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Arginine decarboxylase expression, polyamines biosynthesis and reactive oxygen species during organogenic nodule formation in hop

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Arginine decarboxylase expression, polyamines biosynthesis and reactive oxygen species during organogenic nodule formation in hop

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dc.contributor.author Fortes, A. es_ES
dc.contributor.author Costa, J. es_ES
dc.contributor.author Santos, F. es_ES
dc.contributor.author Seguí-Simarro, Jose M. es_ES
dc.contributor.author Palme, K. es_ES
dc.contributor.author Altabella, T. es_ES
dc.contributor.author Tiburcio, A.F. es_ES
dc.contributor.author Pais, M.A. es_ES
dc.date.accessioned 2016-04-29T12:03:08Z
dc.date.available 2016-04-29T12:03:08Z
dc.date.issued 2011-02
dc.identifier.issn 1559-2316
dc.identifier.uri http://hdl.handle.net/10251/63172
dc.description.abstract Hop (Humulus lupulus L.) is an economically important plant species used in beer production and as a health-promoting medicine. hop internodes develop upon stress treatments organogenic nodules which can be used for genetic transformation and micropropagation.Polyamines are involved in plant development and stress responses. arginine decarboxylase (aDc; ec 4·1.1·19) is a key enzyme involved in the biosynthesis of putrescine in plants. here we show that aDc protein was increasingly expressed at early stages of hop internode culture (12 h). Protein continued accumulating until organogenic nodule formation after 28 days, decreasing thereafter. The same profile was observed for/ADC transcript suggesting transcriptional regulation of ADC gene expression during morphogenesis. The highest transcript and protein levels observed after 28 days of culture were accompanied by a peak in putrescine levels. Reactive oxygen species accumulate in nodular tissues probably due to stress inherent to in vitro conditions and enhanced polyamine catabolism. conjugated polyamines increased during plantlet regeneration from nodules suggesting their involvement in plantlet formation and/or in the control of free polyamine levels.Immunogold labeling revealed that aDc is located in plastids, nucleus and cytoplasm of nodular cells. In vacuolated cells, aDc immunolabelling in plastids doubled the signal of proplastids in meristematic cells. Location of aDc in different subcellular compartments may indicate its role in metabolic pathways taking place in these compartments.Altogether these data suggest that polyamines play an important role in organogenic nodule formation and represent a progress towards understanding the role played by these growth regulators in plant morphogenesis. © 2011 Landes Bioscience. es_ES
dc.language Inglés es_ES
dc.publisher Taylor & Francis es_ES
dc.relation.ispartof Plant Signaling and Behavior es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Arginine decarboxylase es_ES
dc.subject Humulus lupulus es_ES
dc.subject Morphogenesis es_ES
dc.subject Organogenic nodule es_ES
dc.subject Polyamines es_ES
dc.subject Reactive oxygen species es_ES
dc.subject Carboxylyase es_ES
dc.subject Polyamine es_ES
dc.subject Reactive oxygen metabolite es_ES
dc.subject Article es_ES
dc.subject Cell nucleus es_ES
dc.subject Enzymology es_ES
dc.subject Humulus es_ES
dc.subject Metabolism es_ES
dc.subject Oxidative stress es_ES
dc.subject Physiology es_ES
dc.subject Plastid es_ES
dc.subject Carboxy-Lyases es_ES
dc.subject Plastids es_ES
dc.subject.classification GENETICA es_ES
dc.title Arginine decarboxylase expression, polyamines biosynthesis and reactive oxygen species during organogenic nodule formation in hop es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.4161/psb.6.2.14503
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Biotecnología - Departament de Biotecnologia es_ES
dc.description.bibliographicCitation Fortes, A.; Costa, J.; Santos, F.; Seguí-Simarro, JM.; Palme, K.; Altabella, T.; Tiburcio, A.... (2011). Arginine decarboxylase expression, polyamines biosynthesis and reactive oxygen species during organogenic nodule formation in hop. Plant Signaling and Behavior. 6(2):258-269. doi:10.4161/psb.6.2.14503 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://www.tandfonline.com/doi/abs/10.4161/psb.6.2.14503 es_ES
dc.description.upvformatpinicio 258 es_ES
dc.description.upvformatpfin 269 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 6 es_ES
dc.description.issue 2 es_ES
dc.relation.senia 198304 es_ES
dc.identifier.pmid 21415599 en_EN
dc.identifier.pmcid PMC3121987 en_EN


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