Glandular trichome on tomato leaf

Glandular trichome on tomato leaf

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Credit: POWER AND SYRED/SCIENCE PHOTO LIBRARY

Caption: Light micrograph of a stalked secretory gland or trichome on the leaf epidermis of a tomato plant, Lycopersicon esculentum. The stalk bears a clump of four glandular cells which secrete a toxic cocktail of substances, including nicotine and solanine, as a defence mechanism and natural pest control. A great many plants possess glandular trichomes which secrete a variety of substances including nectar, aromatics and gums. Extrafloral substances are usually secreted as a defence against bacteria, fungi or predators whereas floral secretions attract insects for pollination purposes. Magnification: x200 at 35mm size.

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Keywords: botany, gland on tomato leaf, leaf, leaves, lycopersicon esculentum, nature, plant, plants, secretory gland on tomato lea, tomato, tomato leaf, trichome

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