Microscopic investigations of Ocotea paranaensis―A Brazilian endemic and endangered species,Microscopy Research and Technique

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Microscopic investigations of Ocotea paranaensis―A Brazilian endemic and endangered species
Microscopy Research and Technique ( IF 2.0 ) Pub Date : 2022-06-25 , DOI: 10.1002/jemt.24186
Caroline Gribner ₁ , Vanessa Barbosa ₁ , Luciane Mendes Monteiro ₂ , Juliane Nadal Dias Swiech ₁ , Vijayasankar Raman ₃ , Jane Manfron ₂ , Obdulio Gomes Miguel ₁ , Deise Prehs Montrucchio ₁ , Josiane de Fátima Gaspari Dias ₁

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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.

中文翻译：

巴西特有和濒危物种 Ocotea paranaensis 的显微研究

这篇文章描述了Ocotea paranaensis的叶子和茎的形态解剖Brotto, Baitello, Cervi & Santos (Lauraceae) 使用光学和扫描电子显微镜。表征该物种的主要解剖特征是在叶子和茎中存在简单的非腺毛，在叶子中存在大的分泌细胞，带有两个小侧肋的平凸叶柄，茎皮和髓中的短巩膜，以及存在髓中淀粉粒及各类草酸钙结晶。组织化学测试表明在石细胞、纤维和木质部中存在木质素。在分泌细胞中发现了亲脂性成分。在表皮、皮下组织、韧皮部和木质部中检测到酚类化合物。本研究的发现有助于对巴拉那奥氏菌的分类和鉴定。

更新日期：2022-06-25

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