Brassinosteroid-stimulated branch elongation in the marubakaido apple rootstock

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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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Autor principal:	Ramirez, Javier Alberto
Publicado:	2006
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:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09311890_v20_n3_p286_PereiraNetto 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	paper:paper_09311890_v20_n3_p286_PereiraNetto
record_format	dspace
spelling	paper:paper_09311890_v20_n3_p286_PereiraNetto2025-07-30T18:29:05Z Brassinosteroid-stimulated branch elongation in the marubakaido apple rootstock Ramirez, Javier Alberto 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. 2006 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09311890_v20_n3_p286_PereiraNetto 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 Ramirez, Javier Alberto 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.
author	Ramirez, Javier Alberto
author_facet	Ramirez, Javier Alberto
author_sort	Ramirez, Javier Alberto
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
publishDate	2006
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09311890_v20_n3_p286_PereiraNetto http://hdl.handle.net/20.500.12110/paper_09311890_v20_n3_p286_PereiraNetto
work_keys_str_mv	AT ramirezjavieralberto brassinosteroidstimulatedbranchelongationinthemarubakaidoapplerootstock
_version_	1840320980447133696

Brassinosteroid-stimulated branch elongation in the marubakaido apple rootstock

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