Leaf morphoanatomy of the medicinal Maytenus imbricata (Celastraceae): an ecological approach

  • Silvia Ribeiro-de Souza Faculdade de Ciências da Saúde, Universidade de Brasília. Campus Darcy Ribeiro, Asa Norte
  • Izabel Cristina Trindade Departamento de Farmácia, Escola de Farmácia, Universidade Federal de Ouro Preto. Morro do Cruzeiro, Ouro Preto
  • Maria Olívia Mercadante-Simões Departamento de Biologia Geral, Centro de Ciências Biológicas e da Saúde, Universidade Estadual de Montes Claros. Campus Professor Darcy Ribeiro http://orcid.org/0000-0001-8423-1276
  • Lucienir Pains-Duarte NEPLAM, Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais
  • Grácia Divina de Fátima Silva NEPLAM, Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais
  • Maria Cristina Teixeira Braga Messias Departamento de Biodiversidade, Evolução e Meio Ambiente, ICEB, Universidade Federal de Ouro Preto
  • Ariadna Conceição dos Santos Departamento de Biologia Geral, Centro de Ciências Biológicas e da Saúde, Universidade Estadual de Montes Claros. Campus Professor Darcy Ribeiro
  • Sidney Augusto Vieira-Filho Departamento de Farmácia, Escola de Farmácia, Universidade Federal de Ouro Preto. Morro do Cruzeiro, Ouro Preto
Keywords: cell wall strips, colleter, gelatinous fiber, xeromorphic

Abstract

Background. The leaves of many species of Maytenus are used to prepare herbal drugs to treat stomach ulcers.

Questions. In order to define key anatomical characters for the unambiguous species identification, the present study aimed to describe the leaf morphoanatomy of M. imbricata.

Species study. Maytenus imbricata Mart. ex Reissek (Celastraceae)

Study site and dates. Collected in an area of ‘campo rupestre’ - one of the Brazilian Savannah vegetation (20º22’11.02”S, 43º30’22.81”W) in August 2015.

Methods. The plant material was processed according to commonly used techniques in plant anatomy studies.

Results. The major anatomical characters for several species of Maytenus identification also present in M. imbricata are marginal teeth, conspicuous epicuticular wax, ciclocytic stomata, thick external periclinal wall with large pits on epidermal cells and vascular system with a closed loop shape in cross-section. Strips on the anticlinal walls on epidermal cells and conspicuous gelatinous fibers sheath are diagnostic for M. imbricata.

Conclusions. Strips on the anticlinal wall of the epidermal cell are reported for the first time for the genus. These xeromorphic traits help the species to survive in arid environments and may contribute to quality control of the raw material used in the production of herbal medicines.

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Author Biography

Maria Olívia Mercadante-Simões, Departamento de Biologia Geral, Centro de Ciências Biológicas e da Saúde, Universidade Estadual de Montes Claros. Campus Professor Darcy Ribeiro

Departamento de Biologia Geral

Professor

Leaf morphoanatomy of the medicinal <em>Maytenus imbricata</em> (Celastraceae): an ecological approach
Published
2017-12-19
How to Cite
Ribeiro-de Souza, S., Trindade, I. C., Mercadante-Simões, M. O., Pains-Duarte, L., Silva, G. D. de F., Messias, M. C. T. B., Santos, A. C. dos, & Vieira-Filho, S. A. (2017). Leaf morphoanatomy of the medicinal <em>Maytenus imbricata</em&gt; (Celastraceae): an ecological approach. Botanical Sciences, 95(4), 822-829. https://doi.org/10.17129/botsci.894
Section
STRUCTURAL BOTANY / BOTÁNICA ESTRUCTURAL