Stinging nettle leaf, SEM

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Stinging nettle leaf, SEM

Stinging nettle leaf. Coloured scanning electron micrograph (SEM) of a stinging nettle leaf (Urtica dioica). Its long poisonous hairs protect the plant from herbivores. When touched, they cause pain and inflammation to the skin by the release of a mixture of acetylcholine (a neurotransmitter that activates nerve cells) and histamine (a substance produced in allergic reactions). The shorter hairs are harmless. The nettle plant is common on grassland and wasteland throughout Europe. Magnification: x30 at 6x7cm size

Science Photo Library features Science and Medical images including photos and illustrations

Media ID 6289957

© SUSUMU NISHINAGA/SCIENCE PHOTO LIBRARY

Hair Hairs Hairy Poison Poisonous Protection Protective Stinging Nettle Surface Toxin Urtica Dioica

EDITORS COMMENTS
This print showcases the intricate details of a stinging nettle leaf, captured through a coloured scanning electron microscope (SEM). The image reveals the plant's defense mechanism against herbivores - long poisonous hairs that safeguard it from harm. When these hairs come into contact with skin, they unleash a potent combination of acetylcholine and histamine, causing intense pain and inflammation. While the longer hairs are harmful to touch, the shorter ones pose no threat. This fascinating adaptation allows the stinging nettle to thrive in various grasslands and wastelands across Europe. The vibrant green hues of this SEM image highlight the surface texture and protective nature of these leaves. It serves as a reminder of nature's ingenuity in developing unique strategies for survival. Displayed at 6x7cm size with a magnification factor of x30, this photograph offers viewers an up-close look at one of nature's most intriguing creations. Whether you appreciate botany or have an interest in plants' defensive mechanisms, this print is sure to captivate your imagination.

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