#Microscopyfriday
#MicroscopyFriday. 3D color-coded Erysiphe cruciferarum growing on the epidermis of #Arabidopsis. The little roundish structures are the haustoria.
September 11, 2026 at 6:27 AM
#Microscopyfriday Phytophthora palmivora (in yellow) and Nicotiana benthamiana chloroplasts (in magenta, autofluorescence).
June 5, 2026 at 2:46 PM
#MicroscopyFriday Even fungi have attitude. 🖕🍄😅

Captured during last week's microscopy session: a powdery mildew (Blumeria hordei) haustorium inside a barley leaf cell.

Stable fluorescence-expressing barley line, with the colors representing z-slice depth.
July 17, 2026 at 1:22 PM
I like the #Microscopyfriday idea and gonna post beautiful pictures from my lab. I start with Bipolaris sorokiniana attacking barley epidermis. Inverted picture. Note the nice halo around the appressorium like structure!
May 22, 2026 at 2:13 PM
New lab, similar setup - still working… kind of 😅
First barley–mycorrhiza experiment for me in Freising. Colonization isn’t quite where I want it yet, but found some really nice arbuscules 🔬 Here, a barley root cell with F. mosseae arbuscule, stained with WGA-Fluorescein #Microscopyfriday
May 22, 2026 at 7:37 AM
It is #Microscopyfriday. Chevron barley ear tissue stoma (magenta) invaded by Fusarium culmorum hyphae (green, wheat germ agglutinin staining). Note the substomatal vesicle like fungal strcture!
June 12, 2026 at 9:32 AM
. It´s #Microscopyfriday. Barley epidermial cell under plasmolysis. Type II ROP GTPase marker, GFP-RAC3.
June 5, 2026 at 3:05 PM
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#MicroscopyFriday: One of my favourites. Tonoplast marker line of Arabidopsis under attack from Blumeria hordei.
July 3, 2026 at 3:50 PM
It´s #Microscopyfriday again. Today, I found this on my harddrive. A GFP and barley Bax Inhibitor-1 expressing epidermal cell after single cell transformation of powdery mildew resistant mlo5 barley. Cell-autonomous heterologous compelementaion of susceptibilty allows for fungal sporulation.
May 29, 2026 at 1:49 PM
🔬🌱 #MicroscopyFriday

Confocal image from infected Arabidopsis tissue. We observed these intriguing filamentous structures accumulating during infection (with one of the most famous immune components 😜)

Any guesses what they are? 🤔

#PlantScience #CellBiology #PlantImmunity #Proteostasis
June 19, 2026 at 10:20 AM
#Microscopyfriday New lab, new luck ✨
Watching Phytophthora palmivora zoospores happily zoom around never gets old 🏊‍♀️
And the follow-up Benthi infection worked too ☑️
May 29, 2026 at 6:16 PM
It´s #Microscopyfriday. Tobacco expressing the activated barley type I ROP RACB-G15V loses polarity in root hairs and growth isotropically.
July 17, 2026 at 6:29 AM
#MicroscopyFriday #MicroscopyOfToday Bubble Party in Barley 🫧 Not sure yet, the bubbles are, what I think they are but looks promising. Barley epidermis cell expressing secretory mCherry and cytosolic GFP marker. Cell was treated with the toxin Brefeldin A 24 hours before imaging.
September 4, 2026 at 4:41 PM
#MicroscopyFriday It's so hot today, I feel like I must be glowing like this Arabidopsis seed 🔥🥵 In reality: DsRed fluorescence as a handy tool to to spot transformed seeds.
June 26, 2026 at 2:33 PM
It´s #MicroscopyFriday. Single cell transformation of barley stomata subsidiary cell. RACB-RIC171 complex (green), mCherry (red), cell wall autofluorescence (light blue). chlorophyll fluorescence (mighnight blue). Have a nice weekend.
July 31, 2026 at 1:17 PM
It´s #MicroscopyFriday. Here a nice example of Fusarium culmorum invading barley lemma epidermis. Propidium-iodide stains the plant cell wall, ink fungal surface strcutures and wheat germ agglutinin post-invasive fungal cell wall. Overlay of three detectors with CLSM transmission channel.
August 7, 2026 at 6:29 AM
It´s #Microscopyfriday. This time I have a 25 years old picture of non-adapted Blumeria graminis. f.sp. tritici for you attempting to penetrated barley Pallas-mlo5. Quite hopeless. Overlay of DIC and autofluorescence images, heavily photoshoped for the beauty of it.
August 28, 2026 at 3:25 PM
#Microscopyfriday A while ago, I was looking for phenotypes in my barley mutants and thought the length of the rachilla hairs could be changed. Was not the case but the resulting SEM pictures were still beautiful. Side fact I learned on the way: rachillas can be used as barley cultivar indicators
June 12, 2026 at 2:06 PM
And on the pathogen side 🦠
Phytophthora palmivora also behaves — Mycelium and Sporangia production and yes, fluorescence is still going strong ✨LILI-YKDEL Spores lighting up nicely.
#PlantPathology #Oomycetes #Microscopyfriday
May 22, 2026 at 7:37 AM
#MicroscopyFriday #MicroscopyOfTheDay Something went really wrong for these barley stomata on the left picture. Love how the little cell next to the lips of the lower stoma was just sqeezed in somehow. The normal ones (on the right) look usually like 🍔s.
July 3, 2026 at 2:50 PM
And a bit of cell biology this week🔬
Testing protein–protein interactions via BiFC in barley —
A great view on the cytosol + microtubule network in barley leaf epidermis cells ✨
#CellBiology #Microtubules #BiFC #Microscopyfriday
May 22, 2026 at 7:37 AM