Biotic and abiotic factors affecting stability of Beauveria bassiana conidia in soil

Lingg, A. J.; Donaldson, M.D.

doi:10.1016/0022-2011(81)90122-1

Cited by 140 publications

(79 citation statements)

References 18 publications

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“…Lingg and Donaldson (1981) found that survival of B. bassiana conidia is dependent on temperature and soil water content. Raid and Cherry (1992) reported that M. anisopliae conidia were pathogenic on the sugar cane pest Lygirus subtropicus under a wide range of soil temperatures and moistures.…”

Section: Discussionmentioning

confidence: 99%

Entomopathogenic fungi in soils from Alicante province [Spain]

Asensio

Carbonell

López-Jiménez³

et al. 2003

Span. j. agric. res.

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We have used Galleria mellonella (Linnaeus, 1758) larvae as a bait for detecting insect pathogens in soils from Alicante(SE Spain). Soil from 61 sites was collected including agricultural fields, forests and a mediterranean shrub(Nerium oleander L.) growing under natural or garden environments. The most frequently insect pathogens found werefungi (32.8% soils), being Beauveria bassiana (Bals.) Vuill (21% soils) the species most abundant. Metarhiziumanisopliae (Metschn.) Sorok (6.4%) and Lecanicillium lecanii (Zimm.) Gams [= Verticillium lecanii Zimm.] (4.8%)were less frequent. B. bassiana also scored the highest infection percentage in a single soil sample (ca. 90% of insectsinfected), and was also the most frequent (77.8%) entomopathogenic fungus detected in soils under N. oleander.

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Section: Discussionmentioning

confidence: 99%

Entomopathogenic fungi in soils from Alicante province [Spain]

Asensio

Carbonell

López-Jiménez³

et al. 2003

Span. j. agric. res.

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“…The low endophytic colonization of the fungus in non-sterile soil suggests that biotic factors may have a stronger influence on the fungus than abiotic factors. Fungistatic effects of soil (Lingg and Donaldson 1981) and soil antagonism (Pereira et al 1993) have been reported for B. bassiana. In the non-sterile soil, biotic antagonism may have inhibited germination of B. bassiana conidia or prevented the fungus from penetrating roots.…”

Section: Growth Medium Plant Parts Colonized (%)mentioning

confidence: 98%

Effect of inoculation method and plant growth medium on endophytic colonization of sorghum by the entomopathogenic fungus Beauveria bassiana

2009

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A study was conducted to determine the effect of inoculation method and plant growth medium on colonization of sorghum by an endophytic Beauveria bassiana. Colonization of leaves, stems, and roots by B. bassiana was assessed 20-days after application of the fungus. Although B. bassiana established as an endophyte in sorghum leaves, stems, and roots regardless of inoculation method (leaf, seed, or soil inoculation), plant growth medium (sterile soil, non-sterile soil, or vermiculite) apparently influenced colonization rates. Seed inoculation with conidia caused no stem or leaf colonization by the fungus in non-sterile soil but did result in substantial endophytic colonization in vermiculite and sterile soil. Leaf inoculation did not result in root colonization, regardless of plant growth medium. Endophytic colonization was greater in leaves and stems than roots. Endophytic colonization by B. bassiana had no adverse effects on the growth of sorghum plants. Leaf inoculation with a conidial suspension proved to be the best method to introduce B. bassiana into sorghum leaves for plants growing in either sterile or nonsterile soil. Further research should focus on the virulence of endophytic B. bassiana against sorghum stem borers.

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“…Biotic factors suggested to explain this increase in inoculum in reduced tillage systems include soil capacity to retain water, increased organic matter (conservation-till system), and lower soil temperatures (Vieira, 1981;Bing and Lewis, 1992). Reduction in B. bassiana inoculum in intensely tilled systems has been attributed to the incorporation of carbon and nitrogen and the subsequent stimulation of soil microflora (Lingg and Donaldson, 1981). The objectives of these experiments were to study the movement of soil-borne B. bassiana to the corn surface during a rain event and determine the impact of crop residue level on fungal transport.…”

Section: Introductionmentioning

confidence: 99%