Comparative analysis of the immune system of an invasive bark beetle, Dendroctonus valens, infected by an entomopathogenic fungus

2018 ◽  
Vol 88 ◽  
pp. 65-69 ◽  
Author(s):  
Letian Xu ◽  
Yiqiu Zhang ◽  
Shihan Zhang ◽  
Jundan Deng ◽  
Min Lu ◽  
...  
Keyword(s):  
Immune System ◽  
Comparative Analysis ◽  
Bark Beetle ◽  
Entomopathogenic Fungus ◽  
Dendroctonus Valens

scholarly journals Comparative analysis of single cell lung atlas of bat, cat, tiger and pangolin

2021 ◽  
Author(s):  
Xiran Wang ◽  
Zhihua Ou ◽  
Peiwen Ding ◽  
Chengcheng Sun ◽  
Daxi Wang ◽  
...  
Keyword(s):  
Immune System ◽  
Comparative Analysis ◽  
Single Cell ◽  
Animal Species ◽  
Respiratory Viruses ◽  
Virus Infections ◽  
Species Comparison ◽  
Transcriptomic Data ◽  
Horseshoe Bat ◽  
Horseshoe Bats

Horseshoe bats (Rhinolophus sinicus) might help maintain coronaviruses severely affecting human health, such as SARS-CoV and SARS-CoV-2. It has long been suggested that bats may be more tolerant of viral infection than other mammals due to their unique immune system, but the exact mechanism remains to be fully explored. During the COVID-19 pandemic, multiple animal species were diseased by SARS-CoV-2 infection, especially in the respiratory system. Herein, single-cell transcriptomic data of the lungs of a horseshoe bat, a cat, a tiger, and a pangolin were generated. The receptor distribution of twenty-eight respiratory viruses belonging to fourteen viral families were characterized for the four species. Comparison on the immune-related transcripts further revealed limited cytokine activations in bats, which might explain the reason why bats experienced only mild diseases or even no symptoms upon virus infection. Our findings might increase our understanding of the immune background of horseshoe bats and their insensitivity to virus infections.

scholarly journals Nonhost Angiosperm Volatiles and Verbenone Protect Individual Ponderosa Pines from Attack by Western Pine Beetle and Red Turpentine Beetle (Coleoptera: Curculionidae, Scolytinae)

2008 ◽  
Vol 23 (1) ◽  
pp. 40-45 ◽  
Author(s):  
Christopher J. Fettig ◽  
Christopher P. Dabney ◽  
Stephen R. McKelvey ◽  
Dezene P.W. Huber
Keyword(s):  
Benzyl Alcohol ◽  
Bark Beetle ◽  
Pinus Ponderosa ◽  
Tree Mortality ◽  
Dendroctonus Brevicomis ◽  
First Report ◽  
Western Pine Beetle ◽  
Dendroctonus Valens ◽  
Pine Beetle

Abstract Nonhost angiosperm volatiles (NAV) and verbenone were tested for their ability to protect individual ponderosa pines, Pinus ponderosa Dougl. ex. Laws., from attack by western pine beetle (WPB), Dendroctonus brevicomis LeConte, and red turpentine beetle (RTB), Dendroctonus valens LeConte (Coleoptera: Curculionidae, Scolytinae). A combination of (−)-verbenone and eight NAVs [benzyl alcohol, benzaldehyde, guaiacol, nonanal, salicylaldehyde, (E)-2-hexenal, (E)-2-hexen-1-ol, and (Z)-2-hexen-1-ol] (NAVV) significantly reduced the density of WPB attacks and WPB successful attacks on attractant-baited trees. A significantly higher percentage of pitchouts (unsuccessful WPB attacks) occurred on NAVV-treated trees during two of three sample dates. In addition, significantly fewer RTB attacks were observed on NAVV-treated trees during all sampling dates. The application of NAVV to individual ponderosa pines significantly reduced tree mortality, with only 4 of 30 attractant-baited trees dying from bark beetle attack while 50% mortality (15/30) was observed in the untreated, baited control. To our knowledge, this is the first report establishing the effectiveness of NAVs and verbenone for protecting individual ponderosa pines from WPB attack.

The response of Dendroctonus valens and Temnochila chlorodia to Ips paraconfusus pheromone components and verbenone

2007 ◽  
Vol 139 (1) ◽  
pp. 141-145 ◽  
Author(s):  
Christopher J. Fettig ◽  
Stephen R. McKelvey ◽  
Christopher P. Dabney ◽  
Roberty R. Borys
Keyword(s):  
North America ◽  
Bark Beetle ◽  
Ips Paraconfusus ◽  
Release Rates ◽  
Dendroctonus Valens ◽  
High Release ◽  
Baited Traps ◽  
Pheromone Components ◽  
Temnochila Chlorodia ◽  
Cut Stumps

AbstractThe red turpentine beetle, Dendroctonus valens LeConte, 1860 (Coleoptera: Curculionidae, Scolytinae), is a common bark beetle found throughout much of North America and China. In 2004, we observed that attack densities of the California fivespined ips, Ips paraconfusus Lanier, 1970 (Coleoptera: Curculionidae, Scolytinae), in logging debris were inversely related to D. valens attacks on freshly cut stumps, which led to the demonstration that components of the aggregation pheromone of I. paraconfusus inhibited the response of D. valens to attractant-baited traps. In this study, we test the response of D. valens and Temnochila chlorodia (Mannerheim, 1843) (Coleoptera: Trogositidae), a common bark beetle predator, to racemic ipsenol, racemic ipsdienol, and (−)-cis-verbenol (IPSR) in the presence and absence of two release rates of (−)-verbenone. The addition of a relatively low release rate of (−)-verbenone (4 mg/24 h) to attractant-baited traps did not affect catch and had no significant effect on the response of D. valens to IPSR. IPSR significantly reduced D. valens attraction to baited traps. The addition of high release rates of (−)-verbenone (50 mg/24 h) to IPSR significantly increased inhibition; however, the effect was not significantly different from that observed with (−)-verbenone alone (50 mg/24 h). Temnochila chlorodia was attracted to traps baited with (−)-β-pinene, (+)-3-carene, and (+)-α-pinene. The addition of (−)-verbenone (50 mg/24 h) significantly increased attraction. Traps baited with IPSR caught significantly more T. chlorodia than those baited with (−)-verbenone. Few other beetles were collected. We are hopeful that these results will help facilitate the development of an effective tool for protecting Pinus spp. from D. valens infestations.

scholarly journals Contagious Otherness: Translating Communicable Diseases in the Modern Italian and Francophone Novel

2021 ◽  
Author(s):  
Marta Arnaldi
Keyword(s):  
Immune System ◽  
Comparative Analysis ◽  
Medical Knowledge ◽  
Communicable Diseases ◽  
Translation Theory ◽  
National Cultures ◽  
Contagious Diseases ◽  
Course Of Action

The words contagion ('to touch together') and translation ('to carry across') share a common course of action and meaning, i.e. that of breaking what 'should be joined or joining [what] should be separate' (Douglas, 1996: 113). In a continuous yet imperceptible way, ideas of risk, corruption and error have been attached as much to the transfer of texts, beliefs and theories as to the spread of diseases. Our immune system fight against outsiders, just like national cultures can shield themselves from the foreign. Yet, if we have come to accept that contagion can be understood as a 'foundational concept in the study of [literature], of religion and of society' (Wald, 2007: 2), translation's epidemiological dimensions have remained relatively unexplored. What do the art of translation and epidemiological science have in common, and how can they inform one another? Why is contagion culturally valuable, but physiologically destructive? How can translation theory contribute to the shaping of a novel, biocultural epistemology of contagion? This essay aims to address these questions by shedding light onto the implicit and understudied translation-contagion link. It offers the first comparative analysis of its kind covering three centuries (nineteenth century-present), two languages (French and Italian), and four contagious diseases (plague, smallpox, Ebola and Aids). It provides an interdisciplinary model to approach the study of literature and epidemiology in a synergic, non-exclusive way, one that is based on the double mobilisation, or 'entanglement' (Whitehead et al., 2016), of literary and medical knowledge. 

scholarly journals Comparative analysis of the Pocillopora damicornis genome highlights role of immune system in coral evolution

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
R. Cunning ◽  
R. A. Bay ◽  
P. Gillette ◽  
A. C. Baker ◽  
N. Traylor-Knowles
Keyword(s):  
Immune System ◽  
Comparative Analysis ◽  
Pocillopora Damicornis

scholarly journals Lactobacillus buchneri Genotyping on the Basis of Clustered Regularly Interspaced Short Palindromic Repeat (CRISPR) Locus Diversity

2013 ◽  
Vol 80 (3) ◽  
pp. 994-1001 ◽  
Author(s):  
Alexandra E. Briner ◽  
Rodolphe Barrangou
Keyword(s):  
Immune System ◽  
Comparative Analysis ◽  
Common Origin ◽  
Type Ii ◽  
Crispr Locus ◽  
Content Type ◽  
Lactobacillus Buchneri ◽  
Protospacer Adjacent Motif ◽  
Associated Sequences ◽  
Short Palindromic Repeat

ABSTRACTClustered regularly interspaced short palindromic repeats (CRISPR) in combination with associated sequences (cas) constitute the CRISPR-Cas immune system, which uptakes DNA from invasive genetic elements as novel “spacers” that provide a genetic record of immunization events. We investigated the potential of CRISPR-based genotyping ofLactobacillus buchneri, a species relevant for commercial silage, bioethanol, and vegetable fermentations. Upon investigating the occurrence and diversity of CRISPR-Cas systems inLactobacillus buchnerigenomes, we observed a ubiquitous occurrence of CRISPR arrays containing a 36-nucleotide (nt) type II-A CRISPR locus adjacent to fourcasgenes, including the universalcas1andcas2genes and the type II signature genecas9. Comparative analysis of CRISPR spacer content in 26L. buchneripickle fermentation isolates associated with spoilage revealed 10 unique locus genotypes that contained between 9 and 29 variable spacers. We observed a set of conserved spacers at the ancestral end, reflecting a common origin, as well as leader-end polymorphisms, reflecting recent divergence. Some of these spacers showed perfect identity with phage sequences, and many spacers showed homology toLactobacillusplasmid sequences. Following a comparative analysis of sequences immediately flanking protospacers that matched CRISPR spacers, we identified a novel putative protospacer-adjacent motif (PAM), 5′-AAAA-3′. Overall, these findings suggest that type II-A CRISPR-Cas systems are valuable for genotyping ofL. buchneri.

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