scholarly journals Endophytic colonization and pest management potential of Beauveria bassiana in strawberries

2013 ◽  
Vol 3 (4) ◽  
pp. 203-211 ◽  
Author(s):  
Surendra K. Dara ◽  
Sudha R. Dara ◽  
Sumanth S. Dara
Keyword(s):  
Pest Management ◽  
Beauveria Bassiana ◽  
Endophytic Colonization

scholarly journals Environmental Tolerance of Entomopathogenic Fungi: A New Strain of Cordyceps javanica Isolated from a Whitefly Epizootic Versus Commercial Fungal Strains

Insects ◽  
2020 ◽  
Vol 11 (10) ◽  
pp. 711
Author(s):  
Shaohui Wu ◽  
Michael D. Toews ◽  
Camila Oliveira-Hofman ◽  
Robert W. Behle ◽  
Alvin M. Simmons ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Pest Management ◽  
Beauveria Bassiana ◽  
Entomopathogenic Fungi ◽  
Galleria Mellonella ◽  
Uv Light ◽  
Variable Temperature ◽  
Environmental Tolerance ◽  
Southern Georgia ◽  
Lower Tolerance

A new strain of Cordyceps javanica (wf GA17) was observed causing widespread epizootics among whiteflies in Southern Georgia in 2017. The tolerance of conidia to environmental factors including variable temperature and ultraviolet (UV) light was compared between this strain and three commercial strains of entomopathogenic fungi (Metarhizium brunneum F52, Cordyceps fumosorosea Apopka97, and Beauveria bassiana GHA). Under 10–30 °C, C. javanica wf GA17 responded similarly to other fungi, with the highest virulence against Galleria mellonella at 25 °C, followed by 20, 30, and 15 °C; lowest virulence was observed at 10 °C. At 35 °C and 40 °C, C. javanica wf GA17 had lower tolerance than M. brunneum F52 and B. bassiana GHA, but was superior to C. fumosorosea Apopka97 in conidia viability and post-treatment virulence. After exposure to −20 °C for 56 d, C. javanica wf GA17 exhibited lower germination than M. brunneum F52 and lower virulence than M. brunneum F52 and B. bassiana GHA, but higher germination and virulence than C. fumosorosea Apopka97. Following exposure to strong UV light, viability and virulence of all fungi were reduced with increasing exposure periods. Increased environmental tolerance of C. javanica wf GA17 over C. fumosorosea Apopka97 suggests that the new strain could have applicability for commercial pest management.

Endophytic colonization of white jute (Corchorus capsularis) plants by different Beauveria bassiana strains for managing stem weevil (Apion corchori)

2012 ◽  
Vol 41 (1) ◽  
pp. 17-21 ◽  
Author(s):  
Chinmay Biswas ◽  
Piyali Dey ◽  
Subrata Satpathy ◽  
Pratik Satya ◽  
B. S. Mahapatra
Keyword(s):  
Beauveria Bassiana ◽  
Endophytic Colonization ◽  
Corchorus Capsularis

Efficacy of a Fungal Biopesticide for Bed Bug Management Is Influenced by the Toxicity and Associated Behavioral Avoidance of Harborages on Insecticide-Impregnated Box Spring Covers

2020 ◽  
Vol 113 (6) ◽  
pp. 2850-2857
Author(s):  
Ikkei Shikano
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Beauveria Bassiana ◽  
Avoidance Behavior ◽  
Combined Treatment ◽  
Effective Control ◽  
Bed Bugs ◽  
Bed Bug ◽  
Continuous Contact ◽  
Behavioral Avoidance

Abstract Bed bugs spend most of their lives hiding in harborages, usually in the seams of mattresses and box springs and in crevices of bed frames. For insecticidal products that target these shelters, the repellency of the products for bed bugs may influence their duration of contact. Bed bugs are known to avoid contacting surfaces treated with certain insecticides. The fungal biopesticide Aprehend contains spores of the entomopathogen, Beauveria bassiana. It is sprayed around bed frames, box springs, and furniture where bed bugs are likely to walk, which includes potential shelters. Here, I investigated the influence of a permethrin-impregnated cover, ActiveGuard, on bed bug sheltering behavior and the effectiveness of combining ActiveGuard with Aprehend. Bed bugs avoided harboring in a shelter constructed with ActiveGuard compared to a nontoxic encasement-type cover. This avoidance behavior reduced mortality induced by ActiveGuard shelters compared to forced continuous contact on the ActiveGuard cover. However, while bed bugs also avoided Aprehend-treated ActiveGuard shelters, the combined treatment induced almost complete mortality and more quickly than Aprehend-treated shelters made of the encasement-type cover. This suggests compatibility between the two integrated pest management (IPM) tools even though the bed bug’s avoidance behavior would suggest otherwise. Since Aprehend is highly effective against pyrethroid-resistant bed bugs, its use would provide more effective control where bed bug populations are more resistant to the permethrin-impregnated cover.

scholarly journals Incorporating Beauveria bassiana Into an Integrated Pest Management Plan for Coffee Berry Borer in Hawaii

2020 ◽  
Vol 4 ◽  
Author(s):  
Robert G. Hollingsworth ◽  
Luis F. Aristizábal ◽  
Suzanne Shriner ◽  
Gabriel M. Mascarin ◽  
Rafael de Andrade Moral ◽  
...  
Keyword(s):  
Integrated Pest Management ◽  
Pest Management ◽  
Beauveria Bassiana ◽  
Management Plan ◽  
Coffee Berry ◽  
Coffee Berry Borer

scholarly journals Endophytic colonization of tomato plants by Beauveria bassiana Vuillemin (Ascomycota: Hypocreales) and leaf damage in Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) larvae

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Joelle Toffa ◽  
Yeyinou Laura Estelle Loko ◽  
Ouorou Kobi Douro Kpindou ◽  
Karim Zanzana ◽  
Josky Adikpeto ◽  
...  
Keyword(s):  
Beauveria Bassiana ◽  
Helicoverpa Armigera ◽  
Tomato Fruit ◽  
Leaf Damage ◽  
Control Group ◽  
Main Body ◽  
Conidial Suspension ◽  
Endophytic Colonization ◽  
Leaf Consumption ◽  
Helicoverpa Armígera

Abstract Background The endophytic capacity of Beauveria bassiana Vuillemin isolates in 2 tomato varieties and their effects on damage and survival of the tomato fruit worm Helicoverpa armigera Hubner larvae were studied. The bioassays consisted of sowing seeds of 2 tomato cultivars soaked for 24 h in B. bassiana conidial suspension at the concentration of 1 × 107 and 1 × 109 conidia/ml for the isolates Bb 115 and Bb 11, respectively. Ten leaf, stem, and root segments were cut and incubated for assessing the endophytic growth of the fungus. Percentage of leaf consumption and pathogenicity of B. bassiana on H. armigera larvae were estimated. Main body The fungus B. bassiana developed endophytically in the 2 tomato varieties and was detected in tomato leaf, stem, and root. However, higher colonization rates were observed in roots than in leaves and stems. The B. bassiana isolate Bb 115 had a greater negative effect on the mean survival times (MSTs) of H. armigera larvae and on leaf consumption for local and improved tomato varieties. In fact, the lowest MSTs were recorded at the concentration of 1 × 109conidia/ml for Bb 115 in 1.5 ± 0.2 days, i.e., 7 days less than the surviving larvae of the control group, which MSTs were 8.4 ± 0.9 days. Consumed leaf areas by larvae averaged (89.17 ± 10.33 mm2) at a fungal concentration of 1 × 109conidia/ml for Bb115. It was the best compared to that of untreated control (820.3 ± 92.77 mm2). The colonization rate of the different plant parts increased with conidia concentration in both tomatoes varieties. Conclusion This study reported the effect of endophytic colonization of tomato by B. bassiana on the survival of H. armigera larvae and showed that the isolates Bb 115 and Bb 11 could be considered as useful microorganisms for the integrated control of H. armigera.

scholarly journals Mixtures between Beauveria bassiana and potassium silicate to manage thrips in tomato plants for industrial processing

2020 ◽  
Vol 38 (4) ◽  
pp. 415-420
Author(s):  
Alexandre Igor A Pereira ◽  
Cide M da Silva ◽  
Carmen RS Curvêlo ◽  
Nadson de C Pontes ◽  
Jardel L Pereira ◽  
...  
Keyword(s):  
Pest Management ◽  
Beauveria Bassiana ◽  
Management Practices ◽  
Integrate Pest Management ◽  
Potassium Silicate ◽  
Chemical Insecticide ◽  
Tomato Plants ◽  
Industrial Processing ◽  
Wilt Virus ◽  
Solanaceae Family

ABSTRACT Thysanoptera species can transmit virus to Solanaceae family vegetables, including tomato plants for industrial processing, causing the disease known as Tomato Spotted Wilt Virus (TSWV). Thrips resistance to insecticides indicate the urgent need of techniques adequate for Integrate Pest Management practices. The objective was to evaluate the control efficiency (CE%) against Frankliniella schultzei (Thysanoptera: Thripidae) of the fungus Beauveria bassiana (Bb), the resistance inducer potassium silicate (KSil) and the chemical insecticide profenophos + cypermethrin (PC) isolated, or in binary mixtures. The treatments were foliar spraying on tomato plants with Bb (T1), KSil (T2) and PC (T3) isolated or in mixtures of Bb+KSil (T4), PC+KSil (T5) and Bb+PC (T6). Thrips were sampled with white plastic trays at 0, 1, 7, 14 and 21 days after application (daa). The CE% of each product (isolated or in mixtures) differed at all time intervals. The Bb+KSil treatment had highest CE% from 24 hours of application, until the end of the experiment, ranging from 95% (1 daa) to 41.5% (21 daa). The CE% decreased in all treatments with a quadratic curve behavior, throughout time. PC insecticide, isolated, showed a decreased CE% through a linear regression. Grouping analyzes indicated the Bb+KSil effect was more dissimilar than the other evaluated treatments. Synergism between Bb and KSil, in mixture, indicate its potential for Integrated Pest Management programs of F. schultzei in tomato plants for industrial processing.

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