Exogenous nitrate induces root branching and inhibits primary root growth in Capsicum chinense Jacq.

The effects of nitrate (NO₃⁻) on the root system are complex and depend on several factors, such as the concentration available to the plant, endogenous nitrogen status and the sensitivity of the species. Though these effects have been widely documented on Arabidopsis and cereals, no reports are ava...

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Detalhes bibliográficos
Autor: ILEANA DE LA CARIDAD ECHEVARRIA MACHADO
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2011
País:México
Recursos:Centro de Investigación Científica de Yucatán
Repositorio:Repositorio Institucional CICY
Idioma:inglés
OAI Identifier:oai:cicy.repositorioinstitucional.mx:1003/232
Acesso em linha:http://cicy.repositorioinstitucional.mx/jspui/handle/1003/232
Access Level:acceso abierto
Palavra-chave:info:eu-repo/classification/cti/2
info:eu-repo/classification/cti/23
info:eu-repo/classification/cti/2302
info:eu-repo/classification/cti/230221
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spelling Exogenous nitrate induces root branching and inhibits primary root growth in Capsicum chinense Jacq.ILEANA DE LA CARIDAD ECHEVARRIA MACHADOinfo:eu-repo/classification/cti/2info:eu-repo/classification/cti/23info:eu-repo/classification/cti/2302info:eu-repo/classification/cti/230221info:eu-repo/classification/cti/230221The effects of nitrate (NO₃⁻) on the root system are complex and depend on several factors, such as the concentration available to the plant, endogenous nitrogen status and the sensitivity of the species. Though these effects have been widely documented on Arabidopsis and cereals, no reports are available in the Capsicum genus. In this paper, we have determined the effect of an exogenous in vitro application of this nutrient on root growth in habanero pepper (Capsicum chinense Jacq.). Exposure to NO₃⁻ inhibited primary root growth in both, dose- and time-dependent manners. The highest inhibition was attained with 0.1 mM NO₃⁻ between the fourth and fifth days of treatment. Inhibition of primary root growth was observed by exposing the root to both homogeneous and heterogeneous conditions of the nutrient; in contrast, ammonium was not able to induce similar changes. NO₃⁻-induced inhibition of primary root growth was reversed by treating the roots with IAA or NPA, a polar auxin transport inhibitor. Heterogeneous NO₃⁻ application stimulated the formation and elongation of lateral roots in the segment where the nutrient was present, and this response was influenced by exogenous phytohormones. These results demonstrate that habanero pepper responds to NO₃⁻ in a similar fashion to other species with certain particular differences. Therefore, studies in this model could help to elucidate the mechanisms by which roots respond to NO₃⁻ in fluctuating soil environments.2011-09-26info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://cicy.repositorioinstitucional.mx/jspui/handle/1003/232reponame:Repositorio Institucional CICYinstname:Centro de Investigación Científica de Yucatáninstacron:CICYenginfo:eu-repo/semantics/datasetDOI/10.1016/j.plaphy.2011.09.003info:eu-repo/semantics/altIdentifier/DOI/10.1016/j.plaphy.2011.09.003info:eu-repo/semantics/reference/DOI/10.1016/j.plaphy.2011.09.003info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0oai:cicy.repositorioinstitucional.mx:1003/2322024-08-28T03:18:25Z
dc.title.none.fl_str_mv Exogenous nitrate induces root branching and inhibits primary root growth in Capsicum chinense Jacq.
title Exogenous nitrate induces root branching and inhibits primary root growth in Capsicum chinense Jacq.
spellingShingle Exogenous nitrate induces root branching and inhibits primary root growth in Capsicum chinense Jacq.
ILEANA DE LA CARIDAD ECHEVARRIA MACHADO
info:eu-repo/classification/cti/2
info:eu-repo/classification/cti/23
info:eu-repo/classification/cti/2302
info:eu-repo/classification/cti/230221
info:eu-repo/classification/cti/230221
title_short Exogenous nitrate induces root branching and inhibits primary root growth in Capsicum chinense Jacq.
title_full Exogenous nitrate induces root branching and inhibits primary root growth in Capsicum chinense Jacq.
title_fullStr Exogenous nitrate induces root branching and inhibits primary root growth in Capsicum chinense Jacq.
title_full_unstemmed Exogenous nitrate induces root branching and inhibits primary root growth in Capsicum chinense Jacq.
title_sort Exogenous nitrate induces root branching and inhibits primary root growth in Capsicum chinense Jacq.
dc.creator.none.fl_str_mv ILEANA DE LA CARIDAD ECHEVARRIA MACHADO
author ILEANA DE LA CARIDAD ECHEVARRIA MACHADO
author_facet ILEANA DE LA CARIDAD ECHEVARRIA MACHADO
author_role author
dc.subject.none.fl_str_mv info:eu-repo/classification/cti/2
info:eu-repo/classification/cti/23
info:eu-repo/classification/cti/2302
info:eu-repo/classification/cti/230221
info:eu-repo/classification/cti/230221
topic info:eu-repo/classification/cti/2
info:eu-repo/classification/cti/23
info:eu-repo/classification/cti/2302
info:eu-repo/classification/cti/230221
info:eu-repo/classification/cti/230221
description The effects of nitrate (NO₃⁻) on the root system are complex and depend on several factors, such as the concentration available to the plant, endogenous nitrogen status and the sensitivity of the species. Though these effects have been widely documented on Arabidopsis and cereals, no reports are available in the Capsicum genus. In this paper, we have determined the effect of an exogenous in vitro application of this nutrient on root growth in habanero pepper (Capsicum chinense Jacq.). Exposure to NO₃⁻ inhibited primary root growth in both, dose- and time-dependent manners. The highest inhibition was attained with 0.1 mM NO₃⁻ between the fourth and fifth days of treatment. Inhibition of primary root growth was observed by exposing the root to both homogeneous and heterogeneous conditions of the nutrient; in contrast, ammonium was not able to induce similar changes. NO₃⁻-induced inhibition of primary root growth was reversed by treating the roots with IAA or NPA, a polar auxin transport inhibitor. Heterogeneous NO₃⁻ application stimulated the formation and elongation of lateral roots in the segment where the nutrient was present, and this response was influenced by exogenous phytohormones. These results demonstrate that habanero pepper responds to NO₃⁻ in a similar fashion to other species with certain particular differences. Therefore, studies in this model could help to elucidate the mechanisms by which roots respond to NO₃⁻ in fluctuating soil environments.
publishDate 2011
dc.date.none.fl_str_mv 2011-09-26
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://cicy.repositorioinstitucional.mx/jspui/handle/1003/232
url http://cicy.repositorioinstitucional.mx/jspui/handle/1003/232
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/datasetDOI/10.1016/j.plaphy.2011.09.003
info:eu-repo/semantics/altIdentifier/DOI/10.1016/j.plaphy.2011.09.003
info:eu-repo/semantics/reference/DOI/10.1016/j.plaphy.2011.09.003
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositorio Institucional CICY
instname:Centro de Investigación Científica de Yucatán
instacron:CICY
instname_str Centro de Investigación Científica de Yucatán
instacron_str CICY
institution CICY
reponame_str Repositorio Institucional CICY
collection Repositorio Institucional CICY
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repository.mail.fl_str_mv
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