#Cronartium
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canjforestres.bsky.social
Just Published 📰Efficacy of preventative pruning juvenile Pinus monticola to reduce mortality caused by Cronartium ribicola in south coastal British Columbia 🍁

✒️Zeglen
🔗https://ow.ly/QlQM50ZOPx9

📷Fig 5: Effects of pruning on survival

#Forestry #ForestManagement #Silviculture
Line graph comparing frequency of years to death between pruned and unpruned groups, showing higher peaks for unpruned at year 5.
September 23, 2026 at 12:00 PM
pascal-frey.bsky.social
It should be called Cronartium pini, as Cronartium flaccidum and Peridermium pini were shown to be two forms of the same species : doi.org/10.1016/j.fu...
September 1, 2026 at 4:07 PM
ruhrpottpilze.bsky.social
Cronartium flaccidum ex Vincetoxicum japonicum

Botanischer Garten Bochum, NRW, Germany, 27.8.2026

#Cronartium #Cronartiumflaccidum #Vincetoxicum #Vincetoxicumjaponicum #Rostpilz #Rustfungus #Phytopathology #Nature #Fungifriday #FungiFriends
September 1, 2026 at 8:32 AM
ruhrpottpilze.bsky.social
Cronartium ribicola ex Ribes uva-crispa

Botanischer Garten Bochum, NRW, Germany, 27.8.2026

#Cronartium #Cronartiumribicola #Ribes #Ribesuvacrispa #Rostpilz #Rustfungus #Phytopathology #FungiFriday #fungifriends #Nature #Mycology
August 28, 2026 at 10:12 AM
drhoz.bsky.social
And barely cultivated at all in the US, since a farming ban in the early 1900s. That’s because White pine blister rust (Cronartium ribicola) is a fungus that cycles between currants and white pines (Pinus) as a host, and was considered a serious threat to US logging.

fungus photos from wiki
May 27, 2026 at 1:02 AM
carolinabohemian.bsky.social
Finally it’s #fungifriday! Fusiform rust (Cronartium quercuum) that I found on my walk. We finally got rain, so hoping for more #fungifriends tomorrow.
May 8, 2026 at 3:30 PM
biorxiv-genetic.bsky.social
The impact of Cronartium ribicola inoculum density on quantitative disease resistance in whitebark pine. https://www.biorxiv.org/content/10.64898/2026.05.02.722345v1
May 6, 2026 at 10:32 PM
biorxivpreprint.bsky.social
The impact of Cronartium ribicola inoculum density on quantitative disease resistance in whitebark pine. https://www.biorxiv.org/content/10.64898/2026.05.02.722345v1
May 6, 2026 at 10:32 PM
norwichbirder.bsky.social
An update: as the spores were not right for Cronartium, this was submitted to the Norfolk Fungus Study Group DNA team. It gave a good sequence… of Hypomyces chrysospermus, an ascomycete that parasitises boletes. How it got on the acorn cup (no boletes visible nearby) remains a mystery.
norwichbirder.bsky.social James Emerson @norwichbirder.bsky.social · Dec 1
This has me confused. At the weekend I found an acorn cup that appeared to be covered in a rust fungus. I remembered that there is a scarce rust that does this, Cronatium quercuum, so was quite pleased. However, whilst the orange is indeed spores, they are not the right shape for Cronartium...
An acorn cup covered in a yellowy-orange powder. A microscope image showing some near-spherical yellowy-orange spores.
March 28, 2026 at 1:00 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
efsa-plants.bsky.social
🌿The life cycle of fungi can be very complex

Take non-EU Cronartium spp.: these fungi complete their cycle either on Pinus spp. or on Pinus spp. and dicotyledonous plants.

Learn more about key aspects for EU surveillance:

🔗 link.europa.eu/pP4yJB

#PlantHealth #PestSurveyCard #SurveillanceNetwork
Swollen, infected cone of Pinus spp. by Cronartium strobilinum (Source: USDA Forest Service, USDA Forest Service, Bugwood.org) (A) Telia of Cronartium coleosporoides on Castilleja sp. leaf; (B) telia of C. comandrae on Comandra sp. leaf; (C) telia of C. occidentale on Ribes sp. leaf; (D) telia of C. quercuum on Quercus sp. leaf (E) close-up view of telia of C. quercuum on Quercus sp. leaf. (Sources: USDA Forest Service – Northern and Intermountain Region, USDA Forest Service, Bugwood.org (A); USDA Forest Service – Forest Health Protection Intermountain Region – Ogden, UT, USDA Forest Service, Bugwood.org (B, C); EPPO Global Database, courtesy of Ministère des Forêts, de la Faune et des Parcs, Quebec, Canada (D, E))
February 9, 2026 at 2:06 PM
funghimicologia.bsky.social
Genome Sequence and Population Genomic Analysis of Cronartium quercuum f.sp. fusiforme

onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
January 15, 2026 at 10:44 PM
fuck.ispost.ing
fuck Cronartium
December 5, 2025 at 11:30 PM
norwichbirder.bsky.social
This has me confused. At the weekend I found an acorn cup that appeared to be covered in a rust fungus. I remembered that there is a scarce rust that does this, Cronatium quercuum, so was quite pleased. However, whilst the orange is indeed spores, they are not the right shape for Cronartium...
An acorn cup covered in a yellowy-orange powder. A microscope image showing some near-spherical yellowy-orange spores.
December 1, 2025 at 8:15 PM
pumpkinspicenoun.bsky.social
Pumpkin Spice Genus Cronartium
November 25, 2025 at 4:47 PM
janavascortes.bsky.social
Pest survey card on non‐EU Cronartium spp. | EFSA
Source: www.efsa.europa.eu/en/supportin... @efsa-plants.bsky.social
Pest survey card on non‐EU Cronartium spp.
This document provides the conclusions of the pest survey card that was prepared in the context of the EFSA mandate on plant pest surveillance (M‐2020‐0114) at the request of the European Commission. ...
www.efsa.europa.eu
October 25, 2025 at 8:36 AM
fascinatedbyfungi.bsky.social
Big Ol’ knob of western gall rust (Cronartium harknessii) on a pine tree en.wikipedia.org/wiki/Pine-pi...
June 25, 2025 at 1:47 AM
bigearthdata.ai
RustMapper: White Pine Blister Rust Risk Across High Elevation Forests in the Western United States
->Nature | #Forest | More info from EcoSearch
RustMapper: White Pine Blister Rust Risk Across High Elevation Forests in the Western United States
The Cronartium ribicola life cycle is complex, involving two hosts and five spore stages. The primary infection of pine hosts occurs via fungal infection through needle stomata. Following an incubation period of one or more years, the rust fungus colonizes...
www.nature.com
June 20, 2025 at 5:48 PM
sigmafacto.bsky.social
We selected three extreme cases, being fast insertion/fast deletion/stable genome (Cronartium ribicola), slow insertion/slow deletion/stable genome (Puccinia coronata), and fast insertion/slow deletion/obese genome (Austropuccinia psidii), typical of eukaryotic genome dynamics.
June 7, 2025 at 2:50 PM
fungiwithbengi.bsky.social
Cronartium harknessii - Western Pine Gall Rust
This one is theoretically indistinguishable to the naked eye from C. quercuum in states/provinces where their ranges overlap but C. quercuum would require oaks to be present in order to spread to the pines. This one can go pine to pine.
My hand holding onto a gall on a Jack Pine branch. The gall is filled with bright orange, powdery spores of a rust fungus.
May 23, 2025 at 6:52 PM
pascal-frey.bsky.social
#IUFRO25CH Ke Zhang @mycopat.bsky.social is laying the ground for scots #pine #resistance breeding in Sweden — recent progress in #Cronartium pini inoculation and identification
May 22, 2025 at 7:47 AM
wyldsage.bsky.social
strange fungus
cronartium
#photography
#sedona
#botany
70mm 1/50 f3.5 iso1280
May 11, 2025 at 3:00 PM
rpilze.masto.nu.ap.brid.gy
Cronartium flaccidum ex Pinus sylvestris

#cronartiumflaccidum #cronartium #pinussylvestris #pinus #waldkiefer #scotspine #pinsylvestre #pinosilvestre #kienzopf #kiefernrindenblasenrost #rostpilz #rustfungus #phytopathology #fungus #pilz #nature #fungifriends
April 23, 2025 at 3:49 PM
ruhrpottpilze.bsky.social
Cronartium flaccidum ex Pinus sylvestris

#Cronartiumflaccidum #Cronartium #Pinussylvestris #Pinus #Waldkiefer #Scotspine #Pinsylvestre #pinosilvestre #Kienzopf #Kiefernrindenblasenrost #Rostpilz #Rustfungus #Phytopathology #Fungus #Pilz #Nature #FungiFriends
April 23, 2025 at 3:43 PM