Anatomia do lenho de três espécies do gênero Simira Aubl. (Rubiaceae) da Floresta Atlântica no estado do Rio de Janeiro

Callado, Cátia Henriques; Neto, Sebastião José da Silva

doi:10.1590/2175-78602003548303

Cited by 8 publications

(5 citation statements)

References 19 publications

(23 reference statements)

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“…The presence or absence of different types of mineral inclusions in the ray cells is an important parameter for identifying wood and serves as a taxonomic and systematic marker for Rubiaceae anatomy (Jansen et al 2002;Callado & Silva Neto 2003). Raphide crystals are commonly found in the wood of the species of Psychotria and they are typical of Rubioideae (Jansen et al 2001).…”

Section: Discussionmentioning

confidence: 99%

Comparative wood anatomy of species of Psychotria L. (Rubiaceae) in Atlantic Rainforest remnants of Rio de Janeiro State, Brazil

et al. 2015

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Psychotria is the largest Rubiaceae genus and one of the most abundant in the Atlantic Rainforest of Rio de Janeiro State. The present work aims to characterize and compare the wood of nine of these species. The Psychotria wood were characterized by: slightly distinct growth rings; diffuse porosity; solitary vessels or on radial multiples of 2-6 or clusters of 3-5 vessel elements, with terminal and lateral simple perforation plates and vestured and alternate intervessel and vessel-ray pits; septate fiber-tracheids; and rare axial parenchyma. Although, the wood anatomy of the Psychotria may be considered homogeneous, the statistical analyses, based on qualitative and quantitative features, allowed the segregation of the species and indicated the importance of habit (arboreous or shrubby) on the wood anatomy of the species. It is worth mentioning that the sampling was realized in only one studied site (Ilha Grande), which contributed to the conclusion that the wood characteristics are more related to the specificities of each studied taxon than to with environmental variations.

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Section: Discussionmentioning

confidence: 99%

Comparative wood anatomy of species of Psychotria L. (Rubiaceae) in Atlantic Rainforest remnants of Rio de Janeiro State, Brazil

et al. 2015

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“…Although the anatomical characterization of the wood of Rubiaceae is well described in literature (CALLADO & SILVA NETO, 2003;POLLITO & TOMAZELLO FILHO, 2006;CASTELAR, 2014;MARQUES et al, 2015;BALDIN, 2015;CESAR, 2015;BALDIN et al, 2016) and have recognized taxonomic importance in this group (LENS et al, 2000;JANSEN et al, 2001;CALLADO et al, 2001), systematic or ecological work of the wood done with C. alba from Brazilian ecosystems is non-existent.…”

Section: Introductionmentioning

confidence: 99%

Wood functional anatomy of Chiococca alba Hitch. (Rubiaceae) from cerrado

Júnior¹,

Amorim²,

Oliveira³

et al. 2017

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The wood anatomy is able to evidence systematic and ecological aspects associated with the evolution and functionality of the secondary xylem. The present study was carried out using wood of Chiococca alba (Rubiaceae) from cerrado (savannah), to describe its anatomy and to verify if the hydraulic architecture of this species corroborates the theory that postulates the functional tendency that optimizes the transport efficiency associated with safety. The anatomical analysis followed the conventional protocols of wood anatomy. Different indexes of wood hydraulics quantification were calculated, such as solitary vessels index, vessel grouping, conductivity, vessel collapse, theoretical resistance to vessel implosion and mesomorphism. The structural characteristics described for C. alba are in agreement with the general anatomical descriptions for the Rubiaceae family that relate the presence of exclusively solitary vessels and small diameter, simple perforation plates, alternate intervessel pits, apotracheal parenchyma in species with non-septate fibers and narrow and heterogeneous rays. The calculated indexes showed that C. alba is a xerophyte species with great resistance to the collapse of the vessels during the transport of water, little vulnerability to embolism and relative efficiency in the transport when compared to other species of its subfamily (Cinchonoideae) in function of the typical low water availability of the savannah soil.

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“…The comparative leaf anatomy and micromorphology of Simira ), Rondeletia (Kocsis et al 2004), Rudgea (Mantovani & Vieira 1993/97;Leo et al 1997), Rustia (Vieira et al 2001), Coussarea (Tavares & Vieira 1994) and Bathysa (Nascimento et al 1996) have been studied, as well as the wood anatomy of several species of Rubiaceae (Jansen et al 1997, Dessein et al 2001Callado & Silva Neto 2003). In Psychotria, leaf anatomy and micromorphology have been studied.…”

Section: Introductionmentioning

confidence: 99%

Comparative leaf anatomy and micromorphology of Psychotria species (Rubiaceae) from the Atlantic Rainforest

et al. 2011

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RESUMO(Anatomia e micromorfologia comparada da folha de espécies de Psychotria (Rubiaceae) da Floresta Atlân-tica). O gênero Psychotria compreende aproximadamente 2000 espécies, a maioria arbórea distribuídas em florestas tropicais e subtropicais. Dentro de Rubiaceae, o gênero é bem conhecido pelas espécies produtoras de alcalóides bioativos e taxonomia complexa. Os caracteres anatômicos e micromorfológicos de P. hoffmannseggiana, P. carthagenensis, P. deflexa, P. glaziovii, P. leiocarpa, P. racemosa e P. vellosiana foram investigados e descritos. A variação interespecífica foi avaliada, a fim de contribuir para a sistemática do gêwnero. A análise dos componentes principais (PCA) e a análise de agrupamento através das médias não ponderadas de grupos pareados (UPGMA) indicaram quatro grupos baseados na presença e ausência de algumas características estudadas. Mesofilo dorsiventral, folhas hipostomáticas, estômatos paracíticos, organização do sistema vascular do pecíolo e da nervura principal em arco e presença de feixes acessórios são comuns nas espécies examinadas e são características típicas de Rubiaceae. A presença de cristais estilóides e de alcalóides é considerada característica diagnóstica destas espécies de Psychotria. Outras características usadas para a distinção das espécies o gênero são: o contorno do pecíolo, a ornamentação da cutícula e a presença de tricomas. ABSTRACT(Comparative leaf anatomy and micromorphology of Psychotria species (Rubiaceae) from the Atlantic Rainforest). Th e genus Psychotria comprises approximately 2,000 species that are mostly shrubs distributed in forests of the tropics and subtropics. Within the Rubiaceae, Psychotria is well known for its species that produce bioactive alkaloids and for its taxonomic complexity. Th e anatomical and micromorphological characters of the leaves of P. hoff mannseggiana, P. carthagenensis, P. defl exa, P. glaziovii, P. leiocarpa, P. racemosa, and P. vellosiana were investigated and described to understand the interspecifi c variation of these species, which will contribute to the systematics of the genus. Principal component analysis (PCA) and unweighted pair group method analysis (UPGMA) indicated four groups based on the presence or absence of some of the characters studied. Dorsiventral mesophyll, hypostomatic leaves, paracytic stomata, organization of the vascular system of the petiole and midrib in an arc and the presence of accessory bundles are common in the species examined and are typical characteristics of the Rubiaceae. Th e presence of styloid crystals and alkaloids are considered diagnostic characters of Psychotria. Other characteristics used to separate species in the genus are the petiole contour, cuticle ornamentation, and presence of trichomes. Th e results of the UPGMA cluster analyses indicated that there is similarity between Psychotria (subg. Heteropsychotria) and Palicourea species.

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Anatomia do lenho de três espécies do gênero Simira Aubl. (Rubiaceae) da Floresta Atlântica no estado do Rio de Janeiro

Cited by 8 publications

References 19 publications

Comparative wood anatomy of species of Psychotria L. (Rubiaceae) in Atlantic Rainforest remnants of Rio de Janeiro State, Brazil

Comparative wood anatomy of species of Psychotria L. (Rubiaceae) in Atlantic Rainforest remnants of Rio de Janeiro State, Brazil

Wood functional anatomy of Chiococca alba Hitch. (Rubiaceae) from cerrado

Comparative leaf anatomy and micromorphology of Psychotria species (Rubiaceae) from the Atlantic Rainforest

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