Alterations in core histone variant ratios during maize root differentiation, callus formation and in response to plant hormone treatment

Although several histone variants have been studied in both animal and plant organisms, little is known about their distribution during processes that involve alterations in chromatin function, such as differentiation, dedifferentiation and hormone treatment. In this study we evaluated the ratio of...

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Autores principales:	ALATZAS,ANASTASIOS, FOUNDOULI,ATHINA
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2009
Materias:	callus culture histone variant plant cell differentiation plant hormone Zea mays
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602009000400006
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spelling	oai:scielo:S0716-976020090004000062010-03-17Alterations in core histone variant ratios during maize root differentiation, callus formation and in response to plant hormone treatmentALATZAS,ANASTASIOSFOUNDOULI,ATHINA callus culture histone variant plant cell differentiation plant hormone Zea mays Although several histone variants have been studied in both animal and plant organisms, little is known about their distribution during processes that involve alterations in chromatin function, such as differentiation, dedifferentiation and hormone treatment. In this study we evaluated the ratio of each histone variant in each of the four core histone classes in the three developmental zones of maize (Zea mays L.) root and in callus cultures derived from them, in order to define possible alterations either during plant cell differentiation or dedifferentiation. We also evaluated core histone variant ratios in the developmental zones of roots treated with auxin and gibberellin in order to examine the effects of exogenously applied plant hormones to histone variant distribution. Finally, immunohistochemical detection was used to identify the root tissues containing modified forms of core histones and correlates them with the physiological status of the plant cells. According to the results presented in this study, histone variant ratios are altered in all the cases examined, i.e. in the developmental zones of maize root, in callus cultures derived from them and in the developmental zones of roots treated either with auxin or gibberellin. We propose that the alterations in linker histone variant ratios are correlated with plant cell differentiation and physiological status in each case.info:eu-repo/semantics/openAccessSociedad de Biología de ChileBiological Research v.42 n.4 20092009-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602009000400006en10.4067/S0716-97602009000400006
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	callus culture histone variant plant cell differentiation plant hormone Zea mays
spellingShingle	callus culture histone variant plant cell differentiation plant hormone Zea mays ALATZAS,ANASTASIOS FOUNDOULI,ATHINA Alterations in core histone variant ratios during maize root differentiation, callus formation and in response to plant hormone treatment
description	Although several histone variants have been studied in both animal and plant organisms, little is known about their distribution during processes that involve alterations in chromatin function, such as differentiation, dedifferentiation and hormone treatment. In this study we evaluated the ratio of each histone variant in each of the four core histone classes in the three developmental zones of maize (Zea mays L.) root and in callus cultures derived from them, in order to define possible alterations either during plant cell differentiation or dedifferentiation. We also evaluated core histone variant ratios in the developmental zones of roots treated with auxin and gibberellin in order to examine the effects of exogenously applied plant hormones to histone variant distribution. Finally, immunohistochemical detection was used to identify the root tissues containing modified forms of core histones and correlates them with the physiological status of the plant cells. According to the results presented in this study, histone variant ratios are altered in all the cases examined, i.e. in the developmental zones of maize root, in callus cultures derived from them and in the developmental zones of roots treated either with auxin or gibberellin. We propose that the alterations in linker histone variant ratios are correlated with plant cell differentiation and physiological status in each case.
author	ALATZAS,ANASTASIOS FOUNDOULI,ATHINA
author_facet	ALATZAS,ANASTASIOS FOUNDOULI,ATHINA
author_sort	ALATZAS,ANASTASIOS
title	Alterations in core histone variant ratios during maize root differentiation, callus formation and in response to plant hormone treatment
title_short	Alterations in core histone variant ratios during maize root differentiation, callus formation and in response to plant hormone treatment
title_full	Alterations in core histone variant ratios during maize root differentiation, callus formation and in response to plant hormone treatment
title_fullStr	Alterations in core histone variant ratios during maize root differentiation, callus formation and in response to plant hormone treatment
title_full_unstemmed	Alterations in core histone variant ratios during maize root differentiation, callus formation and in response to plant hormone treatment
title_sort	alterations in core histone variant ratios during maize root differentiation, callus formation and in response to plant hormone treatment
publisher	Sociedad de Biología de Chile
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602009000400006
work_keys_str_mv	AT alatzasanastasios alterationsincorehistonevariantratiosduringmaizerootdifferentiationcallusformationandinresponsetoplanthormonetreatment AT foundouliathina alterationsincorehistonevariantratiosduringmaizerootdifferentiationcallusformationandinresponsetoplanthormonetreatment
_version_	1718441452362530816

Alterations in core histone variant ratios during maize root differentiation, callus formation and in response to plant hormone treatment

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