We have rust (Puccinia oxalidis) on our Oxalis which we’ve just taken in for the winter
November 1, 2026 at 9:18 AM
We have rust (Puccinia oxalidis) on our Oxalis which we’ve just taken in for the winter
Inheritance, virulence variation, and genetic heterozygosity of sexual recombination between races of #Puccinia striiformis f. sp. tritic -Maxinzhi Liu et al.
🔗https://doi.org/10.1016/j.jia.2025.12.005
#PlantPathology #PlantDisease
🔗https://doi.org/10.1016/j.jia.2025.12.005
#PlantPathology #PlantDisease
November 3, 2026 at 9:36 AM
Inheritance, virulence variation, and genetic heterozygosity of sexual recombination between races of #Puccinia striiformis f. sp. tritic -Maxinzhi Liu et al.
🔗https://doi.org/10.1016/j.jia.2025.12.005
#PlantPathology #PlantDisease
🔗https://doi.org/10.1016/j.jia.2025.12.005
#PlantPathology #PlantDisease
Puccinia monoica, the Mustard Flower Rust, parasitizing a Boechera at Betasso Preserve. The rust tricks insects visiting these pseudoflowers into transferring spermatia from one host to another in the same way that pollinators transter pollen between flowers
#FallBackFlowers #FallBack to April 27 🌿
#FallBackFlowers #FallBack to April 27 🌿
October 27, 2026 at 3:04 PM
Puccinia monoica, the Mustard Flower Rust, parasitizing a Boechera at Betasso Preserve. The rust tricks insects visiting these pseudoflowers into transferring spermatia from one host to another in the same way that pollinators transter pollen between flowers
#FallBackFlowers #FallBack to April 27 🌿
#FallBackFlowers #FallBack to April 27 🌿
🌽 Researchers used #CRISPR #GenomeEditing to knock out a gene in corn, increasing its resistance to southern corn rust, a serious fungal disease. The finding could support the development of disease-resistant corn.
https://ow.ly/2x4Z50ZYOjy
https://ow.ly/2x4Z50ZYOjy
CRISPR Boosts Maize Resistance to Southern Corn Rust
Researchers from Jilin Academy of Agricultural Sciences and partners have investigated the role of ZmJAZ12 in maize resistance to southern corn rust (SCR). Caused by the fungus Puccinia polysora, SCR is a major disease that can reduce maize yields worldwide. The study reveals significant insights into how ZmJAZ12 influences the plant's defense responses and its potential for use in maize breeding.
ow.ly
October 20, 2026 at 6:50 AM
🌽 Researchers used #CRISPR #GenomeEditing to knock out a gene in corn, increasing its resistance to southern corn rust, a serious fungal disease. The finding could support the development of disease-resistant corn.
https://ow.ly/2x4Z50ZYOjy
https://ow.ly/2x4Z50ZYOjy
Puccinia magnusiana I suspect, on Common Reed at Broughton Sanctuary, Skipton. No yellow running up the leaf blade; teleospores ~19x53μm and apically rounded and pedicels ~30μm; a few yellow uredinia - urediniospores ~22x30μm. Microscopy in thread.
#fungusfriends @bitheolaidhe.bsky.social
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#fungusfriends @bitheolaidhe.bsky.social
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October 16, 2026 at 9:11 AM
Puccinia magnusiana I suspect, on Common Reed at Broughton Sanctuary, Skipton. No yellow running up the leaf blade; teleospores ~19x53μm and apically rounded and pedicels ~30μm; a few yellow uredinia - urediniospores ~22x30μm. Microscopy in thread.
#fungusfriends @bitheolaidhe.bsky.social
1/3
#fungusfriends @bitheolaidhe.bsky.social
1/3
Global rise of a #wheat pathogen [#Puccinia striiformis f. sp. tritici] through two-stage evolutionary emergence coupled with aerial dispersal doi.org/10.1038/s414...
October 15, 2026 at 7:24 PM
Global rise of a #wheat pathogen [#Puccinia striiformis f. sp. tritici] through two-stage evolutionary emergence coupled with aerial dispersal doi.org/10.1038/s414...
Stripe rust is a devastating pathogen of graminaceous #crops. Here, Wang et al. identify the S-like RNase TaRNS4 that positively regulates #wheat resistance to stripe rust by degrading the #RNA of Puccinia striiformis.
#OpenAccess
doi.org/10.1111/jipb...
@wileylifesci.bsky.social
#PlantSci
#OpenAccess
doi.org/10.1111/jipb...
@wileylifesci.bsky.social
#PlantSci
The TaRNS4–TaPP2C10 module regulates wheat resistance to stripe rust through RNA degradation and MAPK cascades
In wheat, phosphorylation of the S-like RNase TaRNS4 mediated by the kinase TaRLK5 promotes its degradation of Puccinia striiformis f. sp. tritici RNA in the apoplast, enhancing resistance to stripe ...
doi.org
October 10, 2026 at 6:07 PM
Stripe rust is a devastating pathogen of graminaceous #crops. Here, Wang et al. identify the S-like RNase TaRNS4 that positively regulates #wheat resistance to stripe rust by degrading the #RNA of Puccinia striiformis.
#OpenAccess
doi.org/10.1111/jipb...
@wileylifesci.bsky.social
#PlantSci
#OpenAccess
doi.org/10.1111/jipb...
@wileylifesci.bsky.social
#PlantSci
The authors included RRIDs in their in Communications Biology paper! We value the author's support of reproducibility. #BetterScience #reproducibility #STMpublishing
Virulence gains in the Puccinia striiformis f. sp. tritici PstS10 lineage correlate with expression polymorphism in a candidate Avr effector - Communications Biology
Transcriptomic analyses identified loss of expression of a single candidate Avr effector gene, PST130_P495001, associated with a recent gain of virulence in European wheat yellow rust pathogen isolates.
doi.org
October 10, 2026 at 7:01 AM
The authors included RRIDs in their in Communications Biology paper! We value the author's support of reproducibility. #BetterScience #reproducibility #STMpublishing
#Puccinia coronata f. sp. avenae (Pca) is a threat to oat production in Australia. Through virulence and genomic analysis of Pca isolates collected across Australian oat-producing regions, Zhouyang Su et al. identified new races and a new lineage: https://doi.org/10.1094/PDIS-11-25-2239-SC
October 2, 2026 at 10:06 PM
#Puccinia coronata f. sp. avenae (Pca) is a threat to oat production in Australia. Through virulence and genomic analysis of Pca isolates collected across Australian oat-producing regions, Zhouyang Su et al. identified new races and a new lineage: https://doi.org/10.1094/PDIS-11-25-2239-SC
On the other hand though there is a fine crop of Mallow Rust, Puccinia malvacearum, on seed heads and leaves! 😉
#Rustfungus #WildPlantDisease #Fungi
#WildWebsWednesday
#Rustfungus #WildPlantDisease #Fungi
#WildWebsWednesday
September 30, 2026 at 6:33 AM
On the other hand though there is a fine crop of Mallow Rust, Puccinia malvacearum, on seed heads and leaves! 😉
#Rustfungus #WildPlantDisease #Fungi
#WildWebsWednesday
#Rustfungus #WildPlantDisease #Fungi
#WildWebsWednesday
Virulence and genotypic diversity of the #wheat stem #rust pathogen (#Puccinia graminis f. sp. tritici) in #Jordan and the response of durum wheat genotypes to infection doi.org/10.1094/PDIS...
September 29, 2026 at 8:25 AM
Virulence and genotypic diversity of the #wheat stem #rust pathogen (#Puccinia graminis f. sp. tritici) in #Jordan and the response of durum wheat genotypes to infection doi.org/10.1094/PDIS...
Interactions Review: "Leaf Rust in Rye: From Pathogen Biology to Host Defense and Resistance Breeding," by Monika Rakoczy-Trojanowska et al.: https://doi.org/10.1094/MPMI-02-26-0014-IRW
September 29, 2026 at 5:00 PM
Interactions Review: "Leaf Rust in Rye: From Pathogen Biology to Host Defense and Resistance Breeding," by Monika Rakoczy-Trojanowska et al.: https://doi.org/10.1094/MPMI-02-26-0014-IRW
Shazam ei tunnista puccinia. Testasin. #missionimpossible osa ties kuinka mones.
September 28, 2026 at 7:55 PM
Shazam ei tunnista puccinia. Testasin. #missionimpossible osa ties kuinka mones.
#DNA markers for newly discovered genetic loci Phr3 and Phr4, conferring #resistance to white rust in #Chrysanthemum morifolium
To read this new article in JHSB visit: doi.org/10.1080/1462...
#Puccinia #GWAS #SNP
To read this new article in JHSB visit: doi.org/10.1080/1462...
#Puccinia #GWAS #SNP
DNA markers for newly discovered genetic loci Phr3 and Phr4, conferring resistance to white rust in Chrysanthemum morifolium
Chrysanthemum white rust, caused by Puccinia horiana, poses a serious threat to chrysanthemum (Chrysanthemum morifolium) production. The development of resistant cultivars is of great interest to b...
doi.org
September 29, 2026 at 11:47 AM
#DNA markers for newly discovered genetic loci Phr3 and Phr4, conferring #resistance to white rust in #Chrysanthemum morifolium
To read this new article in JHSB visit: doi.org/10.1080/1462...
#Puccinia #GWAS #SNP
To read this new article in JHSB visit: doi.org/10.1080/1462...
#Puccinia #GWAS #SNP
drhoz.tumblr.com/post/8289038... #4067 - Puccinia coprosmae - Coprosma Rust
‘Rust fungus of Coprosma’. The genus is named after Tommaso Puccini (1664–1735), an Italian physician, anatomist, and professor of medicine and botany at Florence.
‘Rust fungus of Coprosma’. The genus is named after Tommaso Puccini (1664–1735), an Italian physician, anatomist, and professor of medicine and botany at Florence.
#4067 - Puccinia coprosmae - Coprosma Rust
'Rust fungus of Coprosma'. The genus is named after Tommaso Puccini (1664–1735), an Italian physician, anatomist, and professor of medicine and botany at Florence.
Puccinia is a large genus with over....
drhoz.tumblr.com
September 28, 2026 at 11:27 AM
drhoz.tumblr.com/post/8289038... #4067 - Puccinia coprosmae - Coprosma Rust
‘Rust fungus of Coprosma’. The genus is named after Tommaso Puccini (1664–1735), an Italian physician, anatomist, and professor of medicine and botany at Florence.
‘Rust fungus of Coprosma’. The genus is named after Tommaso Puccini (1664–1735), an Italian physician, anatomist, and professor of medicine and botany at Florence.
Long-term collection of #Puccinia striiformis f. sp. tritici isolates in Canada provides a unique perspective on pathogen evolution. Bohan Wei et al. extend previous race structure analyses by characterizing 73 isolates from wheat, barley, and wild barley: https://doi.org/10.1094/PHYTO-02-26-0058-R
September 27, 2026 at 11:04 PM
Long-term collection of #Puccinia striiformis f. sp. tritici isolates in Canada provides a unique perspective on pathogen evolution. Bohan Wei et al. extend previous race structure analyses by characterizing 73 isolates from wheat, barley, and wild barley: https://doi.org/10.1094/PHYTO-02-26-0058-R
Puccinia is a large genus with over 4000 species, and often highly specific in which plant species it will infect. This particular one was first described in 1890 by English mycologist and botanist Mordecai Cubitt Cooke (1825 – 1914) based on specimens found on Coprosma lucida.
September 28, 2026 at 11:27 AM
Puccinia is a large genus with over 4000 species, and often highly specific in which plant species it will infect. This particular one was first described in 1890 by English mycologist and botanist Mordecai Cubitt Cooke (1825 – 1914) based on specimens found on Coprosma lucida.
Puccinia tanaceti
Rust fungus on leaves of Tansy, Tanacetum vulgare.
At the allotment.
#Fungi #FungiFriends
Rust fungus on leaves of Tansy, Tanacetum vulgare.
At the allotment.
#Fungi #FungiFriends
September 25, 2026 at 2:01 PM
Puccinia tanaceti
Rust fungus on leaves of Tansy, Tanacetum vulgare.
At the allotment.
#Fungi #FungiFriends
Rust fungus on leaves of Tansy, Tanacetum vulgare.
At the allotment.
#Fungi #FungiFriends
A lot of the Dactylis glomerata in our field is covered in this rust Puccinia striiformoides right now, which forms bright orange uredinia in narrow stripes. I also found a few plants with a coinfection of Puccinia graminis (I think), with larger warm brown uredinia.
#FungiFriends #WildPlantDisease
#FungiFriends #WildPlantDisease
September 25, 2026 at 8:48 PM
A lot of the Dactylis glomerata in our field is covered in this rust Puccinia striiformoides right now, which forms bright orange uredinia in narrow stripes. I also found a few plants with a coinfection of Puccinia graminis (I think), with larger warm brown uredinia.
#FungiFriends #WildPlantDisease
#FungiFriends #WildPlantDisease
🌱 From Physiologia Plantarum: Wheat’s WTK1 resistance gene triggers waves of immune responses that confine stripe rust to localized lesions and limit fungal growth. (Gitta Coaker)
▶️ pmc.ncbi.nlm.nih.gov/articles/PMC...
#PlantScience #PlantPathology
▶️ pmc.ncbi.nlm.nih.gov/articles/PMC...
#PlantScience #PlantPathology
September 21, 2026 at 6:05 PM
🌱 From Physiologia Plantarum: Wheat’s WTK1 resistance gene triggers waves of immune responses that confine stripe rust to localized lesions and limit fungal growth. (Gitta Coaker)
▶️ pmc.ncbi.nlm.nih.gov/articles/PMC...
#PlantScience #PlantPathology
▶️ pmc.ncbi.nlm.nih.gov/articles/PMC...
#PlantScience #PlantPathology
Lewis, C. M., Leverington-Waite, M., Collier, S., Orford, S., Chayut, N., Griffiths, S., & Saunders, D. G. O. (2026). Watkins landraces contain novel sources of Puccinia striiformis f. sp. tritici (Pst) resistance effective against Yr15-breaking Pst isolates. Zenodo. doi.org/10.5281/zeno...
September 10, 2026 at 10:15 AM
Lewis, C. M., Leverington-Waite, M., Collier, S., Orford, S., Chayut, N., Griffiths, S., & Saunders, D. G. O. (2026). Watkins landraces contain novel sources of Puccinia striiformis f. sp. tritici (Pst) resistance effective against Yr15-breaking Pst isolates. Zenodo. doi.org/10.5281/zeno...
Comparative genomics reveals lineage‐associated structural variation and diversification in a barley fungal pathogen
Yu et al.
nph.onlinelibrary.wiley.com/doi/10.1111/...
Yu et al.
nph.onlinelibrary.wiley.com/doi/10.1111/...
September 7, 2026 at 5:09 PM
Comparative genomics reveals lineage‐associated structural variation and diversification in a barley fungal pathogen
Yu et al.
nph.onlinelibrary.wiley.com/doi/10.1111/...
Yu et al.
nph.onlinelibrary.wiley.com/doi/10.1111/...
The last studies of wheat stem rust in Jordan date to the late 1980s. Kholoud M. Alananbeh et al. conducted a national survey to assess the virulence and genetic diversity of #Puccinia graminis f. sp. tritici and durum wheat responses to infection: https://doi.org/10.1094/PDIS-10-25-2026-RE
September 4, 2026 at 9:14 PM
The last studies of wheat stem rust in Jordan date to the late 1980s. Kholoud M. Alananbeh et al. conducted a national survey to assess the virulence and genetic diversity of #Puccinia graminis f. sp. tritici and durum wheat responses to infection: https://doi.org/10.1094/PDIS-10-25-2026-RE
Yellow (stripe) rust, caused by #Puccinia striiformis f. sp. tritici (Pst), is a serious threat to wheat crops grown in northern India. Om Prakash Gangwar et al. identified three predominant Pst pathotypes across the North Indian states: https://doi.org/10.1094/PDIS-07-25-1474-RE
September 2, 2026 at 6:23 PM
Yellow (stripe) rust, caused by #Puccinia striiformis f. sp. tritici (Pst), is a serious threat to wheat crops grown in northern India. Om Prakash Gangwar et al. identified three predominant Pst pathotypes across the North Indian states: https://doi.org/10.1094/PDIS-07-25-1474-RE
Hina Firdous et al. analyzed wheat stripe rust populations across China and identified patterns of regional connectivity, differentiation, and virulence that could inform disease management strategies. https://doi.org/10.1094/PHYTO-12-25-0391-R
September 1, 2026 at 11:05 PM
Hina Firdous et al. analyzed wheat stripe rust populations across China and identified patterns of regional connectivity, differentiation, and virulence that could inform disease management strategies. https://doi.org/10.1094/PHYTO-12-25-0391-R