Pomegranate Dissection & Cutaway
Inside the world of infection
Fungal pathogens manage to simultaneously pacify their plant victim’s defences whilst seizing host nutrition, creating a very difficult situation for any plant that becomes infected.
Here you can see three different stages of the fungal hyphae of Magnaporthe grisea invading and taking-over a plant cell.
Top panel: After 48h of infection
Middle panel: After 72h of infection
Bottom panel: After 96h of infection
Rice blast disease, which is caused by M.grisea, is one of the greatest pathogen threats to rice crops globally and since rice is an important food source its impact can be devastating.
Scientists from the Institute of Biological, Environmental and Rural Sciences at Aberystwth University, which is strategically funded by BBSRC, are studying the mechanisms behind fungal pathogen infection eventually hoping to reduce this major threat to modern agriculture.
Image from Mr Hassan Zubair from IBERS, Aberystwyth University
For more images of plant infection to go:
This terrarium hasn’t been opened in 40 years! It is completely self-sufficient—the bacteria in the compost breaks down dead leaves to give the plants the carbon dioxide they need, and the moisture in the air condenses on the glass and returns to the soil to feed the plants’ roots.
Barrett’s esophagus is diagnosed when simple columnar epithelium with goblet cells replaces the normal stratified squamous epithelium lining of the esophagus. Goblet cells are usually found not in the esophagus but in the lower GI tract. This micrograph shows the Barrett’s esophagus cells on the left and the normal squamous epithelium cells on the right. Barrett’s esophagus is highly linked with esophageal cancer.
These black roses grow naturally in the tiny village of Halfeti, Turkey. The particular soil conditions and pH levels of the groundwater from the river Euphrates causes the roses to fade from deep crimson to black during the summer. (source)
a redwood in Humboldt Redwoods State Park, California
Cross section of Liana stem (climbing tropical plant) (40x) (via Cross section of Liana stem (climbing tropical plant) | Brightfield | Nikon Small World)
Daisy—unwrapped petals (5x) (via Daisy-unwrapped petals | Brightfield | Nikon Small World)
A liana is a woody climber that starts at ground level, and uses trees to climb up to the canopy where it spreads from tree to tree to get as much light as possible. Lianas are especially characteristic of tropical moist deciduous forests and rainforests. These climbers often form bridges between the forest canopy, connect the entire forest and provide arboreal animals with paths across the forest. This is a Monkey Ladder vine.
Detached retina of red-eared turtle (sp. Pseudemys scripta elegans), showing oil droplets located in the outermost inner segments of cone photoreceptors (400x) (via Detached retina of red-eared turtle (sp. Pseudemys scripta elegans), showing oil droplets located in | Brightfield | Nikon Small World)
Transverse optical section through villi of small intestine (900x)
The villi, little finger-like projections all over the intestine, provide increased surface area which allows for rapid digestion.
(via Transverse optical section through villi of small intestine | 2-photon | Nikon Small World)