Glad to share our latest article “Off-season sex in #Zymoseptoria tritici: little room for late encounters”, which continues our series of studies conducted in #ADEPTeam @inrae-bioger.bsky.social on the epidemiological determinants & impact of sexual reproduction in STB. doi.org/10.1016/j.fg...

Bad news for the French Pine forests! 😩 First outbreak of the #Pinewood #Nematode Bursaphelenchus xylophilus on Maritime #Pine (Pinus pinaster) in the Landes de Gascogne Forest (Southwest France). #PWN #ForestHealth #ForestPathology agriculture.gouv.fr/sante-des-ve...

Combating #wheat leaf #rust: Advances in genetic resistance and sustainable management strategies doi.org/10.1016/j.pm...

Santé des végétaux : un foyer de nématode du pin détecté pour la première fois en France agriculture.gouv.fr/sante-des-ve...

The book "Biological Highways in the Sky" about the aerial dispersion of microbes and small insects is available free of charge in ebook form via the #ÉditionsQuae platform: www.quae-open.com/produit/346/... @dbszane.bsky.social

Reconstructing Puccinia graminis f. sp. tritici genetic diversity in South Africa using herbarium specimens doi.org/10.1094/PDIS...

New Correspondence: "Rethinking the need for field trials" rdcu.be/eM96P

Rapport sur les alternatives existantes à l’usage d'insecticides néonicotinoïdes pour protéger les cultures url.inrae.fr/3L41wRY

🌾A good day for cereal rust community! Thrilled to share our 5 yrs of work with revolutionary discoveries on wheat & barley stripe rust fungi + we present the most comprehensive genomic resource (54 haploid genomes) ever developed for any wheat rust fungi. 1/5 www.biorxiv.org/content/10.1...

BLOG - Battling crop diseases without borders: how a research community maintains global defences against wheat rusts For 15 years, DEWAS, an international research collaboration @cimmyt.bsky.social, has been studying, detecting and defusing outbreaks of the devastating crop disease wheat rust.

PhDone! Congratulations Dr. @ammarabdalrahem.bsky.social! 👏👏👏👨‍🎓🎓 A big thank you to @tatianagiraud.bsky.social, @sofarndhnd.bsky.social & @wheatpath.bsky.social for being on the PhD jury! 📸 @mireiagoga.bsky.social

📣 Three new Master’s 2 (M2) internship opportunities in phytopathology are offered for 2026 within the #ADEPteam @inrae-bioger.bsky.social @inrae-dpt-spe.bsky.social, focusing on the study of plant-pathogen interactions: eng-bioger.versailles-saclay.hub.inrae.fr/teams-and-pl...

Après la journée des scolaires, les collègues @inrae-bioger.bsky.social se mobilisent ce week-end pour faire découvrir les #champignons - bons, brutes & truands ! - sous toutes leurs facettes au grand public pour la #FêteDeLaScience à l’ENS Paris-Saclay @univparissaclay.bsky.social. Venez nombreux !

Collecte de champignons - bons, brutes ou truands !? - à présenter en fin de semaine à l'occasion de la #FêteDeLaScience 🔽

#Rust on brown knapweed (#Centaurea jacea agg.) likely caused by #Puccinia jaceae, found today along the Ru de Gally (Villepreux, France) while collecting diseased plants to prepare for next weekend’s French Science Festival #FêteDeLaScience.

Plasticity in initial infection traits in response to high #temperature for worldwide representative #Puccinia striiformis isolates @inrae-bioger.bsky.social doi.org/10.1016/j.fg...

📣 offre de #stage #Master2 #IngénieurAgro 🧑‍🎓 début 2026 @INRAE_IDF #BIOGER #AgroParisTech en #phytopathologie, #épidémiologie végétale, #écologie : "Etude de la survie de la rouille noire du #blé, entre compartiments naturel et cultivé". Détails ▶️ bioger.versailles-saclay.hub.inrae.fr/equipes-et-p...

#Rust on various-leaved fescue (#Festuca heterophylla), caused by #Uromyces festucae or #Puccinia festucae (?) 🤔(Les Clayes-sous-Bois, FR).

#Rust on bramble (#Rubus fruticosus) caused by #Kuehneola uredinis, here with white telia/teliospores hyperparasitized by #Tuberculina persicina (Les Clayes-sous-Bois, FR).

Inflorescences of #Lolium perenne heavily infected with ergots of #Claviceps purpurea, themselves colonized (hyperparasitized?) by #Fusarium heterosporum (syn. F. lolii), which form orange sporodochia at the base of the sclerotia (Villepreux, FR) — see Gay & Shattock (1980).

#Mildew of broadleaf plantain (#Pantago major) caused by #Golovinomyces sordidus syn. #Erysiphe sordida (Villepreux, FR).

#Rust of hedge bindweed (#Calystegia sepium) caused by #Puccinia convolvuli, here with uredinia & telia, found, along the Ru de Gally (Villepreux, FR).

#Rust on reed canary grass (#Phalaris arundinacea) likely caused by #Puccinia sessilis, hyperparasitized by Sphaerellopsis sp., along the Ru de Gally (Villepreux, FR).

#Rust on leaves of tall fescue (Schedonorus arundinaceus syn. Lolium arundinaceum) caused by #Puccinia graminis, heavily hyperparasitized by Sphaerellopsis sp., along the Ru de Gally (Villepreux, FR).

#Rust of lady's thumb (#Persicaria maculosa) caused by #Puccinia polygoni-amphibii — here hyperparasitized by Sphaerellopsis sp. — found along the Ru de Gally (Villepreux, FR).

Track to Combat Wheat Stem Rust (Puccinia graminis f. sp. tritici) Races: Pathogenicity Spectrum, Tempo-Spatial Dynamics, and Impacts on Irrigated Wheat in Ethiopia under Climate Change https://www.biorxiv.org/content/10.1101/2025.09.14.676115v1

L’unité @inrae-bioger.bsky.social vous invite à la Fête de la Science au Village des Sciences à l’ENS Paris-Saclay @univparissaclay.bsky.social du 3 au 5 octobre 2025. Thème de l'atelier : "Les #champignons, le bon, la brute et le truand !" bioger.versailles-saclay.hub.inrae.fr/actualites/b...

Today, September 16, the U.S. House of Representative 🇺🇸 held a hearing on #agroterrorism: “Surveying the Threat of Agroterrorism: Perspectives on Food, Agriculture, and Veterinary Defense.” Watch ▶️ homeland.house.gov/hearing/surv...

Plant-plant interactions in #wheat mixtures modulate mean and variance of susceptibility to #Septoria tritici blotch @lauramathieu.bsky.social doi.org/10.1093/jxb/...

#Rust on maize (#Zea mays) caused by #Puccinia sorghi with abundant urediniospores (28-32 × 20-26 µm) and a few rare teliospores — here hyperparasitized by Sphaerellopsis sp. ; sampling by Laura Nunes 🙏 from @ideevl.bsky.social field experiments (Gif-sur-Yvette, FR).

This year, yellow rust overcame a major resistance gene in wheat (Yr15), leaving most UK wheat varieties vulnerable for the first time @niab-uk.bsky.social 1/2

Evaluating a landscape-scale model to forecast #wheat stem #rust doi.org/10.12688/ver...

Spatial and temporal variability in #wheat yellow #rust prevalence across the Pak‐Afghan bordering Hindukush region of #Pakistan: A four‐year surveillance study (2019–2022) doi.org/10.1111/jph....

Hybrid lineage of #Puccinia striiformis overlapping on #wheat, barley and wild barley hosts in #Uzbekistan, Central Asia doi.org/10.1094/PDIS...

#JobAlert: @oregonstate.edu's Department of Botany & Plant Pathology is recruiting a tenure-track Assistant Professor in population and disease dynamics of cereal pathogens jobs.oregonstate.edu/postings/171...

❓ How effective may Integrated Pest Management controls be against Septoria (a damaging disease on UK winter wheat)? 📄 Our modelling study is now published in PLOS Computational Biology @plos.org 🔗: doi.org/10.1371/jour... 👇 For more on the study see a thread associated with an earlier preprint.

Our @newphyt.bsky.social commentary spotlights the recent notable work by @aceraceae.bsky.social et al. on local adaptation of both wild plant and pathogen—prompting reflection for managing cultivated plant pathosystems under climate change ▶️ doi.org/10.1111/nph....

A bit of #geology, for a change: beautiful sample of garnet-bearing granulite (#charnockite) and #kaersutite crystal (titanium-rich amphibole), found near Moudeyres, FR.

Powdery #mildew on imperforate St John's-wort (#Hypericum maculatum) caused by #Erysiphe hyperici (near Moudeyres, FR).

#Rust of sweet spurge (#Euphorbia dulcis) caused by #Melampsora euphorbiae-dulcis (near Moudeyres, FR).

#Rust of greater stitchwort (#Stellaria holostea) caused by #Puccinia arenariae (near Moudeyres, FR).

#Rust on soft rush (#Juncus effusus) caused by #Uromyces junci or U. silphii (Moudeyres, FR).

#Rust on jointleaf rush (#Juncus articulatus) caused by #Uromyces junci or U. silphii (difficult to distinguish in the absence of teliospores), here hyperparasitized by Sphaerellopsis sp. (Lac bleu, near Moudeyres, FR).

#Rust of bladder campion (#Silene vulgaris) likely caused by #Uromyces behenis (Moudeyres, FR).

#Rust on little green sedge (#Carex viridula syn. C. oederi, also identified as C. flava agg.) likely caused by #Puccinia schroeteriana, with urediniospores 18–22 × 16–20 µm, here hyperparasitized by Sphaerellopsis sp. (Lac bleu, near Moudeyres, FR).

#Smut of beaked sedge (#Carex rostrata) caused by #Anthracoidea sublinclusa, in which the contents of utricules are transformed into a black mass of agglutinated spores ornamented with stout, apically flattened spines up to 2 µm long (Moudeyres, FR).

Local cluster of stem #rust on grasses caused by #Puccinia graminis, not observed elsewhere, but here explained by the presence of a #Berberis thunbergii hedge, with old aecia as evidence: new example of interaction between wild and anthropized compartments (near Moudeyres, FR).

Powdery #mildew of fireweed (#Epilobium angustifolium) caused by #Podosphaera epilobii (Moudeyres, FR).

#Rust on plume thistle (#Cirsium rivulare) caused by #Puccinia laschii (Moudeyres, FR).

#Rust on marsh thistle (#Cirsium palustre) caused by #Puccinia laschii (Moudeyres, FR).