Dana MacGregor
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plantenv.bsky.social
Dana MacGregor
@plantenv.bsky.social
160 followers 41 following 18 posts
Molecular Geneticist | Weed Biologist | https://orcid.org/0000-0003-0543-0408 | Understanding weedy resilience to shape sustainable agriculture
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plantenv.bsky.social
We tried and we tried... but none of our virus-enabled reverse genetics tricks worked in rice! We're trying to let the scientific community know to keep others from wasting their time trying the same things. www.rothamsted.ac.uk/news/rices-r... with the full article at doi.org/10.1101/2025...
Figure 3. Virus-mediated protein overexpression (VOX) using Foxtail mosaic virus (FoMV) vector. Phenotypes of wheat (A) and rice (D) leaves that have been inoculated with FoMV carrying a multi cloning site (MCS) or GFP gene under white light or using blue light with a GFP filter set. Photos of the fourth leaf, up next the rub-inoculate leaf with a sap containing grinded leaves of Nicotiana benthamiana agroinfiltrated with FoMV:GFP and the abrasive carborundum. Phenotype of whole wheat (B) and Setaria viridis (C) plants that have been inoculated with FoMV:GFP showing systemic infection.
September 3, 2025 at 2:39 PM
plantenv.bsky.social
Sometimes you just have to shout "Duck" and see what happens. Credit to my daughter for incredible photo and www.english-heritage.org.uk/visit/places... for the great location.
Image of a female duck taken at https://www.english-heritage.org.uk/visit/places/wrest-park/
May 7, 2025 at 8:53 AM
plantenv.bsky.social
Grant deadlines & manuscript revisions have kept me busy - but this sneakily resilient ivy-leaved toadflax flourishing in the walls and crevices at Sizergh @nationaltrust.org.uk www.nationaltrust.org.uk/visit/lake-d... caught my eye over Easter. Even the prettiest plants are weeds to someone else!
Picture of ivy-leaved toadflax taken at Sizergh Gardens, National Trust, near Kendal, Cumbria, LA8 8DZ
April 25, 2025 at 2:08 PM
plantenv.bsky.social
#PhD Opportunity: A Greener Way to Control Weeds
We need new solutions to combat #Blackgrass; Could naturally occurring soil microbes hold the key?

Full details www.envision-dtp.org/2025/a-green...

Open to UK “home” applicants only.
DEADLINE: 17:00 Wed 12 March
dana.macgregor@rothamsted.ac.uk
🌱PhD Opportunity: A Greener Way to Control Weeds – Using the Soil Microbiome to Combat Blackgrass 🌱 Blackgrass is Western Europe’s most problematic weed. With evolved resistance to conventional control methods, it threatens UK crop production. We need new solutions. Could soil microbes hold the key? At Rothamsted Research, in collaboration with Lancaster University, we are offering a fully funded PhD through the Envision DTP. It aims to explore how naturally occurring soil microbes can suppress herbicide-resistant blackgrass and builds toward developing this interaction into a promising new approach to sustainable weed control. Further details at https://www.envision-dtp.org/2025/a-greener-way-to-control-weeds-using-the-soil-microbiome-to-combat-blackgrass/ ✅Eligibility: Open to UK “home” applicants only. Candidates should have a good honours degree in a relevant subject or equivalent qualifications and experience. Applicants who have previously completed an Envision Research Experience Placement (REP) will be guaranteed an interview. Interested? Apply! https://www.envision-dtp.org/projects/apply/ DEADLINE: 17:00 on Wed 12th March For informal enquiries, contact Dana MacGregor (Dana.MacGregor@Rothamsted.ac.uk).
February 17, 2025 at 10:33 AM
plantenv.bsky.social
Very excited to see both these papers out! Press release at www.rothamsted.ac.uk/news/new-seq... We've worked hard to understand Alopecurus weeds and having genomes for both A. myosuroides and A. aequalis will be incredibly enabling. Thanks so much to the many collaborators who have been involved!
Figure 1: Images highlighting differences in Alopecurus aequalis (shortawn foxtail or orange foxtail; a, c, e, & g) and Alopecurus myosuroides (black-grass; b, d, f, & h) morphologies. Images show flowering heads (a-b), seeds (c-d), at vegetative growth stage (e-f) and Kew Herbarium images (g-h). The flower spike of A. aequalis (a) has a blunt end rather than the tapered end in A. myosuroides (b). While both have single flowered spikelets, the anthers of A. aequalis are shorter compared to A. myosuroides (b). The mature seeds of these two species are easily distinguished (c: A. aequalis, d: A. myosuroides). A. aequalis has a more prostrate growth (e) while A. myosuroides is more upright (f). These differences can be seen in Herbarium images from Royal Botanic Garden Edinburgh (https://data.rbge.org.uk/search/herbarium/) for A. aequalis (Barcode: E01358418, g), and A. myosuroides (Barcode: E01137779, h).
January 10, 2025 at 9:25 AM
plantenv.bsky.social
Thanks also to @biggenomes.bsky.social!

Data below shows the Orange foxtail genome structure is more similar to barley than blackgrass!

We expect this new T2T quality genome will be a valuable tool for researchers. Although fully open acces, I would love to hear from anyone using it.
Figure 5: Whole genome comparison between Hordeum vulgare, Alopecurus aequalis and Alopecurus myosuroides. a: GENESPACE comparison showing synteny between the 3 species (* indicates that the chromosome has been reversed). b: Detailed alignment showing the position of the A. aequalis chromosome 1 centromere (in red) in relation to the breakpoint.
December 19, 2024 at 4:34 PM
plantenv.bsky.social
Last days to apply for www.exeter.ac.uk/study/fundin... #PhD The enemy of my enemy. Answers to "why does Zymoseptoria infect wheat but not wheat's worst weed blackgrass?" BBSRC #SWBioDTP studentship for 2025. Closing midnight 11th December 2024. @rothamsted.bsky.social @quietscientist.bsky.social
Images of blackgrass and wheat that have been infected with Zymoseptoria showing the intriguing outcome that blackgrass is able to resist Septoria blotch.
December 10, 2024 at 12:35 PM
plantenv.bsky.social
📢 SWBio DTP PhD Opportunity: What Makes Weeds Flower?
Disrupting Seed Production in Herbicide-Resistant Weeds to Improve Sustainable Agriculture @rothamsted.bsky.social
📄 www.swbio.ac.uk/agriculture-...
Apply samis.bath.ac.uk/urd/sits.urd...
🗓️ Closing Wed 11 Dec
#PhD #WeedScience #Bioinformatics
November 22, 2024 at 9:26 AM
plantenv.bsky.social
📢 SWBio DTP PhD Opportunity - The enemy of my enemy… why does Zymoseptoria infect wheat but not wheat’s worst weed blackgrass?
📄 Full details: www.swbio.ac.uk/agriculture-...
Apply www.exeter.ac.uk/study/fundin...
🗓️ Closing Date: Midnight, Wed 11 Dec #PhD #PlantPathology #WeedScience #AgriResearch
November 22, 2024 at 9:20 AM