Zophobas morio isolate:Zm_QZ_1
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ABSTRACT:
PROVIDER: PRJNA1154464 | ENA |
REPOSITORIES: ENA
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Project description:Insects that are small or exhibit low metabolic rates are considered to not require active ventilation to augment diffusive gas exchange. Some pupae with low metabolic rates exhibit abdominal pumping, a behaviour that is known to drive tracheal ventilation in the adults of many species. However, previous work on pupae suggests that abdominal pumping may serve a non-respiratory role. To study the role of abdominal pumping in pupa of the beetle Zophobas morio, we visualized tracheal dynamics with X-rays while simultaneously measuring haemolymph pressure, abdominal movement, and CO2 emission. Pupae exhibited frequent tracheal compressions that were coincident with both abdominal pumping and pulsation of pressure in the haemolymph. However, more than 63% of abdominal pumping events occurred without any tracheal collapse and hence ventilation, suggesting that the major function of the abdominal pump is not respiratory. In addition, this study shows that the kinematics of abdominal pumping can be used to infer the status of the spiracles and internal behaviour of the tracheal system.
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Project description:Zophobas morio (=Zophobas atratus) and Tenebrio molitor are darkling beetles with industrial importance due to their use as feeder insects and their apparent ability to biodegrade plastics. High quality genome assemblies were recently reported for both species. Here, we report additional independent Z. morio and T. molitor genome assemblies generated from Nanopore and Illumina data. Following scaffolding against the published genomes, haploid assemblies of 462 Mb (scaffold N90 of 16.8 Mb) and 258 Mb (scaffold N90 of 5.9 Mb) were produced for Z. morio and T. molitor, respectively. Gene prediction led to the prediction of 28,544 and 19,830 genes for Z. morio and T. molitor, respectively. Benchmarking Universal Single Copy Orthologs (BUSCO) analyses suggested that both assemblies have a high level of completeness; 91.5 and 89.0% of the BUSCO endopterygota marker genes were complete in the Z. morio assembly and proteome, respectively, while 99.1 and 92.8% were complete in the T. molitor assembly and proteome, respectively. Phylogenomic analyses of four genera from the family Tenebrionidae yielded phylogenies consistent with those previously constructed based on mitochondrial genomes. Synteny analyses revealed large stretches of macrosynteny across the family Tenebrionidae, as well as numerous within-chromosome rearrangements. Finally, orthogroup analysis identified ∼28,000 gene families across the family Tenebrionidae, of which 8,185 were identified in all five of the analyzed species, and 10,837 were conserved between Z. morio and T. molitor. We expect that the availability of multiple whole genome sequences for Z. morio and T. molitor will facilitate population genetics studies to identify genetic variation associated with industrially relevant phenotypes.
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Project description:Coliforms and Staphylococcus spp. infections are the leading causes of bovine mastitis. Despite extensive research and development in antibiotics, they have remained inadequately effective in treating bovine mastitis induced by multiple pathogen infection. In the present study, we showed the protective effect of Zophobas morio (Z. morio) hemolymph on bovine mammary epithelial cells against bacterial infection. Z. morio hemolymph directly kills both Gram-positive and Gram-negative bacteria through membrane permeation and prevents the adhesion of E. coli or the clinically isolated S. simulans strain to bovine mammary epithelial (MAC-T) cells. In addition, Z. morio hemolymph downregulates the expression of nucleotide-binding oligomerization domain (NOD)-like receptor family member pyrin domain-containing protein 3 (NLRP3), caspase-1, and NLRP6, as well as inhibits the secretion of interleukin-1β (IL-1β) and IL-18, which attenuates E. coli or S. simulans-induced pyroptosis. Overall, our results suggest the potential role of Z. morio hemolymph as a novel therapeutic candidate for bovine mastitis.
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