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Morphology of Foliar Trichomes of the Chinese Cork Oak Quercus variabilis by Electron Microscopy and Three-Dimensional Surface Profiling

Published online by Cambridge University Press:  04 May 2011

Ki Woo Kim ,
Do-Hyun Cho  and
Pan-Gi Kim
Ki Woo Kim*
Affiliation:
School of Ecological and Environmental System, Kyungpook National University, Sangju 742-711, Korea
Do-Hyun Cho
Affiliation:
Department of Forest Resources Development, Korea Forest Research Institute, Suwon 441-350, Korea
Pan-Gi Kim*
Affiliation:
School of Ecological and Environmental System, Kyungpook National University, Sangju 742-711, Korea
*
Corresponding author. E-mail: [email protected]
Corresponding author. E-mail: [email protected]
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Abstract

Morphology of foliar trichomes was analyzed in Quercus variabilis by electron microscopy and three-dimensional surface profiling. Leaves from suppressed or dominant sprouts of the oak species were collected after a forest fire to unravel the effects of the disturbance factor on sprouting of the oak species. Scanning electron microscopy revealed two types of trichomes depending on the leaf surface. The trichomes on the adaxial surface were branched and constricted, and possessed a single row of thin-walled cells with a collapsed morphology (glandular branched uniseriate trichomes). Meanwhile, the trichomes on the abaxial surface were star-shaped, unfused with each other, and had 6 to 10 rays (nonglandular simple stellate trichomes). An apparent proliferation of trichomes was evident on the adaxial surface of the dominant sprouts. Uniseriate trichomes could be discernable as an elevation from the surface by white light scanning interferometry. By transmission electron microscopy, thin and convoluted cell wall, degenerated cytoplasm, and a single row of cells were characteristic of the trichomes on the adaxial surface. The thick cell walls of the mature trichomes on the abaxial surface represented the nonglandular nature. This is the first report on the morphological and ultrastructural characterization of foliar trichomes of the oak species.

Keywords

epidermisinterferometryQuercus variabilistrichomewax
Type
Biological Applications
Information
Microscopy and Microanalysis , Volume 17 , Issue 3 , June 2011 , pp. 461 - 468
Copyright
Copyright © Microscopy Society of America 2011

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