80 Works

Data from: De novo transcriptome analysis of the excretory tubules of Carausius morosus (Phasmatodea) and possible functions of the midgut 'appendices'

Matan Shelomi
The Malpighian tubules are the insect excretory organs, responsible for ion and water homeostasis and elimination of nitrogenous wastes. Post-genomic assays suggest they also metabolize and detoxify xenobiotic compounds and have antimicrobial properties. The Phasmatodea have an additional, unique set of excretory organs referred to predominantly as midgut appendices. Their function and how it compares to phasmid and other insect Malpighian tubules is unknown. Hypotheses include carbonic anhydrase activity, calcium and metal cation sequestration, and...

Data from: Predators’ consumption of unpalatable prey does not vary as a function of bitter taste perception

Liisa Hämäläinen, Johanna Mappes, Rose Thorogood, Janne Valkonen, Kaijamari Karttunen, Tuuli Salmi & Hannah Rowland
Many prey species contain defensive chemicals that are described as tasting bitter. Bitter taste perception is therefore assumed to be important when predators are learning about prey defenses. However, it is not known how individuals differ in their response to bitter taste, and how this influences their foraging decisions. We conducted taste perception assays in which wild-caught great tits (Parus major) were given water with increasing concentrations of bitter-tasting chloroquine diphosphate until they showed an...

Data from: Plasticity and epistasis strongly affect bacterial fitness after losing multiple metabolic genes

Glen D’Souza, Silvio Waschina, Christoph Kaleta, Christian Kost & Glen D'Souza
Many bacterial lineages lack seemingly essential metabolic genes. Previous work suggested selective benefits could drive the loss of biosynthetic functions from bacterial genomes when the corresponding metabolites are sufficiently available in the environment. However, the factors that govern this ‘genome streamlining’ remain poorly understood. Here we determine the effect of plasticity and epistasis on the fitness of Escherichia coli genotypes from whose genome biosynthetic genes for one, two, or three different amino acids have been...

Data from: Metabolic cross-feeding via intercellular nanotubes among bacteria

Samay R. Pande, Shraddha S. Shitut, Lisa Freund, Martin Westermann, Felix Bertels, Claudia Colesie, Ilka B. Bischofs & Christian Kost
Bacteria frequently exchange metabolites by diffusion through the extracellular environment, yet it remains generally unclear whether bacteria can also use cell–cell connections to directly exchange nutrients. Here we address this question by engineering cross-feeding interactions within and between Acinetobacter baylyi and Escherichia coli, in which two distant bacterial species reciprocally exchange essential amino acids. We establish that in a well-mixed environment E. coli, but likely not A. baylyi, can connect to other bacterial cells via...

Data from: Comparative genomics of the mimicry switch in Papilio dardanus

Martijn J. T. N. Timmermans, Simon W. Baxter, Rebecca Clark, David G. Heckel, Heiko Vogel, Steve Collins, Alexie Papanicolaou, Iva Fukova, Mathieu Joron, Martin J. Thompson, Chris D. Jiggins, Richard H. Ffrench-Constant & Alfried P. Vogler
The African Mocker Swallowtail, Papilio dardanus, is a textbook example in evolutionary genetics. Classical breeding experiments have shown that wing pattern variation in this polymorphic Batesian mimic is determined by the polyallelic H locus that controls a set of distinct mimetic phenotypes. Using bacterial artificial chromosome (BAC) sequencing, recombination analyses and comparative genomics, we show that H co-segregates with an interval of less than 500 kb that is collinear with two other Lepidoptera genomes and...

Data from: Feeding-induced rearrangement of green leaf volatiles reduces moth oviposition

Silke Allmann, Anna Späthe, Sonja Bisch-Knaden, Mario Kallenbach, Andreas Reinecke, Silke Sachse, Ian T. Baldwin & Bill S. Hansson
The ability to decrypt volatile plant signals is essential if herbivorous insects are to optimize their choice of host plants for their offspring. Green leaf volatiles (GLVs) constitute a widespread group of defensive plant volatiles that convey a herbivory-specific message via their isomeric composition: feeding of the tobacco hornworm Manduca sexta converts (Z)-3- to (E)-2-GLVs thereby attracting predatory insects. Here we show that this isomer-coded message is monitored by ovipositing M. sexta females. We detected...

Data from: A below ground herbivore shapes root defensive chemistry in natural plant populations

Meret Huber, Zoe Bont, Julia Fricke, Théo Brillatz, Zohra Aziz, Jonathan Gershenzon & Matthias Erb
Plants display extensive intraspecific variation in secondary metabolites. However, the selective forces shaping this diversity remain often unknown, especially below ground. Using Taraxacum officinale and its major native insect root herbivore Melolontha melolontha, we tested whether below ground herbivores drive intraspecific variation in root secondary metabolites. We found that high M. melolontha infestation levels over the last decades are associated with high concentrations of major root latex secondary metabolites across 21 central European T. officinale...

Data from: Ancient symbiosis confers desiccation resistance to stored grain pest beetles

Tobias Engl, Nadia Eberl, Carla Gorse, Theresa Krüger, Thorsten H.P. Schmidt, Rudy Plarre, Cornel Adler & Martin Kaltenpoth
Microbial symbionts of insects provide a range of ecological traits to their hosts that are beneficial in the context of biotic interactions. However, little is known about insect symbiont-mediated adaptation to the abiotic environment, e.g. temperature and humidity. Here we report on an ancient clade of intracellular, bacteriome-located Bacteroidetes symbionts that are associated with grain and wood pest beetles of the phylogenetically distant families Silvanidae and Bostrichidae. In the saw-toothed grain beetle Oryzaephilus surinamensis, we...

Data from: Inferring roles in defense from metabolic allocation of rice diterpenoids

Xuan Lu, Juan Zhang, Benjamin Brown, Riqing Li, Julio Rodríguez-Romero, Aileen Berasategui, Bo Liu, Meimei Xu, Dangping Luo, Zhiqiang Pan, Scott R. Baerson, Jonathan Gershenzon, Zhaohu Li, Ane Sesma, Bing Yang & Reuben J. Peters
Among their responses to microbial infection, plants deploy an arsenal of antibiotic natural products. While these historically have been identified on the basis of their antibiotic activity in vitro, this leaves open the question of their relevance to defense in planta. The vast majority of such natural products from the important crop plant rice (Oryza sativa) are diterpenoids whose biosynthesis proceeds via either ent- or syncopalyl diphosphate (CPP) intermediates, and which were isolated on the...

Data from: A hormone-related female anti-aphrodisiac signals temporary infertility and causes sexual abstinence to synchronize parental care

Katharina C. Engel, Johannes Stökl, Rebecca Schweizer, Heiko Vogel, Manfred Ayasse, Joachim Ruther & Sandra Steiger
The high energetic demand of parental care requires parents to direct their resources towards the support of existing offspring rather than investing into the production of additional young. However, how such a resource flow is channelled appropriately is poorly understood. In this study, we provide the first comprehensive analysis of the physiological mechanisms coordinating parental and mating effort in an insect exhibiting biparental care. We show a hormone-mediated infertility in female burying beetles during the...

Data from: Social transmission in the wild reduces predation pressure on novel prey signals

Liisa Hämäläinen, William Hoppitt, Hannah Rowland, Johanna Mappes, Anthony Fulford, Sebastian Sosa & Rose Thorogood
Social transmission of information is taxonomically widespread and could have profound effects on the ecological and evolutionary dynamics of animal communities. Demonstrating this in the wild, however, has been challenging. Here we show by field experiment that social transmission among predators can shape how selection acts on prey defences. Using artificial prey and a novel approach in statistical analyses of social networks, we find that blue tit (Cyanistes caeruleus) and great tit (Parus major) predators...

Alternative transcript splicing regulates UDP-glucosyltransferase-catalyzed detoxification of DIMBOA in the fall armyworm (Spodoptera frugiperda)

Bhawana Israni
Proteomics datasets- 1. Identification of interacting proteins identified via affinity purification of SfUGT33F28 variants expressed in insect cells. 2. EMSA- SfUGT33F28 interaction with insect nuclear proteins

PAVO pipeline for analysis of monarch butterfly wing colour

Hannah Rowland
R project containing the PAVO code, spectra of butterfly wings and Asclepias leaves and identifying information on the spectra, to analyse the conspicuousness of monarch wing colours

Data from: Modelling the two-locus architecture of divergent pollinator adaptation: how variation in SAD paralogues affects fitness and evolutionary divergence in sexually deceptive orchids

Shuqing Xu & Philipp M. Schlueter
Divergent selection by pollinators can bring about strong reproductive isolation via changes at few genes of large effect. This has recently been demonstrated in sexually deceptive orchids, where studies (1) quantified the strength of reproductive isolation in the field; (2) identified genes that appear to be causal for reproductive isolation; and (3) demonstrated selection by analysis of natural variation in gene sequence and expression. In a group of closely related Ophrys orchids, specific floral scent...

Data from: Vitamin supplementation by gut symbionts ensures metabolic homeostasis in an insect host

Hassan Salem, Eugen Bauer, Anja S. Strauss, Heiko Vogel, Manja Marz & Martin Kaltenpoth
Despite the demonstrated functional importance of gut microbes, our understanding of how animals regulate their metabolism in response to nutritionally beneficial symbionts remains limited. Here, we elucidate the functional importance of the African cotton stainer's (Dysdercus fasciatus) association with two actinobacterial gut symbionts and subsequently examine the insect's transcriptional response following symbiont elimination. In line with bioassays demonstrating the symbionts' contribution towards host fitness through the supplementation of B vitamins, comparative transcriptomic analyses of genes...

Data from: Flexible weighing of olfactory and vector information in the desert ant Cataglyphis fortis

Cornelia Buehlmann, Bill S. Hansson & Markus Knaden
Desert ants, Cataglyphis fortis, are equipped with remarkable skills that enable them to navigate efficiently. When travelling between the nest and a previously visited feeding site, they perform path integration (PI), but pinpoint the nest or feeder by following odour plumes. Homing ants respond to nest plumes only when the path integrator indicates that they are near home. This is crucial, as homing ants often pass through plumes emanating from foreign nests and do not...

Data from: Mechanisms of macroevolution: polyphagous plasticity in butterfly larvae revealed by RNA-Seq

Maria De La Paz Celorio-Mancera, Christopher W. Wheat, Heiko Vogel, Lina Söderlind, Niklas Janz & Sören Nylin
Transcriptome studies of insect herbivory are still rare, yet studies in model systems have uncovered patterns of transcript regulation that appear to provide insights into how insect herbivores attain polyphagy, such as a general increase in expression breadth and regulation of ribosomal, digestion- and detoxification-related genes. We investigated the potential generality of these emerging patterns, in the Swedish comma, Polygonia c-album, which is a polyphagous, widely-distributed butterfly. Urtica dioica and Ribes uva-crispa are hosts of...

Data from: The sesquiterpenes(E)-ß-farnesene and (E)-α-bergamotene quench ozone but fail to protect the wild tobacco Nicotiana attenuata from ozone, UVB, and drought stresses

Evan C. Palmer-Young, Daniel Veit, Jonathan Gershenzon & Meredith C. Schuman
Among the terpenes, isoprene (C5) and monoterpene hydrocarbons (C10) have been shown to ameliorate abiotic stress in a number of plant species via two proposed mechanisms: membrane stabilization and direct antioxidant effects. Sesquiterpene hydrocarbons (C15) not only share the structural properties thought to lend protective qualities to isoprene and monoterpene hydrocarbons, but also react rapidly with ozone, suggesting that sesquiterpenes may similarly enhance tolerance of abiotic stresses. To test whether sesquiterpenes protect plants against ozone,...

Data from: Experimental evolution of metabolic dependency in bacteria

Glen D'Souza, Christian Kost & Glen D’Souza
Bacteria frequently lose biosynthetic genes, thus making them dependent on an environmental uptake of the corresponding metabolite. Despite the ubiquity of this 'genome streamlining', it is generally unclear whether the concomitant loss of biosynthetic functions is favored by natural selection or rather caused by random genetic drift. Here we demonstrate experimentally that a loss of metabolic functions is strongly selected for when the corresponding metabolites can be derived from the environment. Serially propagating replicate populations...

Data from: Hoverfly preference for high honeydew amounts creates enemy-free space for aphids colonizing novel host plants

Ilka Vosteen, Jonathan Gershenzon & Grit Kunert
The existence of an enemy-free space can play an important role in aphid host race formation processes, but little is known about the mechanisms that create an area of low predation pressure on particular host plants. In this paper we identify a mechanism generating lower predation pressure that promotes the maintenance of the different host races of the pea aphid (Acyrthosiphon pisum) complex, a well-studied model for ecological speciation. The pea aphid consists of at...

Data from: Burying beetles regulate the microbiome of carcasses and use it to transmit a core microbiota to their offspring

Shantanu P. Shukla, Heiko Vogel, David G. Heckel, Andreas Vilcinskas & Martin Kaltenpoth
Necrophagous beetles utilize carrion, a highly nutritious resource that is susceptible to intense microbial competition, by treating it with antimicrobial anal and oral secretions. However, how this regulates the carcass microbiota remains unclear. Here, we show that carcasses prepared by the burying beetle Nicrophorus vespilloides undergo significant changes in their microbial communities subsequent to their burial and ‘preparation’. Prepared carcasses hosted a microbial community that was more similar to that of beetles’ anal and oral...

Data from: Herbivore-induced volatile blends with both “fast” and “slow” components provide robust indirect defense in nature

Youngsung Joo, Meredith C. Schuman, Jay K. Goldberg, Sang-Gyu Kim, Felipe Yon, Christoph Bruetting & Ian T. Baldwin
1.Plants emit volatile blends specific to particular herbivore interactions, which predators and parasitoids learn to associate with prey, increasing herbivore mortality and thereby plant fitness in a phenomenon termed indirect defense. 2.Herbivore-induced plant volatile blends commonly include both rapid, transient green leaf volatiles (GLVs) and delayed, enduring sesquiterpenes. A few laboratory studies indicate that insects can use plant volatiles to time behavior, but it is not known whether and how the temporal dynamics of plant...

Biocontrol potential of a novel endophytic bacterium from Mulberry (Morus) tree

Marine Vallet & Yongqi Shao
Mulberry (Morus) is an economically important woody tree that is suitable for use in sericulture as forage and in medicine. However, this broad-leaved tree is facing multiple threats ranging from phytopathogens to insect pests. Here, a Gram-positive, endospore-forming bacterium (ZJU1) was frequently isolated from healthy mulberry plants by screening for foliar endophytes showing antagonism against pathogens and pests. Whole-genome sequencing and annotation resulted in a genome size of 4.06 Mb and classified the bacterium as...

Within-crown variability in herbivore performance and leaf traits

Michael Eisenring, Unsicker Sybille B. & Lindroth Richard L.
Functional trait variation within individual plants is predicted to have important ecological consequences. However, our understanding of the sources contributing to subindividual trait heterogeneity, and the ramifications thereof, is poor. In a common garden, we sampled multiple genotypes of mature trembling aspen (Populus tremuloides) at different vertical crown levels and quantified the contributions of genetic, spatial and biotic (herbivory) factors to subindividual morphological and chemical leaf trait variance. Bioassays using gypsy moth (Lymantria dispar L.)...

Data from: Evolutionary stability of antibiotic protection in a defensive symbiosis

Tobias Engl, Johannes Kroiss, Marco Kai, Taras Y. Nechitaylo, Aleš Svatoš & Martin Kaltenpoth
The increasing resistance of human pathogens severely limits the efficacy of antibiotics in medicine, yet many animals, including solitary beewolf wasps, successfully engage in defensive alliances with antibiotic-producing bacteria for millions of years. Here, we report on the in situ production of 49 derivatives belonging to three antibiotic compound classes (45 piericidin derivatives, 3 streptochlorin derivatives, and nigericin) by the symbionts of 25 beewolf host species and subspecies, spanning 68 million years of evolution. Despite...

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