Effects of combined or single exogenous auxin and/or cytokinin applications on growth and leaf area development in Epipremnum aureum

Autores
Di Benedetto, Adalberto; Galmarini, Claudio Romulo; Tognetti, Jorge
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We have analysed the effects of combined auxin and cytokinin treatments on whole plant growth and leaf development in Epipremnum aureum and compared both morphological and physiological variables to those obtained with a single hormone application. Rooted cuttings of E. aureum were sprayed with 0, 5, 50, or 100 mg I−1 indole-3- acetic acid (IAA) 7 d after transplanting. One week later, they were then sprayed with 0, 5, 50, or 100 mg I−1 benzylaminopurine (BAP). Whole plant growth, leaf development, carbon fixation, and leaf anatomy were recorded for 6 months after these sequential treatments. Following a single application of IAA or BAP, we observed an increase in the accumulation of whole-plant biomass, which reached a plateau at the highest concentration of either plant hormone. The promotion of growth was associated with increased rates of net C-assimilation and net photosynthesis, as well as with increased leaf thickness and the relative proportion of intracellular spaces in the mesophyll layer. The effect on leaves of applying both hormones, in different combinations and concentrations, resembled the results on whole plants obtained by spraying either the auxin or the cytokinin (at 50 or 100 mg I−1 BAP). Similarities in plant and leaf responses to the auxin and/or the cytokinin suggest that both hormones may act via the same pathway, which agreed with the well-known promotional effect of auxins on the development of new lateral roots, as root apices are the main site of cytokinin biosynthesis. Conversely, our results did not support the occurrence of a significant auxin-driven inhibition of cytokinin synthesis in root apices, at least for E. aureum, as reported in other species.
EEA La Consulta
Fil: Di Benedetto, Adalberto. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fil: Galmarini, Claudio Romulo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Consulta; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias; Argentina
Fil: Tognetti, Jorge. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires; Argentina
Fuente
Journal of horticultural science and biotechnology 90 (6) : 643-654. (2015)
Materia
Epipremnum
Auxinas
Citoquininas
Sustancias de Crecimiento Vegetal
Superficie Foliar
Auxins
Cytokinins
Plant Growth Substances
Leaf Area
Epipremnum aureum
Nivel de accesibilidad
acceso restringido
Condiciones de uso
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/2469
Acceder
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oai_identifier_str oai:localhost:20.500.12123/2469
network_acronym_str INTADig
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network_name_str INTA Digital (INTA)
spelling Effects of combined or single exogenous auxin and/or cytokinin applications on growth and leaf area development in Epipremnum aureumDi Benedetto, AdalbertoGalmarini, Claudio RomuloTognetti, JorgeEpipremnumAuxinasCitoquininasSustancias de Crecimiento VegetalSuperficie FoliarAuxinsCytokininsPlant Growth SubstancesLeaf AreaEpipremnum aureumWe have analysed the effects of combined auxin and cytokinin treatments on whole plant growth and leaf development in Epipremnum aureum and compared both morphological and physiological variables to those obtained with a single hormone application. Rooted cuttings of E. aureum were sprayed with 0, 5, 50, or 100 mg I−1 indole-3- acetic acid (IAA) 7 d after transplanting. One week later, they were then sprayed with 0, 5, 50, or 100 mg I−1 benzylaminopurine (BAP). Whole plant growth, leaf development, carbon fixation, and leaf anatomy were recorded for 6 months after these sequential treatments. Following a single application of IAA or BAP, we observed an increase in the accumulation of whole-plant biomass, which reached a plateau at the highest concentration of either plant hormone. The promotion of growth was associated with increased rates of net C-assimilation and net photosynthesis, as well as with increased leaf thickness and the relative proportion of intracellular spaces in the mesophyll layer. The effect on leaves of applying both hormones, in different combinations and concentrations, resembled the results on whole plants obtained by spraying either the auxin or the cytokinin (at 50 or 100 mg I−1 BAP). Similarities in plant and leaf responses to the auxin and/or the cytokinin suggest that both hormones may act via the same pathway, which agreed with the well-known promotional effect of auxins on the development of new lateral roots, as root apices are the main site of cytokinin biosynthesis. Conversely, our results did not support the occurrence of a significant auxin-driven inhibition of cytokinin synthesis in root apices, at least for E. aureum, as reported in other species.EEA La ConsultaFil: Di Benedetto, Adalberto. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; ArgentinaFil: Galmarini, Claudio Romulo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Consulta; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias; ArgentinaFil: Tognetti, Jorge. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires; Argentina2018-05-23T16:02:48Z2018-05-23T16:02:48Z2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://www.tandfonline.com/doi/abs/10.1080/14620316.2015.11668727http://hdl.handle.net/20.500.12123/24691462-03162380-4084https://doi.org/10.1080/14620316.2015.11668727Journal of horticultural science and biotechnology 90 (6) : 643-654. (2015)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccess2025-09-04T09:47:18Zoai:localhost:20.500.12123/2469instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-09-04 09:47:19.134INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Effects of combined or single exogenous auxin and/or cytokinin applications on growth and leaf area development in Epipremnum aureum
title Effects of combined or single exogenous auxin and/or cytokinin applications on growth and leaf area development in Epipremnum aureum
spellingShingle Effects of combined or single exogenous auxin and/or cytokinin applications on growth and leaf area development in Epipremnum aureum
Di Benedetto, Adalberto
Epipremnum
Auxinas
Citoquininas
Sustancias de Crecimiento Vegetal
Superficie Foliar
Auxins
Cytokinins
Plant Growth Substances
Leaf Area
Epipremnum aureum
title_short Effects of combined or single exogenous auxin and/or cytokinin applications on growth and leaf area development in Epipremnum aureum
title_full Effects of combined or single exogenous auxin and/or cytokinin applications on growth and leaf area development in Epipremnum aureum
title_fullStr Effects of combined or single exogenous auxin and/or cytokinin applications on growth and leaf area development in Epipremnum aureum
title_full_unstemmed Effects of combined or single exogenous auxin and/or cytokinin applications on growth and leaf area development in Epipremnum aureum
title_sort Effects of combined or single exogenous auxin and/or cytokinin applications on growth and leaf area development in Epipremnum aureum
dc.creator.none.fl_str_mv Di Benedetto, Adalberto
Galmarini, Claudio Romulo
Tognetti, Jorge
author Di Benedetto, Adalberto
author_facet Di Benedetto, Adalberto
Galmarini, Claudio Romulo
Tognetti, Jorge
author_role author
author2 Galmarini, Claudio Romulo
Tognetti, Jorge
author2_role author
author
dc.subject.none.fl_str_mv Epipremnum
Auxinas
Citoquininas
Sustancias de Crecimiento Vegetal
Superficie Foliar
Auxins
Cytokinins
Plant Growth Substances
Leaf Area
Epipremnum aureum
topic Epipremnum
Auxinas
Citoquininas
Sustancias de Crecimiento Vegetal
Superficie Foliar
Auxins
Cytokinins
Plant Growth Substances
Leaf Area
Epipremnum aureum
dc.description.none.fl_txt_mv We have analysed the effects of combined auxin and cytokinin treatments on whole plant growth and leaf development in Epipremnum aureum and compared both morphological and physiological variables to those obtained with a single hormone application. Rooted cuttings of E. aureum were sprayed with 0, 5, 50, or 100 mg I−1 indole-3- acetic acid (IAA) 7 d after transplanting. One week later, they were then sprayed with 0, 5, 50, or 100 mg I−1 benzylaminopurine (BAP). Whole plant growth, leaf development, carbon fixation, and leaf anatomy were recorded for 6 months after these sequential treatments. Following a single application of IAA or BAP, we observed an increase in the accumulation of whole-plant biomass, which reached a plateau at the highest concentration of either plant hormone. The promotion of growth was associated with increased rates of net C-assimilation and net photosynthesis, as well as with increased leaf thickness and the relative proportion of intracellular spaces in the mesophyll layer. The effect on leaves of applying both hormones, in different combinations and concentrations, resembled the results on whole plants obtained by spraying either the auxin or the cytokinin (at 50 or 100 mg I−1 BAP). Similarities in plant and leaf responses to the auxin and/or the cytokinin suggest that both hormones may act via the same pathway, which agreed with the well-known promotional effect of auxins on the development of new lateral roots, as root apices are the main site of cytokinin biosynthesis. Conversely, our results did not support the occurrence of a significant auxin-driven inhibition of cytokinin synthesis in root apices, at least for E. aureum, as reported in other species.
EEA La Consulta
Fil: Di Benedetto, Adalberto. Universidad de Buenos Aires. Facultad de Agronomía; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fil: Galmarini, Claudio Romulo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Consulta; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias; Argentina
Fil: Tognetti, Jorge. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires; Argentina
description We have analysed the effects of combined auxin and cytokinin treatments on whole plant growth and leaf development in Epipremnum aureum and compared both morphological and physiological variables to those obtained with a single hormone application. Rooted cuttings of E. aureum were sprayed with 0, 5, 50, or 100 mg I−1 indole-3- acetic acid (IAA) 7 d after transplanting. One week later, they were then sprayed with 0, 5, 50, or 100 mg I−1 benzylaminopurine (BAP). Whole plant growth, leaf development, carbon fixation, and leaf anatomy were recorded for 6 months after these sequential treatments. Following a single application of IAA or BAP, we observed an increase in the accumulation of whole-plant biomass, which reached a plateau at the highest concentration of either plant hormone. The promotion of growth was associated with increased rates of net C-assimilation and net photosynthesis, as well as with increased leaf thickness and the relative proportion of intracellular spaces in the mesophyll layer. The effect on leaves of applying both hormones, in different combinations and concentrations, resembled the results on whole plants obtained by spraying either the auxin or the cytokinin (at 50 or 100 mg I−1 BAP). Similarities in plant and leaf responses to the auxin and/or the cytokinin suggest that both hormones may act via the same pathway, which agreed with the well-known promotional effect of auxins on the development of new lateral roots, as root apices are the main site of cytokinin biosynthesis. Conversely, our results did not support the occurrence of a significant auxin-driven inhibition of cytokinin synthesis in root apices, at least for E. aureum, as reported in other species.
publishDate 2015
dc.date.none.fl_str_mv 2015
2018-05-23T16:02:48Z
2018-05-23T16:02:48Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://www.tandfonline.com/doi/abs/10.1080/14620316.2015.11668727
http://hdl.handle.net/20.500.12123/2469
1462-0316
2380-4084
https://doi.org/10.1080/14620316.2015.11668727
url https://www.tandfonline.com/doi/abs/10.1080/14620316.2015.11668727
http://hdl.handle.net/20.500.12123/2469
https://doi.org/10.1080/14620316.2015.11668727
identifier_str_mv 1462-0316
2380-4084
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
eu_rights_str_mv restrictedAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Journal of horticultural science and biotechnology 90 (6) : 643-654. (2015)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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