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Ash Wood Xylem (SEM)
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Ash Wood Xylem (SEM)
Ash wood xylem. Scanning electron micrograph (SEM) of the wood of an ash tree (Fraxinus excelsior) in cross section (ts) and tangential longitudinal section (tls) showing xylem tracheids. The ash tree has been in the news because of Chalara fraxinea fungus, commonly known as Ash dieback which was discovered for the first time in the UK in a Buckinghamshire nursery in February 2012. It appears to be rapidly spreading with reports of the disease now coming in from many counties. Thousands of ash trees have been destroyed to try and stem the spread of the disease and the government has announced a ban on imports of ash trees as well as movement restrictions within the UK. Ash dieback causes crown dieback and leaf loss and usually leads to tree death, although some trees do survive, probably because of genetic resistance. Magnification x1180 (x300 at 10cm wide)
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Media ID 9207949
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Fungus Xylem Ash Dieback Ash Tree
EDITORS COMMENTS
This print showcases the intricate beauty of ash wood xylem, captured using a scanning electron microscope (SEM). The image reveals both cross and tangential longitudinal sections of the wood from an ash tree (Fraxinus excelsior), highlighting the delicate network of xylem tracheids. However, this image also serves as a poignant reminder of the devastating impact that Chalara fraxinea fungus, commonly known as Ash dieback, has had on these majestic trees. In February 2012, this destructive fungal infection was discovered for the first time in a Buckinghamshire nursery in the UK. Since then, it has rapidly spread across many counties. To combat its spread, thousands of ash trees have been destroyed and strict measures have been implemented by the government to restrict imports and movement within the country. Ash dieback typically causes crown dieback and leaf loss, ultimately leading to tree death. However, some trees show resilience due to genetic resistance. In this photograph's magnified view at 1180 times its original size (300 times at 10cm wide), we are reminded not only of nature's intricate wonders but also of our responsibility to protect and preserve our natural environment against threats like Ash dieback.
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