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Ammonium enhances resistance to salinity stress in citrus plants
dc.contributor.author | Fernández Crespo, Emma | |
dc.contributor.author | Camañes, Gemma | |
dc.contributor.author | García Agustín, Pilar | |
dc.date.accessioned | 2013-06-12T11:46:31Z | |
dc.date.available | 2013-06-12T11:46:31Z | |
dc.date.issued | 2012 | |
dc.identifier.issn | 0176-1617 | |
dc.identifier.issn | 1618-1328 | |
dc.identifier.uri | http://hdl.handle.net/10234/66997 | |
dc.description.abstract | In this work, we demonstrate that NH4+ nutrition in citrange Carrizo plants acts as an inducer of resistance against salinity conditions. We investigated its mode of action and provide evidence that NH4+ confers resistance by priming abscisic acid and polyamines, and enhances H2O2 and proline basal content. Moreover, we observed reduced Cl− uptake as well as enhanced PHGPx expression after salt stress. Control and N-NH4+ plants showed optimal growth. However, N-NH4+ plants displayed greater dry weight and total lateral roots than control plants, but these differences were not observed for primary root length. Our results revealed that N-NH4+ treatment induces a similar phenotypical response to the recent stress-induced morphogenetic response (SIMRs). The hypothesis is that N-NH4+ treatment triggers mild chronic stress in citrange Carrizo plants, which might explain the SIMR observed. Moreover, we observed modulators of stress signaling, such as H2O2 in N-NH4+ plants, which could acts as an intermediary between stress and the development of the SIMR phenotype. This observation suggests that NH4+ treatments induce a mild stress condition that primes the citrange Carrizo defense response by stress imprinting and confers protection against subsequent salt stress. | ca_CA |
dc.format.extent | 38 p. | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | Elsevier | ca_CA |
dc.relation.isPartOf | Journal of Plant Physiology, 169, 12 | ca_CA |
dc.rights | © 2012 Elsevier GmbH. | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | * |
dc.subject | Ammonium nutrition | ca_CA |
dc.subject | Citrus | ca_CA |
dc.subject | Salinity | ca_CA |
dc.subject | SIMR | ca_CA |
dc.title | Ammonium enhances resistance to salinity stress in citrus plants | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1016/j.jplph.2012.04.011 | |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca_CA |
dc.relation.publisherVersion | http://www.sciencedirect.com/science/article/pii/S0176161712002192 | ca_CA |
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