Substâncias ergásticas foliares de espécies amazônicas de Oenocarpus Mart. (Arecaceae): caracterização histoquímica e ultra-estrutural

Silva, Rolf Junior Ferreira; Potiguara, Raimunda Conceição de Vilhena

doi:10.1590/s0044-59672009000400007

Cited by 11 publications

(11 citation statements)

References 16 publications

(8 reference statements)

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“…The shape of starch grains can be distinguished mainly by the quantity of amylose, since the higher the content of amylose in relation to amylopectin, more spheric are the starch grains (Bewley & Black, 1994). So, due to the spheric shape of the starch grains present in the studied species of Acrocomia, we infer that the quantities of amylose are higher, similar to the report by Silva and Potiguara (2009) who also found spheric starch grains in species of Oenocarpus (Arecaceae). This corroborates Tomlinson (1961) about the lack of morphological diversity of starch grains in Arecaceae, therefore it is not a useful character for taxonomic distinction in this botanical family.…”

Section: Starchsupporting

confidence: 90%

“…Rocha et al (2002), studying species of Hibiscus (Malvaceae) in xeric habitat, and Colonetti (2012), working on a cactus, verified the role of mucilage as storage substance and water retention. Yet, Silva and Potiguara (2009), analyzing the leaf histochemistry of Oenocarpus species (Arecaceae) from Amazonia, attributed the occurrence of mucilage, not to an ecophysiological adaptation, but to a probable characteristic of that palm group. Vol.…”

Section: Total Fatsmentioning

confidence: 99%

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Biometric Characterization of Fruits and Morphoanatomy of the Mesocarp of Acrocomia Species (Arecaceae)

Vianna¹,

Berton²,

Pott³

et al. 2017

IJB

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The genus Acrocomia (Arecaceae) is widely distributed in the Neotropics, without consensus on the number of species. The arboreal species are explored in their native countries. To subsidize better use of the observed variation in fruits of different species for product extraction, taxonomy, conservation and genetic improvement, our objective was to characterize biometrically the fruits and anatomically the mesocarp from natural populations of A. aculeata, A. intumescens and A. totai. We observed different colors of epicarp and mesocarp in A. aculeata and A. totai, while the fruits of A. intumescens were light green or yellowish. The fruits of A. aculeata showed diameter considered large (3.9-4.6 cm) and the highest dry mass (26.3-33.5 g), A. intumescens presented intermediate diameter (3.1-3.9 cm) and mass (11.5-18.8 g), and A. totai had the smallest diameter (2.2-3.0 cm) and mass (4.1-11.4 g). The morphoanatomical analysis of the mesocarp did not distinguish the three species. However, it revealed the presence of useful compounds for human consumption and with economic potential, such as oil in the parenchyma cells, mucilage, starch and phenolic compounds. We concluded that the mesocarp anatomy is not useful for taxonomy, but the biometric variation is, as well as variation within species can be applicable in conservation and genetic improvement.Keywords: biofuel, palm, plant anatomy, plant products, plant taxonomy ResumoO gênero Acrocomia (Arecaceae) é amplamente distribuído no continente americano não havendo consenso sobre o seu número de espécies, sendo as de porte arbóreo comercialmente exploradas nos países onde ocorrem. Com intuito de gerar subsídios para melhor aproveitar a variação observada nos frutos das diferentes espécies para taxonomia, conservação e melhoramento genético das espécies, o objetivo do presente estudo foi caracterizar biometricamente os frutos e anatomicamente o mesocarpo de populações naturais de A. aculeata, A. intumescens e A. totai. Foram observadas diferentes colorações de epicarpo e do mesocarpo em A. aculeata e A. totai, enquanto os frutos de A. intumescens são verde-claros ou amarelados. Os frutos de A. aculeata têm diâmetro considerado grande (3,9-4,6 cm) e de maior massa seca (26,3-33,5 g), A. intumescens apresentou diâmetro e massa intermediários dos seus frutos (3,1-3,9 cm e 11,5-18,8 g, respectivamente). A. totai apresentou os menores diâmetro e massa de frutos (2,2-3,0 cm e 4,1 -11,4 g, respectivamente). A análise morfoanatômica do mesocarpo não diferenciou as espécies do estudo. No entanto, revelou a presença de compostos úteis para consumo humano e potencial econômico dos compostos identificados, como a presença de óleo nas células do parênquima, mucilagem, amido e compostos fenólicos. Conclui-se que a anatomia do mesocarpo não é útil para taxonomia e que variação biométrica entre as espécies pode ser empregada para este fim, assim como a variação dentro das espécies pode ser útil para fins de conservação e melhoramento genético.

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Section: Starchsupporting

confidence: 90%

Section: Total Fatsmentioning

confidence: 99%

Biometric Characterization of Fruits and Morphoanatomy of the Mesocarp of Acrocomia Species (Arecaceae)

Vianna¹,

Berton²,

Pott³

et al. 2017

IJB

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“…In addition to corroborating taxonomic characterization, plant anatomy provides an important contribution to the elucidation of ecological relationships among plants (Silva and Potiguara, 2009). As such, it can be used to clarify the adaptations of tough lovegrass to adverse weather and soil conditions, as well as its rejection by animals.…”

Section: Introductionmentioning

confidence: 99%

The first anatomical and histochemical study of tough lovegrass (Eragrostis plana Nees, Poaceae)

Favaretto¹,

Santos²,

Carneiro³

et al. 2015

Afr. J. Agric. Res.

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Eragrostis plana Nees (Poaceae), known commonly as tough lovegrass, is the most abundant invasive plant found in the rangelands of Southern Brazil. This study is the first to document the anatomical and histochemical features of the leaves and roots of this grass. Five leaf blades and five roots were collected, fixed in formaldehyde, glacial acetic acid, ethanol 70° (FAA 70), sectioned, stained, and photographed under a light microscope. Anatomical analysis of the leaves was supplemented with observations under a scanning electron microscope. Manual cuts were made into fresh material, which was subjected to specific reagents to determine the lipid, phenol, tannin, lignin, alkaloid, and starch presence. The analyses revealed that the leaves are amphistomatic with paracytic stomata, and the epidermis has lignified cells, a Kranz structure, collateral vascular bundles of two sizes, tectors, unicellular and crystalline trichomes. The roots are polyarc with air gaps on the cortical parenchyma, Uthickened endodermal cell walls and a parenchymatic pith with starch storage cells. Leaves and roots contain lipids, phenols, lignins, and alkaloids; starch is only present in the roots. Anatomical and histochemical traits of tough lovegrass suggest that the plant has adapted to survive under biotic and abiotic stress, which enhances its performance in relation to native plants.

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“…Siliceous bodies are commonly found in representative species of Arecaceae (Leite and Scatena 2001, Prychid et al 2004, Passos and Mendonça 2006, Silva and Potiguara 2009 and have been associated with a mechanical protection against the attack of insects and pathogenic agents (Metcalfe 1985, Silva andPotiguara 2009), transpiration reduction (Prychid et al 2004), and prevention of tissue collapse during droughts (Metcalfe andChalk 1983, Metcalfe 1985). They also play a role in the balance of thermal exchanges with the external environment (Adatia andBesford 1986, Silva andPotiguara 2009).…”

mentioning

confidence: 99%

“…They also play a role in the balance of thermal exchanges with the external environment (Adatia andBesford 1986, Silva andPotiguara 2009).…”

mentioning

confidence: 99%

Handicrafts from Jalapão (TO), Brazil, and their relationship to plant anatomy

Eichemberg¹,

Scatena²

2011

The Journal of the Torrey Botanical Society

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Substâncias ergásticas foliares de espécies amazônicas de Oenocarpus Mart. (Arecaceae): caracterização histoquímica e ultra-estrutural

Cited by 11 publications

References 16 publications

Biometric Characterization of Fruits and Morphoanatomy of the Mesocarp of Acrocomia Species (Arecaceae)

Biometric Characterization of Fruits and Morphoanatomy of the Mesocarp of Acrocomia Species (Arecaceae)

The first anatomical and histochemical study of tough lovegrass (Eragrostis plana Nees, Poaceae)

Handicrafts from Jalapão (TO), Brazil, and their relationship to plant anatomy

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