A woman giving a talk with a slide showing diseased pea roots
Maria Purnamasari introduces an oomycete causing root rot in peas. Can beneficial bacteria be used for control?
To do so, we need to test ways that microbes are communicating/contacting.
Director co-culturing of Pseudomonas with Aphanomyces shows attachment & feeding of ๐ฆ
#PlantHealth2025
04.08.2025 20:51 โ ๐ 12 ๐ 4 ๐ฌ 1 ๐ 0
A woman standing on a podium giving a talk with a PowerPoint slide about cacao
Mariana Herrera Corzo presents on an appropriately tropical crop for the beautiful Hawaii location of #PlantHealth2025.
Phytophthora palmivora and P. megakarya both infect cacao, but with different outcomes. Variant calling used to do pop gen on the two species; structure reflects host and geo.
04.08.2025 00:07 โ ๐ 4 ๐ 1 ๐ฌ 0 ๐ 0
Ben Hoyt conducting a population genomic analysis of the โbulldozerโ Phytophthora cinnamomi #planhealth2025
04.08.2025 19:56 โ ๐ 4 ๐ 2 ๐ฌ 1 ๐ 0
Check out this poster on the physiology and laurel wilt susceptibility of experimental Phytophthora-resistant# avocado #rootstocksโfeaturing promising tolerance in key combinations. The future of disease-resilient avocado production. #ASHS2025 #PlantScience #horticulture @ashs-hort.bsky.social
31.07.2025 17:25 โ ๐ 2 ๐ 1 ๐ฌ 0 ๐ 0
The painting shows a potato stem infected with potato blight. The plant has four compound leaves. The lower leaves show clear lesions, while the upper leaves appear wilted and dried. In the top-right corner, a potato tuber is visible, showing dark brown lesions characteristic of late blight infection.
In 2024 I painted potato blight (Phytophthora infestans) for the August illustration of the BSPP plant pathogens calendar.
bspp.org.uk/product/...
01.08.2025 10:59 โ ๐ 18 ๐ 1 ๐ฌ 1 ๐ 0
A fallow field with remnants of pineapple
A guide showing the way pineapple is propagated by taking off individual shoots
One of my favorite parts of any #PlantHealth2025 meeting - the field trips!
Iโm on the post-harvest committeeโs trip focused on tropical ag.
Weโre at Dole learning about how the acidic soil works great for pineapple growth because it helps suppress Phytophthora. But nematodes are the big issue!
02.08.2025 18:53 โ ๐ 10 ๐ 4 ๐ฌ 1 ๐ 0
Christmas tree growers keep watchful eye on spread of dangerous mould | CBC News
Christmas tree growers in Atlantic Canada are monitoring the spread of a disease and looking for ways to combat it.
Christmas tree growers keep watch on newly discovered root rot disease. The disease has spread from US into ON and QC, now found in NB and NS.
The person interviewed for the story described phytophthora as a slime mold. That's wrong, it's an oomycete, related to algae.
www.cbc.ca/news/canada/...
27.07.2025 17:37 โ ๐ 3 ๐ 1 ๐ฌ 0 ๐ 0
Intraspecies sequence-graph analysis of the Phytophthora theobromicola genome reveals a dynamic structure and variable effector repertoires https://www.biorxiv.org/content/10.1101/2025.07.17.665439v1
25.07.2025 19:33 โ ๐ 1 ๐ 1 ๐ฌ 0 ๐ 0
Formatted pdf now available. Over 100 authors from across the world agree to protecting the genus Phytophthora against burdensome and unnecessary taxonomic change apsjournals.apsnet.org/doi/10.1094/...
23.07.2025 09:22 โ ๐ 3 ๐ 3 ๐ฌ 0 ๐ 1
Author's image of peeled potato tuber showing early infection of Phytophthora infestans, the cause of potato late blight. Tracking of mycelial progress through tuber visible by potato resistance reaction.
Pleased to publish a @phytopathology.bsky.social paper with West Bengal State University demonstrating seed tubers as source of #lateblight #phytophthora epidemics in the Indian plains.
apsjournals.apsnet.org/doi/epdf/10....
23.07.2025 09:41 โ ๐ 2 ๐ 2 ๐ฌ 2 ๐ 0
๐ณ Quercus trojana, a remarkable semi-evergreen oak of the Balkans, Tรผrkiye, and southern Italy, finally has its forests classified! Our international team analyzed vegetation plots across the speciesโ entire range and created the first vegetation classification of Quercus trojana forests.
22.07.2025 22:13 โ ๐ 3 ๐ 3 ๐ฌ 1 ๐ 0
Carolina stands in front of her poster display at the conference. Her poster is titled: "Building a Musa NLRome to understand bananas."
Today at #2025ISMPMI PhD researcher @acarolinaolave.bsky.social is presenting her research poster on work with plant biotech company Tropic, characterising immunity in Musa cultivars to identify NLR candidates against #Fusarium oxysporum TR4.
๐ 13:30 - 15:15
๐ Poster No: P-016
#MPMI2025
17.07.2025 09:03 โ ๐ 7 ๐ 2 ๐ฌ 0 ๐ 0
#2025ISMPMI - first new to nature chimeric NLR sensors being created, with integrated domains that do not have sequence or structure matches in the recorded life - raises questions on assessing biosafety & food safety aspects for these immune receptors for lab and field studies.
17.07.2025 09:15 โ ๐ 5 ๐ 2 ๐ฌ 0 ๐ 0
๐ฒ๐ค INIAV recently welcomed a delegation from the Korea Forest Service ๐ฐ๐ท, sharing over 25 years of experience in managing the pinewood nematode in Portugal ๐ชฑ๐ต๐น.
โจ PurPest and FORSAID were showcased, drawing great interest from our Korean colleagues!
๐ Read our post at www.purpest.eu/news/pwn-glo...
17.07.2025 14:15 โ ๐ 4 ๐ 3 ๐ฌ 0 ๐ 0
๐จ New @biorxivpreprint alert! ๐จ
We are thrilled to share our latest findingsโbuilding on our earlier work on suppressors of helper NLRs of the NRC familyโa Phytophthora infestans L-shaped effector captures resistosome assembly intermediates of tomato NRC3!
www.biorxiv.org/content/10.1...
1/10
16.07.2025 12:27 โ ๐ 30 ๐ 12 ๐ฌ 3 ๐ 0
The Goss Lab is at #2025ISMPMI! Come see our posters on Phytophthora palmivora virulence (P-271), cacao defense responses (P-022), and Xanthomonas evolution (P-300). Letโs connect and chat about plant-pathogen interactions, genomics, and cacao ๐ซ#
14.07.2025 06:24 โ ๐ 7 ๐ 2 ๐ฌ 0 ๐ 0
A person giving a talk on a stage with purple lighting. A slide asks the question how do plants treat a symbiont and pathogen in the same cell?
Working with N. benth, Phytophthora, and Funneliformis, @dromius.bsky.social asks how plants treat a symbiont and pathogen in the *same* cell?
The presence of arbuscular mycorrhiza fungi within a cell causes a local change in phospholipid signatures as the pathogen tries to invade.
#2025ISMPMI
14.07.2025 13:26 โ ๐ 14 ๐ 7 ๐ฌ 1 ๐ 0
#OMGN2025 Vivianne Vleeshouwers on potato resistance and Phytophthora diversity- and this slide of her work is part of my lectures - high throughput discovery of resistant germplasm/R gene loci
12.07.2025 13:52 โ ๐ 9 ๐ 1 ๐ฌ 1 ๐ 0
#OMGN2025 Mariana Herrera Corzo also works on 87 isolates of the arguably most interesting plant pathogen.
12.07.2025 09:18 โ ๐ 4 ๐ 1 ๐ฌ 1 ๐ 1
#OMGN2025 Ina Schlathoelter contributed to saving chocolate by studying how cacao pods respond to its Phytophthora pathogens. Some cocoa varieties/clones are differentially resistant to palmivora GH49 and megakarya GH34.
12.07.2025 09:02 โ ๐ 3 ๐ 2 ๐ฌ 0 ๐ 0
Why Iโm skipping the Congress this year (And why you should still publish your posters)
Publishing your poster creates a verifiable and citable record of your work. It also protects you from bad actorsโโโthe evidence will beโฆ
I just published: Why Iโm skipping the Congress this year (And why you should still publish your posters)
Publishing your poster creates a citable record and protects you from bad actors.
#ISMPMI2025 #OpenMPMI #AcademicChatter #PhDchat
medium.com/p/why-im-ski...
11.07.2025 13:55 โ ๐ 52 ๐ 25 ๐ฌ 9 ๐ 6
Thrilled to share our latest preprint! This work started during my PhD and was finished together with @jmadhuprakash.bsky.social. We found a Phytophthora infestans L-shaped effector that bridges a host TOL protein to activated NLRs to suppress immunity!
www.biorxiv.org/content/10.1...
1/15
09.07.2025 13:03 โ ๐ 56 ๐ 17 ๐ฌ 2 ๐ 2
An effector from the potato late blight pathogen bridges ENTH-domain protein TOL9a to an activated helper NLR to suppress immunity
Pathogens counteract central nodes of NLR immune receptor networks to suppress immunity. However, the mechanisms by which pathogens hijack helper NLR pathways are poorly understood. Here, we show that an effector from the potato late blight pathogen Phytophthora infestans bridges the host protein NbTOL9a, a putative member of the host ESCRT pathway, to a helper NLR to suppress immunity. In this work, we solved the crystal structure of the RXLR-LWY effector AVRcap1b in complex with the ENTH domain of NbTOL9a. The structure revealed that unlike other RXLR-LWY effectors, AVRcap1b has a novel L-shaped fold and defines a new structural family of effectors in the Phytophthora genus. Moreover, we defined the AVRcap1b/NbTOL9a binding interface and designed effector mutants that don't bind NbTOL9a, impairing immune suppression. This indicates that ENTH binding is required for full virulence activity of this effector. Lastly, we show that AVRcap1b associates specifically with activated NbNRC2 independently of NbTOL9a binding. This suggests that the effector functions as a bridge that interconnects NbNRC2 with the NbTOL9a pathway. These results illustrate an unprecedented pathogen mechanism to hijack helper NLR pathways and suppress immunity. ### Competing Interest Statement T.O.B. and S.K. receive funding from industry on NLR biology and cofounded a start-up company (Resurrect Bio Ltd.) on resurrecting disease resistance. M.P.C., L.D., and S.K. have filed patents on NLR biology. M.P.C. and L.D. have received fees from Resurrect Bio Ltd. The other authors declare that they have no competing interests. European Research Council, https://ror.org/0472cxd90, 743165 British Society for Plant Pathology, https://ror.org/04zj17j36 Biotechnology and Biological Sciences Research Council, BB/P012574, BBS/E/J/000PR9795, BBS/E/J/000PR9796, BBS/E/J/000PR9797, BBS/E/J/000PR9798, BB/V002937/1
Nice preprint! Structure of AVRcap1b from Phytophthora reveals a novel fold, and structural effector family. AVRcap1b targets the helper NLR NbNRC2. #plantimmunity
www.biorxiv.org/content/10.1...
08.07.2025 15:15 โ ๐ 17 ๐ 6 ๐ฌ 0 ๐ 0
Ph.D. Candidate @ UCR. Population genomics of P.cinnamomi from avocado and strategies to control avocado PRR.
UMN Plant Pathology Postdoc. Studying Biosurveillance of Invasive Forest Pathogens in Minnesota๐ฒ1st Gen. Forest Pathology and Mycology๐ Wolverhampton Wanderers Fan ๐บ
Professor Dept of Plant Pathology, University of Minnesota; Forest fungi, ethnomycology, tree diseases, wood microbiology...
General Manager at Bioeconomy Science Institute - @bioeconomyscience.bsky.social
Postdoc @slcuplants.bsky.social | Plant Microbe Interactions, Photosynthesis, Sustainability | Gates Cambridge Alumnus | โ๏ธ๐ฑ๐ฆ ๐งโ๐ฌ๐ณ๏ธโ๐๐ฌ๐งฌ
Professor and Extension Plant Pathologist. I work with corn, soybeans, fruit and vegetables. I am also a freelance photographer.
Views of an agronomist on soil, farming, and science. Evidence-based agriculture. Washington State University Extension. https://t.co/RZ11P3ozYm
Same @ on X.
PhD student in the Schornack Group @slcuplants.bsky.social. Interested in plant-microbe interfaces.
https://www.slcu.cam.ac.uk/people/alex-guyon
Mycologist. Posts and opinions are my own. Senior Lecturer at FABI (@Fabiteam1) and University of Pretoria (@uptuks). #mycotoxigenicfungi #fusarium #mycotoxins #talaromyces
Mycologist and biotechnologist, Department Head at Helmholtz-Zentrum fรผr Infektionsforschung, Acting President of the International Mycological Association and EIC of IMA Fungus
Natalia Ramรญrez Postdoc at @_SLU ๐ฉโ๐พ๐ธ๐ช๐งฌ๐ฅ | Phytophthora infestans | Potato | Microbiology | Metabolomics
Leader of the group Receptor Biochemistry @ipbhalle.bsky.social
Plant-pathogen, receptors, #proteases, fungi, effectors, crop protection
Mom
๐จ๐ด๐ฉ๐ช
https://www.ipb-halle.de/en/research/independent-junior-research-groups/research-groups/receptor-biochemistry
ERA Chair at Institute of Computer Science FORTH
Research Group Leader Heidelberg Institute for Theoretical Studies
Full Professor at Karlsruhe Institute of Technology
Crete lab: https://www.biocomp.gr/
Heidelberg Lab: http://www.exelixis-lab.org/
Evolutionary Biologist at Stanford. Rapid Evolution, Adaptation, and Genomics. Open Science advocate.
Eurasian Network for Collaborative Research on Tree-Root-Mycorrhizal-Pathogen Interactions in Forest Soils (EuAsiaN-ROOT). Started January 2025. EU funded (Horizon #101182734) https://euasianroot.ldf.mendelu.cz/
Books! Also, science, reason, humanism and progress. Molecular biology PhD student.
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