STRUCTURE AND HISTOCHEMISTRY OF THE FLORAL NECTARY OF <i>Bauhinia monandra</i> (FABACEAE)

Vinícius Alves Rodrigues; Carlos André Espolador Leitão

doi:10.15446/abc.v28n1.88610

Publicado

2023-01-05

STRUCTURE AND HISTOCHEMISTRY OF THE FLORAL NECTARY OF Bauhinia monandra (FABACEAE)

Estructura e histoquímica del nectario floral de Bauhinia monandra (Fabaceae)

Estrutura e histoquímica do nectário floral de Bauhinia monandra (Fabaceae)

DOI:

https://doi.org/10.15446/abc.v28n1.88610

Palabras clave:

anatomy, flower, Leguminosae, medicinal plant, secretory structure (en)
anatomía, estructura secretora, flor, Leguminosae, planta medicinal (es)
anatomia, estrutura secretora, flor, Leguminosae, planta medicinal (pt)

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Autores/as

Vinícius Alves Rodrigues Universidad Estatal del Suroeste de Bahía https://orcid.org/0000-0002-5671-7962
Carlos André Espolador Leitão Universidad Estatal del Suroeste de Bahía https://orcid.org/0000-0002-1988-7436

The structure and histochemistry of the floral nectary of Bauhinia monandra Kurz (Fabaceae) were investigated. Besides possessing medicinal properties, this tree is also used in the recovery of degraded areas and urban arborization. Nectaries samples were obtained from newly bloomed flowers. The nectary was located on the tubular hypanthium. This tube was partially coated by a nectary epidermis, whose cells had secretory features such as a relatively large nucleus, a dense cytoplasm, and small vacuoles. Subjacent to the nectary epidermis, there was a nectary parenchyma with eight to fifteen layers of cells which also have secretory features. Both the nectary epidermis and nectary parenchyma possessed starch grains. Subjacent to the nectary parenchyma passed collateral to amphicribral concentric vascular bundles constituted by more phloem than xylem. Although these vascular bundles did not emit terminations directed to the nectary parenchyma, the arrangement of the latter about the former suggests the supply of nectar precursors by the vascularisation. In the basal region of the hypanthium tube occurred modified stomata which were probably the main route of nectar release; and tector trichomes, possibly involved in the nectar retention.

La estructura e histoquímica del nectario floral de Bauhinia monandra Kurz (Fabaceae) fueron investigadas. Además de poseer propiedades medicinales, este árbol también se utiliza en la recuperación de áreas degradadas y en la arborización urbana. Se obtuvieron muestras de nectarios de flores recién abiertas. El nectario se ubicó en el hipanto tubular. Este tubo estaba parcialmente cubierto por una epidermis nectarífera, cuyas células tenían características secretoras, como un núcleo relativamente grande, un citoplasma denso y pequeñas vacuolas. Subyacente a la epidermis nectarífera, había un parénquima nectarífero con ocho a quince capas de células que también tenían características secretoras. Tanto la epidermis nectarífera como el parénquima nectarífero contenían granos de almidón. Subyacente al parénquima nectarífero había haces vasculares colaterales o concéntricos anficribrales constituidos por más floema que xilema. Aunque estos haces vasculares no emitieron terminaciones dirigidas al parénquima nectarífero, la disposición de este último en relación con los primeros sugiere el suministro de precursores de néctar por la vascularización. En la región basal del tubo de hipanto había estomas modificados que probablemente eran la ruta principal de liberación de néctar; y tricomas tectores, posiblemente activos en la retención de néctar.

A estrutura e a histoquímica do nectário floral de Bauhinia monandra Kurz. (Fabaceae) foram investigadas. Além de possuir propriedades medicinais, essa árvore também é utilizada na recuperação de áreas degradadas e na arborização urbana. Foram obtidas amostras do nectário de flores recém-abertas. O nectário ocorre no hipanto tubular. Esse tubo é parcialmente coberto por uma epiderme nectarífera, cujas células possuem características secretoras, como núcleo relativamente grande, citoplasma denso e pequenos vacúolos. Subjacente à epiderme nectarífera, há um parênquima nectarífero com oito a quinze camadas de células que também possuem características secretoras. Tanto a epiderme nectarífera quanto o parênquima nectarífero possuem grãos de amido. Subjacente ao parênquima nectarífero, passam feixes vasculares colaterais ou concêntricos anficrivais, consistindo aparentemente de mais floema que xilema. Embora esses feixes vasculares não emitam terminações direcionadas ao parênquima nectarífero, o arranjo deste em relação aos primeiros sugere o suprimento de precursores de néctar pela vascularização. Na região basal do tubo do hipanto ocorrem estômatos modificados que provavelmente são a principal via de liberação do néctar; e tricomas tetores, possivelmente ativos na retenção do néctar ou na estimulação tátil do aparelho bucal do polinizador.

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APA

Rodrigues, V. A. y Leitão, C. A. E. (2023). STRUCTURE AND HISTOCHEMISTRY OF THE FLORAL NECTARY OF Bauhinia monandra (FABACEAE). Acta Biológica Colombiana, 28(1), 64–74. https://doi.org/10.15446/abc.v28n1.88610

ACM

[1]

Rodrigues, V.A. y Leitão, C.A.E. 2023. STRUCTURE AND HISTOCHEMISTRY OF THE FLORAL NECTARY OF Bauhinia monandra (FABACEAE). Acta Biológica Colombiana. 28, 1 (ene. 2023), 64–74. DOI:https://doi.org/10.15446/abc.v28n1.88610.

ACS

(1)

Rodrigues, V. A.; Leitão, C. A. E. STRUCTURE AND HISTOCHEMISTRY OF THE FLORAL NECTARY OF Bauhinia monandra (FABACEAE). Acta biol. Colomb. 2023, 28, 64-74.

ABNT

RODRIGUES, V. A.; LEITÃO, C. A. E. STRUCTURE AND HISTOCHEMISTRY OF THE FLORAL NECTARY OF Bauhinia monandra (FABACEAE). Acta Biológica Colombiana, [S. l.], v. 28, n. 1, p. 64–74, 2023. DOI: 10.15446/abc.v28n1.88610. Disponível em: https://revistas.unal.edu.co/index.php/actabiol/article/view/88610. Acesso em: 28 mar. 2025.

Chicago

Rodrigues, Vinícius Alves, y Carlos André Espolador Leitão. 2023. «STRUCTURE AND HISTOCHEMISTRY OF THE FLORAL NECTARY OF Bauhinia monandra (FABACEAE)». Acta Biológica Colombiana 28 (1):64-74. https://doi.org/10.15446/abc.v28n1.88610.

Harvard

Rodrigues, V. A. y Leitão, C. A. E. (2023) «STRUCTURE AND HISTOCHEMISTRY OF THE FLORAL NECTARY OF Bauhinia monandra (FABACEAE)», Acta Biológica Colombiana, 28(1), pp. 64–74. doi: 10.15446/abc.v28n1.88610.

IEEE

[1]

V. A. Rodrigues y C. A. E. Leitão, «STRUCTURE AND HISTOCHEMISTRY OF THE FLORAL NECTARY OF Bauhinia monandra (FABACEAE)», Acta biol. Colomb., vol. 28, n.º 1, pp. 64–74, ene. 2023.

MLA

Rodrigues, V. A., y C. A. E. Leitão. «STRUCTURE AND HISTOCHEMISTRY OF THE FLORAL NECTARY OF Bauhinia monandra (FABACEAE)». Acta Biológica Colombiana, vol. 28, n.º 1, enero de 2023, pp. 64-74, doi:10.15446/abc.v28n1.88610.

Turabian

Rodrigues, Vinícius Alves, y Carlos André Espolador Leitão. «STRUCTURE AND HISTOCHEMISTRY OF THE FLORAL NECTARY OF Bauhinia monandra (FABACEAE)». Acta Biológica Colombiana 28, no. 1 (enero 5, 2023): 64–74. Accedido marzo 28, 2025. https://revistas.unal.edu.co/index.php/actabiol/article/view/88610.

Vancouver

1.

Rodrigues VA, Leitão CAE. STRUCTURE AND HISTOCHEMISTRY OF THE FLORAL NECTARY OF Bauhinia monandra (FABACEAE). Acta biol. Colomb. [Internet]. 5 de enero de 2023 [citado 28 de marzo de 2025];28(1):64-7. Disponible en: https://revistas.unal.edu.co/index.php/actabiol/article/view/88610

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2. Andrews V.S. Silva, Steven D. Johnson, Vidal F. Mansano, Louis P. Ronse De Craene, Giseli D. Pedersoli, Juliana V. Paulino. (2024). Puzzling androecium development in Bauhinia galpinii (Fabaceae) facilitates wing pollination by butterflies. Perspectives in Plant Ecology, Evolution and Systematics, 65, p.125832. https://doi.org/10.1016/j.ppees.2024.125832.

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2. Acta Biológica Colombiana permite a los autores archivar, descargar y compartir, la versión final publicada, así como las versiones pre-print y post-print incluyendo un encabezado con la referencia bibliográfica del articulo publicado.

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4. Se permite y recomienda a los autores/as difundir su obra a través de Internet (p. ej.: en archivos institucionales, en su página web o en redes sociales cientificas como Academia, Researchgate; Mendelay) lo cual puede producir intercambios interesantes y aumentar las citas de la obra publicada. (Véase El efecto del acceso abierto).