Brassinosteroid-stimulated branch elongation in the marubakaido apple rootstock

Brassinosteroids (BRs) comprise a specific class of low-abundance plant steroids now recognized as a new class of phytohormones. In this paper, we demonstrate that a fluoro derivative of 28-homocastasterone (5F-HCTS) stimulates branch elongation in in vitro-grown shoots of Malus prunifolia, the maru...

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Autores principales: Pereira-Netto, A.B., Cruz-Silva, C.T.A., Schaefer, S., Ramírez, J.A., Galagovsky, L.R.
Formato: JOUR
Materias:
28-Homocastasterone
5F-HCTS
Ethylene
Malus prunifolia
Carboxylic acids
Hormones
Wood
Brassinosteroids
Homocastasterone
Micropropagation techniques
Rootstock
Plants (botany)
Branches
Brass
Carboxylic Acids
Elongation
Malus
Plants
Embryophyta
Malus x domestica
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09311890_v20_n3_p286_PereiraNetto
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_09311890_v20_n3_p286_PereiraNetto
record_format dspace
spelling todo:paper_09311890_v20_n3_p286_PereiraNetto2023-10-03T15:48:12Z Brassinosteroid-stimulated branch elongation in the marubakaido apple rootstock Pereira-Netto, A.B. Cruz-Silva, C.T.A. Schaefer, S. Ramírez, J.A. Galagovsky, L.R. 28-Homocastasterone 5F-HCTS Ethylene Malus prunifolia Carboxylic acids Ethylene Hormones Wood Brassinosteroids Homocastasterone Malus prunifolia Micropropagation techniques Rootstock Plants (botany) Branches Brass Carboxylic Acids Elongation Malus Plants Wood Embryophyta Malus prunifolia Malus x domestica Brassinosteroids (BRs) comprise a specific class of low-abundance plant steroids now recognized as a new class of phytohormones. In this paper, we demonstrate that a fluoro derivative of 28-homocastasterone (5F-HCTS) stimulates branch elongation in in vitro-grown shoots of Malus prunifolia, the marubakaido apple rootstock. In addition to that, we show that this BR-stimulated branch elongation is paralleled by an increase in ethylene release. However, either the presence of 1-amino-cyclopropane-1-carboxylic acid (ACC), the immediate precursor of ethylene in higher plants, in the culture medium or an ethylene-enriched atmosphere resulted in inhibition of branch elongation, indicating that the stimulation of branch elongation observed for 5F-HCTS-treated shoots in this study was not, at least directly, related to the BR-induced enhancement in ethylene release rate. Besides its positive effect on the marubakaido shoot growth, i.e. branch elongation, the 5F-HCTS-driven enhancement of branch elongation found in this study is potentially useful to improve micropropagation techniques for other plant species as well, especially woody species, in which branch elongation is typically a constraint for efficient micropropagation. © Springer-Verlag 2005. Fil:Ramírez, J.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09311890_v20_n3_p286_PereiraNetto
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic 28-Homocastasterone
5F-HCTS
Ethylene
Malus prunifolia
Carboxylic acids
Ethylene
Hormones
Wood
Brassinosteroids
Homocastasterone
Malus prunifolia
Micropropagation techniques
Rootstock
Plants (botany)
Branches
Brass
Carboxylic Acids
Elongation
Malus
Plants
Wood
Embryophyta
Malus prunifolia
Malus x domestica
spellingShingle 28-Homocastasterone
5F-HCTS
Ethylene
Malus prunifolia
Carboxylic acids
Ethylene
Hormones
Wood
Brassinosteroids
Homocastasterone
Malus prunifolia
Micropropagation techniques
Rootstock
Plants (botany)
Branches
Brass
Carboxylic Acids
Elongation
Malus
Plants
Wood
Embryophyta
Malus prunifolia
Malus x domestica
Pereira-Netto, A.B.
Cruz-Silva, C.T.A.
Schaefer, S.
Ramírez, J.A.
Galagovsky, L.R.
Brassinosteroid-stimulated branch elongation in the marubakaido apple rootstock
topic_facet 28-Homocastasterone
5F-HCTS
Ethylene
Malus prunifolia
Carboxylic acids
Ethylene
Hormones
Wood
Brassinosteroids
Homocastasterone
Malus prunifolia
Micropropagation techniques
Rootstock
Plants (botany)
Branches
Brass
Carboxylic Acids
Elongation
Malus
Plants
Wood
Embryophyta
Malus prunifolia
Malus x domestica
description Brassinosteroids (BRs) comprise a specific class of low-abundance plant steroids now recognized as a new class of phytohormones. In this paper, we demonstrate that a fluoro derivative of 28-homocastasterone (5F-HCTS) stimulates branch elongation in in vitro-grown shoots of Malus prunifolia, the marubakaido apple rootstock. In addition to that, we show that this BR-stimulated branch elongation is paralleled by an increase in ethylene release. However, either the presence of 1-amino-cyclopropane-1-carboxylic acid (ACC), the immediate precursor of ethylene in higher plants, in the culture medium or an ethylene-enriched atmosphere resulted in inhibition of branch elongation, indicating that the stimulation of branch elongation observed for 5F-HCTS-treated shoots in this study was not, at least directly, related to the BR-induced enhancement in ethylene release rate. Besides its positive effect on the marubakaido shoot growth, i.e. branch elongation, the 5F-HCTS-driven enhancement of branch elongation found in this study is potentially useful to improve micropropagation techniques for other plant species as well, especially woody species, in which branch elongation is typically a constraint for efficient micropropagation. © Springer-Verlag 2005.
format JOUR
author Pereira-Netto, A.B.
Cruz-Silva, C.T.A.
Schaefer, S.
Ramírez, J.A.
Galagovsky, L.R.
author_facet Pereira-Netto, A.B.
Cruz-Silva, C.T.A.
Schaefer, S.
Ramírez, J.A.
Galagovsky, L.R.
author_sort Pereira-Netto, A.B.
title Brassinosteroid-stimulated branch elongation in the marubakaido apple rootstock
title_short Brassinosteroid-stimulated branch elongation in the marubakaido apple rootstock
title_full Brassinosteroid-stimulated branch elongation in the marubakaido apple rootstock
title_fullStr Brassinosteroid-stimulated branch elongation in the marubakaido apple rootstock
title_full_unstemmed Brassinosteroid-stimulated branch elongation in the marubakaido apple rootstock
title_sort brassinosteroid-stimulated branch elongation in the marubakaido apple rootstock
url http://hdl.handle.net/20.500.12110/paper_09311890_v20_n3_p286_PereiraNetto
work_keys_str_mv AT pereiranettoab brassinosteroidstimulatedbranchelongationinthemarubakaidoapplerootstock
AT cruzsilvacta brassinosteroidstimulatedbranchelongationinthemarubakaidoapplerootstock
AT schaefers brassinosteroidstimulatedbranchelongationinthemarubakaidoapplerootstock
AT ramirezja brassinosteroidstimulatedbranchelongationinthemarubakaidoapplerootstock
AT galagovskylr brassinosteroidstimulatedbranchelongationinthemarubakaidoapplerootstock
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