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cytoplasmic incompatibility

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https://www.readbyqxmd.com/read/29757522/evidence-of-natural-wolbachia-infections-and-molecular-identification-of-field-populations-of-culex-pipiens-complex-diptera-culicidae-mosquitoes-in-western-turkey
#1
Burçin Morçiçek, Belgin Gocmen Taskin, Ersin Doğaç, Taylan Doğaroğlu, Vatan Taskin
Establishing reliable risk projection information about the distribution pattern of members of the Culex pipiens complex is of particular interest, as these mosquitoes are competent vectors for certain disease-causing pathogens. Wolbachia, a maternally inherited bacterial symbiont, are distributed in various arthropod species and can induce cytoplasmic incompatibility, i.e., reduced egg hatch, in certain crosses. It is being considered as a tool for population control of mosquito disease vectors. The Aegean region is characterized by highly populated, rural, and agricultural areas and is also on the route of the migratory birds...
June 2018: Journal of Vector Ecology: Journal of the Society for Vector Ecology
https://www.readbyqxmd.com/read/29751814/a-wolbachia-triple-strain-infection-generates-self-incompatibility-in-aedes-albopictus-and-transmission-instability-in-aedes-aegypti
#2
Thomas H Ant, Steven P Sinkins
BACKGROUND: Artificially-introduced transinfections of the intracellular bacterium Wolbachia pipientis have the potential to reduce the vectorial capacity of mosquito populations for viruses such as dengue and chikungunya. Aedes albopictus has two native strains of Wolbachia, but their replacement with the non-native wMel strain blocks transmission of both viruses. The pattern of cytoplasmic incompatiiblity generated by wMel with wild-types is bidirectional. Novel-plus-native-strain co-infection is predicted to lead to a more efficient population spread capacity; from a bi-directional to a uni-directional cytoplasmic incompatibility (CI) model...
May 11, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29745300/wsp-based-analysis-of-wolbachia-strains-associated-with-phlebotomus-papatasi-and-p-sergenti-diptera-psychodidae-main-cutaneous-leishmaniasis-vectors-introduction-of-a-new-subgroup-wserg
#3
Fateh Karimian, Hassan Vatandoost, Yavar Rassi, Naseh Maleki-Ravasan, Nayyereh Choubdar, Mona Koosha, Kourosh Arzamani, Eslam Moradi-Asl, Arshad Veysi, Hamzeh Alipour, Manouchehr Shirani, Mohammad Ali Oshaghi
Sand flies of Phlebotomus papatasi and P. sergenti are the main vectors of cutaneous leishmanisis (CL) in the old world. We aimed to screen Iranian P. papatasi and P. sergenti for their natural infections with Wolbachia and to determine their phylogenetic association with other species. Wolbachia surface protein (wsp) gene was PCR amplified from DNA extracted from Phlebotomus species, sequenced, and were analysed in combination with wsp sequences related to Phelebtominae and other insects. All Wolbachia-infecting Iranian sand flies of P...
May 10, 2018: Pathogens and Global Health
https://www.readbyqxmd.com/read/29720392/activation-of-self-incompatibility-signaling-in-transgenic-arabidopsis-thaliana-is-independent-of-ap2-based-clathrin-mediated-endocytosis
#4
Masaya Yamamoto, Takeshi Nishio, June B Nasrallah
Internalization of plasma membrane (PM)-localized ligand-activated receptor kinases and their trafficking to sorting endosomes have traditionally been viewed as functioning primarily in the down-regulation of receptor signaling, but are now considered to be also essential for signaling by some receptors. A major mechanism for internalization of PM proteins is clathrin-mediated endocytosis (CME). CME is mediated by the Adaptor Protein Complex 2 (AP2), which is involved in interaction of the AP2 μ-adaptin subunit with a tyrosine-based Yxxφ motif located in the cytoplasmic domain of the cargo protein...
May 2, 2018: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/29686091/one-prophage-wo-gene-rescues-cytoplasmic-incompatibility-in-drosophila-melanogaster
#5
J Dylan Shropshire, Jungmin On, Emily M Layton, Helen Zhou, Seth R Bordenstein
Wolbachia are maternally inherited, intracellular bacteria at the forefront of vector control efforts to curb arbovirus transmission. In international field trials, the cytoplasmic incompatibility (CI) drive system of w Mel Wolbachia is deployed to replace target vector populations, whereby a Wolbachia -induced modification of the sperm genome kills embryos. However, Wolbachia in the embryo rescue the sperm genome impairment, and therefore CI results in a strong fitness advantage for infected females that transmit the bacteria to offspring...
April 23, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29625205/a-sex-structured-model-with-birth-pulse-and-release-strategy-for-the-spread-of-wolbachia-in-mosquito-population
#6
Yazhi Li, Xianning Liu
Dengue fever is one of the most important diseases causing illness and death all over the world, which brings tremendous threat to peoples' life and property security, especially in the undeveloped areas. The main vector, Aedes aegypti, must be controlled to prevent the transmission of dengue. There are a variety of methods to control it. Wolbachia is an innovative bacterium which breaks the dengue transmission cycle for its characteristics of cytoplasmic incompatibility and maternal transmission. In this paper, a sex-structured model with birth pulse is established to study the spread of Wolbachia in mosquito population...
April 3, 2018: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/29568706/current-state-of-knowledge-on-wolbachia-infection-among-coleoptera-a-systematic-review
#7
Łukasz Kajtoch, Nela Kotásková
Background: Despite great progress in studies on Wolbachia infection in insects, the knowledge about its relations with beetle species, populations and individuals, and the effects of bacteria on these hosts, is still unsatisfactory. In this review we summarize the current state of knowledge about Wolbachia occurrence and interactions with Coleopteran hosts. Methods: An intensive search of the available literature resulted in the selection of 86 publications that describe the relevant details about Wolbachia presence among beetles...
2018: PeerJ
https://www.readbyqxmd.com/read/29558974/wolbachia-diversity-and-cytoplasmic-incompatibility-patterns-in-culex-pipiens-populations-in-turkey
#8
Mine Altinli, Filiz Gunay, Bulent Alten, Mylene Weill, Mathieu Sicard
BACKGROUND: Wolbachia are maternally transmitted bacteria that can manipulate their hosts' reproduction causing cytoplasmic incompatibility (CI). CI is a sperm-egg incompatibility resulting in embryonic death. Due to this sterilising effect on mosquitoes, Wolbachia are considered for vector control strategies. Important vectors for arboviruses, filarial nematodes and avian malaria, mosquitoes of Culex pipiens complex are suitable for Wolbachia-based vector control. They are infected with Wolbachia wPip strains belonging to five genetically distinct groups (wPip-I to V) within the Wolbachia B supergroup...
March 20, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29526588/rapid-global-spread-of-wri-like-wolbachia-across-multiple-drosophila
#9
Michael Turelli, Brandon S Cooper, Kelly M Richardson, Paul S Ginsberg, Brooke Peckenpaugh, Chenling X Antelope, Kevin J Kim, Michael R May, Antoine Abrieux, Derek A Wilson, Michael J Bronski, Brian R Moore, Jian-Jun Gao, Michael B Eisen, Joanna C Chiu, William R Conner, Ary A Hoffmann
Maternally transmitted Wolbachia, Spiroplasma, and Cardinium bacteria are common in insects [1], but their interspecific spread is poorly understood. Endosymbionts can spread rapidly within host species by manipulating host reproduction, as typified by the global spread of wRi Wolbachia observed in Drosophila simulans [2, 3]. However, because Wolbachia cannot survive outside host cells, spread between distantly related host species requires horizontal transfers that are presumably rare [4-7]. Here, we document spread of wRi-like Wolbachia among eight highly diverged Drosophila hosts (10-50 million years) over only about 14,000 years (5,000-27,000)...
March 19, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29468014/a-comparative-analysis-of-wolbachia-induced-host-reproductive-phenotypes-reveals-transition-rate-heterogeneity
#10
Heinrich Zu Dohna, Carine Houry, Zakaria Kambris
The endosymbiotic bacterium Wolbachia infects a wide range of arthropods and their relatives. It is an intracellular parasite transmitted through the egg from mother to offspring. Wolbachia can spread and persist through various means of host reproductive manipulation. How these different mechanisms of host manipulation evolved in Wolbachia is unclear. Which host reproductive phenotype is most likely to be ancestral and whether evolutionary transitions between some host phenotypes are more common than others remain unanswered questions...
February 2018: Ecology and Evolution
https://www.readbyqxmd.com/read/29435238/symbiont-conferred-reproduction-and-fitness-benefits-can-favour-their-host-occurrence
#11
Yan-Kai Zhang, Kun Yang, Yu-Xi Zhu, Xiao-Yue Hong
Double infections of Wolbachia and Spiroplasma are frequent in natural populations of Tetranychus truncatus , a polyphagous mite species that has been a dominant species in China since 2009. However, little is known about the causes and ecological importance of such coexistences. In this study, we established T. truncatus strains with different infection types and then inferred the impact of the two endosymbionts on host reproduction and fitness. Double infection induced cytoplasmic incompatibility, which was demonstrated by reduction in egg hatchability of incompatible crosses...
February 2018: Ecology and Evolution
https://www.readbyqxmd.com/read/29370307/the-wolbachia-strain-wau-provides-highly-efficient-virus-transmission-blocking-in-aedes-aegypti
#12
Thomas H Ant, Christie S Herd, Vincent Geoghegan, Ary A Hoffmann, Steven P Sinkins
Introduced transinfections of the inherited bacteria Wolbachia can inhibit transmission of viruses by Aedes mosquitoes, and in Ae. aegypti are now being deployed for dengue control in a number of countries. Only three Wolbachia strains from the large number that exist in nature have to date been introduced and characterized in this species. Here novel Ae. aegypti transinfections were generated using the wAlbA and wAu strains. In its native Ae. albopictus, wAlbA is maintained at lower density than the co-infecting wAlbB, but following transfer to Ae...
January 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29358578/culex-pipiens-crossing-type-diversity-is-governed-by-an-amplified-and-polymorphic-operon-of-wolbachia
#13
Manon Bonneau, Celestine Atyame, Marwa Beji, Fabienne Justy, Martin Cohen-Gonsaud, Mathieu Sicard, Mylène Weill
Culex pipiens mosquitoes are infected with Wolbachia (wPip) that cause an important diversity of cytoplasmic incompatibilities (CIs). Functional transgenic studies have implicated the cidA-cidB operon from wPip and its homolog in wMel in CI between infected Drosophila males and uninfected females. However, the genetic basis of the CI diversity induced by different Wolbachia strains was unknown. We show here that the remarkable diversity of CI in the C. pipiens complex is due to the presence, in all tested wPip genomes, of several copies of the cidA-cidB operon, which undergoes diversification through recombination events...
January 22, 2018: Nature Communications
https://www.readbyqxmd.com/read/29351633/evolutionary-genetics-of-cytoplasmic-incompatibility-genes-cifa-and-cifb-in-prophage-wo-of-wolbachia
#14
Amelia R I Lindsey, Danny W Rice, Sarah R Bordenstein, Andrew W Brooks, Seth R Bordenstein, Irene L G Newton
The bacterial endosymbiont Wolbachia manipulates arthropod reproduction to facilitate its maternal spread through host populations. The most common manipulation is cytoplasmic incompatibility (CI): Wolbachia-infected males produce modified sperm that cause embryonic mortality, unless rescued by embryos harboring the same Wolbachia. The genes underlying CI, cifA and cifB, were recently identified in the eukaryotic association module of Wolbachia's prophage WO. Here, we use transcriptomic and genomic approaches to address three important evolutionary facets of the cif genes...
February 1, 2018: Genome Biology and Evolution
https://www.readbyqxmd.com/read/29320479/paternal-chromosome-loss-and-metabolic-crisis-contribute-to-hybrid-inviability-in-xenopus
#15
Romain Gibeaux, Rachael Acker, Maiko Kitaoka, Georgios Georgiou, Ila van Kruijsbergen, Breanna Ford, Edward M Marcotte, Daniel K Nomura, Taejoon Kwon, Gert Jan C Veenstra, Rebecca Heald
Hybridization of eggs and sperm from closely related species can give rise to genetic diversity, or can lead to embryo inviability owing to incompatibility. Although central to evolution, the cellular and molecular mechanisms underlying post-zygotic barriers that drive reproductive isolation and speciation remain largely unknown. Species of the African clawed frog Xenopus provide an ideal system to study hybridization and genome evolution. Xenopus laevis is an allotetraploid with 36 chromosomes that arose through interspecific hybridization of diploid progenitors, whereas Xenopus tropicalis is a diploid with 20 chromosomes that diverged from a common ancestor approximately 48 million years ago...
January 18, 2018: Nature
https://www.readbyqxmd.com/read/29286204/genetic-variation-and-potential-coinfection-of-wolbachia-among-widespread-asian-citrus-psyllid-diaphorina-citri-kuwayama-populations
#16
Chia-Ching Chu, Mark Hoffmann, W Evan Braswell, Kirsten S Pelz-Stelinski
Wolbachia can profoundly influence the survival, reproduction, and defenses of insect hosts. These interactions could potentially be harnessed for managing pests or insect-transmitted diseases. Diaphorina citri Kuwayama is a phloem-feeding pest capable of transmitting the putative causal agent of citrus greening, Candidatus Liberibacter asiaticus (CLas). Like many insects, D. citri is also infected with Wolbachia (wDi). Recent studies indicate that the relative abundance of wDi could be associated with the abundance of CLas, and that wDi may contribute to regulating expression of phage lytic cycle genes in CLas, suggesting the need for better understanding of wDi biology in general...
December 29, 2017: Insect Science
https://www.readbyqxmd.com/read/29274571/tantf2-a-contributor-for-wheat-resistance-to-the-stripe-rust-pathogen
#17
Qiong Zhang, Bing Wang, Jinping Wei, Xiaojie Wang, Qingmei Han, Zhensheng Kang
Nuclear Transport Factor 2 (NTF2) functions as a critical regulator in balancing the GTP-and GDP-bound forms of Ran, a class of evolutionarily conserved small GTP-binding protein. During the incompatible interaction between wheat-Puccinia striiformis f. sp. tritici (Pst), a cDNA fragment encoding a putative wheat NTF2 gene was found to be significantly induced, suggesting a potential role in wheat resistance to Pst. In this work, the full length of TaNTF2 was obtained, with three copies located on 7A, 7B and 7D chromosomes, respectively...
February 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29248525/assessing-the-efficiency-of-wolbachia-driven-aedes-mosquito-suppression-by-delay-differential-equations
#18
Mugen Huang, Jiaowan Luo, Linchao Hu, Bo Zheng, Jianshe Yu
To suppress wild population of Aedes mosquitoes, the primary transmission vector of life-threatening diseases such as dengue, malaria, and Zika, an innovative strategy is to release male mosquitoes carrying the bacterium Wolbachia into natural areas to drive female sterility by cytoplasmic incompatibility. We develop a model of delay differential equations, incorporating the strong density restriction in the larval stage, to assess the delicate impact of life table parameters on suppression efficiency. Through mathematical analysis, we find the sufficient and necessary condition for global stability of the complete suppression state...
December 14, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/29234159/evolution-of-reproductive-parasites-with-direct-fitness-benefits
#19
Roman Zug, Peter Hammerstein
Maternally inherited symbionts such as Wolbachia have long been seen mainly as reproductive parasites, with deleterious effects on host fitness. It is becoming clear, however, that, frequently, these symbionts also have beneficial effects on host fitness, either along with reproductive parasitism or not. Using the examples of cytoplasmic incompatibility (CI) and male-killing (MK), we here analyze the effect of direct fitness benefits on the evolution of reproductive parasites. By means of a simple theoretical framework, we synthesize and extend earlier modeling approaches for CI and MK, which usually ignore fitness benefits...
March 2018: Heredity
https://www.readbyqxmd.com/read/29216317/novel-wolbachia-transinfected-aedes-aegypti-mosquitoes-possess-diverse-fitness-and-vector-competence-phenotypes
#20
COMPARATIVE STUDY
Johanna E Fraser, Jyotika Taneja De Bruyne, Iñaki Iturbe-Ormaetxe, Justin Stepnell, Rhiannon L Burns, Heather A Flores, Scott L O'Neill
Wolbachia pipientis from Drosophila melanogaster (wMel) is an endosymbiotic bacterium that restricts transmission of human pathogenic flaviviruses and alphaviruses, including dengue, Zika, and chikungunya viruses, when introduced into the mosquito vector Aedes aegypti. To date, wMel-infected Ae. aegypti have been released in field trials in 5 countries to evaluate the effectiveness of this strategy for disease control. Despite the success in establishing wMel-infected mosquitoes in wild populations, and the well-characterized antiviral capabilities of wMel, transinfecting different or additional Wolbachia strains into Ae...
December 2017: PLoS Pathogens
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