#Nematode-#Virus
LightNews LightNews
currentmedscience.bsky.social
#Nematode-#Virus systems offer a valuable model for uncovering key mechanisms of #VirusHost dynamics and #HostSusceptibility, supporting the development of innovative #AntiviralStrategies. #medsky

To read: link.springer.com/article/10.1...
November 5, 2025 at 10:30 AM
phytopathology.bsky.social
Editor’s Pick: Brandon G. Roy et al. present a first report of a soilborne virus modifying both the RSA of a plant host and transmission by its dagger nematode via a single viral amino acid. Read the open access article: https://doi.org/10.1094/PHYTO-03-25-0105-R
Fig. 6. Possible role of modified root system architecture (RSA) traits of Nicotiana benthamiana in grapevine fanleaf virus (GFLV) transmission by Xiphinema index. Asymptomatic GFLV strains sustain normal RSA, similar to that of noninfected plants, and provide optimal conditions for transmission with large and overlapping root networks. This scenario applies to wild-type GFLV-F13 and mutant GFLV-GHu 1EK802G. Symptomatic GFLV strains elicit perturbations in total root length, root surface area, and root tip number to reduce transmission due to short and non-overlapping root networks. This scenario applies to wild-type GFLV-GHu and mutant GFLV-F13 1EG802K.
September 30, 2025 at 5:15 PM
jxbotany.bsky.social
☠️🥔 RESEARCH 🥔☠️

The potato immune receptor Gpa2 recognises the nematode effector GpRBP-1 in the cytoplasm, but the triggering of plant cell death depends on a balanced nucleocytoplasmic distribution in the cells - Zheng et al.

🔗 doi.org/10.1093/jxb/...

#PlantScience 🧪
Fig. 5 (shortened, full legend in paper): Both RanGAP2 presence and activity are required for a balanced Gpa2 subcellular distribution and for its correct function. Virus-induced gene-silencing with Tobacco rattle virus (TRV) was used to silence RanGAP2 (TRV:: RanGAP2) in N. benthamiana, with TRV::GUS as a negative control. At 3 weeks after silencing, GFP-Gpa2 was transiently expressed in the leaves via agro-infiltration. (A) Confocal images of GFP-Gpa2 localisation in the leaves at 2 days post infiltration (dpi). The images are representative of a total 15 cells that were imaged in three independent experiments. (B) Boxplots of the relative fluorescence intensity ratios between the cytoplasmic pool (C) and the nuclear pool (N) of the control and silenced plants, calculated from the 15 cells that were imaged. (C) Immunoblot of the detection of GFP-Gpa2 at 2 dpi using the anti-GFP antibody (α-GFP).
September 6, 2025 at 12:57 PM
labttofarm.bsky.social
PLPA240 Day-1: Met Professors Antoon Ploeg and Ole Becker, from UC Riverside. Field trials on nematode control: biological nematicides, carrot marketability, anaerobic soil disinfestation with rice hulls; virus risks in potatoes and grapes.
#FieldPlantPathology #UCR #ExtensionAg
August 26, 2025 at 2:48 AM
plosbiology.org
Will a #virus spillover into a new host species lead to dead-end infection or sustained #epidemic? This study uses a nematode-virus model to show that early #spillover traits, especially infection prevalence & shedding, are important predictors of viral persistence @plosbiology.org 🧪 plos.io/3UCnZHp
Top: Experimental design depicting the passage experiment and the methods for quantifying infection prevalence, shedding ability, and infection prevalence in spillover populations. Middle: Host strains are ordered by the number of virus-positive plates over the course of the experiment (positive control C. elegans strain JU1580 set farthest right). Passage 0 denotes the exposure population. Note that the extraction procedure for passage 0 plates was different from the subsequent passages; many adult worms were removed from passage 0 populations to measure infection prevalence, intensity, and shedding (see methods). Bottom: Strains differed in epidemiological characteristics including B) maximum likelihood prevalence of infection, C) infection intensity (corrected median Ct), D) maximum likelihood shedding ability (the probability that 1 infected worm could cause visible fluorescence on a shedding plate), and E) relative susceptibility.
August 22, 2025 at 2:23 PM
plosbiology.org
Will a #virus spillover into a new host species lead to dead-end infection or sustained #epidemic? This study uses a nematode-virus model to show that early #spillover traits, especially infection prevalence & shedding, are important predictors of viral persistence @plosbiology.org 🧪 plos.io/3UCnZHp
Top: Experimental design depicting the passage experiment and the methods for quantifying infection prevalence, shedding ability, and infection prevalence in spillover populations. Middle: Host strains are ordered by the number of virus-positive plates over the course of the experiment (positive control C. elegans strain JU1580 set farthest right). Passage 0 denotes the exposure population. Note that the extraction procedure for passage 0 plates was different from the subsequent passages; many adult worms were removed from passage 0 populations to measure infection prevalence, intensity, and shedding (see methods). Bottom: Strains differed in epidemiological characteristics including B) maximum likelihood prevalence of infection, C) infection intensity (corrected median Ct), D) maximum likelihood shedding ability (the probability that 1 infected worm could cause visible fluorescence on a shedding plate), and E) relative susceptibility.
August 22, 2025 at 8:29 AM
dnarnaresearch.bsky.social
An efficient beet severe curly top virus-based VIGS vector in Beta vulgaris
doi.org/10.1101/2025...

Genomic characterization of a nematode tolerance locus in sugar beet
doi.org/10.1101/2023...

#Crops #Genomics #SugarBeet
An efficient beet severe curly top virus-based VIGS vector in Beta vulgaris
Sugar beet (Beta vulgaris L.) is one of the most important sugar crops worldwide. However, studies on sugar beet gene functions are still lagging compared to other crops due to the lack of an effectiv...
doi.org
July 13, 2025 at 5:42 AM
nematodehunters.bsky.social
#Worm25 Want to hear more about the Orsay virus variants found through Nematode Hunters? Visit Carolynn at poster 919B!
July 1, 2025 at 3:34 AM
alabamaed1.bsky.social
NEMATODE MONDAY: double trouble on yellow squash. Root knot nematode on roots, but also symptoms of an insect (aphid or whitefly) transmitted virus. Field symptoms make it appear to be virus induced, but RKN also involved. Lab tests will tell the true story #SON #Virus 🧪
Virus disease symptoms on yellow squash Root knot nematode galls on yellow squash
June 9, 2025 at 4:08 AM
phypapers.bsky.social
Characterization of Tobacco ringspot virus and its nematode vector, Xiphinema rivesi, infecting Highbush Blueberry in Washington State https://pubmed.ncbi.nlm.nih.gov/40176493/
April 5, 2025 at 9:11 PM
phypapers.bsky.social
Characterization of Tobacco ringspot virus and its nematode vector, Xiphinema rivesi, infecting Highbush Blueberry in Washington State https://pubmed.ncbi.nlm.nih.gov/40176493/
April 4, 2025 at 12:10 PM
skullhornets.bsky.social
i need to know what nematode or virus occasionally kills my crickets
January 16, 2025 at 4:44 PM
epponews.bsky.social
In 2024, 1000+ new photos have been added to the EPPO Global Database (gd.eppo.int), bringing the total to over 15000! 🌿📸

Images are freely available for educational purposes (with proper citation)

Huge thanks to all photographers supporting #planthealth!
Invasive plant Saururus cernuus invading a waterbody in Belgium Courtesy: Etienne Branquart Symptoms on tomato fruits associated with tomato fruit blotch virus. Courtesy: Salvatore Davino Symptoms caused by the nematode Meloidogyne enterolobii on potato (Solanum tuberosum) Courtesy: Wageningen University (WUR) - 'Field crops' Bark beetle Pseudips mexicanus adult - lateral view Courtesy: Robyn Earl (Department of Agriculture, Food and the Marine, Ireland)
January 10, 2025 at 10:03 AM
ucpath.bsky.social
I challenge anyone to find a cooler #histopathology slide! Intracytoplasmic viral inclusions, in ingested canine cells, in the gut of a #nematode in the bronchiole of a dog!

Oslerus osleri and canine distemper #virus

#pathsky #vetpath #veterinary #parasites #InfectiousDisease
The upper right corner of the image includes some thin-shelled nematode eggs containing larvae. The remainder of the slide shows the gastointestinal tract of a nematode (Oslerus osleri) which is filled with canine cells that the worm has ingested. Some of the leucocytes in the gut of the worm have prominent brightly eosinophilic (pink) intracytoplasmic inclusion bodies that are consistent with canine distemper virus. A lower magnification view of one of the nematodes. The nematode has a thin body wall. The body cavity (pseudocoelom) contains transverse sections of uterus and intestine. The intestine contains numerous nucleated host cells that have been ingested. Most of the uterus is distended by thin-shelled eggs that contain larvae. One section of uterus contains a few less mature, non-larvated eggs. A small airway of a dog that contains a transverse section of a single nematode. A cross section of the nematodes intestine has multiple vacuoles in the epithelial cells. A larger lumenal structure in the body of the nematode has numerous tall epithelial cells containing a single nucleus and a prominent brush border. I am unsure of the identity of the larger structure. Many if not most of the epithelial cells of the dog's airway have beautiful, sharply demarcated, brightly eosinophilic (pink) intracytoplasmic inclusion bodies consistent with canine distemper virus.
December 18, 2024 at 8:49 PM
eliza-coli.bsky.social
COMPETITION

Dengue fever virus has 5 serotypes that compete for hosts. Primary infection with 1 makes further infection with another much more dangerous. So it’s a real killer competition!

#Microsky #PathogenPortraits #SciComm 🐡🧪
Black and white cartoon portrait of Dengue virus on a highly saturated chaotically striped background of red, blue and green. The virus has two bulging frowning bloodshot eyes, it looks like a ball of tensed muscle and it has 5 huge pointy teeth pointing unnaturally inwards (kind of like a parasitic nematode). It's looking directly at you and trust me, you'd really rather it wasn't!
December 17, 2024 at 10:17 AM
xfmgradio.bsky.social
More like coral virus, more like Krabby virus, more like bob virus, more like nematode virus, more like spatuler virus, more like mcnasty meme about SpongeBob corona virus…. the virus
October 24, 2024 at 12:57 AM
ivory1.bsky.social
Here in Southwestern Ontario, we had nematode problem a couple of years ago, but I've never heard of yellow virus. Thankfully. 🙂
July 22, 2024 at 12:44 PM
evbc.bsky.social
Investigating Polintons, virus-like self-synthesizing transposons in eukaryotic genomes, across nematode genomes, reveals ancient and recent integrations, and suggests interphylum horizontal gene transfers among cohabiting hosts. doi.org/10.1093/molb...
January 9, 2024 at 3:05 PM
edyong209.bsky.social
@hylopsar @tomhouslay @HeidiKayDeidi That's right. The thing that is definitely a virus and not a fucking nematode.
November 30, 2024 at 9:36 PM
edyong209.bsky.social
@blakestacey Did I mention that when they actually show the shape of the virus, it's a nematode?
November 30, 2024 at 9:36 PM