#ForestPathology
LightNews LightNews
pascal-frey.bsky.social
The last PhD defense of the year!
Congratulations Dr. Elodie Muller on your thesis on the #ecological #dynamics of an invasive #pathogen, Cryptostroma corticale, causing #SootyBarkDisease of #Maple trees!
👏👏👏👨‍🎓🎓🌳🍄📊📈

#ForestHealth
#ForestPathology
December 19, 2025 at 2:23 PM
umr-iam.bsky.social
#OurFridaySeminar: Elodie Muller shows that prevalence of #Cryptostroma corticale (causing #SootyBarkDisease of #Maple trees) in asymptomatic sycamore maples is larger than expected in France
#TreeHealth #ForestPathology #UrbanTrees
March 28, 2025 at 10:26 PM
pascal-frey.bsky.social
#WhitePineBlisterRust (Cronartium ribicola) on limber pine (Pinus flexilis) in the Amance Arboretum

#ForestHealth
#TreeHealth
#ForestPathology
March 13, 2026 at 10:31 PM
eterhone.bsky.social
Spring has arrived in our lab! We’ve woken up the birch seedlings for our ”MÄTÄS” project, testing new alternatives to chemical plant protection against Phytophthora! #forestpathology #nurseryproduction #healthyseedlings #mixedforest @luke.fi
March 5, 2025 at 8:16 AM
umr-iam.bsky.social
#OurFridaySeminar: @mireiagoga.bsky.social talks about Understanding the link between host #resistance to #drought and its susceptibility to #Diplodia sapinea
(a rehearsal before the @iufro.bsky.social conference on #TreeHealth at @wslresearch.bsky.social next week)
#ForestHealth #ForestPathology
May 16, 2025 at 12:09 PM
umr-iam.bsky.social
#OurFridaySeminar: Méline Poch (PhD Student with @mireiagoga.bsky.social) is exploring the inoculum dynamics of the fungal pathogen #Diplodia sapinea in #pine stands

#ForestPathology #ForestHealth #TreeHealth
September 12, 2025 at 12:33 PM
pascal-frey.bsky.social
Forest Pathology field trip in the Amance Arboretum with Master students
#DothistromaNeedleBlight
#DiplodiaShootBlight
#ForestHealth
#TreeHealth
#ForestPathology
March 13, 2026 at 10:23 PM
pascal-frey.bsky.social
Reportage de @sudouest.fr sur les travaux de #MélineSaubin #UMR_Biogeco sur l'épidémiologie évolutive du #nématode 🪱 du #pin 🌲

#PineWoodNematode
#PineWiltNematode
#ForestHealth
#ForestPathology
sudouest.fr Sud Ouest @sudouest.fr · Dec 7
Nématode du pin : sur les traces génétiques de la petite bête
Nématode du pin : sur les traces génétiques de la petite bête
l.sudouest.fr
December 16, 2025 at 11:20 PM
samanfb.bsky.social
🌿Hi, Bluesky community! I’m Saman Firouzianbandpey, a passionate researcher exploring the fascinating world of Phytobacteriology and Forest Pathology. 🌱
I hold a Ph.D. in Plant Bacteriology, with research focused on bacterial taxonomy.
#PlantScience #ForestPathology #Bacteriology #ScienceCommunity
December 4, 2024 at 10:41 AM
phessenauer.bsky.social
Out in the field sampling white pine blister rust with my students🌲
#forestpathology #fieldwork
June 7, 2025 at 5:28 PM
pascal-frey.bsky.social
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...
A male pinewood nematode (Bursaphelenchus xylophilus) under the microscope (©EPPO).
November 4, 2025 at 9:20 PM
eterhone.bsky.social
Fungi of the day! Gremmeniella abietina! Woken up from minus 80 degrees (from quite old collection). Luckily we have excellent strain collevtion, as it seems to be difficult to find in the forest nowadays. #forestpathology #mätäs #metsäpatologia #versosurma @luke.fi
March 31, 2025 at 2:45 PM
pascal-frey.bsky.social
Le nématode du pin, un redoutable globe-trotteur 👇

#PineWoodNematode
#PineWiltDisease
#ForestHealth
#ForestPathology
#TreeHealth

theconversation.com/le-nematode-...
Le nématode du pin, un redoutable globe-trotteur
Partout où il s'est installé, le nématode du pin a tué des millions d'arbres. Son arrivée dans les Landes françaises ne présage donc rien de bon.
theconversation.com
March 19, 2026 at 2:54 PM
pascal-frey.bsky.social
Introduction of the #PineWoodNematode in France: what can research do?
#ForestHealth
#TreeHealth
#ForestPathology

www.plantedforests.org/introduction...
Introduction of the pine wood nematode in France: what can research do? - European Institute of Planted Forest - IEFC
www.plantedforests.org
March 6, 2026 at 2:19 PM
pascal-frey.bsky.social
Reportage de @sudouest.fr au coeur de la plateforme EmerGreen #INRAE dédiée à l'étude du #nématode 🪱 du #pin 🌲, avec #MélineSaubin et #MarcKleinhentz #UMR_Biogeco

#PineWoodNematode
#PineWiltNematode
#ForestHealth
#ForestPathology
sudouest.fr Sud Ouest @sudouest.fr · Dec 6
En Gironde, au cœur du bunker sécurisé où les chercheurs étudient le nématode du pin
🔗https://l.sudouest.fr/4VPH
December 16, 2025 at 11:08 PM
pascal-frey.bsky.social
Happy to share our new paper is out in @plantdiseasej.bsky.social:
Development of a new tool to detect Melampsora medusae f. sp. tremuloidae causing rust disease on Populus tremuloides.

#ForestHealth
#TreeHealth
#ForestPathology
#RustFungi

doi.org/10.1094/PDIS...
A leaf of Populus tremuloides infected by Melampsora medusae f. sp. tremuloidae. Photo credit: Philippe Tanguay, Canadian Forest Service.
July 23, 2025 at 9:59 PM
pascal-frey.bsky.social
A step forward in restoring the American #chestnut #tree, Castanea dentata, which was almost wiped out by chestnut #blight, caused by the #invasive #fungus Cryphonectria parasitica, and Phytophthora root rot.

#GenomicSelection #ForestHealth #TreeHealth #ForestPathology

doi.org/10.1126/scie...
Genomic approaches to accelerate American chestnut restoration
More than a century after two introduced pathogens killed billions of American chestnut trees, introgression of resistance alleles from Chinese chestnuts has contributed to the recovery of self-sustai...
doi.org
February 12, 2026 at 9:11 PM
phessenauer.bsky.social
Presenting about the importance of soil variables in local adaption in Dutch elm disease pathogens at #AQSSSSPPQ2025

#forestpathology #localadaptation #molecularevolution
June 11, 2025 at 2:16 AM
pascal-frey.bsky.social
How it started ⏩ How it ended

A weeping polypore (Pseudoinonotus dryadeus) has totally destroyed the base of a 1-m-diameter red oak (Quercus rubra) in the Amance Arboretum.

#ForestHealth
#TreeHealth
#ForestPathology
March 13, 2026 at 10:52 PM
pascal-frey.bsky.social
Heureux d'avoir pu contribuer à un article d'UNYS-Sciences sur l'émergence de maladies forestières

#ForestHealth #ForestPathology #TreeHealth

www.unys-sciences.fr/forets-malad...
Forêts malades : comment faire face aux menaces croissantes en France ? - Unys
Avec Pascal Frey, on s’intéresse à l’épidémiologie des maladies qui s’attaquent aux arbres, à l’apparition de nouveaux variants et à la génétique des populations de champignons pathogènes forestiers.
www.unys-sciences.fr
June 4, 2026 at 10:39 AM
pascal-frey.bsky.social
Pourquoi les grands ormes adultes ont-ils disparu en France ?
Quelques éléments de réponse de Jean Pinon dans @lefigaro.fr

#Graphiose
#DutchElmDisease
#ForestPathology
#TreeHealth
#UrbanTrees

www.lefigaro.fr/jardin/pourq...
Pourquoi les grands ormes adultes ont-ils disparu en France ?
Sur notre territoire, il ne reste plus que quelques beaux spécimens de cet arbre, pourtant caractéristique de nos campagnes. Autrefois, les ormes étaient pourtant nombreux. Que s’est-il passé ?
www.lefigaro.fr
April 4, 2025 at 9:29 PM
pascal-frey.bsky.social
Today, an article in @lemonde.fr, to which we contributed, revisits this @science.org article on genomic selection of chestnut trees for disease resistance.

#GenomicSelection
#ForestHealth
#TreeHealth
#ForestPathology

www.lemonde.fr/sciences/art...
February 25, 2026 at 4:27 PM
pascal-frey.bsky.social
Pourquoi les 🌳🌲 meurent-ils autant du manque d’💧 que des 🦠🍄🪱 ?

La réponse par @mireiagoga.bsky.social (@umr-iam.bsky.social) dans @lefigaro.fr 👇

#ForestHealth
#ForestPathology

www.lefigaro.fr/sciences/pou...
Pourquoi les arbres meurent autant du manque d’eau que des parasites
FIGARO DEMAIN - À Champenoux (Meurthe-et-Moselle), les expérimentations sous serre ou à ciel ouvert de l’Inrae viennent nuancer certains postulats concernant l’adaptation de nos forêts à la hausse des...
www.lefigaro.fr
November 28, 2025 at 1:08 PM
foresthazel.com
This is one of the #ForestHealth topics that pushed me toward a career in #ForestPathology. Always a immense pleasure to see progress in restoring this keystone species to Eastern US deciduous forests
February 13, 2026 at 8:44 PM
pascal-frey.bsky.social
Mon interview par Elise De Grave pour La Semaine, à propos des menaces qui pèsent sur les forêts lorraines (et européennes en général).

#ForestHealth #TreeHealth #ForestPathology

www.lasemaine.fr/sante-enviro...
Comment sauver les forêts lorraines ? Entretien avec le Dr Pascal Frey, directeur de recherche à l'Inrae - La Semaine
DOSSIER. À Champenoux, près de Nancy, le Dr Pascal Frey dirige l’une des deux seules équipes françaises spécialisées dans les maladies forestières. Directeur de recherche à l’Inrae, pathologiste fores...
www.lasemaine.fr
June 10, 2026 at 4:07 PM