Preprint has been published in a journal as an article
DOI of the published article https://doi.org/10.1590/2236-8906-106/2020
Preprint / Version 1

Thickening of aerial roots of Pandanus Parkinson (Pandanaceae) species

##article.authors##

  • Lucas Henrique Santos Barbosa Universidade de São Paulo, Escola Superior de Agricultura “Luiz de Queiroz”, Departamento de Ciências Biológicas, Avenida Pádua Dias, 11, Vila Independência, 13418-900 Piracicaba, SP, Brasil https://orcid.org/0000-0003-2039-3924
  • Marina Cristina Soares Esteves Universidade Federal de Alagoas, Instituto de Ciências Biológicas e da Saúde, Avenida Lourival Melo Mota, s/n, Tabuleiro dos Martins, 57072-900 Maceió, AL, Brasil
  • Graziela Cury-Guapo Universidade Federal de Alagoas, Instituto de Ciências Biológicas e da Saúde, Avenida Lourival Melo Mota, s/n, Tabuleiro dos Martins, 57072-900 Maceió, AL, Brasil https://orcid.org/0000-0002-0248-7786

DOI:

https://doi.org/10.1590/2236-8906-106/2020

Keywords:

endodermis, monocotyledonous, pericycle, plant anatomy

Abstract

Monocotyledon roots and stems are organs that usually do not show secondary growth or thickness. However, it can occur and for the roots, the literature does not provide much information. Species of the genus Pandanus are easily found in urban areas and are characterized by the presence of thickened aerial roots, originating from the stem. To verify how thickening occurs, roots of P. utilis Bory, P. baptisti Hort., P. amaryllifolius Roxb e P. veitchii Hort samples of the roots were collected in urban areas, fixed and processed according to the usual technique for analysis under a light microscope. For all species, thickening occurs in the acropetal direction, through the formation and expansion of spaces of intercellular spaces in the cortex and in the vascular cylinder, meristematic activity of the proendodermis, division and increase in volume of the parenchymatic cells of the cortex and the vascular cylinder and meristematic activity of the pericycle.

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Posted

07/23/2021

Section

Biological Sciences