Jörg T Wennmann

Jörg T Wennmann
Julius Kühn-Institut · Institute for Biological Control

PhD

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35
Publications
4,501
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260
Citations

Publications

Publications (35)
Article
Full-text available
Background The baculovirus Spodoptera littoralis nucleopolyhedrovirus (SpliNPV) is an entomopathogenic virus utilized as a biological control agent of the Egyptian cotton leaf worm, Spodoptera littoralis. Several studies have focused on the identification of different SpliNPV isolates from a biological and molecular point of view, but few of them c...
Article
Full-text available
The olive leaf moth (jasmine moth), Palpita vitrealis (Lepidoptera: Crambidae), is an important insect pest of olives in several Mediterranean countries. A new alphabaculovirus was isolated from diseased larvae of P. vitrealis in Egypt, first in Giza in spring 2005 and again in Marsa Matrouh in 2019.The larvae exhibited typical symptoms of a baculo...
Book
Full-text available
Future agriculture faces challenges to meet the accelerated climatic changes and to meet society's needs for a secure food supply through sustainable production. This report describes measures in the range of cultivation technology, cultivation management and breeding, which face these challenges, and it identifies synergistic potentials of the use...
Article
Full-text available
Future agriculture faces challenges to meet the accelerated climatic changes and to meet society's needs for a secure food supply through sustainable production. This report describes measures in the range of cultivation technology, cultivation management and breeding, which face these challenges, and it identifies synergistic potentials of the use...
Article
Full-text available
The fall armyworm (FAW), Spodoptera frugiperda, is a native pest species in the Western hemisphere. Since it was first reported in Africa in 2016, FAW has spread throughout the African continent and is now also present in several countries in Asia as well as Australia. The invasion of FAW in these areas has led to a high yield reduction in crops, l...
Article
Full-text available
We report the entire genome sequence of an isolate of Spodoptera frugi-perda multiple nucleopolyhedrovirus from Nigeria, West Africa. The genome is 132,710 bp long and contains 144 open reading frames. The GC content is 40.3% and, based on bac-ulovirus species demarcation criteria, the isolate belongs to the species Spodoptera frugiperda multiple n...
Article
Full-text available
The mechanisms by which transposable elements (TEs) can be horizontally transferred between animals are unknown, but viruses are possible candidate vectors. Here, we surveyed the presence of host-derived TEs in viral genomes in 35 deep sequencing datasets produced from eleven host-virus systems, encompassing nine arthropod host species (five lepido...
Article
Full-text available
The mulberry silkworm, Bombyx mori (L.), is a model organism of lepidopteran insects with high economic importance. The viral diseases of the silkworm caused by Bombyx mori nucle- opolyhedrovirus (BmNPV) and Bombyx mori bidensovirus (BmBDV) inflict huge economic losses and significantly impact the sericulture industry of India and other countries....
Article
The Cydia pomonella granulovirus (CpGV) has been used as a biological control agent of codling moth (Cydia pomonella), a severe global pest on pome fruit. Despite the economic importance, our knowledge of its molecular biology is still limited and a detailed picture of its gene expression is still missing. Here, we sequenced the transcriptome of co...
Article
The baculovirus Cydia pomonella granulovirus (CpGV) is a biocontrol agent used worldwide against the codling moth (CM), Cydia pomonella L., a severe pest in organic and integrated pome fruit production. Its successful application is increasingly challenged by the occurrence of CM populations resistant to commercial CpGV products. Whereas three type...
Article
Full-text available
Genetic diversity of viruses is driven by genomic mutations and selection through its host, resulting in differences in virulence as well as host responses. For baculoviruses, which are naturally occurring pathogens of insects and which are frequently sprayed on hundred thousands to millions of hectares as biocontrol agents of insect pests, the phe...
Article
A microsporidium showing morphological characteristics typical of a Tubulinosema species was discovered in Drosophila suzukii. All developmental stages were diplokaryotic and grew in direct contact with the host cell cytoplasm. Spores from fresh preparations were ovoid to slightly pyriform and measured 4.29 ×2.47 μm in wet mount preparations. The s...
Article
Full-text available
Natural isolates of baculoviruses (as well as other dsDNA viruses) generally consist of homogenous or heterogenous populations of genotypes. The number and positions of single nucleotide polymorphisms (SNPs) from sequencing data are often used as suitable markers to study their genotypic composition. Identifying and assigning the specificities and...
Article
CpGV is a highly virulent pathogen of the codling moth (CM). It is registered and widely applied as a biocontrol agent in nearly all apple-growing countries worldwide. The emergence of CpGV resistance and the increasing lack of chemical control options require improvements to current control strategies. Natural CpGV isolates, as well as resistance-...
Article
The co-evolution between baculoviruses and their insect hosts results in selection of virus populations. To explore this phenomenon at the molecular level, seven natural isolates of Cydia pomonella granulovirus (CpGV) collected from orchards in northwest China were studied using Illumina next generation sequencing (NGS). A total of 540 genome posit...
Article
Cydia pomonella granulovirus (CpGV) is a cornerstone of codling moth ( Cydia pomonella ) control in integrated and organic pome fruit production, though different types of resistance to CpGV products have been recorded in codling moth field populations in Europe for several years. Recently, a novel baculovirus named Cryptophlebia peltastica nucleop...
Article
Full-text available
Current knowledge of the field resistance of codling moth (CM, Cydia pomonella, L) against Cydia pomonella granulovirus (CpGV) is based mainly on the interaction between the Mexican isolate CpGV-M and CpRR1, a genetically homogeneous CM inbreed line carrying type I resistance. The resistance level of laboratory-reared CpRR1 to CpGV-M was recently f...
Article
Full-text available
Virus infections of insects can easily stay undetected, neither showing typical signs of a disease, nor being lethal. Such a stable and most of the time covert infection with Phthorimaea operculella granulovirus (PhopGV) was detected in a Phthorimaea operculella laboratory colony, which originated from Italy (Phop-IT). This covert virus (named Phop...
Article
Twelve complete genome sequences of Phthorimaea operculella granulovirus (PhopGV) isolates from four different continents (Africa, South America, Asia and Europe) were analysed after Illumina next-generation sequencing (NGS). The isolates have a circular double-stranded DNA genome that is 118 355 to 119 177 bp in length and all of them encode 130 o...
Article
Phthorimaea operculella granulovirus (PhopGV) is infectious for larvae of different Gelechiidae insect species, including Tuta absoluta and Phthorimaea operculella. As these are major economic pests in North and sub‐Saharan Africa as well as in the Mediterranean area, the development of locally suitable biocontrol agents is essential. We have studi...
Article
Full-text available
Kimura two-parameter nucleotide distance comparisons based on polyhedrin/granulin (polh/gran), late expression factor 8 (lef-8) and late expression factor 9 (lef-9) are a widely applied method for species demarcation for lepidopteran-specific baculoviruses. Baculoviruses are considered to belong to the same species when a pairwise distance threshol...
Article
A granulovirus (GV) that produces occlusion bodies (OBs) having an unusual morphology was found in an Adoxophyes sp. (Lepidoptera: Tortricidae) larva in a tea field in Miyazaki Prefecture, Japan. This isolate is considered to be a mutant of Adoxophyes orana granulovirus, designated AdorGV-M, because the nucleotide sequence of its genome is 99.7% id...
Article
Full-text available
The use of Cydia pomonella granulovirus (CpGV) isolates as biological control agents of codling moth (CM) larvae is important in organic and integrated pome fruit production worldwide. The commercially available isolates CpGV-0006, CpGV-R5, and CpGV-V15 have been selected for the control of CpGV resistant CM populations in Europe. In infection expe...
Article
Full-text available
Six complete genome sequences of Cydia pomonella granulovirus (CpGV) isolates from Mexico (CpGV-M and CpGV-M1), England (CpGV-E2), Iran (CpGV-I07 and CpGV-I12), and Canada (CpGV-S) were aligned and analyzed for genetic diversity and evolutionary processes. The selected CpGV isolates represented recently identified phylogenetic lineages of CpGV, nam...
Presentation
Seven new CpGV isolates were collected in different regions in China. Their virulence was determined in three different susceptible and resistant CM populations with a discriminating concentration of 58000 OBs ml-1. Some of these isolates were breaking both type I and type II resistance. All seven isolates were Illumina sequenced and assembled usin...
Article
Mixed infections of insect larvae with different baculoviruses are occasionally found. They are of interest from an evolutionary as well as from a practical point of view when baculoviruses are applied as biocontrol agents. Here, we report mixed infection studies of neonate larvae of the common cutworm, Agrotis segetum, with two baculoviruses, Agro...
Article
The genome of Agrotis segetum nucleopolyhedrovirus B (AgseNPV-B) was completely sequenced and compared with whole genome sequences of the Agrotis segetum nucleopolyhedrovirus A (AgseNPV-A) and Agrotis ipsilon nucleopolyhedrovirus (AgipNPV). The AgseNPV-B genome is 148,981 bp in length and encodes 150 putative open reading frames. AgseNPV-B contains...
Article
Full-text available
At least four distinct baculoviruses, namely the Agrotis segetum nucleopolyhedrovirus A (AgseNPV-A), the Agrotis segetum nucleopolyhedrovirus B (AgseNPV-B), the Agrotis ipsilon nucleopolyhedrovirus (AgipNPV) and the Agrotis segetum granulovirus (AgseGV) have been isolated from larval stages (cutworms) of the species Agrotis segetum and A. ipsilon (...
Article
The box tree moth Cydalima perspectalis is an invasive insect pest in many European countries. Caterpillars of this species cause widespread damage on box tree plants. In this study, a new opportunity to control this pest with the baculovirus Anagrapha falcifera nucleopolyhedrovirus (AnfaNPV) was investigated. Initially, AnfaNPV was identified to i...
Data
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Data
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Data
##Assembly-Data-START## Assembly Method :: Geneious Pro v. 5.6.2 Sequencing Technology :: Sanger dideoxy sequencing ##Assembly-Data-END##
Chapter
Viruses are a highly diverse group of pathogens, which are widespread among insects. Many viruses are of importance in the natural regulation of insect populations, some of them, such as baculoviruses, are used as biological control agents. During the last two decades, the scope of methods for analyzing insect viruses has expanded from disease diag...
Article
Full-text available
Group living in spiders is characterised by two principle modes, the cooperative social mode and the colonial non-cooperative mode. Kin-relationships due to reduced dispersal determine population genetic structure in social spiders, but the dispersal mechanisms underlying group structure remain poorly understood in colonial spiders. Assuming simila...

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