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Homeostatic control of polyamine levels under long-term salt stress in Arabidopsis

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Homeostatic control of polyamine levels under long-term salt stress in Arabidopsis

dc.contributor.author	Alet, Analía I	es_ES
dc.contributor.author	Sánchez, Diego H	es_ES
dc.contributor.author	Ferrando, Alejandro	es_ES
dc.contributor.author	Tiburcio, Antonio F.	es_ES
dc.contributor.author	Alcazar, Ruben	es_ES
dc.contributor.author	Cuevas, Juan Cruz	es_ES
dc.contributor.author	Altabella, Teresa	es_ES
dc.contributor.author	Marco Picó, Francisco	es_ES
dc.contributor.author	Carrasco Sorli, Pedro M.	es_ES
dc.contributor.author	Menéndez, Ana B	es_ES
dc.contributor.author	Ruiz, Oscar Adolfo	es_ES
dc.date.accessioned	2015-06-22T09:50:05Z
dc.date.available	2015-06-22T09:50:05Z
dc.date.issued	2011	es_ES
dc.identifier.citation	Plant Signaling & Behavior Vol. 6 Issue 2: pp. 237-242	es_ES
dc.identifier.uri	http://hdl.handle.net/10550/44658
dc.description.abstract	Salt stress has been frequently studied in its first osmotic phase. Very often, data regarding the second ionic phase is missing. It has also been suggested that Putrescine or/and Spermine could be responsible for salt resistance. In order to test this hypothesis under long-term salt stress, we obtained Arabidopsis thaliana transgenic plants harboring pRD29A::oatADC or pRD29A::GUS construction. Although Putrescine was the only polyamine significantly increased after salt acclimation in pRD29A::oatADC transgenic lines, this rendered in no advantage to this kind of stress. The higher Spermine levels found in WT and transgenic lines when compared to control conditions along with no increment on Putrescine levels in WT plants under salt acclimation, leads us to analyze Spermine effect on pADC1 and pADC2 expression. Increasing levels of this polyamine inhibits these promoters expression while enhances pRD29A expression, making Spermine the polyamine responsible for salt acclimation, and the transgenic lines developed in this work suitable for studying Putrescine roles in conditions where its biosynthesis would be inhibited in the WT genotype.	es_ES
dc.subject	arginine decarboxilase	es_ES
dc.subject	salt acclimation	es_ES
dc.subject	polyamines	es_ES
dc.subject	putrescine	es_ES
dc.subject	spermine	es_ES
dc.subject	salt overlay sensitive mutants	es_ES
dc.title	Homeostatic control of polyamine levels under long-term salt stress in Arabidopsis	es_ES
dc.type	journal article	es_ES
dc.identifier.doi	10.4161/psb.6.2.14214	es_ES
dc.identifier.idgrec	069509	es_ES