Horizontal transmission and effect of the temperature in pathogenicity of Beauveria bassiana against Diatraea saccharalis (Lepidoptera: Crambidae)

Svedese, Virgínia Michelle; Lima, Elza Áurea de Luna Alves; Porto, Ana Lúcia Figueiredo

doi:10.1590/s1516-89132013000300009

Cited by 15 publications

(11 citation statements)

References 26 publications

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“…The average daily maximum temperature (± 1 standard deviation, N = 26 d) was 33.54°C ± 0.96°C, the average daily minimum temperature was 27.87°C ± 2.35°C, and the average daily temperature was 31.09°C ± 1.26°C. While there is variation in life history responses to temperature by B. bassiana (Ekesi et al, 1999;Jackson et al, 2010;Svedese et al, 2013), I. fumosorosea (Yeo et al, 2003) and T. erecta or Z. elegans (Anonymous, 2018;Harrington, 1921;Roberts and Struckmeyer, 1939), the average minimum and daily temperatures recorded during the study were within the viability ranges for the entomopathogens used in the experiment. While the entomopathogens and plants used in the study perform well at warm temperatures, the average maximum temperature recorded during the study exceeded the optimum for I. fumosorosea by an average of 3 to 4°C (Ali et al, 2010;Yeo et al, 2003).…”

Section: Resultsmentioning

confidence: 83%

“…The average daily maximum temperature (± 1 standard deviation, N = 24 d) was 30.94°C ± 4.51°C, the average daily minimum temperature was 17.10°C ± 4.36°C, and the average daily temperature was 22.57°C ± 2.59°C. While there is significant variation in life history responses to temperature by B. bassiana (Ekesi et al, 1999;Jackson et al, 2010;Svedese et al, 2013), I. fumosorosea (Yeo et al, 2003) and T. erecta (Anonymous, 2018;Roberts and Struckmeyer, 1939), the temperatures recorded during the study were within the viability ranges for these entomopathogens and marigold species.…”

Section: Resultsmentioning

confidence: 85%

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Fungal Endophytes in Knock Out® Rose and Performance Effects of Entomopathogens on Marigold and Zinnia

Heinz

Harding

Ek-Ramos

et al. 2018

horts

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Endophytic fungi are increasingly studied for their ability to enhance plant performance in field crops, yet there are few equivalent studies in floricultural crops. Given the economic importance of these crops and pressures faced by growers to produce plants of high aesthetic quality, we surveyed the natural occurrence of foliar fungal endophytes in Knock Out Ò roses to identify candidate beneficial isolates. We also tested the effects of entomopathogenic fungal inocula on marigold and zinnia plant growth using different application approaches. Our survey of Knock Out Ò rose foliage collected from five sites within central Texas revealed at least 24 different fungal genera and 30 probable species, including some isolates providing plant stress tolerance and pathogens or antagonists of insects and nematode pests. The effects of entomopathogen inocula on plant growth varied with host plant (marigold vs. zinnia) and inoculation method (soil drench vs. seed soak). Plant responses were complex, but inoculation with Isaria fumosorosea Wize tended to have a negative effect on plant performance characteristics whereas Beauveria bassiana (Bals.-Criv.) Vuill. tended to have positive effects. When applied to marigold as a seedcoating, I. fumosorosea reduced germination, seedling fresh weight, and produced seedlings with a less compact form. By contrast, seeds inoculated with B. bassiana required less time to germinate, had higher germination rates, and increased the plant compactness. These results show that the impact of fungal entomopathogens applied as endophytes depends on the specific fungi-plant combination being examined. The effect of plant inoculation with entomopathogenic fungi within a pest management context requires further evaluation.

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Section: Resultsmentioning

confidence: 83%

Section: Resultsmentioning

confidence: 85%

Fungal Endophytes in Knock Out® Rose and Performance Effects of Entomopathogens on Marigold and Zinnia

Heinz

Harding

Ek-Ramos

et al. 2018

horts

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“…It is used to control several insect pests, such as the spider mite Tetranychus urticae Koch, 1836 (Acari: Tetranychidae), the Dactylopius coccus (Costa, 1835) (Hemiptera: Dactylopiidae) the termites Coptotermes spp. (Blattodea: Rhinotermitidae), whitefly Bemisia tabaci (Gennadius, 1889) (Hemiptera: Aleyrodidae) and the sugarcane borer Diatraea saccharalis (Fabricius, 1794) (Lepidoptera: Crambidae) (Dalzoto & Uhry, 2009;Moro et al, 2011;Svedese et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Effect of Agrochemicals Used in the Cultivation of Soybean and Irrigated Rice on Beauveria bassiana (Bals.) Vuill. and Metarhizium anisopliae (Metsch.) Sorok

Gonçalves¹,

Farias²,

Moreira³

et al. 2019

JAS

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The objective of this work was to evaluate the fungitoxic effect of the agrochemicals used in the cultivation of soybean and irrigated rice on entomopathogenic fungi such as Beauveria bassiana and Metarhizium anisopliae by means of the mycelial growth, sporulation and spore germination. The isolates were inoculated in potato-dextrose-agar (PDA) medium containing the pesticides and exposed to spraying with the products. It was observed that chlorantraniliprole produced the best results regarding and was compatible with the two methods of contact of the product with the fungi. Flubendiamide it’s very toxic to fungi, producing 100% inhibition when incorporated into the medium, when by spraying, the fungus M. anisopliae got mycelial growth. Etofenprox and thiamethoxam changed their toxity classification according to the method of contact with product, was moderately compatible to B. bassiana and compatible to M. anisopliae and spinosad showed more compatibility with M. anisopliae than B. bassiana and was classified as compatible. Among fungicides the tricyclazole was the only compatible with the fungus by the spray method. The results showed that in vitro agrochemicals such as tricyclazole, thiamethoxam, flubendiamide and etofenprox are harmful to fungi. It was found that environmental interference could minimize the effects on organisms, especially when the chemicals are applied by spraying.

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“…The fungus has a reported optimum temperature of around 25°C for hyphal growth (Hallsworth and Magan 1999;Tefera and Pringle 2003), while the highest pathogenicity against Diatraea saccharalis was reported to be at 26°C (Svedese et al 2013). Temperature, humidity and solar radiation are all important factors for fungal growth, germination and viability (Zimmermann 2007).…”

Section: Introductionmentioning

confidence: 99%

Development of thermotolerant isolates of Beauveria bassiana (Bals.-Criv.) Vuill. with ethyl methanesulfonate

Wongwanich

Cobelli

Boonchuay³

et al. 2018

Journal of Plant Protection Research

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Beauveria bassiana is an entomopathogenic fungus that is widely used in Thailand to control pest insects. However, the increasing temperature has influenced the insect control efficiency of the fungus. Therefore, determination of thermotolerant isolates of B. bassiana that can grow and remain pathogenic at higher temperatures than its current optimum temperature may be a better way to control pest insects in a high temperature environment. Three isolates of B. bassiana obtained from the Rice Department, Thailand were selected for mutagenesis using ethyl methanesulfonate (EMS) with subsequent screening at high temperatures (33 and 35°C). In addition, the recovery of fungal growth after exposure to a high temperature for a period of time (5-15 days) and then transferring to 25°C was evaluated. No isolates were found that grew at 35°C but one mutant isolate (BCNT002MT) produced larger diameter colonies and more spores than the corresponding wild type (WT) at 33°C. Growth and spore production of the BCNT002MT isolate were greater than its WT when incubated at 25°C for 14 days following exposure to 33°C for 7 days. In addition, the spore germination level (%) of BCNT002MT was significantly higher than its WT during culture at 25°C after prior exposure to 33°C for 5, 10 and 15 days. The pathogenicity against the brown planthopper, Nilaparvata lugens (Stål), of this mutant isolate was also prominent.

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Horizontal transmission and effect of the temperature in pathogenicity of Beauveria bassiana against Diatraea saccharalis (Lepidoptera: Crambidae)

Abstract: ABSTRACT

Cited by 15 publications

References 26 publications

Fungal Endophytes in Knock Out® Rose and Performance Effects of Entomopathogens on Marigold and Zinnia

Fungal Endophytes in Knock Out® Rose and Performance Effects of Entomopathogens on Marigold and Zinnia

Effect of Agrochemicals Used in the Cultivation of Soybean and Irrigated Rice on Beauveria bassiana (Bals.) Vuill. and Metarhizium anisopliae (Metsch.) Sorok

Development of thermotolerant isolates of Beauveria bassiana (Bals.-Criv.) Vuill. with ethyl methanesulfonate

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