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Characterization of Zinc and Cadmium Hyperaccumulation in Three Noccaea (Brassicaceae) Populations from Non-metalliferous Sites in the Eastern Pyrenees

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dc.contributor.author Martos, Soledad
dc.contributor.author Gallego, Berta
dc.contributor.author Sáez, Llorenç
dc.contributor.author López Alvarado, Javier
dc.contributor.author Cabot Bibiloni, Catalina
dc.contributor.author Poschenrieder, Charlotte
dc.date.accessioned 2018-12-05T12:17:27Z
dc.identifier.uri http://hdl.handle.net/11201/148652
dc.description.abstract [eng] The Southern slope of the Pyrenees is the meridional limit for the distribution of several Noccaea populations. However, the systematic description of these populations and their hyperaccumulation mechanisms are not well established. Morphological and genetic analysis (ITS and 3 chloroplast regions) were used to identify Noccaea populations localized on non-metallicolous soils during a survey in the Catalonian Pyrenees. Cd and Zn concentrations were analyzed in soils and plants both sampled in the field and grown hydroponically. The expression of selected metal transporter genes was assessed by quantitative PCR. The populations were identified as Noccaea brachypetala (Jord.) F.K. Mey by conspicuous morphological traits. Principal component analysis provided a clear separation among N. brachypetala, Noccaea caerulescens J. Presl & C. Presl and Noccaea occitanica (Jord.) F.K. Mey., three Noccaea species reported in the Pyrenees. Contrastingly, ITS and cpDNA analyses were unable to clearly differentiate these taxa. Differences in the expression of the metal transporter genes HMA3, HMA4, and MTP1 between N. caerulescens and N. brachypetala, and those amongst the N. brachypetala populations suggest differences in the strategies for handling enhanced Cd and Zn availability. This is the first report demonstrating Cd and Zn hyperaccumulation by N. brachypetala both in the field and in hydroponics. This comprehensive study based on taxonomic, molecular, and physiological data allows both the correct identification of this species and the characterization of population differences in hyperaccumulation and tolerance of Zn and Cd.
dc.format application/pdf
dc.relation.isformatof https://doi.org/10.3389/fpls.2016.00128
dc.relation.ispartof Frontiers In Plant Science, 2016, vol. 7, p. 128
dc.rights , 2016
dc.subject.classification 57 - Biologia
dc.subject.other 57 - Biological sciences in general
dc.title Characterization of Zinc and Cadmium Hyperaccumulation in Three Noccaea (Brassicaceae) Populations from Non-metalliferous Sites in the Eastern Pyrenees
dc.type info:eu-repo/semantics/article
dc.date.updated 2018-12-05T12:17:27Z
dc.date.embargoEndDate info:eu-repo/date/embargoEnd/2075-01-01
dc.embargo 2075-01-01
dc.rights.accessRights info:eu-repo/semantics/embargoedAccess
dc.identifier.doi https://doi.org/10.3389/fpls.2016.00128


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