James McDonald
banner
jamesemcdonald.bsky.social
James McDonald
@jamesemcdonald.bsky.social
Prof. of microbial ecology at the University of Birmingham.
Decoding the tree microbiome 🌳🌲. He/him
Thanks, Sofia! Hope all is well
November 19, 2025 at 10:43 PM
11/ 📄 feedback welcome!
🔬 Huge thanks to our amazing team, collaborators and funders! @marccamb.bsky.social @cenococcum.bsky.social @drcarriebrady.bsky.social @bpettifor.bsky.social
BBSRC, NERC, DEFRA, Scottish Government.
November 19, 2025 at 3:18 PM
10/ Our work shows the potential of microbiome-based interventions for trees, just like those emerging in agriculture and human health. 🌍
November 19, 2025 at 3:14 PM
9/ This shows that tree microbiomes can be engineered to suppress disease — a promising strategy for forest health and conservation. 🌲🛡️
November 19, 2025 at 3:14 PM
8/ We then inoculated oak seedlings and logs with a disease-suppressive SynCom before pathogen challenge. The results were striking:
📉 Brenneria goodwinii (oak pathogen) ↓ 56% (seedlings), ↓ 71% (logs)
📉 Gibbsiella quercinecans (oak pathogen) ↓ 87% (seedlings), ↓ 95% (logs)
November 19, 2025 at 3:13 PM
7/ Next, we assembled synthetic microbial communities (SynComs) from these isolates. In vitro tests showed they could suppress oak pathogens. 🧪
November 19, 2025 at 3:12 PM
6/ We screened 22,000 isolates on agar plates for their ability to suppress oak pathogens linked to Acute Oak Decline - 341 of the isolates showed strong pathogen suppression. 💪🌱
November 19, 2025 at 3:12 PM
5/ These isolates belonged to taxonomic groups that represented 61% of the total bacterial and 87% of total fungal sequences found in oak trees, based on 16S rRNA gene and ITS sequencing, respectively. A major resource for tree microbiome research! 🌳🦠
November 19, 2025 at 3:11 PM
4/ We processed tree tissue samples for isolation in the field within a few hours of collection to maximise chances of culturing key microbiota, using our mobile lab setup.
November 19, 2025 at 3:11 PM
3/ We built a culture collection of >30,000 bacterial and fungal isolates from 150 oak trees across 30 sites in Britain — the largest culture collections of its kind🌿
November 19, 2025 at 3:10 PM
2/ Trees rely on their microbiome for health and resilience, but are increasingly impacted by disease. We asked ‘can we engineer these microbial communities to fight disease?’ 🌳🦠.
November 19, 2025 at 3:09 PM
2/ Trees rely on their microbiome for health and resilience, but are increasingly impacted by disease. We asked ‘can we engineer these microbial communities to fight disease?’ 🌳🦠.
November 19, 2025 at 3:06 PM
So pleased to see this Bex! Huge congratulations!!
November 14, 2025 at 3:46 PM
Really cool paper!
November 12, 2025 at 9:46 PM
Brilliant picture
November 7, 2025 at 7:02 PM
Reposted by James McDonald
Thank you, Dirk-Jan! We indeed enjoyed it with our Birmingham-Leiden collaboration group!
(Not tapas but restaurant part)

-with @marccamb.bsky.social @jamesemcdonald.bsky.social @xinmingxu.bsky.social and María Negre Rodríguez
November 4, 2025 at 10:24 PM