The capitate and peltate glandular trichomes of Lavandula pinnata L. (Lamiaceae): histochemistry, ultrastructure, and secretion1
The morphology, histochemistry, and ultrastructural aspects of the secretion of Lavandula pinnata L. (Lamiaceae) glandular trichomes were studied in order to prepare for work on calcium distribution in normal and heat stressed plants. The secretory process was observed in both light and dark-grown p...
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Published in | The journal of the Torrey Botanical Society Vol. 135; no. 2; pp. 155 - 167 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
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810 East 10th Street, P.O. Box 1897, Lawrence KS 66044-8897 USA
Torrey Botanical Society
01.04.2008
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Abstract | The morphology, histochemistry, and ultrastructural aspects of the secretion of Lavandula pinnata L. (Lamiaceae) glandular trichomes were studied in order to prepare for work on calcium distribution in normal and heat stressed plants. The secretory process was observed in both light and dark-grown plants. The secretion of the capitate glandular trichomes consists of both lipophilic and polysaccharidic substances (mainly the latter), while peltate glandular trichomes only secrete lipophilic substances. Our ultrastructural results are consistent with the finding that plastids are the main organelle that synthesizes the lipophilic substances, especially terpenes, while dictyosomes synthesize polysaccharides. The essential oil is most likely transported directly by the RER, while the polysaccharides reach the plasma membrane via Golgi-derived vesicles. Exocytosis is the main way that secretory products move from the cell to the subcuticular space. There are no differences in gland development or secretion between the light and dark-grown plants. |
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AbstractList | The morphology, histochemistry, and ultrastructural aspects of the secretion of Lavandula pinnata L. (Lamiaceae) glandular trichomes were studied in order to prepare for work on calcium distribution in normal and heat stressed plants. The secretory process was observed in both light and dark-grown plants. The secretion of the capitate glandular trichomes consists of both lipophilic and polysaccharidic substances (mainly the latter), while peltate glandular trichomes only secrete lipophilic substances. Our ultrastructural results are consistent with the finding that plastids are the main organelle that synthesizes the lipophilic substances, especially terpenes, while dictyosomes synthesize polysaccharides. The essential oil is most likely transported directly by the RER, while the polysaccharides reach the plasma membrane via Golgi-derived vesicles. Exocytosis is the main way that secretory products move from the cell to the subcuticular space. There are no differences in gland development or secretion between the light and dark-grown plants. The morphology, histochemistry, and ultrastructural aspects of the secretion of Lavandula pinnata L. (Lamiaceae) glandular trichomes were studied in order to prepare for work on calcium distribution in normal and heat stressed plants. The secretory process was observed in both light and dark-grown plants. The secretion of the capitate glandular trichomes consists of both lipophilic and polysaccharide substances (mainly the latter), while peltate glandular trichomes only secrete lipophilic substances. Our ultrastructural results are consistent with the finding that plastids are the main organelle that synthesizes the lipophilic substances, especially terpenes, while dictyosomes synthesize polysaccharides. The essential oil is most likely transported directly by the RER, while the polysaccharides reach the plasma membrane via Golgi-derived vesicles. Exocytosis is the main way that secretory products move from the cell to the subcuticular space. There are no differences in gland development or secretion between the light and dark-grown plants. [PUBLICATION ABSTRACT] |
Author | Liao, Jing–Ping Kirchoff, Bruce K Huang, Shan–Shan |
Author_xml | – sequence: 1 givenname: Shan–Shan surname: Huang fullname: Huang, Shan–Shan organization: Graduate School of Chinese Academy of Sciences, Beijing, 100039, China – sequence: 2 givenname: Bruce K surname: Kirchoff fullname: Kirchoff, Bruce K organization: University of North Carolina at Greensboro, Department of Biology, Greensboro, NC 27402-6170 – sequence: 3 givenname: Jing–Ping surname: Liao fullname: Liao, Jing–Ping email: liaojp@scbg.ac.cn organization: South China Botanical Garden, Chinese Academy of Sciences, Key Laboratory of Digital Botanical Garden in Guangdong, Guangzhou, 510650, China |
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Copyright | Torrey Botanical Club Copyright Torrey Botanical Society Apr-Jun 2008 |
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SubjectTerms | Botany Cells Comparative analysis glandular trichomes histochemistry Lamiaceae Lavandula Lavandula pinnata L morphology Research s secretion Transmission electron microscopy ultrastructure |
Title | The capitate and peltate glandular trichomes of Lavandula pinnata L. (Lamiaceae): histochemistry, ultrastructure, and secretion1 |
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