Gribner C, Barbosa V, Monteiro LM, Swiech JND, Raman V, Manfron J, Miguel OG, Montrucchio DP, de Fátima Gaspari Dias J. Microscopic investigations of Ocotea paranaensis-A Brazilian endemic and endangered species.
Microsc Res Tech 2022;
85:3316-3324. [PMID:
35751588 DOI:
10.1002/jemt.24186]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 05/28/2022] [Accepted: 06/06/2022] [Indexed: 11/06/2022]
Abstract
This article describes the morpho-anatomies of the leaves and stems of Ocotea paranaensis Brotto, Baitello, Cervi & Santos (Lauraceae) using light and scanning electron microscopy. The main anatomical features characterizing the species are the presence of simple non-glandular trichomes in the leaves and stems, large secretory cells in the leaves, flat-convex petioles with two small lateral ribs, brachysclereids in the stem cortex and pith, and the presence of starch grains and various types of calcium oxalate crystals in the pith. Histochemical tests indicated the presence of lignin in stone cells, fibers, and xylem. Lipophilic contents were found in the secretory cells. Phenolic compounds were detected in the epidermis, hypodermis, phloem, and xylem. The present study's findings can contribute to the taxonomy and authentication of O. paranaensis.
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