The use of Trichoderma species to control strawberry fruit rots

Tronsmo, Arne; Dennis, C.

doi:10.1007/bf03041462

Cited by 116 publications

(42 citation statements)

References 6 publications

(7 reference statements)

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“…A. flavus and F. solani were observed to persist over a more prolonged duration with 2 and 3% rot, respectively ( Table 2). The observation is similar to the findings of Tronsmo andObalua andOti 2449 Dennis (1977) and Okigbo and Ikediagwu (2000) in their investigation on the effects of T. viride on post harvest Botrytis rot of strawberry and yam rot, respectively. The additional contribution of the extracellular metabolites of T. viride as a means of biocotrol is observed not only by the in vitro inhibition of spore germination of all the tested rot pathogens by the culture filtrate of the antagonist (Table 1), but also by the induction of a zone of inhibition by the antagonist against the colonies of the pathogens.…”

Section: Discussionsupporting

confidence: 89%

Antagonistic properties of Trichoderma viride on post harvest cassava root rot pathogens

Ubalua¹,

A²,

Oti³

et al. 2007

Afr. J. Biotechnol.

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The effective in vitro screening tests of Trichoderma viride for antagonism against post harvest pathogens of cassava roots (Manihot esculenta Crantz) rot together with its competitive and mycoparasitic abilities informs its selection as the most promising candidate for the biocontrol of post harvest cassava root rot pathogens. While the percentage germination of the spores were observed to increase with increasing dilution of the culture filtrate (100, 50, 25, and 10% ) at a concentration of 20,000 spores/ml, the percentage rot recorded amongst the untreated cassava roots ranged from 4% (Rhizopus oryzae) to 44% (Aspergillus flavus). Treatment with the antagonist and the subsequent storage resulted in a remarkable reduction in the frequency of occurrence of the normal root surface mycoflora and the pathogens over a 3 weeks storage period. Botryodiplodia theobromae and R. oryzae were isolated only in the first week of storage and at a frequency of 3 and 2% rot, respectively, after treatment whereas A. flavus and Fusarium solani persisted throughout the whole storage period with 2 and 3% rot on the third week, respectively. The observed results suggest that T. viride is root surface competent and highly antagonistic.

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Section: Discussionsupporting

confidence: 89%

Antagonistic properties of Trichoderma viride on post harvest cassava root rot pathogens

Ubalua¹,

A²,

Oti³

et al. 2007

Afr. J. Biotechnol.

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“…Numerous authors have evaluated the efficacy of BCAs against post-harvest diseases under field conditions over a single year (Benbow and Sugar 1999;Chand-Goyal and Spotts 1996;Leibinger et al 1997), and highly variable results have been obtained in multi-year field experiments where a BCA against B. cinerea was applied (Kovach et al 2000, Sutton et al 1997Tronsmo and Dennis 1977). Ippolito and Nigro (2000) stressed that successful pre-harvest application of an antagonist depends on many factors such as rain, wind, temperature, and relative humidity.…”

Section: Discussionmentioning

confidence: 99%

Assessment of Pichia anomala (strain K) efficacy against blue mould of apples when applied pre- or post-harvest under laboratory conditions and in orchard trials

et al. 2008

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The yeast Pichia anomala strain K was selected in Belgium from the apple surface for its antagonistic activity against post-harvest diseases of apples. The efficacy of this strain against P. expansum was evaluated in the laboratory in three scenarios designed to mimic practical conditions, with different periods of incubation between biological treatment, wounding of fruit surface, and pathogen inoculation. Higher protection levels and higher final yeast densities were obtained when the applied initial concentration was 1×10 8 cfu ml −1 than when it was only 1×10 5 cfu ml −1 . The protection level correlated positively with the yeast density determined in wounds and was influenced by apple surface wetness. In orchard trials spanning two successive years, biological treatment against P. expansum, based on a powder of P. anomala strain K (1×10 7 cfu ml −1 ), β-1,3-glucans (YGT 2 g l −1 ), and CaCl 2 .2H 2 0 (20 g l −1 ), was applied to apples pre-or post-harvest under practical conditions and its effect compared with standard chemical treatments. The first year, the highest reduction (95.2%) against blue decay was obtained by means of four successive fungicide treatments and the next-highest level (87.6%) with pre-harvest high-volume spraying of the threecomponent mixture 12 days before harvest. The second year, the best results were obtained with post-harvest Sumico (carbendazim 25% and diethofencarb 25%) treatment and post-harvest biological treatment, both by dipping the apples, 88.3 and 56.3% respectively. A density threshold of 1×10 4 cfu cm −2 of strain K on the apple surface seemed to be required just after harvest for high protective activity, whatever the method and time of application. In the case of pre-harvest biological treatments, variations in meteorological conditions between the 2 years may have considerably affected strain K population density and its efficacies.

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“…It is obvious that no single medium can reflect all the possible antibiotic-growth-mycoparasitic interactions that can occur. Similarly, antagonist-pathogen interactions have also been shown to be dependent upon temperature (Tronsmo & Dennis, 1977Phillips, 1986), pH (Geypens, 1977;Sy et al, 1984) and water potential (Campbell & Clor, 1985), as well as other factors likely to be important in the place of usage of any biocontrol agents (Whipps, 1986). The media used here were chosen partly because of their widespread adoption in studies of this kind, however, they are subject to inherent variability depending, for instance, on soil or water type or agar batch, and thus they are not strictly defined.…”

Section: Discussionmentioning

confidence: 99%

Effect of Media on Growth and Interactions Between a Range of Soil‐borne Glasshouse Pathogens and Antagonistic Fungi

Whipps¹

1987

New Phytologist

184

119

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SUMMARYThe growth of and interactions between the glasshouse pathogens, Rhizoctonia solani Kiihn, Fusarium oxysporum Schlect., Pyrenochaeta lycopersici Schneider & Gerlach, Phomopsis sclerotioides van Kesteren, Sclerotinia sclerotiorum (Lib.) de Bary and Botrytis cinerea Pers. and the antagonistic fungi, Trichoderma harzianum Rifai, Trichoderma viride Pers., Coniothyrium minitans Campbell, Gliocladium roseum (Link.) Bain and Pythium oligandrum Dreschlgr were examined on tap water agar, soil extract agar and potato dextrose agar. The medium had a significant effect on the growth rates of the fungi as well as the production of, and response to, volatile and non-volatile antibiotic compounds and hyphal interactions. Responses to the media appeared to be related both to inherent properties of the fungi and to their natural ecological behaviour. The significance of in vitro assays in screening systems for biological control agents of soil-borne plant pathogens is discussed.

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The use of Trichoderma species to control strawberry fruit rots

Cited by 116 publications

References 6 publications

Antagonistic properties of Trichoderma viride on post harvest cassava root rot pathogens

Antagonistic properties of Trichoderma viride on post harvest cassava root rot pathogens

Assessment of Pichia anomala (strain K) efficacy against blue mould of apples when applied pre- or post-harvest under laboratory conditions and in orchard trials

Effect of Media on Growth and Interactions Between a Range of Soil‐borne Glasshouse Pathogens and Antagonistic Fungi

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