Yew Tree Leaf Surface (SEM)

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Yew Tree Leaf Surface (SEM)

Yew tree leaf surface. Coloured scanning electron micrograph (SEM) of the surface of the leaf of an English yew (Taxus baccata). The little pores are stomata which regulate gas and water exchange between the leaf and the atmosphere. During the day they open to allow the exchange of gases during photosynthesis, closing at night to prevent water loss. They are opened and closed by two bordering guard cells. Yew is a long-lived poisonous tree which inhabits cool, hilly areas throughout Europe and northern Asia. Magnification x224 (x55 at 10cm wide)

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Media ID 9213231

© POWER AND SYRED/SCIENCE PHOTO LIBRARY

Conifer Evergreen Gaseous Exchange Plants Stoma Stomata Taxus Baccata English Yew Softwood

EDITORS COMMENTS
This print showcases the intricate surface of a Yew tree leaf, captured using a scanning electron microscope (SEM). The vibrant colors highlight the beauty and complexity of nature at a microscopic level. The image reveals numerous tiny pores known as stomata, which play a vital role in regulating gas and water exchange between the leaf and its surroundings. During daylight hours, these stomata open to facilitate the exchange of gases necessary for photosynthesis. However, they close at night to prevent excessive water loss. Two neighboring guard cells control the opening and closing mechanism of these stomata, ensuring efficient gaseous exchange while conserving precious water resources for this long-lived evergreen tree. The English yew (Taxus baccata), depicted in this photograph, is an iconic plant that thrives in cool hilly regions across Europe and northern Asia. Its softwood branches are adorned with dark green leaves like those shown here. It's important to note that while visually stunning, this yew tree is also poisonous if ingested by humans or animals. Nevertheless, its presence adds an air of mystique to landscapes where it grows. With a magnification factor of x224 (x55 at 10cm wide), this SEM image offers us a glimpse into the fascinating world hidden within even the most common plants we encounter daily.

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