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Development of Epidermal Idioblasts in the Reproductive Structures of Lycopersicon esculentum  

Park, Eun-Hee (Biology Department, Keimyung University)
Kim, In-Sun (Biology Department, Keimyung University)
Publication Information
Applied Microscopy / v.34, no.4, 2004 , pp. 295-303 More about this Journal
Abstract
Plants of Lycopersicon esculentum, containing various organic compounds, are known to develop idioblasts in their epidermis. Lycopersicon esculentum have long been investigated in many areas, but structural aspects of the epidermis of various organs have not been carried out in detail. Thus, the present study attempted to reveal the patterns of idioblast development, particularly those of the reproductive organs, in L. esculentum epidermis using scanning electron microscopy. The present study mainly focused on patterns of the stomata and trichome types. Two types of stomata were developed in the flowers and fruits: anomocytic stomata (stomata type I) were distributed normally throughout the epidermis, whereas actinocytic raised stomata (stomata type II) were found variously in different epidermal tissues. For the trichomes, both glandular and non-glandular types were developed in the epidermis. The former included peltate glandular trichomes having four head cells (trichome type I) and capitate multicellular glandular trichomes (trichome type II). The latter included non-glandular short trichomes (trichome type III) and considerably elongated trichomes with basal rosette cells (trichome type IV). In paticular, the raised stomata were well-developed in the peduncles and the peltate glandular trichomes were prominent in the sepal and ovary epidermis. Transmission electron microscopy on the ontogeny and ultrastructural differentiation of these idioblasts, associated with the current result, will aid us in better understanding of the structure and functional relationship in the epidermal differentriation of Lycopersicon esculentum.
Keywords
Development; Epidermis; Idioblasts; Lycopersicon esculentum; Reproductive structures;
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