Cut leaf stalk of water lily
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Cut leaf stalk of water lily
False colour scanning electron micrograph of a section across a cut leaf petiole (stalk) of the water lily Nymphaea album. The water lily has overcome the difficulty of getting air to its submerged roots by having large diameter open tubes within the leaf petiole. These hollow tubes are connected directly to large air spaces in the leaves, which contribute to the plants bouyancy. The tubes are lined with epidermal cells & studded with branched trichomes (hairs, centre). Some tubes contain crystals of calcium oxalate (not seen). Their function is unknown. Oxalate is poisonous & may act as a deterrent to burrowing animals. Magnification: x10 at 6x4.5cm size
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6289805
© DR JEREMY BURGESS/SCIENCE PHOTO LIBRARY
Petiole Trichome False Coloured
EDITORS COMMENTS
This print showcases the intricate details of a cut leaf stalk from the water lily Nymphaea album. Through false colour scanning electron microscopy, we are able to witness the remarkable adaptations that enable this aquatic plant to thrive in its environment. The water lily has ingeniously solved the challenge of obtaining air for its submerged roots by incorporating large diameter open tubes within its leaf petiole. These hollow tubes connect directly to spacious air pockets in the leaves, contributing to the plant's buoyancy. Lining these tubes are epidermal cells and adorned with branched trichomes, resembling delicate hairs at their center. Interestingly, some of these tubes contain crystals of calcium oxalate, although their function remains unknown. It is speculated that oxalate may act as a deterrent against burrowing animals due to its poisonous nature. This serves as yet another example of nature's ingenious defense mechanisms. At a magnification level of x10 and printed at 6x4.5cm size, this image allows us to appreciate the beauty and complexity found within even the smallest components of plants. The vibrant false colours used enhance our understanding and admiration for botany while reminding us of nature's endless wonders.
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