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Development and ultrastructure of glandular trichomes inpelargonium x fragrans ‘mabel grey’ (geraniaceae)

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Abstract

The glandular trichomes of leaves fromPelargonium xfragrans ‘Mabel Grey’ (Geraniaceae) were examined by light, scanning, and transmission electron microscopy. These trichomes had unicellular globular heads and stalks of different lengths and features. Two types were classified: Type I, with an elongated, large head and a short (100 µm), cylindrical stalk that was more apparent on the adaxial surface; and Type II, with a spherical, small head and a long (300µm), conical stalk that was more pronounced on the abaxial surface. The ultrastructure of secretory cells from both types was distinguished by a well-developed endoplasmic reticulum, mitochondria, plastids, dictyosomes, and numerous vacuoles that likely were involved in the storage and transport of lipophilic substances. Plasmodesmata were frequent on the walls of the secretory and stalked cells. Here, we discuss the implication of structural differentiation in these trichomes.

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Authors and Affiliations

  1. Department of Biological Sciences, Konkuk University, 143-701, Seoul, Korea

    Kyoung Nam Ko, Kyoung Whan Lee, Sang Eun Lee & Eun Soo Kim*

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  1. Kyoung Nam Ko
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  2. Kyoung Whan Lee
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  3. Sang Eun Lee
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  4. Eun Soo Kim*
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Correspondence to Eun Soo Kim*.

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Ko, K.N., Lee, K.W., Lee, S.E. et al. Development and ultrastructure of glandular trichomes inpelargonium x fragrans ‘mabel grey’ (geraniaceae). J. Plant Biol. 50, 362–368 (2007). https://doi.org/10.1007/BF03030668

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  • DOI: https://doi.org/10.1007/BF03030668

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