Morphology and development of secretory structures in Hypericum perforatum and H. richeri |
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Authors: | L Maffi L Camoni R Baroni Fornasiero A Bianchi |
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Institution: | Department of Evolutive and Functional Biology, University of Parma. Viale delle Scienze, 43100 Parma, Italy. E-mail:;Department of Paleobiology Museum and Botanical Garden, University of Modena and Reggio Emilia. Viale Caduti in Guerra. 127, 41100 Modena, Italy |
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Abstract: | Secretory organs are a specialised anatomical feature of plants, these tissues function in the production and/or storage of specific chemical substances, which often have pharmacological properties. The genus Hypericum is characterised by the presence of specialised secretory structures such as black nodules, translucent glands and secretory canals. The presence of these structures is not homogeneous for all the species or between the various floral and vegetative parts of the plants. In this study, we have compared the distributions, morphology and development of secretory structures in the leaves of H. perforatum and H. richeri. Whilst, black nodules occurred in both species, translucent glands followed different development stages depending on the leaf age. |
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