European Leucoma salicis NPV is closely related to North American Orgyia pseudotsugata MNPV

Jakubowska, Agata; Oers, Monique M. van; Cory, Jenny S.; Ziemnicka, J.; Vlak, Just M.

doi:10.1016/j.jip.2004.12.002

Cited by 14 publications

(9 citation statements)

References 38 publications

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“…Since variation in the infectivity of viruses for heterologous hosts can result in duplicate naming of an identical virus (Harrison and Bonning 1999;Jakubowska et al 2005), genotypic identification is necessary before a new virus can be considered for practical use as a biopesticide. Identification by means of restriction endonuclease (REN) analysis has been used to detect variants Erlandson et al 2007) and to distinguish NPVs originating from different insects (Murillo et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Biological activity and identification of nucleopolyhedroviruses isolated from Mythimna separata and Spodoptera litura in Japan

et al. 2009

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We compared the infectivity of two nucleopolyhedroviruses (NPVs), MyseNPV G isolated from Mythimna separata (Walker) (Lepidoptera: Noctuidae) and SpltNPV S isolated from Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae). MyseNPV G was more pathogenic against M. separata than against S. litura. Although SpltNPV S was more pathogenic than MyseNPV G against S. litura, it did not infect M. separata. Restriction endonuclease (REN) analysis of viral genomic DNA revealed that the two NPVs have quite different REN profiles. Based on nucleotide sequences of the coding regions of polyhedrin, lef-8 and lef-9, SpltNPV S was closely related to other SpltNPV isolates, whereas MyseNPV G appeared to belong to the Mamestra NPV group, and was distinct from a Chinese isolate of Leucania (=Mythimna) separata NPV. The potential of MyseNPV G and SpltNPV S to control pest insects is discussed.

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Section: Introductionmentioning

confidence: 99%

Biological activity and identification of nucleopolyhedroviruses isolated from Mythimna separata and Spodoptera litura in Japan

et al. 2009

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“…Various pest species can cause severe damage to poplar plantations (de Tillesse et al 2007) and considerable effort has been made to study defoliators such as Chrysomela spp. (Gruppe et al 1999;Brü ckmann et al 2002;Pauchet et al 2009) and Leucoma salicis (Jakubowska et al 2005). However, there is a lack of information concerning wood borers, particularly the hornet clearwing moth, Sesia apiformis (Clerck) (Lepidoptera, Sesiidae).…”

Section: Introductionmentioning

confidence: 99%

Patterns and monitoring of Sesia apiformis infestations in poplar plantations at different spatial scales

Martín‐García¹,

Jactel²

2011

Journal of Applied Entomology

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Poplar plantations are expanding worldwide but little is known about the hornet clearwing moth, Sesia apiformis, one of their most severe pests. Thirty‐two poplar plantations of I‐214 clone were sampled in Spain, according to a factorial design combining stand age, site condition and understorey management to investigate the main drivers of S. apiformis habitat selection at both tree and stand level. In each plantation, one pheromone trap was activated during the flight season to test the correlation between captures and percentage of attacked trees. The proportion of other poplar forests in surrounding landscapes was calculated and used as a covariate in predictive models of trap catches. There were significantly more attacked trees in older stands. In young stands, the percentage of infested trees increased with the percentage cover of understorey vegetation. There was no significant effect of site quality on the rate of infestation and no difference in tree height, diameter or crown condition between attacked and un‐attacked trees within each stand, suggesting that S. apiformis could behave as primary pest. We hypothesized that the critical stage in the life cycle of the moth was the first instar larvae, which may benefit from protection of deep bark cracks in older stands and understorey vegetation in younger stands. We observed a positive correlation between trap capture and percentage of attacked trees in a radius of 100 m around the trap. The regression of trap catches against percentage of attacked trees was improved when the area of other poplar plantations within a distance of 600 m was incorporated in the model. This suggests that surrounding poplar stands may act as sources of immigrating moths in monitored stands. Our findings confirm that S. apiformis should be considered as a potential threat to poplar plantations and that pheromone trapping provides a suitable monitoring tool.

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“…Although true cross-infection may occur during a cross-inoculation (El-Salamouny et al, 2003;Jakubowska et al, 2005), numerous reports have also shown that cross-inoculation testing with heterologous baculovirus isolates is the best stressor for production of a different virus progeny (i.e., the host's own virus) (Longworth and Cunningham, 1968;Maleki-Milani, 1978;Jurkovíčová, 1979;McKinley et al, 1981;Cory et al, 2000). While latent viruses have been studied in several insects, nothing is known about their occurrence in S. litura, although it is an important pest species in Japan.…”

Section: Introductionmentioning

confidence: 99%

Prevalence of latent virus in Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae) and its activation by a heterologous virus

Kouassi

Tsuda

Goto

et al. 2009

Appl. Entomol. Zool.

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Nested PCR amplification of a Spodoptera litura nucleopolyhedrovirus (SpltNPV) lef-8 gene fragment was performed on egg masses and larvae of S. litura, and resulted in detection of a latent SpltNPV in 20.0% of "healthy" laboratory stock samples, and in 22.6% of samples collected at different periods and in remote places in Kagoshima Prefecture. The PCR product sequences showed 99% similarity to the published lef-8 sequence of SpltNPV, confirming that the amplification products were derived from SpltNPV. Further, cross-inoculation of laboratory stock S. litura larvae with Mythimna separata NPV (MyseNPV) activated the latent virus, which provoked a change in the virulence of MyseNPV samples collected from cadavers of S. litura. Our data suggest that caution should be taken when using S. litura as a host to produce heterologous NPVs.

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European Leucoma salicis NPV is closely related to North American Orgyia pseudotsugata MNPV

Cited by 14 publications

References 38 publications

Biological activity and identification of nucleopolyhedroviruses isolated from Mythimna separata and Spodoptera litura in Japan

Biological activity and identification of nucleopolyhedroviruses isolated from Mythimna separata and Spodoptera litura in Japan

Patterns and monitoring of Sesia apiformis infestations in poplar plantations at different spatial scales

Prevalence of latent virus in Spodoptera litura (Fabricius) (Lepidoptera: Noctuidae) and its activation by a heterologous virus

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