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Morphological, histochemical and ultrastructural diversity of glandular trichomes in Lantana camara L. (Verbenaceae) and relation between glandular morphotype and secretion

Grant number: 13/07428-6
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): July 01, 2013
Effective date (End): June 30, 2015
Field of knowledge:Biological Sciences - Botany - Plant Morphology
Principal Investigator:Tatiane Maria Rodrigues
Grantee:Stefany Cristina de Melo Silva
Host Institution: Instituto de Biociências (IBB). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil
Associated research grant:08/55434-7 - Secretory structures in plant species from cerrado: structural, chemical and ecological approaches, AP.BTA.TEM


Glandular trichomes are epidermal appendixes which produce biologically active substances important for the interaction between plants and the environmental, besides their medicinal and commercial values. Among Verbenaceae species, the morphological and functional diversity of glandular trichomes is great and more than one trichome morphotype can be present in the same organ of a same plant. Studies indicate a possible relation between the morphological variations of glandular trichomes and the chemical composition of the produced secretion. However, most of the studies involving Verbenaceae species concerns the chemical compositions of the secretion; structural and histochemical studies are scarce and restrict to a few species. Lantana camara possesses glandular trichomes that produce essential oils with repellent properties against mosquitoes of Aedes (Rich) Vahl. genus and antimicrobial activity promoting their use in the treatment of several deceases. This proposal aims to study the morphological, histochemical and ultrastructural features of the glandular trichomes in leaves of L. camara in order to establish a relation between glandular morphotype and composition of the secretion. For this, we will employ usual techniques in light and scaning and transmission electron microscopy. The results may subsidize researches related to the prospection of bioactive compounds produced by these plants. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DOS SANTOS TOZIN, LUIZ RICARDO; DE MELO SILVA, STEFANY CRISTINA; RODRIGUES, TATIANE MARIA. Non-glandular trichomes in Lamiaceae and Verbenaceae species: morphological and histochemical features indicate more than physical protection. NEW ZEALAND JOURNAL OF BOTANY, v. 54, n. 4, p. 446-457, . (13/07428-6, 08/55434-7)
DE MELO SILVA, STEFANY CRISTINA; DOS SANTOS TOZIN, LUIZ RICARDO; RODRIGUES, TATIANE MARIA. Morphological and histochemical characterization of the secretory sites of bioactive compounds in leaves of Lantana camara L. (Verbenaceae). BOTANY, v. 94, n. 4, p. 321-336, . (13/07428-6)

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