journal
https://read.qxmd.com/read/33339514/geographic-distribution-of-sex-chromosome-polymorphism-in-anastrepha-fraterculus-sp-1-from-argentina
#1
JOURNAL ARTICLE
María Cecilia Giardini, Mariela Nieves, Alejandra Carla Scannapieco, Claudia Alejandra Conte, Fabián Horacio Milla, María Elena Schapovaloff, Maria Soledad Frissolo, María Isabel Remis, Jorge Luis Cladera, Silvia Beatriz Lanzavecchia
BACKGROUND: Anastrepha fraterculus is recognized as a quarantine pest in several American countries. This fruit fly species is native to the American continent and distributed throughout tropical and subtropical regions. It has been reported as a complex of cryptic species, and at least eight morphotypes have been described. Only one entity of this complex, formerly named Anastrepha fraterculus sp. 1, is present in Argentina. Previous cytogenetic studies on this morphotype described the presence of sex chromosome variation identified by chromosomal size and staining patterns...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339513/development-and-characterization-of-a-pupal-colour-based-genetic-sexing-strain-of-anastrepha-fraterculus-sp-1-diptera-tephritidae
#2
JOURNAL ARTICLE
José S Meza, Kostas Bourtzis, Antigone Zacharopoulou, Angeliki Gariou-Papalexiou, Carlos Cáceres
BACKGROUND: Area-wide integrated pest management programs (AW-IPM) incorporating sterile insect technique (SIT) have been successful in suppressing populations of different fruit fly species during the last six decades. In addition, the development of genetic sexing strains (GSS) for different fruit fly species has allowed for sterile male-only releases and has significantly improved the efficacy and cost effectiveness of the SIT applications. The South American Fruit Fly Anastrepha fraterculus (Diptera: Tephritidae) is a major agricultural pest attacking several fruit commodities...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339511/improvement-on-the-genetic-engineering-of-an-invasive-agricultural-pest-insect-the-cherry-vinegar-fly-drosophila-suzukii
#3
JOURNAL ARTICLE
Hassan M M Ahmed, Fabienne Heese, Ernst A Wimmer
BACKGROUND: The invasive fly Drosophila suzukii has become an established fruit pest in Europe, the USA, and South America with no effective and safe pest management. Genetic engineering enables the development of transgene-based novel genetic control strategies against insect pests and disease vectors. This, however, requires the establishment of reliable germline transformation techniques. Previous studies have shown that D. suzukii is amenable to transgenesis using the transposon-based vectors piggyBac and Minos, site-specific recombination (lox/Cre), and CRISPR/Cas9 genome editing...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339510/precise-single-base-substitution-in-the-shibire-gene-by-crispr-cas9-mediated-homology-directed-repair-in-bactrocera-tryoni
#4
JOURNAL ARTICLE
Amanda Choo, Elisabeth Fung, Isabel Y Chen, Robert Saint, Peter Crisp, Simon W Baxter
BACKGROUND: Pest eradication using the Sterile Insect Technique (SIT) involves high-density releases of sterilized males that mate with wild females and ultimately suppress the population. Sterilized females are not required for SIT and their removal or separation from males prior to release remains challenging. In order to develop genetic sexing strains (GSS), conditional traits such as temperature sensitive lethality are required. RESULTS: Here we introduce a known Drosophila melanogaster temperature sensitive embryonic lethal mutation into Bactrocera tryoni, a serious horticultural pest in Australia...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339509/climate-stress-resistance-in-male-queensland-fruit-fly-varies-among-populations-of-diverse-geographic-origins-and-changes-during-domestication
#5
JOURNAL ARTICLE
Ángel-David Popa-Báez, Siu Fai Lee, Heng Lin Yeap, Shirleen S Prasad, Michele Schiffer, Roslyn G Mourant, Cynthia Castro-Vargas, Owain R Edwards, Phillip W Taylor, John G Oakeshott
BACKGROUND: The highly polyphagous Queensland fruit fly (Bactrocera tryoni Froggatt) expanded its range substantially during the twentieth century and is now the most economically important insect pest of Australian horticulture, prompting intensive efforts to develop a Sterile Insect Technique (SIT) control program. Using a "common garden" approach, we have screened for natural genetic variation in key environmental fitness traits among populations from across the geographic range of this species and monitored changes in those traits induced during domestication...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339507/genetic-structure-and-symbiotic-profile-of-worldwide-natural-populations-of-the-mediterranean-fruit-fly-ceratitis-capitata
#6
JOURNAL ARTICLE
Katerina Nikolouli, Antonios A Augustinos, Panagiota Stathopoulou, Elias Asimakis, Anastasios Mintzas, Kostas Bourtzis, George Tsiamis
BACKGROUND: The Mediterranean fruit fly, Ceratitis capitata, is a cosmopolitan agricultural pest of worldwide economic importance and a model for the development of the Sterile Insect Technique (SIT) for fruit flies of the Tephritidae family (Diptera). SIT relies on the effective mating of laboratory-reared strains and natural populations, and therefore requires an efficient mass-rearing system that will allow for the production of high-quality males. Adaptation of wild flies to an artificial laboratory environment can be accompanied by negative effects on several life history traits through changes in their genetic diversity and symbiotic communities...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339506/building-a-transgenic-sexing-strain-for-genetic-control-of-the-australian-sheep-blow-fly-lucilia-cuprina-using-two-lethal-effectors
#7
JOURNAL ARTICLE
Ying Yan, Maxwell J Scott
BACKGROUND: The sterile insect technique (SIT) has been successfully used in many pest management programs worldwide. Some SIT programs release both sexes due to the lack of genetic sexing strains or efficient sex separation methods but sterile females are ineffective control agents. Transgenic sexing strains (TSS) using the tetracycline-off control system have been developed in a variety of insect pests, from which females die by either of two commonly used lethal effectors: overexpression of the transcription factor tetracycline transactivator (tTA) or ectopic expression of a proapoptotic gene, such as head involution defective (hid)...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339505/transcriptome-analysis-of-anastrepha-fraterculus-sp-1-males-females-and-embryos-insights-into-development-courtship-and-reproduction
#8
JOURNAL ARTICLE
Alejandra Carla Scannapieco, Claudia Alejandra Conte, Máximo Rivarola, Juan Pedro Wulff, Irina Muntaabski, Andrés Ribone, Fabián Milla, Jorge Luis Cladera, Silvia Beatriz Lanzavecchia
BACKGROUND: Anastrepha fraterculus sp. 1 is considered a quarantine pest in several American countries. Since chemical control applied in an integrated pest management program is the only strategy utilized against this pest, the development of pesticide-free methods, such as the Sterile Insect Technique, is being considered. The search for genes involved in sex-determination and differentiation, and in metabolic pathways associated with communication and mating behaviour, contributes with key information to the development of genetic control strategies...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339503/irradiation-induced-inversions-suppress-recombination-between-the-m-locus-and-morphological-markers-in-aedes-aegypti
#9
JOURNAL ARTICLE
Antonios A Augustinos, Muhammad Misbah-Ul-Haq, Danilo O Carvalho, Lucia Duran de la Fuente, Panagiota Koskinioti, Kostas Bourtzis
BACKGROUND: Aedes aegypti is the primary vector of arthropod-borne viruses and one of the most widespread and invasive mosquito species. Due to the lack of efficient specific drugs or vaccination strategies, vector population control methods, such as the sterile insect technique, are receiving renewed interest. However, availability of a reliable genetic sexing strategy is crucial, since there is almost zero tolerance for accidentally released females. Development of genetic sexing strains through classical genetics is hindered by genetic recombination that is not suppressed in males as is the case in many Diptera...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339502/joint-fao-iaea-coordinated-research-project-on-comparing-rearing-efficiency-and-competitiveness-of-sterile-male-strains-produced-by-genetic-transgenic-or-symbiont-based-technologies
#10
EDITORIAL
Kostas Bourtzis, Carlos Cáceres, Marc F Schetelig
No abstract text is available yet for this article.
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339501/an-early-female-lethal-system-of-the-new-world-screwworm-cochliomyia-hominivorax-for-biotechnology-enhanced-sit
#11
JOURNAL ARTICLE
Carolina Concha, Ying Yan, Alex Arp, Evelin Quilarque, Agustin Sagel, Adalberto Pérez de León, W Owen McMillan, Steven Skoda, Maxwell J Scott
BACKGROUND: The New World Screwworm fly (NWS), Cochliomyia hominivorax, is an ectoparasite of warm-blooded animals and a major pest of livestock in parts of South America and the Caribbean where it remains endemic. In North and Central America it was eradicated using the Sterile Insect Technique (SIT). A control program is managed cooperatively between the governments of the United States and Panama to prevent the northward spread of NWS from infested countries in South America. This is accomplished by maintaining a permanent barrier through the release of millions of sterile male and female flies in the border between Panama and Colombia...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339500/identification-and-characterization-of-four-drosophila-suzukii-cellularization-genes-and-their-promoters
#12
JOURNAL ARTICLE
Ying Yan, Syeda A Jaffri, Jonas Schwirz, Carl Stein, Marc F Schetelig
BACKGROUND: The spotted-wing Drosophila (Drosophila suzukii) is a widespread invasive pest that causes severe economic damage to fruit crops. The early development of D. suzukii is similar to that of other Drosophilids, but the roles of individual genes must be confirmed experimentally. Cellularization genes coordinate the onset of cell division as soon as the invagination of membranes starts around the nuclei in the syncytial blastoderm. The promoters of these genes have been used in genetic pest-control systems to express transgenes that confer embryonic lethality...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339499/comparative-genomics-of-klebsiella-michiganensis-bd177-and-related-members-of-klebsiella-sp-reveal-the-symbiotic-relationship-with-bactrocera-dorsalis
#13
JOURNAL ARTICLE
Zhaohui Cai, Qiongyu Guo, Zhichao Yao, Wenping Zheng, Junfei Xie, Shuai Bai, Hongyu Zhang
BACKGROUND: Bactrocera dorsalis is a destructive polyphagous and highly invasive insect pest of tropical and subtropical species of fruit and vegetable crops. The sterile insect technique (SIT) has been used for decades to control insect pests of agricultural, veterinary, and human health importance. Irradiation of pupae in SIT can reduce the ecological fitness of the sterile insects. Our previous study has shown that a gut bacterial strain BD177 that could restore ecological fitness by promoting host food intake and metabolic activities...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339498/separating-two-tightly-linked-species-defining-phenotypes-in-bactrocera-with-hybrid-recombinant-analysis
#14
JOURNAL ARTICLE
Heng Lin Yeap, Siu Fai Lee, Freya Robinson, Roslyn G Mourant, John A Sved, Marianne Frommer, Alexie Papanicolaou, Owain R Edwards, John G Oakeshott
BACKGROUND: Bactrocera tryoni and Bactrocera neohumeralis mate asynchronously; the former mates exclusively around dusk while the latter mates during the day. The two species also differ in the colour of the post-pronotal lobe (callus), which is predominantly yellow in B. tryoni and brown in B. neohumeralis. We have examined the genetic relationship between the two characters in hybrids, backcrosses and multigeneration hybrid progeny. RESULTS: Our analysis of the mating time of the parental species revealed that while B...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339497/the-hat-family-transposable-element-hopper-from-bactrocera-dorsalis-is-a-functional-vector-for-insect-germline-transformation
#15
JOURNAL ARTICLE
Alfred M Handler, Marc F Schetelig
BACKGROUND: The hopper hAT-family transposable element isolated from the Oriental fruit fly, Bactrocera dorsalis, is distantly related to both the Drosophila hobo element and the Activator element from maize. The original 3120 bp hopperBd-Kah element isolated from the Kahuku wild-type strain was highly degenerate and appeared to have a mutated transposase and terminal sequences, while a second 3131 bp element, hopperBd-we , isolated from a white eye mutant strain had an intact transposase reading frame and terminal sequences consistent with function...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339496/targeting-the-autosomal-ceratitis-capitata-transformer-gene-using-cas9-or-dcas9-to-masculinize-xx-individuals-without-inducing-mutations
#16
JOURNAL ARTICLE
Pasquale Primo, Angela Meccariello, Maria Grazia Inghilterra, Andrea Gravina, Giuseppe Del Corsano, Gennaro Volpe, Germano Sollazzo, Serena Aceto, Mark D Robinson, Marco Salvemini, Giuseppe Saccone
BACKGROUND: Females of the Mediterranean fruit fly Ceratitis capitata (Medfly) are major agricultural pests, as they lay eggs into the fruit crops of hundreds of plant species. In Medfly, female sex determination is based on the activation of Cctransformer (Cctra). A maternal contribution of Cctra is required to activate Cctra itself in the XX embryos and to start and epigenetically maintain a Cctra positive feedback loop, by female-specific alternative splicing, leading to female development...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339494/transcribed-sex-specific-markers-on-the-y-chromosome-of-the-oriental-fruit-fly-bactrocera-dorsalis
#17
JOURNAL ARTICLE
Davide Carraretto, Nidchaya Aketarawong, Alessandro Di Cosimo, Mosè Manni, Francesca Scolari, Federica Valerio, Anna R Malacrida, Ludvik M Gomulski, Giuliano Gasperi
BACKGROUND: The Oriental fruit fly, Bactrocera dorsalis, is a highly polyphagous invasive species with a high reproductive potential. In many tropical and subtropical parts of the world it ranks as one of the major pests of fruits and vegetables. Due to its economic importance, genetic, cytogenetic, genomic and biotechnological approaches have been applied to understand its biology and to implement the Sterile Insect Technique, currently a part of area-wide control programmes against this fly...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339493/genetic-stability-genetic-variation-and-fitness-performance-of-the-genetic-sexing-salaya1-strain-for-bactrocera-dorsalis-under-long-term-mass-rearing-conditions
#18
JOURNAL ARTICLE
Nidchaya Aketarawong, Siriwan Isasawin, Kamoltip Laohakieat, Sujinda Thanaphum
BACKGROUND: A genetic sexing strain (GSS) is an essential component for pest control using the sterile insect technique (SIT). A GSS is developed using a combination of Y-autosome translocation and a selectable marker such as pupal color, resulting in heterozygous males and homozygous females that possess wild-type brown pupae (wp+ ) and mutant white pupae (wp) alleles, respectively. The genetic sexing Salaya1 strain developed for Bactrocera dorsalis was evaluated using a clean stream and scaled-up for subsequent production lines (e...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33339492/anosmic-flies-what-orco-silencing-does-to-olive-fruit-flies
#19
JOURNAL ARTICLE
Konstantina T Tsoumani, Alexandros Belavilas-Trovas, Maria-Eleni Gregoriou, Kostas D Mathiopoulos
BACKGROUND: The olive fruit fly (Bactrocera oleae) is the most destructive pest of the olive cultivation worldwide causing significant production losses and olive fruit impoverishment, as its larvae feed exclusively on the olive fruit. Reproductive and sexual behavior, as well as host-plant recognition of the fly, are highly dependent on its chemosensory system. Therefore, exploring the role of genes that play a critical role in olfaction, could reveal potential molecular targets that determine species-specific features on chemical communication and could be used to impair sexual behavior...
December 18, 2020: BMC Genetics
https://read.qxmd.com/read/33287693/targeted-generation-of-polyploids-in-hydrangea-macrophylla-through-cross-based-breeding
#20
JOURNAL ARTICLE
Conny Tränkner, Kristina Günther, Peter Sahr, Frauke Engel, Annette Hohe
BACKGROUND: Up to now, diploid and triploid cultivars were reported for the ornamental crop Hydrangea macrophylla. Especially, the origin of triploids and their crossing behaviors are unknown, but the underlying mechanisms are highly relevant for breeding polyploids. RESULTS: By screening a cultivar collection, we identified diploid, triploid, tetraploid and even aneuploid H. macrophylla varieties. The pollen viability of triploids and tetraploids was comparable to that of diploids...
December 7, 2020: BMC Genetics
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