proliferatum an Steck- und Saatzwiebeln

Evaluation of antifungal activity of sodium salts against onion basal rot caused by Fusarium oxysporum f.sp. cepae

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