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Acta Biológica Colombiana
Article . 2015 . Peer-reviewed
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Acta Biológica Colombiana
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Acta Biológica Colombiana
Article . 2015
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POTENCIAL DE REGENERACIÓN DE Psychotria ipecacuanha (Rubiaceae) A PARTIR DE CAPAS DELGADAS DE CÉLULAS

Authors: Botero Giraldo, Catalina; Urrea Trujillo, Aura Inés; Naranjo Gómez, Esther Julia;

POTENCIAL DE REGENERACIÓN DE Psychotria ipecacuanha (Rubiaceae) A PARTIR DE CAPAS DELGADAS DE CÉLULAS

Abstract

<p>Conociendo las propiedades medicinales de la especie vegetal <em>Psychotria</em> <em>ipecacuanha</em> (Brot.) Stokes, su crítico estado de conservación, así como las dificultades que presenta para la propagación efectiva, el presente estudio tuvo como objetivo evaluar su potencial de propagación por los sistemas de regeneración <em>in vitro</em>, organogénesis y embriogénesis somática. Para este propósito, capas delgadas de células (CDCs) de tallos y de hojas, así como segmentos foliares fueron sometidos a diferentes tratamientos con reguladores de crecimiento y condiciones de luz. Además se estableció el efecto de diferentes longitudes de onda vía diodos emisores de luz (LEDs), sobre la regeneración en estos explantes y nudos provenientes de plantas <em>in vitro</em>. Los resultados obtenidos mostraron que los segmentos de hoja y las CDCs de tallo sembrados en el medio de cultivo MS suplementado con las combinaciones de los reguladores de crecimiento IBA + BAP e IBA + TDZ formaron embriones somáticos y brotes. Los cortes histológicos realizados corroboraron estos dos tipos de origen. Se encontró que bajo la condición lumínica 16/8, se alcanzaron los mejores resultados de inducción de brotes y embriones. En cuanto al efecto de las diferentes longitudes de onda de luz, se encontró que las correspondientes al rojo, verde y blanca, favorecieron el crecimiento y desarrollo de brotes y la inducción de embriones somáticos. El desarrollo de los brotes a partir de los nudos no presentó diferencias estadísticas entre los tratamientos con LEDs, por lo que se recomienda el uso de la luz blanca continua y con fotoperiodo durante el proceso de multiplicación y desarrollo de estos.</p><p><strong>Regeneration Potential of <em>Psychotria Ipecacuanha</em> (Rubiaceae) from Thin Cell Layers </strong></p><p>Knowing the medicinal properties of the plant specie <em>Psychotria ipecacuanha</em> (Brot.) Stokes, its critical condition and the difficulties for its effective propagation, the present study aimed to assess the potential of propagation of <em>P. ipecacuanha</em> by <em>in vitro</em> systems of regeneration, organogenesis and somatic embryogenesis. For this purpose, thin cell layers (TCL) of stems and leaves, as well as leaf segments were subjected to different treatments of plant growth regulators and light conditions. Furthermore, the effect of different wavelengths via light emitting diodes (LED’s), was established for the regeneration in these explants and nodal explants from <em>in vitro</em> plants. The results showed that leaf segments and stem TCL, cultured in MS medium supplemented with the combinations of growth regulators IBA + BAP and IBA + TDZ, formed somatic embryos and shoots. The histological sections supported the two types of source. It was found that the best results in shoot induction and embryos were achieved under the light condition 16/8-h light/dark. Regarding the effect of different wavelengths, it was found that those corresponding to red, green, and white supported the growth and shoot development as well as somatic embryos induction. The shoots development from the nodal explants did not show statistical differences between LEDs treatments, so the use of a continuous white light and photoperiod is recommended during their multiplication and development.</p>

Country
Colombia
Keywords

Plant Somatic Embryogenesis Techniques, embriogénesis somática, 570, Histology, QH301-705.5, Organogenesis, organogenesis, light-emitting diodes, diodos emisores de luz, análisis histológico, 530, histology, Plant regulators, plant growth regulators, Reguladores del crecimiento de las plantas, Biology (General), Técnicas de Embriogénesis Somática de Plantas, Embriogénesis somática, 57 Ciencias de la vida; Biología / Life sciences; biology, Histología, Somatic embryogenesis, somatic embryogenesis, Diodos emisores de luz, Light emitting diodes, reguladores de crecimiento, http://aims.fao.org/aos/agrovoc/c_36911, organogénesis, Organogénesis

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
9
Top 10%
Average
Average
Green
gold