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Metallomics Vol - 5 Issue - 8

Metallomics Vol - 5 Issue - 7

Metallomics Vol - 5 Issue - 6

Metallomics Vol - 5 Issue - 5

Metallomics Vol - 5 Issue - 4

Metallomics Vol - 5 Issue - 3

Metallomics Vol - 5 Issue - 2

Comparison of global responses to mild deficiency and excess copper levels in Arabidopsis seedlings

Content Provider	Royal Society of Chemistry (RSC)
Author	Perea-García, Ana Rodríguez-Navarro, Susana Garcia-Molina, Antoni Peñarrubia, Lola Andrés, Sonia Mayo de Puig, Sergi Andrés-Colás, Nuria Dorcey, Eavan Pérez-Amador, Miguel A.
Copyright Year	2013
Abstract	Copper is an essential micronutrient in higher plants, but it is toxic in excess. The fine adjustments required to fit copper nutritional demands for optimal growth are illustrated by the diverse, severe symptoms resulting from copper deficiency and excess. Here, a differential transcriptomic analysis was done between Arabidopsis thaliana plants suffering from mild copper deficiency and those with a slight copper excess. The effects on the genes encoding cuproproteins or copper homeostasis factors were included in a CuAt database, which was organised to collect additional information and connections to other databases. The categories overrepresented under copper deficiency and copper excess conditions are discussed. Different members of the categories overrepresented under copper deficiency conditions were both dependent and independent of the general copper deficiency transcriptional regulator SPL7. The putative regulatory elements in the promoter of the copper deficiency overrepresented genes, particularly of the iron superoxide dismutase gene FSD1, were also analysed. A 65 base pair promoter fragment, with at least three GTAC sequences, was found to be not only characteristic of them all, but was responsible for most of the FSD1 copper-dependent regulations. Moreover, a new molecular marker for the slight excess copper nutritional status is proposed. Taken together, these data further contribute to characterise copper nutritional responses in higher plants.
Starting Page	1234
Ending Page	1246
Page Count	13
File Format	HTM / HTML PDF
ISSN	17565901
Volume Number	5
Issue Number	9
Journal	Metallomics
DOI	10.1039/c3mt00025g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Micronutrient Arabidopsis thaliana Gene Genetic marker Homeostasis Superoxide dismutase Copper Base pair
Content Type	Text
Resource Type	Article
Subject	Chemistry Medicine Metals and Alloys Biochemistry Biomaterials Biophysics

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