An evaluation of <i>Fusarium oxysporum</i> from crucifers based on pathogenicity, isozyme polymorphism, vegetative compatibility, and geographic origin

Bosland, Paul W.; Williams, Paul H.

doi:10.1139/b87-282

Cited by 141 publications

(95 citation statements)

References 19 publications

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“…This observation led Armstrong and Armstrong (1966) to revise the nomenclature and make the three formae speciales into races of one f. conglutinans. Subsequently, the accepted nomenclature has reverted to the original designations in recognition of the fact that the broad, overlapping host range for any of the forma specialis is not observed in the field (Bosland and Williams 1987).…”

Section: /Rfo1mentioning

confidence: 99%

RESISTANCE TO FUSARIUM OXYSPORUM 1, a Dominant Arabidopsis Disease-Resistance Gene, Is Not Race Specific

2005

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Arabidopsis thaliana ecotypes differ in their susceptibility to Fusarium wilt diseases. Ecotype Taynuilt-0 (Ty-0) is susceptible to Fusarium oxysporum forma specialis (f.) matthioli whereas Columbia-0 (Col-0) is resistant. Segregation analysis of a cross between Ty-0 and Col-0 revealed six dominant RESISTANCE TO FUSARIUM OXYSPORUM (RFO) loci that significantly contribute to f. matthioli resistance in Col-0 relative to Ty-0. We refer to the locus with the strongest effect as RFO1. Ty-0 plants in which only the Col-0 allele of RFO1 (RFO1 Col-0 ) was introduced were resistant to f. matthioli. Surprisingly, RFO1Col-0 also conferred resistance to f. raphani, demonstrating that RFO1-mediated resistance is not race specific. Expression of resistance by RFO2, RFO4, or RFO6 was dependent on RFO1 . Map-based cloning of RFO1 showed that RFO1 is identical to the previously named Arabidopsis gene WAKL22 (WALL-ASSOCIATED KINASE-LIKE KINASE 22), which encodes a receptor-like kinase that does not contain an extracellular leucine-rich repeat domain. Consistent with these results, a Col-0 rfo1 loss-of-function mutant was more susceptible to f. matthioli, f. conglutinans, and f. raphani. Thus, RFO1 encodes a novel type of dominant disease-resistance protein that confers resistance to a broad spectrum of Fusarium races.

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Section: /Rfo1mentioning

confidence: 99%

RESISTANCE TO FUSARIUM OXYSPORUM 1, a Dominant Arabidopsis Disease-Resistance Gene, Is Not Race Specific

2005

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“…Isolates from the soil (U 6 10 2 , U 9 10 6 , and U 10 10 6 ) were non-pathogenic on bottle gourd while isolates from the stems of bottle gourd caused (Lim 1972). Several studies have showed that vegetative compatibility grouping (VCG) and pathogenicity are closely correlated (Bosland & Williams 1987;Larkin et al 1990;Katan et al 1991;Vakalounakis & Fragkiadakis 1999). Cumagun et al (2008) reported four VCGs from F. o. f.sp.…”

Section: Pathogenicity and Aggressiveness Of F Oxysporum Isolates Onmentioning

confidence: 99%

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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“…betae represented distinct isolated populations indigenous to their respective areas. Other researchers (Bosland and Williams 1987;Woo et al 1996), however, reported that the formae speciales they were investigating did not exhibit a correlation between VCG and geographical origin. Although welsh onion isolates tested in this study was not comprehensive, these isolates tended to be distinct VCGs from onion isolates and were found to be limited in their geographical origin.…”

Section: Discussionmentioning

confidence: 82%

Vegetative Compatibility Groups within Fusarium oxysporum f. sp. cepae in Hokkaido-Japan

Widodo¹,

Kondo²,

Kobayashi³

et al. 2008

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An evaluation of Fusarium oxysporum from crucifers based on pathogenicity, isozyme polymorphism, vegetative compatibility, and geographic origin

Cited by 141 publications

References 19 publications

RESISTANCE TO FUSARIUM OXYSPORUM 1, a Dominant Arabidopsis Disease-Resistance Gene, Is Not Race Specific

RESISTANCE TO FUSARIUM OXYSPORUM 1, a Dominant Arabidopsis Disease-Resistance Gene, Is Not Race Specific

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

Vegetative Compatibility Groups within Fusarium oxysporum f. sp. cepae in Hokkaido-Japan

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