Keywords: wolbachia

A Wolbachia factor for male killing in lepidopteran insects

S. Katsuma, K. Hirota, N. Matsuda-Imai, T. Fukui, T. Muro, K. Nishino, H. Kosako, K. Shoji, H. Takanashi, T. Fujii, S.-i. Arimura and T. Kiuchi,  Nature Communications,  13:6764. 2022.
Bacterial symbionts, such as Wolbachia species, can manipulate the sexual development and reproduction of their insect hosts. For example, Wolbachia infection induces male-specific death in the Asian corn borer Ostrinia furnacalis by targeting the host factor Masculinizer (Masc), ...
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Independent evaluation of Wolbachia infected male mosquito releases for control of Aedes aegypti in Harris County, Texas, using a Bayesian abundance estimator

S. Lozano, K. Pritts, D. Duguma, C. Fredregill and R. Connelly,  PLOS Neglected Tropical Diseases,  16:e0010907. 2022.
Among disease vectors, Aedes aegypti (L.) (Diptera: Culicidae) is one of the most insidious species in the world. The disease burden created by this species has dramatically increased in the past 50 years, and during this time countries have relied on pesticides for control and ...
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Independent evaluation of Wolbachia infected male mosquito releases for control of Aedes aegypti in Harris County, Texas, using a Bayesian abundance estimator

S. Lozano, K. Pritts, D. Duguma, C. Fredregill and R. Connelly,  PLOS Neglected Tropical Diseases,  16:e0010907. 2022.
Author summary Aedes aegypti is one of the most important mosquito species because females can potentially carry pathogens that cause disease. These diseases have a tremendous impact worldwide making this species an important target of control. We evaluated a mosquito control ...
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Influence of public hesitancy and receptivity on reactive behaviours towards releases of male Wolbachia-Aedes mosquitoes for dengue control

M. O. Lwin, Z. Ong, C. Panchapakesan, A. Sheldenkar, L. T. Soh, I. Chen, X. Li, W. Niah, K. Vasquez, S. Sim and L.-C. Ng,  PLOS Neglected Tropical Diseases,  16:e0010910. 2022.
Singapore, a highly urbanized Asian tropical country that experiences periodic dengue outbreaks, is piloting field releases of male Wolbachia-carrying Aedes aegyptimosquitoes with the aim of suppressing urban populations of the primary dengue vector Aedes aegypti. This study ...
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Wolbachia inhibits ovarian formation and increases blood feeding rate in female Aedes aegypti

M.-J. Lau, P. A. Ross, N. M. Endersby-Harshman, Q. Yang and A. A. Hoffmann,  PLOS Neglected Tropical Diseases,  16:e0010913. 2022.
Author summary Wolbachia bacteria reduce the transmission of dengue and other arboviruses transmitted by their mosquito hosts once they have invaded host populations. This invasion process is being undertaken in Aedes aegypti mosquito populations throughout the world but can be ...
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Hidden endosymbionts: A male-killer concealed by another endosymbiont and a nuclear suppressor

K. M. Richardson, P. A. Ross, B. S. Cooper, W. R. Conner, T. Schmidt and A. A. Hoffmann,  bioRxiv,  2022.10.19.512817. 2022.
Maternally transmitted endosymbiotic bacteria that cause male killing (MK) have only been described from a few insects, but this may reflect challenges in their detection rather than a rarity of MK. Here we identify MK Wolbachia in populations of Drosophila pseudotakahashii, ...
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Wolbachia Biology, Mechanisms and Applications 2022

David O'Brochta,  GeneConvene Global Collaborative,  2022.
Intracellular and extracellular symbiotic/commensal bacteria have enormous potential when manipulated and deployed appropriately to serve as agents of control of insects and the pathogens they transmit. Wolbachia, an intracellular bacteria, is a well studied system and one that ...
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Wolbachia wAlbB inhibit dengue and Zika infection in the mosquito Aedes aegypti with an Australian background

L. E. Hugo, G. Rašić, A. J. Maynard, L. Ambrose, C. Liddington, C. J. E. Thomas, N. S. Nath, M. Graham, C. Winterford, B. M. C. R. Wimalasiri-Yapa, Z. Xi, N. W. Beebe and G. J. Devine,  PLOS Neglected Tropical Diseases,  16:e0010786. 2022.
Biological control of mosquito vectors using the endosymbiotic bacteria Wolbachia is an emerging strategy for the management of human arboviral diseases. We recently described the development of a strain of Aedes aegypti infected with the Wolbachia strain wAlbB (referred to as ...
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Risk Assessment on the Release of Wolbachia-Infected Aedes aegypti in Yogyakarta, Indonesia

D. Buchori, A. Mawan, I. Nurhayati, A. Aryati, H. Kusnanto and U. K. Hadi,  Insects,  13. 2022.
Wolbachia-infected Aedes aegypti is the latest technology that was developed to eliminate dengue fever. The Ministry of Research and Technology of the Republic of Indonesia (Kemenristekdikti) established an expert group to identify future potential risks that may occur over a ...
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Wolbachia-Virus interactions and arbovirus control through population replacement in mosquitoes

T. H. Ant, M. V. Mancini, C. J. McNamara, S. M. Rainey and S. P. Sinkins,  Pathogens and Global Health,  2022.
Following transfer into the primary arbovirus vector Aedes aegypti, several strains of the intracellular bacterium Wolbachia have been shown to inhibit the transmission of dengue, Zika, and chikungunya viruses, important human pathogens that cause significant morbidity and ...
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Fitness costs of Wolbachia shift in locally-adapted Aedes aegypti mosquitoes

P. A. Ross and A. A. Hoffmann,  Environmental Microbiology,  2022.
Aedes aegypti mosquito eggs can remain quiescent for many months before hatching, allowing populations to persist through unfavorable conditions. Aedes aegypti infected with the Wolbachia strain wMel have been released in tropical and subtropical regions for dengue control. wMel ...
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Distribution of sex ratio distorters in natural populations of the isopod Armadillidium vulgare

,  2022.

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Externalities modulate the effectiveness of the Wolbachia release programme

E. E. Ooi and A. Wilder-Smith,  The Lancet Infectious Diseases,  2022.
Despite the remarkable outcome in Yogyakarta, the wMel approach also has some challenges. In particular, the extent to which ecological, weather, and other external factors influence the dissemination and establishment of wMel in complex urban environments remains unclear. ...
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The Involvement of Atlastin in Dengue Virus and Wolbachia Infection in Aedes aegypti and Its Regulation by aae-miR-989

M. Hussain, T. Bradshaw, M. Lee and S. Asgari,  Microbiology Spectrum,  2022.
Endoplasmic reticulum (ER)-shaping atlastin proteins (ATLs) have been demonstrated to play a functional role during flavivirus replication in mammalian cells. For dengue virus (DENV), atlastin is required in the formation of the replication organelles and RNA replication, virion ...
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Wolbachia action in the sperm produces developmentally deferred chromosome segregation defects during the Drosophila mid-blastula transition

B. Warecki, S. W. A. Titen, M. S. Alam, G. Vega, N. Lemseffer, K. Hug, et al.,  eLife,  11:e81292. 2022.
Wolbachia, a vertically transmitted endosymbiont infecting many insects, spreads rapidly through uninfected populations by a mechanism known as cytoplasmic incompatibility (CI). In CI, a paternally delivered modification of the sperm leads to chromatin defects and lethality ...
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Wolbachia strain wAlbB remains stable in Aedes aegypti over 15 years but exhibits genetic background-dependent variation in virus blocking

X. Liang, C. H. Tan, Q. Sun, M. Zhang, P. J. Wong, M. I. Li, et al.,  PNAS Nexus,  2022.
The ability of the maternally transmitted endosymbiotic bacterium Wolbachia to induce cytoplasmic incompatibility (CI) and virus blocking makes it a promising weapon for combatting mosquito-borne diseases through either suppression or replacement of wild-type populations. Recent ...
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Genome sequencing and comparative analysis of Wolbachia strain wAlbA reveals Wolbachia-associated plasmids are common

J. Martinez, T. H. Ant, S. M. Murdochy, L. Tong, A. da Silva Filipe and S. P. Sinkins,  PLOS Genetics,  18:e1010406. 2022.
Wolbachia is the most common bacterial symbiont of arthropods, being found in about half of terrestrial species around the globe. It is transmitted from mother to offspring, can spread rapidly by inducing various forms of reproductive parasitism and often provides protection ...
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Bill Gates’ Colombian Mosquito Factory Breeding 30 Million Bacteria-Infected Mosquitos Per Week

anonymous,  GREATGAMEINDIA,  2022.
Bill Gates’ Colombian ‘mosquito factory’ is breeding 30 million bacteria-infected mosquitos per week. The project’s objective appears to be to introduce Wolbachia into native mosquito populations by employing lab-bred mosquitoes, resulting in the infection of such ...
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Modified mosquito releases to fight dengue fever, chikungunya or yellow fever

Sewell, Tammy,  OICANADIAN,  2022.
To date, only one technique based on genetically modified mosquitoes has been developed at an operational level, it is the RIDL technique (release of insects carrying a dominant lethal gene, or release of insects carrying a dominant lethality gene). Male mosquitoes which, unlike ...
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An optimal control problem for dengue transmission model with Wolbachia and vaccination

J. Zhang, L. L. Liu, Y. Z. Li and Y. Wang,  Communications In Nonlinear Science and Numerical Simulation,  116. 2022.
The release of Wolbachia-infected mosquitoes into the wild mosquitoes population is an excellent biological control strategy which can be effective against mosquito-borne infections. In this work, we propose a dengue transmission model that incorporates releasing Wolbachia into ...
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Bacterial supergroup-specific “cost” of Wolbachia infections in Nasonia vitripennis

A. Tiwary, R. Babu, R. Sen and R. Raychoudhury,  Ecology and Evolution,  2022.
Abstract The maternally inherited endosymbiont, Wolbachia, is known to alter the reproductive biology of its arthropod hosts for its own benefit and can induce both positive and negative fitness effects in many hosts. Here, we describe the effects of the maintenance of two ...
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Call for public consultation ̶ Development of Target Product Profiles (TPPs) for Wolbachia infected Aedes aegypti population replacement intervention

World Health Organization,  WHO,  2022.
WHO aims to reduce the global burden of dengue by 25% by 2030. To reach this goal, it is imperative to provide control programmes with sustainable vector control tools. Wolbachia, a symbiotic bacterium that occurs naturally in many insects, has been successfully transferred into ...
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Comparative Ubiquitome Analysis Reveals Deubiquitinating Effects Induced by Wolbachia Infection in Drosophila melanogaster

Q. Zong, B. Mao, H. B. Zhang, B. Wang, W. J. Yu, Z. W. Wang and Y. F. Wang,  International Journal Molecular Science,  23. 2022.
The endosymbiotic Wolbachia bacteria frequently cause cytoplasmic incompatibility (CI) in their insect hosts, where Wolbachia-infected males cross with uninfected females, leading to no or fewer progenies, indicating a paternal modification by Wolbachia. Recent studies have ...
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Effect of Wolbachia Infection and Adult Food on the Sexual Signaling of Males of the Mediterranean Fruit Fly Ceratitis capitata

G. A. Kyritsis, P. Koskinioti, K. Bourtzis and N. T. Papadopoulos,  Insects,  13. 2022.
Sexual signaling is a fundamental component of sexual behavior of Ceratitis capitata that highly determines males' mating success. Nutritional status and age are dominant factors known to affect males' signaling performance and define the female decision to accept a male as a ...
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Changing mosquito genes, spreading bacteria: Science sees success vs dengue

C. E. Baclig,  INQUIRER.NET,  2022.
Wolbachia, according to WMP, are extremely common bacteria that occur naturally in 50 percent of insect species, including mosquitoes, fruit flies, moths, dragonflies, and butterflies. Aedes aegypti or dengue-carrying mosquitoes, however, do not normally carry Wolbachia. Studies ...
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Studies on the fitness characteristics of wMel- and wAlbB-introgressed Aedes aegypti (Pud) lines in comparison with wMel- and wAlbB-transinfected Aedes aegypti (Aus) and wild-type Aedes aegypti (Pud) lines

C. Sadanandane, K. Gunasekaran, D. Panneer, S. K. Subbarao, M. Rahi, B. Vijayakumar, V. Athithan, A. Sakthivel, S. Dinesh and P. Jambulingam,  Frontiers in Microbiology,  13:947857. 2022.
Wolbachia, an intracellular maternally transmitted endosymbiont, has been shown to interfere with the replication of dengue virus in Aedes aegypti mosquitoes. The Wolbachia-transinfected Ae. aegypti has been currently released in many countries to test its effectiveness in ...
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Wolbachia wPip Blocks Zika Virus Transovarial Transmission in Aedes albopictus

Y. Guo, J. Guo, Y. Li, X. Zheng and Y. Wu,  Microbiol Spectrum,  e0263321. 2022.
Area-wide application of Wolbachia to suppress mosquito populations and their transmitted viruses has achieved success in multiple countries. However, the mass release of Wolbachia-infected male mosquitoes involves a potential risk of accidentally releasing fertile females. In ...
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Developing Wolbachia-based disease interventions for an extreme environment

P. A. Ross, S. Elfekih, S. Collier, M. J. Klein, S. S. Lee, M. Dunn, S. Jackson, Y. Zhang, J. K. Axford, X. Gu, M. S. Nasar, P. N. Paradkar, E. A. Taoufik, F. M. Jiggins, A. M. Almalik, M. B. Al-Fageeh and A. A. Hoffmann,  bioRxiv,  2022.07.26.501527. 2022.
Aedes aegypti mosquitoes carrying self-spreading, virus-blocking Wolbachia bacteria are being deployed to suppress dengue transmission. However, there are challenges in applying this technology in extreme environments. We introduced two Wolbachia strains into Ae. aegypti from ...
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Lack of robust evidence for a Wolbachia infection in Anopheles gambiae from Burkina Faso

S. P. Sawadogo, D. A. Kabore, E. B. Tibiri, A. Hughes, O. Gnankine, S. Quek, A. Diabaté, H. Ranson, G. L. Hughes and R. K. Dabiré,  Medical and Veterinary Entomology,  2022.
The endosymbiont Wolbachia can have major effects on the reproductive fitness, and vectorial capacity of host insects and may provide new avenues to control mosquito-borne pathogens. Anopheles gambiae s.l is the major vector of malaria in Africa but the use of Wolbachia in this ...
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Attempts to use breeding approaches in Aedes aegypti to create lines with distinct and stable relative Wolbachia densities

A. J. Mejia, L. Jimenez, H. L. C. Dutra, R. Perera and E. A. McGraw,  Heredity,  2022.
Wolbachia is an insect endosymbiont being used for biological control in the mosquito Aedes aegypti because it causes cytoplasmic incompatibility (CI) and limits viral replication of dengue, chikungunya, and Zika viruses. While the genetic mechanism of pathogen blocking (PB) is ...
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Sensitivity of wMel and wAlbB Wolbachia infections in Aedes aegypti Puducherry (Indian) strains to heat stress during larval development

K. Gunasekaran, C. Sadanandane, D. Panneer, A. Kumar, M. Rahi, S. Dinesh, B. Vijayakumar, M. Krishnaraja, S. K. Subbarao and P. Jambulingam,  Parasites and Vectors,  15:221. 2022.
BACKGROUND: ICMR-Vector Control Research Centre, Puducherry, India, developed two colonies of Aedes aegypti infected with wMel and wAlbB Wolbacia strains called Ae. aegypti (Pud) lines for dengue control. The sensitivity of wMel and wAlbB strains in Ae. aegypti (Pud) lines to ...
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Natural and Engineered Sex Ratio Distortion in Insects

A. Compton and Z. Tu,  Frontiers in Ecology and Evolution,  10. 2022.
Insects have evolved highly diverse genetic sex-determination mechanisms and a relatively balanced male to female sex ratio is generally expected. However, selection may shift the optimal sex ratio while meiotic drive and endosymbiont manipulation can result in sex ratio ...
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Male-killing-associated bacteriophage WO identified from comparisons of Wolbachia endosymbionts of Homona magnanima

H. Arai, H. Anbutsu, Y. Nishikawa, M. Kogawa, K. Ishii, M. Hosokawa, S.-R. Lin, M. Ueda, M. Nakai, Y. Kunimi, T. Harumoto, D. Kageyama, H. Takeyama and M. N. Inoue,  bioRxiv,  2022.
The origin and mechanism of male-killing, an advantageous strategy employed by maternally transmitted symbionts such as Wolbachia, remain unclear. We compared genomes of four Wolbachia strains derived from Homona magnanima, a male-killing strain wHm-t (1.5 Mb), and three ...
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Mosquito control to save Hawaiian honeycreepers does not involve GMOs

Department of Land and Natural Resources,  Hawaii Department of Land and Natural Resources,  2022.
Despite misinformation circulating on social media, the importation of “incompatible-male” mosquitoes to control populations of wild mosquitoes and to save four native bird species from extinction, does not involve the use of any genetically modified organisms (GMOs) or ...
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Modifying mosquitoes to suppress disease transmission: Is the long wait over?

J. R. Powell,  Genetics,  2022.
For more than 50 years it has been a dream of medical entomologists and public health workers to control diseases like malaria and dengue fever by modifying, through genetics and other methods, the arthropods that transmit them to humans. A brief synopsis of the history of ...
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Wolbachia interacts with the microbiome to shape fitness-associated traits during seasonal adaptation in Drosophila melanogaster

L. P. Henry, M. Fernandez, S. Wolf and J. Ayroles,  bioRxiv,  2022.05.31.494239. 2022.
The microbiome contributes to many different host traits, but its role in host adaptation remains enigmatic. The fitness benefits of the microbiome often depend on ecological conditions, but fluctuations in both the microbiome and environment modulate these fitness benefits. ...
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Reply to: Assessing the efficiency of Verily’s automated process for production and release of male Wolbachia-infected mosquitoes

J. E. Crawford, K. C. Hopkins, A. Buchman, T. Zha, P. Howell, E. Kakani, J. R. Ohm, N. Snoad, L. Upson, J. Holeman, P. Massaro, S. L. Dobson, F. S. Mulligan and B. J. White,  Nature Biotechnology,  2022.
We appreciate the comments from Bouyer et al. under their mandate as a United Nations agency program (‘to promote the safe and appropriate use of nuclear techniques and related technologies in food and agriculture’) on our paper1 . The centuries-old fight against ...
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Assessing the efficiency of Verily’s automated process for production and release of male Wolbachia-infected mosquitoes

J. Bouyer, H. Maiga and M. J. B. Vreysen,  Nature Biotechnology,  2022.
A paper by Crawford et al.1 titled ‘Efficient production of male Wolbachia-infected Aedes aegypti mosquitoes enables large-scale suppression of wild populations’ reports a mosquito control suppression trial carried out from2017 to 2018 in Fresco Country, California, USA1 . ...
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Perplexing dynamics of Wolbachia proteins for cytoplasmic incompatibility

T. Harumoto and T. Fukatsu,  PLOS Biology,  20:e3001644. 2022.