Comparative analysis of the effects of homocastasterone and two derivatives on shoot and main root elongation of tomato plantlets

Autores
Pereira Netto, Adaucto B.; Ramirez, Javier Alberto; Galagovsky, Lydia Raquel
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Brassinosteroids (BRs) comprise a specific class of low-abundance plant steroids of ubiquitous occurrence in plants. Molecular genetic analysis of mutants defective in BRs biosynthesis or response has demonstrated that the ability to synthesize, perceive and respond to BRs is critical for normal plant growth. In this work, the structure-activity relationships of two synthetic derivatives of 28-homocastasterone (28-HCS) were evaluated on tomato plantlets using the native 28-HCS and epibrassinolide (epi-BL) as control. Progressive enhancement in the main root elongation was found for plantlets treated with increased doses of 5α-fluoro-28-homocastasterone (5F-HCS) within the 0.5–4 μg shoot−1 range. When compared to epi-BL, to the parental 28-HCS and to a mono 5-hydroxy HCS derivative (5OH-HCS), no difference between 5F-HCS and the other BRs, towards stimulation of main root elongation, was found when these BRs were applied at a dose of 2.0 μg per plantlet. Both, 5F-HCS and 5OH-HCS significantly enhanced shoot elongation, though significantly less than HCS and epi-BL did. Besides provinding an insight into the morphological responses of tomato plantlets to application of 28-HCS derivatives, these results also demonstrate that the 5F-HCS-induced stimulation of main root elongation might be useful to improve the plants's nutrient and especially water uptake, particularly under water deficit, besides improving anchorage.
Fil: Pereira Netto, Adaucto B.. Universidade Federal Do Parana; Brasil
Fil: Ramirez, Javier Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad de Microanálisis y Métodos Físicos en Química Orgánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Unidad de Microanálisis y Métodos Físicos en Química Orgánica; Argentina
Fil: Galagovsky, Lydia Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad de Microanálisis y Métodos Físicos en Química Orgánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Unidad de Microanálisis y Métodos Físicos en Química Orgánica; Argentina
Materia
28-Homocastasterone
Brassinosteroids
Lycopersicum Esculentum
Rooting
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/18663
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/18663
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Comparative analysis of the effects of homocastasterone and two derivatives on shoot and main root elongation of tomato plantletsPereira Netto, Adaucto B.Ramirez, Javier AlbertoGalagovsky, Lydia Raquel28-HomocastasteroneBrassinosteroidsLycopersicum EsculentumRootinghttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Brassinosteroids (BRs) comprise a specific class of low-abundance plant steroids of ubiquitous occurrence in plants. Molecular genetic analysis of mutants defective in BRs biosynthesis or response has demonstrated that the ability to synthesize, perceive and respond to BRs is critical for normal plant growth. In this work, the structure-activity relationships of two synthetic derivatives of 28-homocastasterone (28-HCS) were evaluated on tomato plantlets using the native 28-HCS and epibrassinolide (epi-BL) as control. Progressive enhancement in the main root elongation was found for plantlets treated with increased doses of 5α-fluoro-28-homocastasterone (5F-HCS) within the 0.5–4 μg shoot−1 range. When compared to epi-BL, to the parental 28-HCS and to a mono 5-hydroxy HCS derivative (5OH-HCS), no difference between 5F-HCS and the other BRs, towards stimulation of main root elongation, was found when these BRs were applied at a dose of 2.0 μg per plantlet. Both, 5F-HCS and 5OH-HCS significantly enhanced shoot elongation, though significantly less than HCS and epi-BL did. Besides provinding an insight into the morphological responses of tomato plantlets to application of 28-HCS derivatives, these results also demonstrate that the 5F-HCS-induced stimulation of main root elongation might be useful to improve the plants's nutrient and especially water uptake, particularly under water deficit, besides improving anchorage.Fil: Pereira Netto, Adaucto B.. Universidade Federal Do Parana; BrasilFil: Ramirez, Javier Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad de Microanálisis y Métodos Físicos en Química Orgánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Unidad de Microanálisis y Métodos Físicos en Química Orgánica; ArgentinaFil: Galagovsky, Lydia Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad de Microanálisis y Métodos Físicos en Química Orgánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Unidad de Microanálisis y Métodos Físicos en Química Orgánica; ArgentinaElsevier Science2015-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/18663Pereira Netto, Adaucto B.; Ramirez, Javier Alberto; Galagovsky, Lydia Raquel; Comparative analysis of the effects of homocastasterone and two derivatives on shoot and main root elongation of tomato plantlets; Elsevier Science; Scientia Horticulturae; 181; 1-2015; 13-170304-4238CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.scienta.2014.10.048info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0304423814005974info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:40:15Zoai:ri.conicet.gov.ar:11336/18663instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:40:15.861CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Comparative analysis of the effects of homocastasterone and two derivatives on shoot and main root elongation of tomato plantlets
title Comparative analysis of the effects of homocastasterone and two derivatives on shoot and main root elongation of tomato plantlets
spellingShingle Comparative analysis of the effects of homocastasterone and two derivatives on shoot and main root elongation of tomato plantlets
Pereira Netto, Adaucto B.
28-Homocastasterone
Brassinosteroids
Lycopersicum Esculentum
Rooting
title_short Comparative analysis of the effects of homocastasterone and two derivatives on shoot and main root elongation of tomato plantlets
title_full Comparative analysis of the effects of homocastasterone and two derivatives on shoot and main root elongation of tomato plantlets
title_fullStr Comparative analysis of the effects of homocastasterone and two derivatives on shoot and main root elongation of tomato plantlets
title_full_unstemmed Comparative analysis of the effects of homocastasterone and two derivatives on shoot and main root elongation of tomato plantlets
title_sort Comparative analysis of the effects of homocastasterone and two derivatives on shoot and main root elongation of tomato plantlets
dc.creator.none.fl_str_mv Pereira Netto, Adaucto B.
Ramirez, Javier Alberto
Galagovsky, Lydia Raquel
author Pereira Netto, Adaucto B.
author_facet Pereira Netto, Adaucto B.
Ramirez, Javier Alberto
Galagovsky, Lydia Raquel
author_role author
author2 Ramirez, Javier Alberto
Galagovsky, Lydia Raquel
author2_role author
author
dc.subject.none.fl_str_mv 28-Homocastasterone
Brassinosteroids
Lycopersicum Esculentum
Rooting
topic 28-Homocastasterone
Brassinosteroids
Lycopersicum Esculentum
Rooting
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Brassinosteroids (BRs) comprise a specific class of low-abundance plant steroids of ubiquitous occurrence in plants. Molecular genetic analysis of mutants defective in BRs biosynthesis or response has demonstrated that the ability to synthesize, perceive and respond to BRs is critical for normal plant growth. In this work, the structure-activity relationships of two synthetic derivatives of 28-homocastasterone (28-HCS) were evaluated on tomato plantlets using the native 28-HCS and epibrassinolide (epi-BL) as control. Progressive enhancement in the main root elongation was found for plantlets treated with increased doses of 5α-fluoro-28-homocastasterone (5F-HCS) within the 0.5–4 μg shoot−1 range. When compared to epi-BL, to the parental 28-HCS and to a mono 5-hydroxy HCS derivative (5OH-HCS), no difference between 5F-HCS and the other BRs, towards stimulation of main root elongation, was found when these BRs were applied at a dose of 2.0 μg per plantlet. Both, 5F-HCS and 5OH-HCS significantly enhanced shoot elongation, though significantly less than HCS and epi-BL did. Besides provinding an insight into the morphological responses of tomato plantlets to application of 28-HCS derivatives, these results also demonstrate that the 5F-HCS-induced stimulation of main root elongation might be useful to improve the plants's nutrient and especially water uptake, particularly under water deficit, besides improving anchorage.
Fil: Pereira Netto, Adaucto B.. Universidade Federal Do Parana; Brasil
Fil: Ramirez, Javier Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad de Microanálisis y Métodos Físicos en Química Orgánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Unidad de Microanálisis y Métodos Físicos en Química Orgánica; Argentina
Fil: Galagovsky, Lydia Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad de Microanálisis y Métodos Físicos en Química Orgánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Unidad de Microanálisis y Métodos Físicos en Química Orgánica; Argentina
description Brassinosteroids (BRs) comprise a specific class of low-abundance plant steroids of ubiquitous occurrence in plants. Molecular genetic analysis of mutants defective in BRs biosynthesis or response has demonstrated that the ability to synthesize, perceive and respond to BRs is critical for normal plant growth. In this work, the structure-activity relationships of two synthetic derivatives of 28-homocastasterone (28-HCS) were evaluated on tomato plantlets using the native 28-HCS and epibrassinolide (epi-BL) as control. Progressive enhancement in the main root elongation was found for plantlets treated with increased doses of 5α-fluoro-28-homocastasterone (5F-HCS) within the 0.5–4 μg shoot−1 range. When compared to epi-BL, to the parental 28-HCS and to a mono 5-hydroxy HCS derivative (5OH-HCS), no difference between 5F-HCS and the other BRs, towards stimulation of main root elongation, was found when these BRs were applied at a dose of 2.0 μg per plantlet. Both, 5F-HCS and 5OH-HCS significantly enhanced shoot elongation, though significantly less than HCS and epi-BL did. Besides provinding an insight into the morphological responses of tomato plantlets to application of 28-HCS derivatives, these results also demonstrate that the 5F-HCS-induced stimulation of main root elongation might be useful to improve the plants's nutrient and especially water uptake, particularly under water deficit, besides improving anchorage.
publishDate 2015
dc.date.none.fl_str_mv 2015-01
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 http://hdl.handle.net/11336/18663
Pereira Netto, Adaucto B.; Ramirez, Javier Alberto; Galagovsky, Lydia Raquel; Comparative analysis of the effects of homocastasterone and two derivatives on shoot and main root elongation of tomato plantlets; Elsevier Science; Scientia Horticulturae; 181; 1-2015; 13-17
0304-4238
CONICET Digital
CONICET
url http://hdl.handle.net/11336/18663
identifier_str_mv Pereira Netto, Adaucto B.; Ramirez, Javier Alberto; Galagovsky, Lydia Raquel; Comparative analysis of the effects of homocastasterone and two derivatives on shoot and main root elongation of tomato plantlets; Elsevier Science; Scientia Horticulturae; 181; 1-2015; 13-17
0304-4238
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.scienta.2014.10.048
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0304423814005974
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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