Entomopathogenic fungi of Eurygaster integriceps Puton (Hemiptera: Scutelleridae): collection and characterization for development

Parker, Bruce L.; Skinner, Margaret; Costa, Scott D.; Gouli, Svetlana Y.; Reid, William; Bouhssini, Mustapha El

doi:10.1016/s1049-9644(03)00017-3

Cited by 62 publications

(46 citation statements)

References 21 publications

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“…Inoculum concentration is an important factor on the pathogenicity of the entomopathogenic fungi. Parker et al (2003) applied I. farinosa to E. integriceps on pine litter and wheat plants at concentrations of 1 9 10 6 , 1 9 10 7 , and 1 9 10 8 conidia ml -1 . The percent mortality was approximately 30 at 1 9 10 6 conidial concentration (ml -1 ), at 10th day of inoculation.…”

Section: Discussionmentioning

confidence: 99%

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Laboratory evaluation of the effectiveness of the entomopathogen; Isaria farinosa, on citrus mealybug, Planococcus citri

et al. 2011

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Citrus mealybug Planococcus citri (Risso) (Hemiptera: Pseudococcidae) is one of the main pests on citrus trees. Biological control of the pest is based on the release of hymenopterous parasitoids and coccinellid predators at present. The effectiveness of entomopathogen fungus Isaria farinosa (Holmsk.) Fries ([Sordariomycetes: Hypocreales] (Syn: Paecilomyces farinosus), as an alternative biological control agent on citrus mealybug, was investigated using four different inoculum densities and different relative humidities (RH). The entomopathogen caused 89.39% mortality in ovisacs, 84.07% mortality in second larval stage, 84.53% mortality in adult females, and 78.71% mortality in first larval stage at 95% RH and at 1 9 10 8 conidia ml -1 inoculum concentration. Percent mortalities were between 50 and 60 in ovisac, first and second larval stage at 95% RH and at 1 9 10 7 conidia ml -1 . Percent mortality was decreased parallel to the decrease in humidity level and inoculum densities; however, the fungus caused significant infection in 70% and 80% RH. These results demonstrated that the effectiveness of the entomopathogen is promising for biocontrol of citrus mealybug.

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Section: Discussionmentioning

confidence: 99%

“…I. farinosa was isolated from Saissetia coffeae in Sri Lanka (Evans and Hywel-Jones 1997). The pathogenic activity of the fungus was studied on sunn pest (Eurygaster integriceps) (Parker et al 2003), Ips sexdentatus (Draganova et al 2006) and pine bark-weevil (Pissodes punctatus) (Yang et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Laboratory evaluation of the effectiveness of the entomopathogen; Isaria farinosa, on citrus mealybug, Planococcus citri

et al. 2011

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“…There are long term studies focussed on integrated pest control (El Bouhssini et al, 2002;Parker et al, 2003) and on the effects on protein alteration caused by the salivary residues left in the kernels by the insects' feeding (Kretovich, 1944;Karababa and Ozan, 1998;Sivri et al, 1998Sivri et al, , 1999Sivri et al, , 2004Hariri et al, 2000;Aja et al, 2004;Caballero, 2005;Ozderen et al, 2008;Werteker and Kramreither, 2008). Effects on the alteration of starch granules have been reported for Nysius spp.…”

Section: Introductionmentioning

confidence: 99%

Prolamin proteins alteration in durum wheat by species of the genus Eurygaster and Aelia (Insecta, Hemiptera)

Salis

Goula

Valero³

et al. 2010

Span. j. agric. res.

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Wheat bugs are widely distributed in various areas of Europe, Asia and North Africa. Species belonging to the genus Eurygaster and Aelia pierce wheat kernels affecting protein quality. The effects of these insects' feeding activity have been studied mainly in bread wheat (Triticum aestivum L.). This study provides information on the degradation of prolamin proteins (glutenins and gliadins) of bug-damaged durum wheat (Triticum turgidum L. var durum) in six cultivars grown in Sardinia (Italy). Samples of whole flour mixture of 70% sound wheat and 30% damaged wheat were hydrated and incubated at two temperatures (45 and 4°C), for different periods of time (0, 1 and 3 h). Glutenin and gliadin content was analysed using free zone capillary electrophoresis. The presence of bug-damaged kernels had influence on the quality of durum wheat proteins. Glutenins were rapidly degraded independently to incubation temperature. Gliadin degradation, however, took place with dependence on temperature and incubation time. Therefore glutenin degradation was possibly not due solely to the activity of proteolytic enzymes but also to some other as yet unknown factor linked to wheat bugs' feeding activity.Additional key words: gliadin, glutenin, protein quality, Triticum turgidum L. var durum, wheat bugs. ResumenAlteración de las prolaminas en trigo duro por especies del género Eurygaster y Aelia (Insecta, Hemiptera)Los chinches de los cereales tienen una amplia distribución en diversas áreas de Europa, Asia y Norte de África. Especies pertenecientes a los géneros Eurygaster y Aelia se alimentan picando los granos de trigo afectando a la calidad de las proteínas. Esta alteración se ha estudiado principalmente en trigo blando (Triticum aestivum L.). El presente estudio aporta información sobre la degradación de las prolaminas (gluteninas y gliadinas) del trigo duro (Triticum turgidum L. var durum) dañado por los chinches de los cereales en seis variedades cultivadas en Cerdeña (Italia). Muestras de harina integral, con un 70% de trigo sano y un 30% de trigo dañado se incubaron a dos temperaturas (45 y 4°C), y a diferentes tiempos (0, 1 y 3 h). El contenido de las gluteninas y gliadinas se analizó mediante electroforesis capilar zonal. La presencia de granos picados por los chinches de los cereales influyó en la calidad de las proteínas del trigo duro. Las gluteninas se degradaron rápidamente, con independencia de la temperatura de incubación. En cambio, la degradación de las gliadinas resultó ser dependiente de la temperatura y del tiempo. Ante estos resultados, cabe plantearse la posibilidad de que la degradación de las gluteninas no sea debida sólo a la actividad de las proteasas sino también a algún otro factor ligado a la actividad alimenticia de los chinches de los cereales, todavía por determinar.Palabras clave adicionales: calidad de las proteínas, chinches de los cereales, gliadinas, gluteninas, Triticum turgidum L. var durum.

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“…As a result, in recent years the focus is shifted towards the biological control of insect pests. Previous research by various workers suggested the possibility of success using Beauveria (Parker et al 2003;Aquino de Mero et al 2005). The mycopesticides are valuable tools for integrated pest management strategies.…”

Section: Introductionmentioning

confidence: 99%

Effect of talc-formulated entomopathogenic fungus Beauveria against leaffolder (Cnaphalocrosis medinalis) in rice

Sivasundaram

Rajendran

Muthumeena

et al. 2007

World J Microbiol Biotechnol

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Thirteen Beauveria strains were isolated from the soil and infected insects. Among the various isolates, B 2 isolate (Arachalore) showed a higher percentage of mortality against C. medinalis (73.3%) under in vitro conditions. Conidial concentration of 1 9 10 8 of the B2 strain registered maximum mortality of 76.7%. The least LT 50 value of 4.4 days was registered in B2 isolate with the spore concentration of 1 9 10 8 and the LC 50 value was 3.4 9 10 4 . Beauveria strains altered the feeding behavior of C. medinalis, reduced the pupal weight, prolonged the pupation period, malformed the pupa and adult under in vitro. The efficacy of the talc-based bioformulation of Beauveria (B2) strain was tested as seed treatment + seedling dip + soil application + foliar spray against rice leaffolder under in vitro and greenhouse conditions. The percentage damage was significantly less (5.5) in B2 as compared to untreated healthy control (25.8). In addition, the same treatment increased the activities of defenserelated enzymes, namely peroxidase, polyphenol oxidase, phenylalanine ammonia-lyase, chitinase, and phenolics in rice.

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Entomopathogenic fungi of Eurygaster integriceps Puton (Hemiptera: Scutelleridae): collection and characterization for development

Cited by 62 publications

References 21 publications

Laboratory evaluation of the effectiveness of the entomopathogen; Isaria farinosa, on citrus mealybug, Planococcus citri

Laboratory evaluation of the effectiveness of the entomopathogen; Isaria farinosa, on citrus mealybug, Planococcus citri

Prolamin proteins alteration in durum wheat by species of the genus Eurygaster and Aelia (Insecta, Hemiptera)

Effect of talc-formulated entomopathogenic fungus Beauveria against leaffolder (Cnaphalocrosis medinalis) in rice

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