Cell proliferation and plant development under novel altered gravity environments

23 p.-1 tab.-2 fig.

Bibliographic Details
Authors: Herranz, Raúl, Medina, F. Javier
Format: article
Publication Date:2013
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/99884
Online Access:http://hdl.handle.net/10261/99884
Access Level:Open access
Keyword:Cell proliferation
Graviresistance
Gravitropism
Cell cycle
Cell cultures in vitro
Root meristem
Gene expression
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spelling Cell proliferation and plant development under novel altered gravity environmentsHerranz, RaúlMedina, F. JavierCell proliferationGraviresistanceGravitropismCell cycleCell cultures in vitroRoot meristemGene expression23 p.-1 tab.-2 fig.Gravity is a key factor for life on Earth. It is the only environmental factor that has remained constant throughout evolution, and plants use it to modulate important physiological activities; gravity removal or alteration produces substantial changes in essential functions. For root gravitropism, gravity is sensed in specialised cells, which are capable of detecting magnitudes of the g vector lower than 10-3. Then, the mechanosignal is transduced to upper zones of the root, resulting in changes in the lateral distribution of auxin and in the rate of auxin polar transport. Gravity alteration has consequences for cell growth and proliferation rates in root meristems, which are the basis of the developmental programme of a plant, in which regulation via auxin is involved. The effect is disruption of meristematic competence, i.e. the strict coordination between cell proliferation and growth, which characterises meristematic cells. This effect can be related to changes in the transport and distribution of auxin throughout the root. However, similar effects of gravity alteration have been found in plant cell cultures in vitro, in which neither specialised structures for gravity sensing and signal transduction, nor apparent gravitropism have been described. We postulate that gravity resistance, a general mechanism of cellular origin for developing rigid structures in plants capable of resisting the gravity force, could also be responsible for the changes in cell growth and proliferation parameters detected in non-specialised cells. The mechanisms of gravitropism and graviresistance are complementary, the first being mostly sensitive to the direction of the gravity vector, and the second to its magnitude. At a global molecular level, the consequence of gravity alteration is that the genome should be finely tuned to counteract a type of stress that plants have never encountered before throughout evolution. Multigene families and redundant genes present an advantage in that they can experience changes without the risk of being deleterious and, for this reason, they should play a key role in the response to gravitational stress. © 2013 German Botanical Society and The Royal Botanical Society of the Netherlands.Work performed in the authors’ laboratory was supported through the Plan Nacional de I+D+i of the Spanish Government (grant Nos. AYA2009-07952 and AYA2010-11834-E).Peer ReviewedJohn Wiley & Sons2014201420132014info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/99884reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1111/plb.12103info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/998842026-05-22T06:33:51Z
dc.title.none.fl_str_mv Cell proliferation and plant development under novel altered gravity environments
title Cell proliferation and plant development under novel altered gravity environments
spellingShingle Cell proliferation and plant development under novel altered gravity environments
Herranz, Raúl
Cell proliferation
Graviresistance
Gravitropism
Cell cycle
Cell cultures in vitro
Root meristem
Gene expression
title_short Cell proliferation and plant development under novel altered gravity environments
title_full Cell proliferation and plant development under novel altered gravity environments
title_fullStr Cell proliferation and plant development under novel altered gravity environments
title_full_unstemmed Cell proliferation and plant development under novel altered gravity environments
title_sort Cell proliferation and plant development under novel altered gravity environments
dc.creator.none.fl_str_mv Herranz, Raúl
Medina, F. Javier
author Herranz, Raúl
author_facet Herranz, Raúl
Medina, F. Javier
author_role author
author2 Medina, F. Javier
author2_role author
dc.subject.none.fl_str_mv Cell proliferation
Graviresistance
Gravitropism
Cell cycle
Cell cultures in vitro
Root meristem
Gene expression
topic Cell proliferation
Graviresistance
Gravitropism
Cell cycle
Cell cultures in vitro
Root meristem
Gene expression
description 23 p.-1 tab.-2 fig.
publishDate 2013
dc.date.none.fl_str_mv 2013
2014
2014
2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/99884
url http://hdl.handle.net/10261/99884
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1111/plb.12103
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv John Wiley & Sons
publisher.none.fl_str_mv John Wiley & Sons
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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