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Kostyuchenko RP, Nikanorova DD, Amosov AV. Germ Line/Multipotency Genes Show Differential Expression during Embryonic Development of the Annelid Enchytraeus coronatus. BIOLOGY 2023; 12:1508. [PMID: 38132334 PMCID: PMC10740902 DOI: 10.3390/biology12121508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 12/23/2023]
Abstract
Germ line development and the origin of the primordial germ cells (PGCs) are very variable and may occur across a range of developmental stages and in several developmental contexts. In establishing and maintaining germ line, a conserved set of genes is involved. On the other hand, these genes are expressed in multipotent/pluripotent cells that may give rise to both somatic and germline cells. To begin elucidating mechanisms by which the germ line is specified in Enchytraeus coronatus embryos, we identified twenty germline/multipotency genes, homologs of Vasa, PL10, Piwi, Nanos, Myc, Pumilio, Tudor, Boule, and Bruno, using transcriptome analysis and gene cloning, and characterized their expression by whole-mount in situ hybridization. To answer the question of the possible origin of PGCs in this annelid, we carried out an additional description of the early embryogenesis. Our results suggest that PGCs derive from small cells originating at the first two divisions of the mesoteloblasts. PGCs form two cell clusters, undergo limited proliferation, and migrate to the developing gonadal segments. In embryos and juvenile E. coronatus, homologs of the germline/multipotency genes are differentially expressed in both germline and somatic tissue including the presumptive germ cell precursors, posterior growth zone, developing foregut, and nervous system.
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Affiliation(s)
- Roman P. Kostyuchenko
- Department of Embryology, St. Petersburg State University, Universitetskaya nab. 7-9, 199034 St. Petersburg, Russia; (D.D.N.); (A.V.A.)
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2
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Lester PJ, O'Sullivan D, Perry GLW. Gene drives for invasive wasp control: Extinction is unlikely, with suppression dependent on dispersal and growth rates. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2023; 33:e2912. [PMID: 37615220 DOI: 10.1002/eap.2912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 06/28/2023] [Accepted: 07/14/2023] [Indexed: 08/25/2023]
Abstract
Gene drives offer a potentially revolutionary method for pest control over large spatial extents. These genetic modifications spread deleterious variants through a population and have been proposed as methods for pest suppression or even eradication. We examined the influence of local dispersal, long-distance and/or human-mediated dispersal, and variation in population growth on the success of a gene drive for the control of invasive social wasps (Vespula vulgaris). Our simulations incorporated a spatially realistic environment containing variable habitat quality in New Zealand. Pest eradication was not observed, except in extreme and unrealistic scenarios of constant, widespread, and spatially intense releases of genetically modified individuals every year for decades. Instead, the regional persistence of genetically modified and wild-type wasps was predicted. Simulations using spatially homogeneous versus realistic landscapes (incorporating uninhabitable areas and dispersal barriers) showed little difference in overall population dynamics. Overall, little impact on wasp abundance was observed in the first 15 years after introduction. After 25 years, populations were suppressed to levels <95% of starting populations. Populations exhibited "chase dynamics" with population cycles in space, with local extinction occurring in some areas while wasps became abundant in others. Increasing the wasps' local dispersal distance increased the spatial and temporal variability of the occupied area and population suppression. Varying levels of human-associated long-distance dispersal had little effect on population dynamics. Increasing intrinsic population growth rates interacted with local dispersal to cause higher mean populations and substantially higher levels of variation in population suppression and the total amount of landscape occupied. Gene drives appear unlikely to cause a rapid and widespread extinction of this and probably other pests but could offer long-term and cost-effective methods of pest suppression. The predicted level of <95% pest suppression would substantially reduce the predation pressure and competitive interactions of this invasive wasp on native species. However, the predicted long-term persistence of genetically modified pests will influence the ethics and likelihood of using gene drives for pest control, especially given concerns that modified wasps would eventually be transported back to their home range.
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Affiliation(s)
- Philip J Lester
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - David O'Sullivan
- School of Geography, Environment and Earth Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - George L W Perry
- School of Environment, University of Auckland, Auckland, New Zealand
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3
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Seth RK, Yadav P, Reynolds SE. Dichotomous sperm in Lepidopteran insects: a biorational target for pest management. FRONTIERS IN INSECT SCIENCE 2023; 3:1198252. [PMID: 38469506 PMCID: PMC10926456 DOI: 10.3389/finsc.2023.1198252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 07/31/2023] [Indexed: 03/13/2024]
Abstract
Lepidoptera are unusual in possessing two distinct kinds of sperm, regular nucleated (eupyrene) sperm and anucleate (apyrene) sperm ('parasperm'). Sperm of both types are transferred to the female and are required for male fertility. Apyrene sperm play 'helper' roles, assisting eupyrene sperm to gain access to unfertilized eggs and influencing the reproductive behavior of mated female moths. Sperm development and behavior are promising targets for environmentally safer, target-specific biorational control strategies in lepidopteran pest insects. Sperm dimorphism provides a wide window in which to manipulate sperm functionality and dynamics, thereby impairing the reproductive fitness of pest species. Opportunities to interfere with spermatozoa are available not only while sperm are still in the male (before copulation), but also in the female (after copulation, when sperm are still in the male-provided spermatophore, or during storage in the female's spermatheca). Biomolecular technologies like RNAi, miRNAs and CRISPR-Cas9 are promising strategies to achieve lepidopteran pest control by targeting genes directly or indirectly involved in dichotomous sperm production, function, or persistence.
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Affiliation(s)
- Rakesh K. Seth
- Department of Zoology, University of Delhi, Delhi, India
| | - Priya Yadav
- Department of Zoology, University of Delhi, Delhi, India
| | - Stuart E. Reynolds
- Department of Life Sciences, University of Bath, Bath, United Kingdom
- Milner Centre for Evolution, University of Bath, Bath, United Kingdom
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4
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Mine S, Sumitani M, Aoki F, Hatakeyama M, Suzuki MG. Effects of Functional Depletion of Doublesex on Male Development in the Sawfly, Athalia rosae. INSECTS 2021; 12:insects12100849. [PMID: 34680618 PMCID: PMC8538284 DOI: 10.3390/insects12100849] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 09/18/2021] [Accepted: 09/20/2021] [Indexed: 01/04/2023]
Abstract
Simple Summary The sawfly, Athalia rosae, exploits a haplodiploid mode of reproduction, in which fertilized eggs develop into diploid females, whereas unfertilized eggs parthenogenetically develop into haploid males. The doublesex (dsx) gene is a well-conserved transcription factor that regulates sexual differentiation in insects. In the present study, we knocked down the A. rosae ortholog of dsx (Ardsx) during several developmental stages with repeated double-stranded RNA (dsRNA) injections. As a result, knockdown of Ardsx in haploid males caused almost complete male-to-female sex reversal, but the resulting eggs were infertile. The same knockdown approach using diploid males caused complete male-to-female sex reversal; they were able to produce fertile eggs and exhibited female behaviors. The same RNAi treatment did not affect female differentiation. These results demonstrated that dsx in the sawfly is essential for male development and its depletion caused complete male-to-female sex reversal. This is the first demonstration of functional depletion of dsx not causing intersexuality but inducing total sex reversal in males instead. Abstract The doublesex (dsx) gene, which encodes a transcription factor, regulates sexual differentiation in insects. Sex-specific splicing of dsx occurs to yield male- and female-specific isoforms, which promote male and female development, respectively. Thus, functional disruption of dsx leads to an intersexual phenotype in both sexes. We previously identified a dsx ortholog in the sawfly, Athalia rosae. Similar to dsx in other insects, dsx in the sawfly yields different isoforms in males and females as a result of alternative splicing. The sawfly exploits a haplodiploid mode of reproduction, in which fertilized eggs develop into diploid females, whereas unfertilized eggs parthenogenetically develop into haploid males. In the present study, we knocked down the A. rosae ortholog of dsx (Ardsx) during several developmental stages with repeated double-stranded RNA (dsRNA) injections. Knockdown of Ardsx via parental RNA interference (RNAi), which enables knockdown of genes in offspring embryos, led to a lack of internal and external genitalia in haploid male progeny. Additional injection of dsRNA targeting Ardsx in these animals caused almost complete male-to-female sex reversal, but the resulting eggs were infertile. Notably, the same knockdown approach using diploid males obtained by sib-crossing caused complete male-to-female sex reversal; they were morphologically and behaviorally females. The same RNAi treatment did not affect female differentiation. These results indicate that dsx in the sawfly is essential for male development and its depletion caused complete male-to-female sex reversal. This is the first demonstration of functional depletion of dsx not causing intersexuality but inducing total sex reversal in males instead.
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Affiliation(s)
- Shotaro Mine
- Department of Biosciences, Nihon University, 3-25-40 Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan;
| | - Megumi Sumitani
- Division of Biotechnology, Institute of Agrobiological Sciences, NARO, Owashi, Tsukuba 305-8634, Japan;
| | - Fugaku Aoki
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa 277-8562, Japan;
| | - Masatsugu Hatakeyama
- Division of Applied Genetics, Institute of Agrobiological Sciences, NARO, Owashi, Tsukuba 305-8634, Japan;
| | - Masataka G. Suzuki
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa 277-8562, Japan;
- Correspondence: ; Tel.: +81-4-7136-3694
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5
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Slater GP, Smith NMA, Harpur BA. Prospects in Connecting Genetic Variation to Variation in Fertility in Male Bees. Genes (Basel) 2021; 12:1251. [PMID: 34440424 PMCID: PMC8392204 DOI: 10.3390/genes12081251] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 08/13/2021] [Accepted: 08/14/2021] [Indexed: 12/20/2022] Open
Abstract
Bees are economically and ecologically important pollinating species. Managed and native bee species face increasing pressures from human-created stressors such as habitat loss, pesticide use, and introduced pathogens. There has been increasing attention towards how each of these factors impacts fertility, especially sperm production and maintenance in males. Here, we turn our attention towards another important factor impacting phenotypic variation: genetics. Using honey bees as a model, we explore the current understanding of how genetic variation within and between populations contributes to variation in sperm production, sperm maintenance, and insemination success among males. We conclude with perspectives and future directions in the study of male fertility in honey bees and non-Apis pollinators more broadly, which still remain largely understudied.
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Affiliation(s)
- Garett P. Slater
- Department of Entomology, Purdue University, 901 W State St., West Lafayette, IN 47907, USA;
| | - Nicholas M. A. Smith
- School of Biological Sciences, The University of Queensland, Saint Lucia, QLD 4072, Australia;
| | - Brock A. Harpur
- Department of Entomology, Purdue University, 901 W State St., West Lafayette, IN 47907, USA;
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6
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Mrinalini, Koh CY, Puniamoorthy N. Rapid Genomic Evolution Drives the Diversification of Male Reproductive Genes in Dung Beetles. Genome Biol Evol 2021; 13:6329639. [PMID: 34426833 PMCID: PMC8382682 DOI: 10.1093/gbe/evab172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/21/2021] [Indexed: 11/22/2022] Open
Abstract
The molecular basis for the evolution of novel phenotypes is a central question in evolutionary biology. In recent years, dung beetles have emerged as models for novel trait evolution as they possess distinct precopulatory traits such as sexually dimorphic horns on their head and thorax. Here, we use functional and evolutionary genomics to investigate the origins and the evolution of postcopulatory reproductive traits in male dung beetles. Male ejaculates that underlie postcopulatory sexual selection are excellent candidates to study novel trait evolution as they are complex, fast evolving, and often highly divergent in insects. We assemble de novo transcriptomes of male accessory glands and testes of a widespread dung beetle, Catharsius molossus, and we perform an evolutionary analysis of closely and distantly related insect genomes. Our results show there is rapid innovation at the genomic level even among closely related dung beetles. Genomic expansion and contraction drive the divergence of male reproductive traits and their functions. The birth of scores of completely novel reproductive genes is reinforced by the recruitment of these genes for high expression in male reproductive tissues, especially in the accessory glands. We find that male accessory glands of C. molossus are specialized for secretory function and express female, egg, and embryo-related genes as well as serine protease inhibitors, whilst the testes are specialized for spermatogenesis and sperm function. Finally, we touch upon putative functions of these evolutionary novelties using structure-function analysis as these proteins bear no homology to any other known proteins.
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Affiliation(s)
- Mrinalini
- Department of Biological Sciences, National University of Singapore, Singapore
| | - Cho Yeow Koh
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Nalini Puniamoorthy
- Department of Biological Sciences, National University of Singapore, Singapore
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7
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Oeyen JP, Baa-Puyoulet P, Benoit JB, Beukeboom LW, Bornberg-Bauer E, Buttstedt A, Calevro F, Cash EI, Chao H, Charles H, Chen MJM, Childers C, Cridge AG, Dearden P, Dinh H, Doddapaneni HV, Dolan A, Donath A, Dowling D, Dugan S, Duncan E, Elpidina EN, Friedrich M, Geuverink E, Gibson JD, Grath S, Grimmelikhuijzen CJP, Große-Wilde E, Gudobba C, Han Y, Hansson BS, Hauser F, Hughes DST, Ioannidis P, Jacquin-Joly E, Jennings EC, Jones JW, Klasberg S, Lee SL, Lesný P, Lovegrove M, Martin S, Martynov AG, Mayer C, Montagné N, Moris VC, Munoz-Torres M, Murali SC, Muzny DM, Oppert B, Parisot N, Pauli T, Peters RS, Petersen M, Pick C, Persyn E, Podsiadlowski L, Poelchau MF, Provataris P, Qu J, Reijnders MJMF, von Reumont BM, Rosendale AJ, Simao FA, Skelly J, Sotiropoulos AG, Stahl AL, Sumitani M, Szuter EM, Tidswell O, Tsitlakidis E, Vedder L, Waterhouse RM, Werren JH, Wilbrandt J, Worley KC, Yamamoto DS, van de Zande L, Zdobnov EM, Ziesmann T, Gibbs RA, Richards S, Hatakeyama M, Misof B, Niehuis O. Sawfly Genomes Reveal Evolutionary Acquisitions That Fostered the Mega-Radiation of Parasitoid and Eusocial Hymenoptera. Genome Biol Evol 2021; 12:1099-1188. [PMID: 32442304 PMCID: PMC7455281 DOI: 10.1093/gbe/evaa106] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/19/2020] [Indexed: 12/12/2022] Open
Abstract
The tremendous diversity of Hymenoptera is commonly attributed to the evolution of parasitoidism in the last common ancestor of parasitoid sawflies (Orussidae) and wasp-waisted Hymenoptera (Apocrita). However, Apocrita and Orussidae differ dramatically in their species richness, indicating that the diversification of Apocrita was promoted by additional traits. These traits have remained elusive due to a paucity of sawfly genome sequences, in particular those of parasitoid sawflies. Here, we present comparative analyses of draft genomes of the primarily phytophagous sawfly Athalia rosae and the parasitoid sawfly Orussus abietinus. Our analyses revealed that the ancestral hymenopteran genome exhibited traits that were previously considered unique to eusocial Apocrita (e.g., low transposable element content and activity) and a wider gene repertoire than previously thought (e.g., genes for CO2 detection). Moreover, we discovered that Apocrita evolved a significantly larger array of odorant receptors than sawflies, which could be relevant to the remarkable diversification of Apocrita by enabling efficient detection and reliable identification of hosts.
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Affiliation(s)
- Jan Philip Oeyen
- Center for Molecular Biodiversity Research, Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany.,Lead Contact
| | | | | | - Leo W Beukeboom
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, The Netherlands
| | | | - Anja Buttstedt
- B CUBE-Center for Molecular Bioengineering, Technische Universität Dresden, Germany
| | - Federica Calevro
- INSA-Lyon, INRAE, BF2I, UMR0203, Université de Lyon, Villeurbanne, France
| | - Elizabeth I Cash
- School of Life Sciences, College of Liberal Arts and Sciences, Arizona State University.,Department of Environmental Science, Policy, and Management, College of Natural Resources, University of California, Berkeley
| | - Hsu Chao
- Human Genome Sequencing Center, Department of Human and Molecular Genetics, Baylor College of Medicine, Houston, Texas
| | - Hubert Charles
- INSA-Lyon, INRAE, BF2I, UMR0203, Université de Lyon, Villeurbanne, France
| | - Mei-Ju May Chen
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan
| | | | - Andrew G Cridge
- Genomics Aotearoa and Biochemistry Department, University of Otago, Dunedin, New Zealand
| | - Peter Dearden
- Genomics Aotearoa and Biochemistry Department, University of Otago, Dunedin, New Zealand
| | - Huyen Dinh
- Human Genome Sequencing Center, Department of Human and Molecular Genetics, Baylor College of Medicine, Houston, Texas
| | - Harsha Vardhan Doddapaneni
- Human Genome Sequencing Center, Department of Human and Molecular Genetics, Baylor College of Medicine, Houston, Texas
| | | | - Alexander Donath
- Center for Molecular Biodiversity Research, Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany
| | - Daniel Dowling
- Institute for Evolution and Biodiversity, University of Münster, Germany
| | - Shannon Dugan
- Human Genome Sequencing Center, Department of Human and Molecular Genetics, Baylor College of Medicine, Houston, Texas
| | - Elizabeth Duncan
- School of Biology, Faculty of Biological Sciences, University of Leeds, United Kingdom
| | - Elena N Elpidina
- A.N. Belozersky Institute of Physico-Chemical Biology, Moscow State University, Russia
| | - Markus Friedrich
- Department of Biological Sciences, Wayne State University, Detroit
| | - Elzemiek Geuverink
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, The Netherlands
| | - Joshua D Gibson
- Department of Biology, Georgia Southern University, Statesboro.,Department of Entomology, Purdue University, West Lafayette
| | - Sonja Grath
- Division of Evolutionary Biology, Faculty of Biology, Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
| | | | - Ewald Große-Wilde
- Department of Evolutionary Neuroethology, Max-Planck-Institute for Chemical Ecology, Jena, Germany.,Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague (CULS), Praha 6-Suchdol, Czech Republic
| | - Cameron Gudobba
- Department of Psychiatry and Behavioral Neuroscience, University of Chicago
| | - Yi Han
- Human Genome Sequencing Center, Department of Human and Molecular Genetics, Baylor College of Medicine, Houston, Texas
| | - Bill S Hansson
- Department of Evolutionary Neuroethology, Max-Planck-Institute for Chemical Ecology, Jena, Germany
| | - Frank Hauser
- Department of Biology, University of Copenhagen, Denmark
| | - Daniel S T Hughes
- Human Genome Sequencing Center, Department of Human and Molecular Genetics, Baylor College of Medicine, Houston, Texas
| | - Panagiotis Ioannidis
- Department of Genetic Medicine and Development, University of Geneva Medical School, Switzerland.,Swiss Institute of Bioinformatics, Geneva, Switzerland.,Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, Heraklion, Crete, Greece
| | - Emmanuelle Jacquin-Joly
- INRAE, CNRS, IRD, UPEC, Univ. P7, Institute of Ecology and Environmental Sciences of Paris, Sorbonne Université, Versailles, France
| | | | - Jeffery W Jones
- Department of Biological Sciences, Oakland University, Rochester
| | - Steffen Klasberg
- Institute for Evolution and Biodiversity, University of Münster, Germany
| | - Sandra L Lee
- Human Genome Sequencing Center, Department of Human and Molecular Genetics, Baylor College of Medicine, Houston, Texas
| | - Peter Lesný
- Institute of Evolutionary Biology and Ecology, Zoology and Evolutionary Biology, University of Bonn, Germany
| | - Mackenzie Lovegrove
- Genomics Aotearoa and Biochemistry Department, University of Otago, Dunedin, New Zealand
| | - Sebastian Martin
- Institute of Evolutionary Biology and Ecology, Zoology and Evolutionary Biology, University of Bonn, Germany
| | | | - Christoph Mayer
- Center for Molecular Biodiversity Research, Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany
| | - Nicolas Montagné
- INRAE, CNRS, IRD, UPEC, Univ. P7, Institute of Ecology and Environmental Sciences of Paris, Sorbonne Université, Paris, France
| | - Victoria C Moris
- Department of Evolutionary Biology and Ecology, Institute of Biology I (Zoology), Albert Ludwig University Freiburg, Germany
| | - Monica Munoz-Torres
- Berkeley Bioinformatics Open-source Projects (BBOP), Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, California
| | - Shwetha Canchi Murali
- Human Genome Sequencing Center, Department of Human and Molecular Genetics, Baylor College of Medicine, Houston, Texas
| | - Donna M Muzny
- Human Genome Sequencing Center, Department of Human and Molecular Genetics, Baylor College of Medicine, Houston, Texas
| | - Brenda Oppert
- USDA Agricultural Research Service, Center for Grain and Animal Health Research, Manhattan, Kansas
| | - Nicolas Parisot
- INSA-Lyon, INRAE, BF2I, UMR0203, Université de Lyon, Villeurbanne, France
| | - Thomas Pauli
- Department of Evolutionary Biology and Ecology, Institute of Biology I (Zoology), Albert Ludwig University Freiburg, Germany
| | - Ralph S Peters
- Arthropoda Department, Center for Taxonomy and Evolutionary Research, Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany
| | - Malte Petersen
- Center for Molecular Biodiversity Research, Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany.,Max Planck Institute of Immunobiology and Epigenetics, Freiburg, Germany
| | | | - Emma Persyn
- INRAE, CNRS, IRD, UPEC, Univ. P7, Institute of Ecology and Environmental Sciences of Paris, Sorbonne Université, Paris, France
| | - Lars Podsiadlowski
- Center for Molecular Biodiversity Research, Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany
| | | | - Panagiotis Provataris
- Center for Molecular Biodiversity Research, Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany
| | - Jiaxin Qu
- Human Genome Sequencing Center, Department of Human and Molecular Genetics, Baylor College of Medicine, Houston, Texas
| | - Maarten J M F Reijnders
- Department of Ecology and Evolution, University of Lausanne, Switzerland.,Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Björn Marcus von Reumont
- Institute for Insect Biotechnology, University of Gießen, Germany.,Center for Translational Biodiversity Genomics (LOEWE-TBG), Frankfurt, Germany
| | | | - Felipe A Simao
- Department of Genetic Medicine and Development, University of Geneva Medical School, Switzerland.,Swiss Institute of Bioinformatics, Geneva, Switzerland
| | - John Skelly
- Genomics Aotearoa and Biochemistry Department, University of Otago, Dunedin, New Zealand
| | | | - Aaron L Stahl
- Department of Biological Sciences, University of Cincinnati.,Department of Neuroscience, The Scripps Research Institute, Jupiter, Florida
| | - Megumi Sumitani
- Transgenic Silkworm Research Unit, Division of Biotechnology, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Owashi, Tsukuba, Japan
| | - Elise M Szuter
- School of Life Sciences, College of Liberal Arts and Sciences, Arizona State University
| | - Olivia Tidswell
- Biochemistry Department, University of Otago, Dunedin, New Zealand.,Zoology Department, University of Cambridge, United Kingdom
| | | | - Lucia Vedder
- Center for Bioinformatics Tübingen (ZBIT), University of Tübingen, Germany
| | - Robert M Waterhouse
- Department of Ecology and Evolution, University of Lausanne, Switzerland.,Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | | | - Jeanne Wilbrandt
- Center for Molecular Biodiversity Research, Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany.,Computational Biology Group, Leibniz Institute on Aging-Fritz Lipmann Institute, Jena, Germany
| | - Kim C Worley
- Human Genome Sequencing Center, Department of Human and Molecular Genetics, Baylor College of Medicine, Houston, Texas
| | - Daisuke S Yamamoto
- Division of Medical Zoology, Department of Infection and Immunity, Jichi Medical University, Yakushiji, Shimotsuke, Japan
| | - Louis van de Zande
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, The Netherlands
| | - Evgeny M Zdobnov
- Department of Genetic Medicine and Development, University of Geneva Medical School, Switzerland.,Swiss Institute of Bioinformatics, Geneva, Switzerland
| | - Tanja Ziesmann
- Center for Molecular Biodiversity Research, Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany
| | - Richard A Gibbs
- Human Genome Sequencing Center, Department of Human and Molecular Genetics, Baylor College of Medicine, Houston, Texas
| | - Stephen Richards
- Human Genome Sequencing Center, Department of Human and Molecular Genetics, Baylor College of Medicine, Houston, Texas
| | - Masatsugu Hatakeyama
- Insect Genome Research and Engineering Unit, Division of Applied Genetics, Institute of Agrobiological Sciences, NARO, Owashi, Tsukuba, Japan
| | - Bernhard Misof
- Center for Molecular Biodiversity Research, Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany
| | - Oliver Niehuis
- Department of Evolutionary Biology and Ecology, Institute of Biology I (Zoology), Albert Ludwig University Freiburg, Germany
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8
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A comparative genomic approach using mouse and fruit fly data to discover genes involved in testis function in hymenopterans with a focus on Nasonia vitripennis. BMC Ecol Evol 2021; 21:90. [PMID: 34011283 PMCID: PMC8132408 DOI: 10.1186/s12862-021-01825-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 05/12/2021] [Indexed: 11/18/2022] Open
Abstract
Background Spermatogenesis appears to be a relatively well-conserved process even among distantly related animal taxa such as invertebrates and vertebrates. Although Hymenopterans share many characteristics with other organisms, their complex haplodiploid reproduction system is still relatively unknown. However, they serve as a complementary insect model to Drosophila for studying functional male fertility. In this study, we used a comparative method combining taxonomic, phenotypic data and gene expression to identify candidate genes that could play a significant role in spermatogenesis in hymenopterans. Results Of the 546 mouse genes predominantly or exclusively expressed in the mouse testes, 36% had at least one ortholog in the fruit fly. Of these genes, 68% had at least one ortholog in one of the six hymenopteran species we examined. Based on their gene expression profiles in fruit fly testes, 71 of these genes were hypothesized to play a marked role in testis function. Forty-three of these 71 genes had an ortholog in at least one of the six hymenopteran species examined, and their enriched GO terms were related to the G2/M transition or to cilium organization, assembly, or movement. Second, of the 379 genes putatively involved in male fertility in Drosophila, 224 had at least one ortholog in each of the six Hymenoptera species. Finally, we showed that 199 of these genes were expressed in early pupal testis in Nasonia vitripennis; 86 exhibited a high level of expression, and 54 displayed modulated expression during meiosis. Conclusions In this study combining phylogenetic and experimental approaches, we highlighted genes that may have a major role in gametogenesis in hymenopterans; an essential prerequisite for further research on functional importance of these genes. Supplementary Information The online version contains supplementary material available at 10.1186/s12862-021-01825-6.
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9
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Shelby EA, Moss JB, Andreason SA, Simmons AM, Moore AJ, Moore PJ. Debugging: Strategies and Considerations for Efficient RNAi-Mediated Control of the Whitefly Bemisia tabaci. INSECTS 2020; 11:E723. [PMID: 33105847 PMCID: PMC7690610 DOI: 10.3390/insects11110723] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/19/2020] [Accepted: 10/21/2020] [Indexed: 01/26/2023]
Abstract
The whitefly Bemisia tabaci is a globally important pest that is difficult to control through insecticides, transgenic crops, and natural enemies. Post-transcriptional gene silencing through RNA interference (RNAi) has shown potential as a pest management strategy against B. tabaci. While genomic data and other resources are available to create highly effective customizable pest management strategies with RNAi, current applications do not capitalize on species-specific biology. This lack of specificity has the potential to have substantial ecological impacts. Here, we discuss both short- and long-term considerations for sustainable RNAi pest management strategies for B. tabaci, focusing on the need for species specificity incorporating both life history and population genetic considerations. We provide a conceptual framework for selecting sublethal target genes based on their involvement in physiological pathways, which has the greatest potential to ameliorate unintended negative consequences. We suggest that these considerations allow an integrated pest management approach, with fewer negative ecological impacts and reduced likelihood of the evolution of resistant populations.
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Affiliation(s)
- Emily A. Shelby
- Department of Entomology, University of Georgia, Athens, GA 30602, USA; (E.A.S.); (J.B.M.); (A.J.M.)
| | - Jeanette B. Moss
- Department of Entomology, University of Georgia, Athens, GA 30602, USA; (E.A.S.); (J.B.M.); (A.J.M.)
| | - Sharon A. Andreason
- U.S. Department of Agriculture, Agricultural Research Service, U.S. Vegetable laboratory, Charleston, SC 29414, USA; (S.A.A.); (A.M.S.)
| | - Alvin M. Simmons
- U.S. Department of Agriculture, Agricultural Research Service, U.S. Vegetable laboratory, Charleston, SC 29414, USA; (S.A.A.); (A.M.S.)
| | - Allen J. Moore
- Department of Entomology, University of Georgia, Athens, GA 30602, USA; (E.A.S.); (J.B.M.); (A.J.M.)
| | - Patricia J. Moore
- Department of Entomology, University of Georgia, Athens, GA 30602, USA; (E.A.S.); (J.B.M.); (A.J.M.)
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10
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Nosková A, Wurmser C, Crysnanto D, Sironen A, Uimari P, Fries R, Andersson M, Pausch H. Deletion of porcine BOLL is associated with defective acrosomes and subfertility in Yorkshire boars. Anim Genet 2020; 51:945-949. [PMID: 32975846 DOI: 10.1111/age.12998] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/21/2020] [Indexed: 12/30/2022]
Abstract
A recessive sperm defect of Yorkshire boars was detected more than a decade ago. Affected boars produce ejaculates that contain spermatozoa with defective acrosomes, resulting in low fertility. The acrosome defect was mapped to porcine chromosome 15 but the causal mutation has not been identified. We re-analyzed microarray-derived genotypes of affected boars and confirmed that the acrosome defect maps to a 12.24 Mb segment of porcine chromosome 15. To detect the mutation causing defective acrosomes, we sequenced the genomes of two affected and three unaffected boars to an average coverage of 11-fold. Read depth analysis revealed a 55 kb deletion that is associated with the acrosome defect. The deletion encompasses the BOLL gene encoding the boule homolog, an RNA binding protein which is an evolutionarily conserved member of the DAZ (Deleted in AZoospermia) gene family. Lack of BOLL expression causes spermatogenic arrest and sperm maturation failure in many species. Boars that carry the deletion in the homozygous state produce sperm but their acrosomes are defective, suggesting that lack of porcine BOLL compromises acrosome formation. Our findings warrant further research to investigate the role of BOLL during spermatogenesis and sperm maturation in pigs.
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Affiliation(s)
- A Nosková
- Animal Genomics, ETH Zürich, Eschikon 27, Lindau, 8315, Switzerland
| | - C Wurmser
- Chair of Animal Breeding, TU München, Liesel-Beckmann-Str. 1, Freising, 85354, Germany
| | - D Crysnanto
- Animal Genomics, ETH Zürich, Eschikon 27, Lindau, 8315, Switzerland
| | - A Sironen
- Natural Resources Institute Finland (Luke), Jokioinen, 31600, Finland
| | - P Uimari
- Department of Agricultural Sciences, University of Helsinki, Helsinki, 00014, Finland
| | - R Fries
- Chair of Animal Breeding, TU München, Liesel-Beckmann-Str. 1, Freising, 85354, Germany
| | - M Andersson
- Department of Production Animal Medicine, University of Helsinki, Helsinki, 00014, Finland
| | - H Pausch
- Animal Genomics, ETH Zürich, Eschikon 27, Lindau, 8315, Switzerland
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11
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Kulkarni A, Lopez DH, Extavour CG. Shared Cell Biological Functions May Underlie Pleiotropy of Molecular Interactions in the Germ Lines and Nervous Systems of Animals. Front Ecol Evol 2020. [DOI: 10.3389/fevo.2020.00215] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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12
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Lester PJ, Bulgarella M, Baty JW, Dearden PK, Guhlin J, Kean JM. The potential for a CRISPR gene drive to eradicate or suppress globally invasive social wasps. Sci Rep 2020; 10:12398. [PMID: 32709966 PMCID: PMC7382497 DOI: 10.1038/s41598-020-69259-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 07/09/2020] [Indexed: 12/14/2022] Open
Abstract
CRISPR gene drives have potential for widespread and cost-efficient pest control, but are highly controversial. We examined a potential gene drive targeting spermatogenesis to control the invasive common wasp (Vespula vulgaris) in New Zealand. Vespula wasps are haplodiploid. Their life cycle makes gene drive production challenging, as nests are initiated by single fertilized queens in spring followed by several cohorts of sterile female workers and the production of reproductives in autumn. We show that different spermatogenesis genes have different levels of variation between introduced and native ranges, enabling a potential 'precision drive' that could target the reduced genetic diversity and genotypes within the invaded range. In vitro testing showed guide-RNA target specificity and efficacy that was dependent on the gene target within Vespula, but no cross-reactivity in other Hymenoptera. Mathematical modelling incorporating the genetic and life history traits of Vespula wasps identified characteristics for a male sterility drive to achieve population control. There was a trade-off between drive infiltration and impact: a drive causing complete male sterility would not spread, while partial sterility could be effective in limiting population size if the homing rate is high. Our results indicate that gene drives may offer viable suppression for wasps and other haplodiploid pests.
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Affiliation(s)
- Philip J Lester
- School of Biological Sciences, Victoria University of Wellington, PO Box 600, Wellington, New Zealand.
| | - Mariana Bulgarella
- School of Biological Sciences, Victoria University of Wellington, PO Box 600, Wellington, New Zealand
| | - James W Baty
- School of Biological Sciences, Victoria University of Wellington, PO Box 600, Wellington, New Zealand
| | - Peter K Dearden
- Genomics Aotearoa and Biochemistry Department, University of Otago, Dunedin, New Zealand
| | - Joseph Guhlin
- Genomics Aotearoa and Biochemistry Department, University of Otago, Dunedin, New Zealand
| | - John M Kean
- AgResearch Limited, Hamilton, 3240, New Zealand
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13
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Lester PJ, Beggs JR. Invasion Success and Management Strategies for Social Vespula Wasps. ANNUAL REVIEW OF ENTOMOLOGY 2019; 64:51-71. [PMID: 30256668 DOI: 10.1146/annurev-ento-011118-111812] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Three species of Vespula have become invasive in Australia, Hawai'i, New Zealand, and North and South America and continue to spread. These social wasp species can achieve high nest densities, and their behavioral plasticity has led to substantial impacts on recipient communities. Ecologically, they affect all trophic levels, restructuring communities and altering resource flows. Economically, their main negative effect is associated with pollination and the apicultural industry. Climate change is likely to exacerbate their impacts in many regions. Introduced Vespula spp. likely experience some degree of enemy release from predators or parasites, although they are exposed to a wide range of microbial pathogens in both their native and introduced range. Toxic baits have been significantly improved over the last decade, enabling effective landscape-level control. Although investigated extensively, no effective biological control agents have yet been found. Emerging technologies such as gene drives are under consideration.
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Affiliation(s)
- Philip J Lester
- School of Biological Sciences, Victoria University of Wellington, Wellington 6140, New Zealand;
| | - Jacqueline R Beggs
- Centre for Biodiversity and Biosecurity, School of Biological Sciences, University of Auckland, Auckland 1072, New Zealand;
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14
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Taniai K, Arakawa T, Maeda T. Traumatic insemination is not the case in three Orius species (Heteroptera: Anthocoridae). PLoS One 2018; 13:e0206225. [PMID: 30517107 PMCID: PMC6281218 DOI: 10.1371/journal.pone.0206225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 10/09/2018] [Indexed: 11/29/2022] Open
Abstract
Traumatic insemination (TI) is an extraordinary style of mating behavior wherein the female integument is pierced by the male extragenital structure to transfer the spermatozoa into the female's body through wounding. Flower bugs of the genus Orius belong to the family Anthocoridae (Heteroptera), which is referred to as the "TI family". Males possess sharp shaped extragenitalia, and females receive the extragenitalia using the copulatory tubes, which are specialized extragenital structures in Orius species. Since TI is not well studied in insects possessing the copulatory tube, we examined the genital structures and copulatory processes of three species, Orius strigicollis, O. sauteri, and O. minutus. Scanning electron microscopic observations revealed the positions of male extragenital structures during copulation. A needle-like flagellum was deeply inserted into the female intersegment between the abdominal VII and VIII segments, while the curved part of a sickle-like cone forced the intersegment to expand. No scars were detected around the copulation region after copulation. The copulatory tube adhered to the interior of segment VII, and the interior integument around the copulatory tube remained intact after copulation. On the basis of these results, TI does not occur in these Orius species. A pair of seminal conceptacles, which exists in typical TI insects, was found at the base of the oviducts in O. strigicollis. The distal end of the copulatory tube connected to a closed bag with a double-membrane, termed the sperm pouch. The sperm pouch was filled with filamentous structures after copulation and structures with equivalent forms were observed in adult male testis. These structures, considered to be spermatozoa, persisted in the pouch for at least two weeks after copulation, suggesting that the pouch is a long-term spermatozoa storage organ.
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Affiliation(s)
- Kiyoko Taniai
- Division of Insect Sciences, The National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Toru Arakawa
- Division of Insect Sciences, The National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
| | - Taro Maeda
- Division of Insect Sciences, The National Agriculture and Food Research Organization (NARO), Tsukuba, Japan
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15
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The origins of global invasions of the German wasp (Vespula germanica) and its infection with four honey bee viruses. Biol Invasions 2018. [DOI: 10.1007/s10530-018-1786-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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Fierro-Constaín L, Schenkelaars Q, Gazave E, Haguenauer A, Rocher C, Ereskovsky A, Borchiellini C, Renard E. The Conservation of the Germline Multipotency Program, from Sponges to Vertebrates: A Stepping Stone to Understanding the Somatic and Germline Origins. Genome Biol Evol 2017; 9:474-488. [PMID: 28082608 PMCID: PMC5381599 DOI: 10.1093/gbe/evw289] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/12/2016] [Indexed: 12/13/2022] Open
Abstract
The germline definition in metazoans was first based on few bilaterian models. As a result, gene function interpretations were often based on phenotypes observed in those models and led to the definition of a set of genes, considered as specific of the germline, named the “germline core”. However, some of these genes were shown to also be involved in somatic stem cells, thus leading to the notion of germline multipotency program (GMP). Because Porifera and Ctenophora are currently the best candidates to be the sister-group to all other animals, the comparative analysis of gene contents and functions between these phyla, Cnidaria and Bilateria is expected to provide clues on early animal evolution and on the links between somatic and germ lineages. Our present bioinformatic analyses at the metazoan scale show that a set of 18 GMP genes was already present in the last common ancestor of metazoans and indicate more precisely the evolution of some of them in the animal lineage. The expression patterns and levels of 11 of these genes in the homoscleromorph sponge Oscarella lobularis show that they are expressed throughout their life cycle, in pluri/multipotent progenitors, during gametogenesis, embryogenesis and during wound healing. This new study in a nonbilaterian species reinforces the hypothesis of an ancestral multipotency program.
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Affiliation(s)
- Laura Fierro-Constaín
- Aix Marseille Univ, Univ Avignon, CNRS, IRD, UMR 7263, Institut Méditerranéen de Biodiversité et d’Ecologie marine et continentale IMBE, Station Marine d’Endoume, Rue de la Batterie des Lions, Marseille, France
- Corresponding authors: E-mails: ;
| | - Quentin Schenkelaars
- Aix Marseille Univ, Univ Avignon, CNRS, IRD, UMR 7263, Institut Méditerranéen de Biodiversité et d’Ecologie marine et continentale IMBE, Station Marine d’Endoume, Rue de la Batterie des Lions, Marseille, France
- Department of Genetics and Evolution, Faculty of Sciences, Institute of Genetics and Genomics in Geneva (IGe3), University of Geneva
| | - Eve Gazave
- Institut Jacques Monod, CNRS, UMR 7592, Univ Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Anne Haguenauer
- Aix Marseille Univ, Univ Avignon, CNRS, IRD, UMR 7263, Institut Méditerranéen de Biodiversité et d’Ecologie marine et continentale IMBE, Station Marine d’Endoume, Rue de la Batterie des Lions, Marseille, France
| | - Caroline Rocher
- Aix Marseille Univ, Univ Avignon, CNRS, IRD, UMR 7263, Institut Méditerranéen de Biodiversité et d’Ecologie marine et continentale IMBE, Station Marine d’Endoume, Rue de la Batterie des Lions, Marseille, France
| | - Alexander Ereskovsky
- Aix Marseille Univ, Univ Avignon, CNRS, IRD, UMR 7263, Institut Méditerranéen de Biodiversité et d’Ecologie marine et continentale IMBE, Station Marine d’Endoume, Rue de la Batterie des Lions, Marseille, France
- Department of Embryology, Faculty of Biology, St. Petersburg State University, St. Petersburg, Russia
| | - Carole Borchiellini
- Aix Marseille Univ, Univ Avignon, CNRS, IRD, UMR 7263, Institut Méditerranéen de Biodiversité et d’Ecologie marine et continentale IMBE, Station Marine d’Endoume, Rue de la Batterie des Lions, Marseille, France
| | - Emmanuelle Renard
- Aix Marseille Univ, Univ Avignon, CNRS, IRD, UMR 7263, Institut Méditerranéen de Biodiversité et d’Ecologie marine et continentale IMBE, Station Marine d’Endoume, Rue de la Batterie des Lions, Marseille, France
- Corresponding authors: E-mails: ;
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17
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Niu X, Kassa A, Hu X, Robeson J, McMahon M, Richtman NM, Steimel JP, Kernodle BM, Crane VC, Sandahl G, Ritland JL, Presnail JK, Lu AL, Wu G. Control of Western Corn Rootworm (Diabrotica virgifera virgifera) Reproduction through Plant-Mediated RNA Interference. Sci Rep 2017; 7:12591. [PMID: 28974735 PMCID: PMC5626700 DOI: 10.1038/s41598-017-12638-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 09/13/2017] [Indexed: 12/27/2022] Open
Abstract
RNA interference (RNAi) in transgenic maize has recently emerged as an alternative mode of action for western corn rootworm (Diabrotica virgifera virgifera) control which can be combined with protein-based rootworm control options for improved root protection and resistance management. Currently, transgenic RNAi-based control has focused on suppression of genes that when silenced lead to larval mortality. We investigated control of western corn rootworm reproduction through RNAi by targeting two reproductive genes, dvvgr and dvbol, with the goal of reducing insect fecundity as a new tool for pest management. The results demonstrated that exposure of adult beetles, as well as larvae to dvvgr or dvbol dsRNA in artificial diet, caused reduction of fecundity. Furthermore, western corn rootworm beetles that emerged from larval feeding on transgenic maize roots expressing dvbol dsRNA also showed significant fecundity reduction. This is the first report of reduction of insect reproductive fitness through plant-mediated RNAi, demonstrating the feasibility of reproductive RNAi as a management tool for western corn rootworm.
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Affiliation(s)
- Xiping Niu
- DuPont Pioneer, 7300 NW 62nd Ave., Johnston, IA, USA
| | - Adane Kassa
- DuPont Pioneer, 7300 NW 62nd Ave., Johnston, IA, USA
| | - Xu Hu
- DuPont Pioneer, 7300 NW 62nd Ave., Johnston, IA, USA.
| | | | | | | | | | | | | | - Gary Sandahl
- DuPont Pioneer, 7300 NW 62nd Ave., Johnston, IA, USA
| | | | - James K Presnail
- DuPont Pioneer, 7300 NW 62nd Ave., Johnston, IA, USA.,Evogene Ltd, Saint Louis, MO, USA
| | - Albert L Lu
- DuPont Pioneer, 7300 NW 62nd Ave., Johnston, IA, USA
| | - Gusui Wu
- DuPont Pioneer, 7300 NW 62nd Ave., Johnston, IA, USA
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18
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Niu X, Kassa A, Hu X, Robeson J, McMahon M, Richtman NM, Steimel JP, Kernodle BM, Crane VC, Sandahl G, Ritland JL, Presnail JK, Lu AL, Wu G. Control of Western Corn Rootworm (Diabrotica virgifera virgifera) Reproduction through Plant-Mediated RNA Interference. Sci Rep 2017. [PMID: 28974735 DOI: 10.1038/s41598-017-12638-12633] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2023] Open
Abstract
RNA interference (RNAi) in transgenic maize has recently emerged as an alternative mode of action for western corn rootworm (Diabrotica virgifera virgifera) control which can be combined with protein-based rootworm control options for improved root protection and resistance management. Currently, transgenic RNAi-based control has focused on suppression of genes that when silenced lead to larval mortality. We investigated control of western corn rootworm reproduction through RNAi by targeting two reproductive genes, dvvgr and dvbol, with the goal of reducing insect fecundity as a new tool for pest management. The results demonstrated that exposure of adult beetles, as well as larvae to dvvgr or dvbol dsRNA in artificial diet, caused reduction of fecundity. Furthermore, western corn rootworm beetles that emerged from larval feeding on transgenic maize roots expressing dvbol dsRNA also showed significant fecundity reduction. This is the first report of reduction of insect reproductive fitness through plant-mediated RNAi, demonstrating the feasibility of reproductive RNAi as a management tool for western corn rootworm.
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Affiliation(s)
- Xiping Niu
- DuPont Pioneer, 7300 NW 62nd Ave., Johnston, IA, USA
| | - Adane Kassa
- DuPont Pioneer, 7300 NW 62nd Ave., Johnston, IA, USA
| | - Xu Hu
- DuPont Pioneer, 7300 NW 62nd Ave., Johnston, IA, USA.
| | | | | | | | | | | | | | - Gary Sandahl
- DuPont Pioneer, 7300 NW 62nd Ave., Johnston, IA, USA
| | | | - James K Presnail
- DuPont Pioneer, 7300 NW 62nd Ave., Johnston, IA, USA
- Evogene Ltd, Saint Louis, MO, USA
| | - Albert L Lu
- DuPont Pioneer, 7300 NW 62nd Ave., Johnston, IA, USA
| | - Gusui Wu
- DuPont Pioneer, 7300 NW 62nd Ave., Johnston, IA, USA
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19
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Kageyama D, Wang CH, Hatakeyama M. Wolbachia infections of the butterfly Eurema mandarina interfere with embryonic development of the sawfly Athalia rosae. J Invertebr Pathol 2017; 150:76-81. [PMID: 28789848 DOI: 10.1016/j.jip.2017.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 08/02/2017] [Accepted: 08/02/2017] [Indexed: 11/15/2022]
Abstract
Although maternally transmitted microorganisms such as Wolbachia are well known to have a variety of effects on the reproduction of diverse insect species, little is known about the underlying mechanisms of actions. Artificial transfer of Wolbachia between taxonomically distant host species may provide insights into Wolbachia-induced manipulations of hosts. Here we performed a cross-order transfer of feminizing Wolbachia derived from a butterfly, Eurema mandarina. The Wolbachia were propagated in the Eurema hecabe cell line, called NTU-YB, and then used to inject prepupal/pupal females of a Wolbachia-free hymenopteran sawfly, Athalia rosae. The 14 females that emerged as adults looked morphologically and behaviorally healthy, and ovarian development appeared normal on dissection. However, in contrast to the control, none of the 333 eggs harbored by the seven Wolbachia-injected females developed successfully. Similarly, none of the 140 eggs laid on host plant by the four Wolbachia-injected females, which were mated with males, showed any signs of development. Wolbachia infection was detected from whole-body samples of the inoculated individuals, but not from the eggs they produced. Disruption of embryonic development despite the absence of Wolbachia in the egg cytoplasm may represent a new phenotype involving maternal effects that result in female sterility.
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Affiliation(s)
- Daisuke Kageyama
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8634, Japan.
| | - Chung-Hsiung Wang
- Department of Entomology, College of Bioresources and Agriculture, National Taiwan University, Taipei 106, Taiwan, ROC.
| | - Masatsugu Hatakeyama
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki 305-8634, Japan.
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20
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Kim B, Rhee K. BOULE, a Deleted in Azoospermia Homolog, Is Recruited to Stress Granules in the Mouse Male Germ Cells. PLoS One 2016; 11:e0163015. [PMID: 27632217 PMCID: PMC5024984 DOI: 10.1371/journal.pone.0163015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Accepted: 09/01/2016] [Indexed: 11/22/2022] Open
Abstract
High temperature adversely affects normal development of male germ cells in mammals. Acute heat stress induces the formation of stress granules (SGs) in a set of male germ cells, and the SGs have been proposed to protect those cells from heat-induced apoptosis. DAZL, one of DAZ (Deleted in Azoospermia) family proteins, was shown to be an essential component of SGs, which is required for SG formation in the mouse testis. In the present study, we asked whether BOULE, the founding member of DAZ family proteins, is a component of the SGs. We show that BOULE is recruited to the SGs upon heat stress, and that these SGs are developmental stage-specific. These results suggest that DAZ family proteins may have conserved roles in the SGs of male germ cells.
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Affiliation(s)
- Byunghyuk Kim
- Department of Biological Sciences, Seoul National University, Seoul, Korea
| | - Kunsoo Rhee
- Department of Biological Sciences, Seoul National University, Seoul, Korea
- * E-mail:
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