Persistence of the nematophagous fungus<i>Paecilomyces lilacinus</i>strain 251 in soil under controlled conditions

Rumbos, Christos I.; Mendoza, A.; Sikora, R. A.; Kiewnick, Sebastian

doi:10.1080/09583150802526979

Cited by 23 publications

(15 citation statements)

References 18 publications

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“…However, soil texture did have a significant effect on its persistence; P. lilacinus persisted longer in silty loam and clay soil, with reduced persistence when sand was added to field soil. Persistence increased significantly when an organic substrate was added to pure sand (Rumbos et al 2008). …”

Section: Soil Texturementioning

confidence: 99%

Natural and released inoculum levels of entomopathogenic fungal biocontrol agents in soil in relation to risk assessment and in accordance with EU regulations

Scheepmaker

Butt

2010

Biocontrol Science and Technology

123

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Entomopathogenic fungi being developed as biological control agents (BCAs) may have the potential to spread and become established in the environment. For registration purposes, the risks concerning their persistence have to be evaluated according to EU legislation which requires the decline of BCAs to acceptable background levels unless related risks are acceptable. In order to deal with this requirement, applicants of a BCA need to give information on its persistence and natural background levels. For risk assessors and registration authorities guidance on how to evaluate data on natural background levels of indigenously occurring species (0same species as the introduced BCA) is needed. For this purpose, an overview is presented on background levels of some indigenous fungi as well as persistence data of some applied fungal BCAs. Data were restricted to commerical species. It was found that for the species Metarhizium anisopliae, Beauveria bassiana and Beauveria brongniartii natural densities were relatively low and introduced strains of these fungi decreased gradually in time. Many factors were found in the literature, such as intrinsic, edaphic, biotic, climatic, and cultural factors, that could explain this decline.

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Section: Soil Texturementioning

confidence: 99%

Natural and released inoculum levels of entomopathogenic fungal biocontrol agents in soil in relation to risk assessment and in accordance with EU regulations

Scheepmaker

Butt

2010

Biocontrol Science and Technology

123

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“…Environmental factors can play an important role in nematode biocontrol . Rumbos et al reported a negative correlation between the persistence of Pl251 in soil and the sand content of soil. Thus, sandy soils, as in this study (83.8% sand), would not be suitable for the fungus.…”

Section: Discussionmentioning

confidence: 98%

“…In studies conducted in Greece and Turkey, BioAct WG did not provide satisfactory RKN control. However, in several in vitro and pot tests, the control capability of Pl251 against several plant‐parasitic nematode species was reported . The ability of Pl251 to penetrate eggs and cuticles of sedentary stages of RKNs by mechanical and chemical mechanisms has been reported .…”

Section: Discussionmentioning

confidence: 99%

Effect of plant resistance and BioAct WG (Purpureocillium lilacinum strain 251) on Meloidogyne incognita in a tomato–cucumber rotation in a greenhouse

Giné

Sorribas

2016

Pest Management Science

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“…Purpureocillium lilacinum has relatively low persis tence in sandy soils compared to soils with less sand con tent (Rumbos et al, 2008). The low persistence in sandy soils may be due to the lack of organic substrate for fungal growth.…”

mentioning

confidence: 91%

“…The low persistence in sandy soils may be due to the lack of organic substrate for fungal growth. Indeed, the addition of organic matter to sandy soil increased persistence of the fungus (Rumbos et al, 2008). One commonly used practice for increasing or ganic matter in the soil is by planting a winter cover crop.…”

mentioning

confidence: 99%

Improving suppression of Meloidogyne spp. by Purpureocillium lilacinum strain 251

Parajuli

Kemerait

Timper

2014

Nematol

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The fungus Purpureocillium lilacinum (syn. Paecilomyces lilacinus) is marketed for control of plant-parasitic nematodes in several countries. Our objectives in this study were to determine whether suppression of Meloidogyne spp. by P. lilacinum strain 251 was affected by the crop plant and whether growing winter cover crops such as rye and crimson clover would improve suppression of M. incognita on cotton by the fungus. All experiments were conducted in a glasshouse using non-sterilised field soil. To determine the relative efficacy of P. lilacinum on cotton (Gossypium hirsutum), peanut (Arachis hypogaea) and maize (Zea mays), four concentrations of P. lilacinum (NemOut™) were applied in furrow: 336, 252, 168 and 0 g ha-1 . Although the fungus reduced numbers of eggs of Meloidogyne spp. on all crops, percentage suppression was lower on maize than on cotton and peanut at all inoculum levels of P. lilacinum. When rye and crimson clover were grown in pots for 30 days and then killed with a herbicide prior to applying P. lilacinum and M. incognita and planting cotton, the fungus failed to suppress numbers of nematode eggs when the surface residues of the cover crops were removed. However, when the residues were left on the soil surface, percentage suppression (49% for clover and 63% for rye) was greater than when the soil was left fallow (36%). The residues could have created conditions that were more conducive than bare soil to the fungus, such as lower soil temperatures and increase moisture retention.

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Persistence of the nematophagous fungusPaecilomyces lilacinusstrain 251 in soil under controlled conditions

Cited by 23 publications

References 18 publications

Natural and released inoculum levels of entomopathogenic fungal biocontrol agents in soil in relation to risk assessment and in accordance with EU regulations

Natural and released inoculum levels of entomopathogenic fungal biocontrol agents in soil in relation to risk assessment and in accordance with EU regulations

Effect of plant resistance and BioAct WG (Purpureocillium lilacinum strain 251) on Meloidogyne incognita in a tomato–cucumber rotation in a greenhouse

Improving suppression of Meloidogyne spp. by Purpureocillium lilacinum strain 251

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