Characterisation of Strains of Fusarium oxysporum f.sp. cubense by Production of Volatiles

Moore, Natalie; Hargreaves, P. A.; Pegg, K. G.; Irwin, J. A. G.

doi:10.1071/bt9910161

Cited by 40 publications

(29 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These include vegetative compatibility (Buxton, 1962;Puhalla, 1985), pathogenicity on different crops (Brake et al, 1990;Pegg et al, 1993;Pegg et al, 1994;Ploetz, 1994;Su et al, 1986;Waite and Stover, 1960), isozyme profiling (Ploetz, 1990), volatile compound production (Moore et al, 1991), and chromosome number and genome size (Boehm et al, 1994). A major disadvantage of these characters is their limited variation and that some, such as pathogenicity, are under strong selection pressure.…”

Section: The Evolution Of Fusarium Oxysporummentioning

confidence: 99%

Current status of the taxonomic position of Fusarium oxysporum formae specialis cubense within the Fusarium oxysporum complex

Fourie

Steenkamp

Ploetz

et al. 2011

Infection, Genetics and Evolution

129

View full text Add to dashboard Cite

Fusarium oxysporum is an asexual fungal species that includes human and animal pathogens and a diverse range of nonpathogens. Pathogenic and nonpathogenic strains of this species can be distinguished from each other with pathogenicity tests, but not with morphological analysis or sexual compatibility studies. Substantial genetic diversity among isolates has led to the realization that F. oxysporum represents a complex of cryptic species. Fusarium oxysporum f. sp cubense (Foc), causal agent of Fusarium wilt of banana, is one of the more than 150 plant pathogenic forms of F. oxysporum. Multi-gene phylogenetic studies of Foc revealed at least eight phylogenetic lineages, a finding that was supported by random amplified polymorphic DNAs, restriction fragment length polymorphisms and amplified fragment length polymorphisms. Most of these lineages consist of isolates in closely related 2 vegetative compatibility groups, some of which possess opposite mating type alleles, MAT-1 and MAT-2; thus, the evolutionary history of this fungus may have included recent sexual reproduction. The ability to cause disease on all or some of the current race differential cultivars has evolved convergently in the taxon, as members of some races appear in different phylogenetic lineages. Therefore, various factors including co-evolution the plant host and horizontal gene transfer are thought to have shaped the evolutionary history of Foc. This review discusses the evolution of Foc as a model formae specialis in F. oxysporum in relation to recent research findings involving DNA-based studies.

show abstract

Section: The Evolution Of Fusarium Oxysporummentioning

confidence: 99%

Current status of the taxonomic position of Fusarium oxysporum formae specialis cubense within the Fusarium oxysporum complex

Fourie

Steenkamp

Ploetz

et al. 2011

Infection, Genetics and Evolution

129

View full text Add to dashboard Cite

show abstract

“…Each segment was cut into 5 subsections prior to plating onto 1/6 PDA amended with 0.5 g/L of streptomycin, and incubated at 20°C under a black light. The volatile odour test (Moore et al 1991) was used to distinguish between saprophytic and pathogenic strains of Fo. Five mycelial replicates taken from each monoconidial pure culture were tested.…”

Section: Soil and Soil Treatment Preparationmentioning

confidence: 99%

Effect of organic amendments and solarisation on Fusarium wilt in susceptible banana plantlets, transplanted into naturally infested soil

Nasir¹,

Pittaway²,

Pegg³

2003

Aust. J. Agric. Res.

View full text Add to dashboard Cite

Abstract. Despite extensive research since pathogenicity was first established in 1919, no cultural or chemical control strategy has proven effective against Fusarium wilt of bananas. The efficacy of cultural control is attributed to the suppression of pathogen activity. Yet, amending naturally infested soil with aged chicken manure has been shown to enhance disease severity, without any change in the activity of the pathogen Fusarium oxysporum f. sp. cubense (Foc) in the soil. In this study, the effect of amending soil with composted sawdust, and of solarising soil, was compared with the effect of amending soil with chicken manure. Bioassays comparing the activity of Foc in the soil with the extent of invasion of banana pseudostem tissue by Foc were used to investigate why strategies targetting pathogen survival have not proven successful in controlling this disease.The enhancement of Foc invasion of the banana plantlets was reproduced with the addition of chicken manure to the naturally infested soil. However, changes in the activity of Foc in the soil were not associated with changes in the frequency of invasion of the plantlets. Invasion of banana pseudostems in the sawdust and solarisation treatments was not significantly different from invasion in the respective control treatments, despite a reduction in the activity of Foc in the sawdust-amended soil and an enhancement in the solarised soil. Moreover, the increase in Foc activity in the solarised soil recorded during the bioassays occurred despite the effectiveness of solarisation in reducing the survival of Foc in pre-colonised banana root tips buried in the soil. Changes in the frequency of invasion were associated with changes in the availability of mineral nitrogen, particularly ammonium N. These results suggest that the physiological response of banana cultivars to ammonium N may be associated with their susceptibility to Fusarium wilt. Accordingly, cultural strategies for controlling Panama disease will only be effective if they enhance the ability of the host to resist invasion.A R 0 2 0 9 9 E f f e c t o f o r g a n i c a m e n d m e n t s a n d s o l a r i s a t i o n o n F u s a r i u m w i l t N . N a s i r e t a l .

show abstract

“…Stover (1962) showed that isolates from Bluggoe, which were placed in race 2, did not produce an odour, whereas isolates in race 1 belonged to either odoratum or inodoratum. However, Moore et al (1991) showed that the production of volatiles on steamed rice by Australian isolates of F. oxysporum f. sp. cubense correlated well with common vegetative compatibility groups of race 4 isolates.…”

mentioning

confidence: 99%

“…cubense were cultured on steamed rice (25 mL of rice and 50 mL of water added into 100 mL Erlenmeyer flasks, which were plugged with cotton-wool and sterilized by autoclaving at 121 o C for 20 minutes). Cultures were grown at 28 o C. After 10 days, cultures were classified based upon the presence of a strong volatile odor (Moore et al, 1991). From the 46 isolates of F. oxysporum f. sp.…”

mentioning

confidence: 99%

Occurrence of Tropical Race 4 of Fusarium oxysporum f. sp. cubense in Indonesia

Wibowo¹,

Subandiyah²,

Sumardiyono³

et al. 2011

The Plant Pathology Journal

View full text Add to dashboard Cite

Characterisation of Strains of Fusarium oxysporum f.sp. cubense by Production of Volatiles

Cited by 40 publications

References 0 publications

Current status of the taxonomic position of Fusarium oxysporum formae specialis cubense within the Fusarium oxysporum complex

Current status of the taxonomic position of Fusarium oxysporum formae specialis cubense within the Fusarium oxysporum complex

Effect of organic amendments and solarisation on Fusarium wilt in susceptible banana plantlets, transplanted into naturally infested soil

Occurrence of Tropical Race 4 of Fusarium oxysporum f. sp. cubense in Indonesia

Contact Info

Product

Resources

About