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Expanding the laticifer knowledge in Cannabaceae: distribution, morphology, origin, and latex composition.
Leme, Flávia Maria; Borella, Pedro Henrique; Marinho, Cristina Ribeiro; Teixeira, Simone Pádua.
Afiliação
  • Leme FM; Programa de Pós-Graduação em Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, R. Monteiro Lobato 255, Campinas, SP, 13083-862, Brazil.
  • Borella PH; Laboratório de Botânica, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Cidade Universitária, Caixa Postal 549, Campo Grande, MS, 79070-900, Brazil.
  • Marinho CR; Departamento de Ciências Farmacêuticas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. do Café, s/n, Ribeirão Preto, SP, 14040-903, Brazil.
  • Teixeira SP; Departamento de Ciências Farmacêuticas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. do Café, s/n, Ribeirão Preto, SP, 14040-903, Brazil.
Protoplasma ; 257(4): 1183-1199, 2020 Jul.
Article em En | MEDLINE | ID: mdl-32212022
Cannabaceae is a known family because of the production of cannabinoids in laticifers and glandular trichomes of Cannabis sativa. Laticifers are latex-secreting structures, which in Cannabaceae were identified only in C. sativa and Humulus lupulus. This study aimed to expand the knowledge of laticifers in Cannabaceae by checking their structural type and distribution, and the main classes of substances in the latex of Celtis pubescens, Pteroceltis tatarinowii, and Trema micrantha. Such information is also updated for C. sativa. Samples of shoot apices, stems, leaves, and flowers were processed for anatomical, histochemical, ultrastructural, and cytochemical analyses. Laticifers are articulated unbranched in all species instead of non-articulated as previously described for the family. They occur in all sampled organs. They are thick-walled, multinucleate, with a large vacuole and a peripheral cytoplasm. The cytoplasm is rich in mitochondria, endoplasmic reticulum, dictyosomes, ribosomes, and plastids containing starch grains and oil drops. Pectinase and cellulase activities were detected in the laticifer wall and vacuole, confirming its articulated origin, described by first time in the family. These enzymes promote the complete dissolution of the laticifer terminal walls. The latex contains proteins, lipids, and polysaccharides in addition to phenolics (C. sativa) and terpenes (C. pubescens, T. micrantha). The presence of laticifers with similar distribution and morphology supports the recent insertion of Celtis, Pteroceltis, and Trema in Cannabaceae. The articulated type of laticifer found in Cannabaceae, Moraceae, and Urticaceae indicates that the separation of these families by having distinct laticifer types should be reviewed.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Folhas de Planta / Cannabaceae / Látex Idioma: En Revista: Protoplasma Assunto da revista: BIOLOGIA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Áustria
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Folhas de Planta / Cannabaceae / Látex Idioma: En Revista: Protoplasma Assunto da revista: BIOLOGIA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Áustria