Erratum to: Meristematic activity of the endodermis and the pericycle in the primary thickening in monocotyledons. Considerations on the "PTM" [An Acad Bras Cienc 77(2005): 259-274]

Menezes, Nanuza Luíza de; Silva, Delmira C.; Arruda, Rosani do Carmo de Oliveira; Melo-de-Pinna, Gladys Flávia de Albuquerque; Cardoso, Vanessa A.; Castro, Neuza Maria de; Scatena, Vera Lúcia; Scremin-Dias, Edna

doi:10.1590/s0001-37652005000400005

Cited by 2 publications

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“…According to Metcalfe (1971), when fibers completely enclose the vascular bundles in Cyperaceae, they often affect only the outer bundle sheath. In rhizomes and leaves of Cyperus, the endodermis has thinwalled cells and generates similar layers of centrifugally sclerified cells, called "derivatives of meristematic endodermis (DME)" (Menezes et al 2005). Although no In bold: character states exclusive for the taxon.…”

Section: Anatomical Interpretationmentioning

confidence: 99%

Root, rhizome and scape anatomy of Amazonian species of Mapania Aubl. (Mapanioideae, Cyperaceae) and its taxonomic and ecological significance

2019

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Cyperaceae are a cosmopolitan Monocot family comprising about 5,700 species divided into two subfamilies: Cyperoideae and Mapanioideae. Within Mapanioideae, Mapania is the largest genus, with about 90 species. Anatomical studies on Mapanioideae are of great importance but still scarce. Here, the anatomy of roots, rhizomes and scapes of five Amazonian species of Mapania is studied. The species have two types of roots, which differ anatomically: thick roots, serving mainly for fixing, and thin ones, mainly for nutrient absorption. Rhizomes show a uniform anatomical pattern, with amyloplasts and phenolic idioblasts in the cortex and in the vascular cylinder, without aerenchyma. In this organ, the collateral vascular bundles are similar to those found in Hypolytrum, a genus closely related to Mapania within Mapanioideae, suggesting that this feature may be diagnostic for the tribe Hypolytreae. The scape anatomy of the species is taxonomically important at species level but does not corroborate precisely the infrageneric classification of the genus. Finally, the aerenchyma found in roots and scapes is an adaptive character state for a humid forest environment. This work contributes valuable information for the anatomical characterization of vegetative organs of Mapania and discusses its taxonomic and ecological relevance.

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Section: Anatomical Interpretationmentioning

confidence: 99%

Root, rhizome and scape anatomy of Amazonian species of Mapania Aubl. (Mapanioideae, Cyperaceae) and its taxonomic and ecological significance

2019

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Stem and leaf morphoanatomy of two Atlantic Forest species of Smilax Linnaeus

Guimarães¹

2011

Rev. Biol. Neot.

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In this work, we analyze the morphoanatomical characteristics of the stem and leaves of Smilax quinquenervia and Smilax subsessiliflora in order to detect aspects that can help identify these species. Specimens were collected in the municipality of Miguel Pereira, Rio de Janeiro, Brazil, and histological slides were prepared according to traditional techniques of plant anatomy. Some anatomic characteristics are common to both species, including raphide and prismatic crystals of calcium oxalate and the occurrence of a sclerenchymatic sheath in the vascular bundles. Other aspects have diagnostic value for the species analyzed: thorns (vascularized emergences) at the nodes, striated cuticle, and cortical vascular bundles appearing as leaf traces in the aerial stem of S. quinquenervia; cork warts in the leaf and groups of palisade cells in the mesophyll of S. quinquenervia; aculei (non-vascularized emergences) at the nodes and internodes, striated cuticle with micropapillae, and a biseriate epidermis in the aerial stem of S. subsessiliflora; presence of groups of lobate cells in the mesophyll of S. subsessiliflora. A comparative table, which points to these aspects and others referenced in the literature for the Smilax species, is provided. The anatomical studies of the two species analyzed provide the basis for their recognition.

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Erratum to: Meristematic activity of the endodermis and the pericycle in the primary thickening in monocotyledons. Considerations on the "PTM" [An Acad Bras Cienc 77(2005): 259-274]

Cited by 2 publications

References 0 publications

Root, rhizome and scape anatomy of Amazonian species of Mapania Aubl. (Mapanioideae, Cyperaceae) and its taxonomic and ecological significance

Root, rhizome and scape anatomy of Amazonian species of Mapania Aubl. (Mapanioideae, Cyperaceae) and its taxonomic and ecological significance

Stem and leaf morphoanatomy of two Atlantic Forest species of Smilax Linnaeus

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