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KMID : 0381919990290010125
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Korean Journal of Microscopy
1999 Volume.29 No. 1 p.125 ~ p.136
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Ultrastructural study of Glandular Trichomes in Pelargonium peltatum
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Cho Bum-Suk
Ko Kyoung-Nam
Kim Eun-Soo
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Abstract
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The ultrastructure of glandular trichomes in Pelargonium peltatum has been studied with a light microscope, transmission, and scanning electron microscope. Two types of the glands, long-stalked and short-stalked capitate glands, are distinguished with their shape and size of the total glands. Both glands are extreamly abundant in the leaf veins and petioles. These glandular trichomes are consisted of one secretory cell, three stalk cells, and one basal cell. The secretory cells contain a large amount of smooth endoplasmic reticulum. They have also much plastids, vacuoles, Golgi apparati, and mitochondria. High electron-dense deposits are frequently present in vacuoles of secretory cells. It seems to be phenolic compounds which is thought as the major secretory precursors.
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KEYWORD
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Glandular trichomes, Ultrastructure, Pelargonium, Secretory cell
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