Intracellular localization of capsaicin and its analogues, capsaicinoid, in Capsicum fruit 1. Microscopic investigation of the structure of the placenta of Capsicum annuum var. annuum cv. Karayatsubusa
スポンサーリンク
概要
- 論文の詳細を見る
Transverse sections of the placenta of hot pepper, Capsicum annuum var. annuum cv. Karayatsubusa, at different stages after flowering were examined microscopically. Examination of the cellular structure of the placenta using a light microscope revealed that some morphological changes took place mainly in the epidermal tissue of the placenta during maturation. Elongation of the epidermal cells and many osmiophilic granules were recognized in the epidermal cells of the placenta in which capsaicinoid was being formed and actively accumulated. Moreover, a granule-like structure having an absorption at 280 nm was also recognized by ultraviolet microscopy around the same region where the osmiophilic granules were observed. By electron microscopy, many electron-dense granules stained with glutaraldehyde and osmium tetroxide were observed both in the small vesicles and vacuoles of epidermal cells of the placenta. The electron-dense granules varied in size from smaller than 1 μm to larger than 2 μM in diameter. They were thought to be capsaicinoid and were observed only in the epidermal cells. There-fore, the epidermal tissue appeared to be the site of capsaicinoid accumulation.
- 日本植物生理学会の論文
著者
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IWAI Kazuo
Department of Radiology, Nihon University
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Iwai Kazuo
Department Of Food Science And Technology Faculty Of Agriculture Kyoto University
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Fujiwake Hideshi
Research Institute for Food Science, Kyoto University
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Suzuki Tetsuya
Research Institute for Food Science, Kyoto University
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Fujiwake Hideshi
Research Institute For Food Science Kyoto University
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Suzuki Tetsuya
Research Institute For Food Science Kyoto University
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