Studies on Fusarium Wilt of Bananas: Vii. Field Control

Stover, R. H.; Hildreth, R. C.; Thornton, N. C.

doi:10.1139/b61-015

Cited by 10 publications

(17 citation statements)

References 3 publications

(1 reference statement)

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“…Certain IGS genotypes were detected more commonly on tomato, whereas others were found more commonly on wheat, suggesting that the roots of wheat and tomato plants had a selective effect on the population structure of F. oxysporum (Edel et al ., 1997b). In the current study, it is possible that isolates from sites 1–3 are genetically similar because banana root exudates from the Williams banana cultivar may favour their selectiveness, as shown previously by Stover et al . (1961).…”

Section: Discussionsupporting

confidence: 63%

Isolation and characterization of nonpathogenic Fusarium oxysporum isolates from the rhizosphere of healthy banana plants

et al. 2006

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One of the most serious diseases of banana is fusarium wilt, caused by Fusarium oxysporum f.sp. cubense ( Foc ). The objectives of this study were to isolate and identify nonpathogenic F. oxysporum strains from soils suppressive to banana wilt, and to determine the diversity of these isolates. More than 100 Fusarium strains were isolated from the rhizosphere of banana plants and identified to species level. Pathogenicity testing was carried out to confirm that these isolates were nonpathogens of banana. A PCR-based RFLP analysis of the intergenic spacer region of the ribosomal RNA operon was used to characterize the nonpathogens. The isolates were also compared with isolates of Foc from South Africa and the known biological control isolate of F. oxysporum , Fo47. The species-specific primers FOF1 and FOR1, in addition to morphological features, were used to confirm the identity of F. oxysporum isolates included in the PCR-RFLP analysis. Twelve different genotypes could be distinguished, identified by a six-letter code allocated to each isolate following digestion with the restriction enzymes Hae III, Hha I, Hin fI, Msp I, Rsa I and Scrf I. Eleven of these included nonpathogenic F. oxysporum isolates, and these groups could all be distinguished from the genotype that included Foc . Fo47 was included in one of the genotype groups consisting of nonpathogenic F. oxysporum isolates from South Africa.

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Section: Discussionsupporting

confidence: 63%

Isolation and characterization of nonpathogenic Fusarium oxysporum isolates from the rhizosphere of healthy banana plants

et al. 2006

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“…The first major outbreak of Fusarium wilt (caused by the so-called Race 1 strain of Foc) decimated the large-scale production of the susceptible banana subgroup Gros Michel (Musa AAA). A gradual shift to resistant Cavendish (Musa AAA) cultivars controlled the epidemic in Latin America and the Caribbean during the last century (Harper 1950;Perez-Vicente 2004;Ploetz 1990;Stover 1961). This shift to Cavendish cultivars saved the banana industry.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, soil management receives little attention as a strategy for crop disease management. Although Rishbeth (1955) and Stover (1961) already discussed the potential of soil management in the case of Foc Race 1 in bananas, the research into soil management to control Fusarium wilt became less relevant with the discovery and introduction of Cavendish bananas. Problems with Race 1 in the small-scale production of susceptible varieties and the recent spread of Foc TR4 renewed the interest into soil management for Fusarium wilt management.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the potential of soil management to reduce the effect of Fusarium oxysporum f. sp. cubense in banana (Musa AAA)

et al. 2021

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Fusarium oxysporum f. sp. cubense (Foc) causes Fusarium wilt in banana (Musa AAA). Foc Race 1 devastated the subgroup Gros Michel during the first half of the twentieth century. The Gros Michel was largely replaced by the resistant subgroup Cavendish in the 1950s. However, in the 1980s, Foc Tropical Race 4 started to spread affecting Cavendish bananas. No proper control measures have been found to deal with the disease. This paper re-takes an important research line from the 1950s to evaluate the potential of soil management for Fusarium wilt management. The role of soil properties on Fusarium wilt in bananas was studied in two greenhouse experiments. It was evaluated whether the influence of two main soil properties (pH and N) on Fusarium wilt is similar for Race 1 and Tropical Race 4. Two soil pH levels (lower than 5.2 and higher than 6.0) respectively ensured through acidification and liming; and three levels of N (ammonium nitrate, 33.5% N) weekly doses (low:0 N g, medium: 0.08 N g and high: 0.25 N g per plant) were achieved. The first experiment in Costa Rica confirmed the earlier results about the influence of soil pH and nitrogen on Fusarium wilt (Race 1) on Gros Michel bananas. The second experiment in The Netherlands evaluated the influence of pH and N on interactions between Foc (both Race 1 and Tropical Race 4) and Cavendish bananas. Results in both experiments showed that soil pH affected crop development and the disease. Besides, the interaction of the lower pH x the higher N accelerated the infection and reduced plant development. As such, the results showed that soil management has the potential to reduce the impacts of Fusarium wilt while dealing with Race 1 and Tropical Race 4 although it requires confirmation and further evaluation under field conditions.

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“…Because nonpathogenic F. oxysporum endophytes from the three field sites sometimes grouped in the same IGS haplotypes, these haplotypes are either widely distributed or a great movement of haplotypes has occurred in the area. Another possibility is that banana root exudates might favor their selection (19,51).…”

Section: Discussionmentioning

confidence: 99%

“…Peng et al (38) reported that soil edaphic properties such as Ca and Fe content, temperature, and water content affected chlamydospore germination and Fusarium wilt severity in banana plants under greenhouse conditions, while Domínguez et al (14) demonstrated that struc-tural stability of soil aggregates differ in soils conducive and suppressive to Fusarium wilt of banana. In his monograph on Fusarium wilt in Central America, Stover (50,51) indicated that soil pH and Ca content of soils were responsible for the suppression of Panama disease in the field, and that NH 4 fertilizer enhances the development of the disease.…”

mentioning

confidence: 99%

Evaluation of Nonpathogenic Fusarium oxysporum and Pseudomonas fluorescens for Panama Disease Control

2011

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Belgrove, A., Steinberg, C., and Viljoen, A. 2011. Evaluation of nonpathogenic Fusarium oxysporum and Pseudomonas fluorescens for Panama disease control. Plant Dis. 95:951-959.Nonpathogenic Fusarium oxysporum endophytes from healthy banana roots were evaluated for their ability to reduce Fusarium wilt of banana (Panama disease). Isolates were identified morphologically and by using species-specific primers. Pathogenicity was confirmed by inoculating banana plantlets in the greenhouse. Nonpathogenic F. oxysporum isolates were grouped into 14 haplotype groups by polymerase chain reaction restriction fragment length polymorphism analysis of the intergenic spacer region, and representative isolates evaluated for biocontrol of F. oxysporum f. sp. cubense. In the greenhouse, 10 nonpathogenic F. oxysporum isolates were able to significantly reduce Fusarium wilt of banana. The isolate that protected banana plantlets best in the greenhouse, a nonpathogenic F. oxysporum from the root rhizosphere, and Pseudomonas fluorescens WCS 417 were then field tested. When the putative biological control organisms were tested in the field, neither the nonpathogenic F. oxysporum, P. fluorescens, nor combinations thereof reduced Fusarium wilt development significantly. A number of factors could contribute to the lack of field protection, including soil microbial and chemical composition and reduced survival of biocontrol organisms in banana roots. A lack of knowledge regarding the etiology of Fusarium wilt of 'Cavendish' banana in the subtropics and the effect of F. oxysporum f. sp. cubense race and banana cultivar in protection of banana by biocontrol organisms should be further investigated.

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Studies on Fusarium Wilt of Bananas: Vii. Field Control

Cited by 10 publications

References 3 publications

Isolation and characterization of nonpathogenic Fusarium oxysporum isolates from the rhizosphere of healthy banana plants

Isolation and characterization of nonpathogenic Fusarium oxysporum isolates from the rhizosphere of healthy banana plants

Evaluating the potential of soil management to reduce the effect of Fusarium oxysporum f. sp. cubense in banana (Musa AAA)

Evaluation of Nonpathogenic Fusarium oxysporum and Pseudomonas fluorescens for Panama Disease Control

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