Sclerotial mycoflora and its role in natural biological control of ‘white-rot’ disease

N., J.; Saxena, Vikal

doi:10.1007/bf01928513

Cited by 13 publications

(8 citation statements)

References 6 publications

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“…Neither were as effective as Penicillium spp. described by Rai and Saxena (1975), and S. sclerotivorum described by Adams and Ayers (1980). However, in previous studies, these mycoparasites were tested under different conditions, which might also affect their efficacy in parasitizing sclerotia.…”

Section: Discussionmentioning

confidence: 99%

“…Since this cost factor is prohibitively high, cheaper methods of control are sought. Several workers have shown that herbicides (Cerkauskas et al, 1986;Radke and Grau, 1986) and mycoparasites Ayers and Adams, 1981;Huang, 1978;1980;Rai and Saxena, 1975;Tu, 1980;Turner and Tribe, 1976) may reduce sclerotium germination in this pathogen. Since herbicides are already used to control weeds, and mycoparasites are present in soil, their use could provide an alternative method of disease control.…”

Section: Introductionmentioning

confidence: 99%

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The effects of herbicides and mycoparasites at different moisture levels on carpogenic germination in Sclerotinia sclerotiorum

1992

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Two similar inclined boxes were constructed differing in several aspects from one developed earlier to regulate soil moisture potential. Each box had six 10-cm wide compartments with a perforated plastic cover. Boxes were placed in a room held at 10°C with a RH of 90%. The differential perforations in the plastic that covered the soil surface regulated evaporation which in turn regulated soil moisture. One box was used to carry out experiments on five herbicides at different matric potentials while the other box was used to test five mycoparasites. The herbicides chlorsulfuron, cyanazine, metribuzin, triallate and trifluralin significantly reduced the carpogenic germination of sclerotia of Sclerotinia sclerotiorum. Among five mycoparasites, Coniothyrium minitans completely inhibited germination. PeniciUium sp., Sporidesmium sclerotivorum and Teratosperma oligoeladium reduced germination in one of the two tests. The influence of soil moisture on carpogenic germination was significant in all tests. There were interactions between herbicides and moisture and also between mycoparasites and moisture. However, soil moisture did not have a marked effect on the efficacy of herbicides and mycoparasites.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effects of herbicides and mycoparasites at different moisture levels on carpogenic germination in Sclerotinia sclerotiorum

1992

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“…It exerts antibiotic activity against R. solani, like G. roseum and many other antagonists associated with the sclerotia of R. solani (Naiki and Ui, 1972). Sclerotia of other fungi than R. solani can be destroyed by 'parasites' which are known to produce toxic substances (Karhuvaara, 1960;Makkonen and Pohjakallio, 1960;Rai and Saxena, 1975;Walker and Maude, 1975).…”

Section: Significance Of Hyperparasites In the Fieldmentioning

confidence: 99%

Hyperparasites of Rhizoctonia solani in Dutch potato fields

Jager

Hoopen

Velvis

1979

Netherlands Journal of Plant Pathology

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Gliocladium roseum was found to be the most common and probably the most effective mycoparasite in potato fields in the northern parts of the Netherlands. It is able to parasitize and kill living hyphae at temperatures of 12~ and higher. Sclerotia of R. solani are often infected and killed by this fungus under suitable conditions, i.e. at temperatures of 16 ~ and more. Killing of sclerotia by other antagonistic organisms was also observed. It is also shown by not parasitic fungi and is caused by toxins produced by the antagonist.The development of the G. roseum population was studied during the growth of a potato crop in two soils. In both soils its initial level was very low. In both a slightly acid sandy soil and a neutral sandy loam, suppression of R. solani can occur; G. roseum accumulated in the former mainly under continuous potato crops, Colletotrichum coccodes was the main antagonist in the latter.

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“…Alternaria alternata Inglis and Boland 1992 Aspergillus niger Rai and Saxena 1975 Aspergillus ustus Rai and Saxena 1975 Coniothyrium minitans Tribe 1957;Huang and Hoes 1976;Turner and Tribe 1976;Whipps and Budge 1990;Budge and Whipps 1991;Trutmann et al 1980;Tu 1984;Huang et al 2000;Jones and Whipps 2002;McQuilken et al 2003, McQuilken andChalton 2009;Gerlagh et al 2003;Chitrampalam et al 2008;Jones et al 2011;Zeng et al 2012b;Bitsadze et al 2015;Jones et al 2015 Drechslera sp. …”

Section: Species Referencesmentioning

confidence: 99%

Biological control of the soil-borne fungal pathogen Sclerotinia sclerotiorum –– a review

2018

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Diseases caused by Sclerotinia sclerotiorum (Lib) de Bary are difficult to control and cause increasing losses of horticultural crops worldwide. Reasons of this phenomenon are various: (i) the specialization of crop production that causes the accumulation of the pathogen in the soil; (ii) the lack of a safe and efficient method of soil fumigation; (iii) the specific life cycle of S. sclerotiorum with survival structures (sclerotia), resistant to chemical and biological degradation. Sclerotinia diseases depend on many environmental factors which determine sclerotia survival and ascospores dissemination, because plants are mainly infected by air-borne ascospores from carpogenic germination of sclerotia. Due to the lack of effective synthetic agents for eradication of S. sclerortiorum from soil considerable interest has been focused on biological control, especially the selection of microorganisms with mycoparasitic activity towards S. sclerotiorum sclerotia, that can decrease their number in the soil. In this work we review reports on the use of different antagonistic fungi and bacteria in the control of S. sclerotiorum and discuss the suppressive effect of organic amendments against this soil-borne pathogen.

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Sclerotial mycoflora and its role in natural biological control of ‘white-rot’ disease

Cited by 13 publications

References 6 publications

The effects of herbicides and mycoparasites at different moisture levels on carpogenic germination in Sclerotinia sclerotiorum

The effects of herbicides and mycoparasites at different moisture levels on carpogenic germination in Sclerotinia sclerotiorum

Hyperparasites of Rhizoctonia solani in Dutch potato fields

Biological control of the soil-borne fungal pathogen Sclerotinia sclerotiorum –– a review

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