AhNAS2 suppression in Arabidopsis halleri roots
Ontology highlight
ABSTRACT:
ORGANISM(S): Arabidopsis halleri ssp halleri
SUBMITTER: Stephan Clemens
PROVIDER: E-GEOD-31778 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
Publications
Elevated nicotianamine levels in Arabidopsis halleri roots play a key role in zinc hyperaccumulation.
Deinlein Ulrich U Weber Michael M Schmidt Holger H Rensch Stefan S Trampczynska Aleksandra A Hansen Thomas H TH Husted Søren S Schjoerring Jan K JK Talke Ina N IN Krämer Ute U Clemens Stephan S
The Plant cell 20120228 2
Zn deficiency is among the leading health risk factors in developing countries. Breeding of Zn-enriched crops is expected to be facilitated by molecular dissection of plant Zn hyperaccumulation (i.e., the ability of certain plants to accumulate Zn to levels >100-fold higher than normal plants). The model hyperaccumulators Arabidopsis halleri and Noccaea caerulescens share elevated nicotianamine synthase (NAS) expression relative to nonaccumulators among a core of alterations in metal homeostasis ...[more]
Similar Datasets
Project description:The model Zn hyperaccumulators Arabidopsis halleri and Noccaea caerulescens share elevated nicotianamine synthase (NAS) expression relative to non-accumulators among a core of alterations in metal homeostasis gene expression. Suppression of AhNAS2 expression by RNAi resulted in strongly reduced root NA accumulation and a concomitant decrease in root-to-shoot-translocation of Zn but not of other micronutrients. Few secondary effects on the root transcriptome were detected by microarray analysis.
2011-12-31 | GSE31778 | GEO
Project description:This application is from a NERC-funded consortium (Mark MacNair, Nick Smirnoff, Exeter) and (Brian Ford-Lloyd, John Newbury, Birmingham). Metal tolerance is one of the classic examples of micro-evolution. Despite extensive research the physiological bases of the adaptation in plants are largely unknown. Arabidopsis halleri is a zinc tolerant, zinc accumulating species whereas Arabidopsis petraea is non-accumulating and non-tolerant. The objective of our programme is to identify: a) those key genes that act to determine Zn tolerance and accumulation in Arabidopsis (and which account for the difference in performance of A. halleri and A. petraea grown in the presence of elevated Zn), and b) those _downstream_ genes that are expressed as part of the tolerance or accumulation response. Phase 1: Total of 24 chips: Material ready by May 2003. The results will: a) tell us how effectively material derived from other Arabidopsis species hybridises to the chips, and b) identify genes that are differentially expressed in the two species in the presence and absence of Zn stress (thus providing initial lists of genes that may be responsible for Zn tolerance or accumulation- (but see phase 2). A. halleri exposed to low and high Zn; root and leaf mRNAs extracted: 3 replicates of each: = 12 slides. A. petraea exposed to low and high Zn; root and leaf mRNAs extracted: 3 replicates of each: = 12 slides. Phase 2: Total of 48 chips: Material ready by September 2003. The results will tell us which genes, identified as having appropriate expression patterns, co-segregate with the Zn tolerance or accumulation phenotype and will provide firmer candidate genes for intensive study. Bulks will be produced from F3 progeny (from the halleri x petraea cross) following phentoypic analyses for Zn tolerance and accumulation. A bulk of F3 progeny all exhibiting high Zn tolerance: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides. A bulk of F3 progeny all exhibiting low Zn tolerance: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides. A bulk of F3 progeny all exhibiting high Zn accumulation: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides. A bulk of F3 progeny all exhibiting low Zn accumulation: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides.
2022-11-21 | E-NASC-44 | biostudies-arrayexpress
Project description:This application is from a NERC-funded consortium (Mark MacNair, Nick Smirnoff, Exeter) and (Brian Ford-Lloyd, John Newbury, Birmingham). Metal tolerance is one of the classic examples of micro-evolution. Despite extensive research the physiological bases of the adaptation in plants are largely unknown. Arabidopsis halleri is a zinc tolerant, zinc accumulating species whereas Arabidopsis petraea is non-accumulating and non-tolerant. The objective of our programme is to identify a) those key genes that act to determine Zn tolerance and accumulation in Arabidopsis (and which account for the difference in performance of A. halleri and A. petraea grown in the presence of elevated Zn) and b) those _downstream_ genes that are expressed as part of the tolerance or accumulation response. Phase 1: Total of 24 chips: Material ready by May 2003 The results will a) tell us how effectively material derived from other Arabidopsis species hybridises to the chips, and b) identify genes that are differentially expressed in the two species in the presence and absence of Zn stress (thus providing initial lists of genes that may be responsible for Zn tolerance or accumulation- but see phase 2)· A. halleri exposed to low and high Zn; root and leaf mRNAs extracted: 3 replicates of each: = 12 slides· A. petraea exposed to low and high Zn; root and leaf mRNAs extracted: 3 replicates of each: = 12 slides Phase 2: Total of 48 chips: Material ready by September 2003 The results will tell us which genes, identified as having appropriate expression patterns, co-segregate with the Zn tolerance or accumulation phenotype and will provide firmer candidate genes for intensive study. Bulks will be produced from F3 progeny (from the halleri x petraea cross) following phentoypic analyses for Zn tolerance and accumulation.· A bulk of F3 progeny all exhibiting high Zn tolerance: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides· A bulk of F3 progeny all exhibiting low Zn tolerance: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides· A bulk of F3 progeny all exhibiting high Zn accumulation: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides· A bulk of F3 progeny all exhibiting low Zn accumulation: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides Experimenter name = H. John Newbury Experimenter phone = 0121 414 5581 Experimenter fax = 0121 414 5925 Experimenter department = Newbury lab Experimenter institute = University of Birmingham Experimenter address = School of Biosciences Experimenter address = University of Birmingham Experimenter address = Edgbaston Experimenter address = Birmingham Experimenter zip/postal_code = B15 2TT Experimenter country = UK Keywords: stimulus_or_stress_design; organism_part_comparison_design; strain_or_line_design
2007-01-08 | GSE5613 | GEO
Project description:This application is from a NERC-funded consortium (Mark MacNair, Nick Smirnoff, Exeter) and (Brian Ford-Lloyd, John Newbury, Birmingham). Metal tolerance is one of the classic examples of micro-evolution. Despite extensive research the physiological bases of the adaptation in plants are largely unknown. Arabidopsis halleri is a zinc tolerant, zinc accumulating species whereas Arabidopsis petraea is non-accumulating and non-tolerant. The objective of our programme is to identify: a) those key genes that act to determine Zn tolerance and accumulation in Arabidopsis (and which account for the difference in performance of A. halleri and A. petraea grown in the presence of elevated Zn), and b) those _downstream_ genes that are expressed as part of the tolerance or accumulation response. Phase 1: Total of 24 chips: Material ready by May 2003. The results will: a) tell us how effectively material derived from other Arabidopsis species hybridises to the chips, and b) identify genes that are differentially expressed in the two species in the presence and absence of Zn stress (thus providing initial lists of genes that may be responsible for Zn tolerance or accumulation- (but see phase 2). A. halleri exposed to low and high Zn; root and leaf mRNAs extracted: 3 replicates of each: = 12 slides. A. petraea exposed to low and high Zn; root and leaf mRNAs extracted: 3 replicates of each: = 12 slides. Phase 2: Total of 48 chips: Material ready by September 2003. The results will tell us which genes, identified as having appropriate expression patterns, co-segregate with the Zn tolerance or accumulation phenotype and will provide firmer candidate genes for intensive study. Bulks will be produced from F3 progeny (from the halleri x petraea cross) following phentoypic analyses for Zn tolerance and accumulation. A bulk of F3 progeny all exhibiting high Zn tolerance: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides. A bulk of F3 progeny all exhibiting low Zn tolerance: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides. A bulk of F3 progeny all exhibiting high Zn accumulation: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides. A bulk of F3 progeny all exhibiting low Zn accumulation: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides. Experimenter name = H. John Newbury Experimenter phone = 0121 414 5581 Experimenter fax = 0121 414 5925 Experimenter institute = University of Birmingham Experimenter address = School of Biosciences Experimenter address = University of Birmingham Experimenter address = Edgbaston Experimenter address = Birmingham Experimenter zip/postal_code = B15 2TT Experimenter country = UK Keywords: stimulus_or_stress_design; organism_part_comparison_design; strain_or_line_design
2007-01-08 | GSE5738 | GEO
Project description:This application is from a NERC-funded consortium (Mark MacNair, Nick Smirnoff, Exeter) and (Brian Ford-Lloyd, John Newbury, Birmingham). Metal tolerance is one of the classic examples of micro-evolution. Despite extensive research the physiological bases of the adaptation in plants are largely unknown. Arabidopsis halleri is a zinc tolerant, zinc accumulating species whereas Arabidopsis petraea is non-accumulating and non-tolerant. The objective of our programme is to identify:; a) those key genes that act to determine Zn tolerance and accumulation in Arabidopsis (and which account for the difference in performance of A. halleri and A. petraea grown in the presence of elevated Zn), and; b) those _downstream_ genes that are expressed as part of the tolerance or accumulation response. Phase 1: Total of 24 chips: Material ready by May 2003. The results will:; a) tell us how effectively material derived from other Arabidopsis species hybridises to the chips, and; b) identify genes that are differentially expressed in the two species in the presence and absence of Zn stress (thus providing initial lists of genes that may be responsible for Zn tolerance or accumulation- (but see phase 2). A. halleri exposed to low and high Zn; root and leaf mRNAs extracted: 3 replicates of each: = 12 slides. A. petraea exposed to low and high Zn; root and leaf mRNAs extracted: 3 replicates of each: = 12 slides. Phase 2: Total of 48 chips: Material ready by September 2003. The results will tell us which genes, identified as having appropriate expression patterns, co-segregate with the Zn tolerance or accumulation phenotype and will provide firmer candidate genes for intensive study. Bulks will be produced from F3 progeny (from the halleri x petraea cross) following phentoypic analyses for Zn tolerance and accumulation. A bulk of F3 progeny all exhibiting high Zn tolerance: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides. A bulk of F3 progeny all exhibiting low Zn tolerance: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides. A bulk of F3 progeny all exhibiting high Zn accumulation: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides. A bulk of F3 progeny all exhibiting low Zn accumulation: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides. Experimenter name = H. John Newbury; Experimenter phone = 0121 414 5581; Experimenter fax = 0121 414 5925; Experimenter institute = University of Birmingham; Experimenter address = School of Biosciences; Experimenter address = University of Birmingham; Experimenter address = Edgbaston; Experimenter address = Birmingham; Experimenter zip/postal_code = B15 2TT; Experimenter country = UK Experiment Overall Design: 24 samples were used in this experiment
2008-06-14 | E-GEOD-5738 | biostudies-arrayexpress
Project description:This application is from a NERC-funded consortium (Mark MacNair, Nick Smirnoff, Exeter) and (Brian Ford-Lloyd, John Newbury, Birmingham). Metal tolerance is one of the classic examples of micro-evolution. Despite extensive research the physiological bases of the adaptation in plants are largely unknown. Arabidopsis halleri is a zinc tolerant, zinc accumulating species whereas Arabidopsis petraea is non-accumulating and non-tolerant. The objective of our programme is to identify; a) those key genes that act to determine Zn tolerance and accumulation in Arabidopsis (and which account for the difference in performance of A. halleri and A. petraea grown in the presence of elevated Zn) and; b) those _downstream_ genes that are expressed as part of the tolerance or accumulation response. Phase 1: Total of 24 chips: Material ready by May 2003 The results will a) tell us how effectively material derived from other Arabidopsis species hybridises to the chips, and b) identify genes that are differentially expressed in the two species in the presence and absence of Zn stress (thus providing initial lists of genes that may be responsible for Zn tolerance or accumulation- but see phase 2)· A. halleri exposed to low and high Zn; root and leaf mRNAs extracted: 3 replicates of each: = 12 slides· A. petraea exposed to low and high Zn; root and leaf mRNAs extracted: 3 replicates of each: = 12 slides; Phase 2: Total of 48 chips: Material ready by September 2003; The results will tell us which genes, identified as having appropriate expression patterns, co-segregate with the Zn tolerance or accumulation phenotype and will provide firmer candidate genes for intensive study. Bulks will be produced from F3 progeny (from the halleri x petraea cross) following phentoypic analyses for Zn tolerance and accumulation.· A bulk of F3 progeny all exhibiting high Zn tolerance: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides· A bulk of F3 progeny all exhibiting low Zn tolerance: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides· A bulk of F3 progeny all exhibiting high Zn accumulation: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides· A bulk of F3 progeny all exhibiting low Zn accumulation: exposed to low and high Zn; leaf and root mRNAs: 3 replicates: = 12 slides; Experimenter name = H. John Newbury; Experimenter phone = 0121 414 5581; Experimenter fax = 0121 414 5925; Experimenter department = Newbury lab; Experimenter institute = University of Birmingham; Experimenter address = School of Biosciences; Experimenter address = University of Birmingham; Experimenter address = Edgbaston; Experimenter address = Birmingham; Experimenter zip/postal_code = B15 2TT; Experimenter country = UK Experiment Overall Design: 24 samples were used in this experiment
2008-06-13 | E-GEOD-5613 | biostudies-arrayexpress
Project description:Observations of scarce surface ocean concentrations of dissolved zinc (Zn) have raised the possibility that Zn may co-limit the growth of oceanic phytoplankton, yet testing this hypothesis has been difficult because Zn is highly prone to contamination. Biomarkers of micro-nutrient stress can serve as an alternate means to assay, though biomarker proteins for Zn stress in marine algae are currently uncharacterized. In this study we identified two Zn-responsive proteins in four marine diatom species that became abundant under Zn and Co limitation, but were scarce or undetectable in replete conditions. We refer to these proteins as ZCRP-A and ZCRP-B (Zn/Co Responsive Protein A and B). Sequence similarity of ZCRP-A to the Escherichia coli model COG0523 protein YjiA suggests a Zn2+ binding capability using conserved metal binding sites. Cellular localization by fluorescent tagging and overexpression of these proteins showed that ZCRP-B is part of a membrane-bound transport complex and that ZCRP-A serves as a Zn/Co chaperone with a chloroplastic target. These results imply that ZCRP-A and ZCRP-B are important in intracellular Zn trafficking and high-affinity transport, respectively. Metaproteomic detection of ZCRP-A and ZCRP-B homologs in a variety of eukaryotic protists along a South Pacific Ocean transect demonstrated that both proteins were more abundant in the euphotic zone (0-200m) where dZn and dCo were scarce. These findings describe widely distributed marine algal proteins linked to Zn and Co metabolism that together contribute to our understanding of Zn homeostasis in important marine phytoplankton.
2022-03-02 | PXD026953 | Pride
Project description:Zinc (Zn2+) is an important trace metal ion that has been shown to regulate the expression of several (virulence) genes in streptococci. Previously, we analyzed the genome-wide response of S. pneumoniae to Zn2+-stress. In this work, we have performed a transcriptomic analysis to identify genes that are differentially expressed under intracellular Zn2+-limitation. This revealed a number of genes that are highly upregulated in the absence of extracellular Zn2+, amongst which the genes belonging to the regulon of the Zn2+-responsive repressor AdcR, like adcBCA, encoding a Zn2+-dependent ABC-uptake system, adcAII, encoding a Zn2+-binding lipoprotein, and also virulence genes belonging to the Pht family (phtA, phtB, phtD and phtE). Using transcriptome analysis, lacZ-reporter studies, in vitro DNA binding experiments, and in silico operator predictions, we show that AdcR directly represses the promoters of adcRCBA, adcAII-phtD, phtA, phtB and phtE in the presence of Zn2+. AdcR can also function as an activator, since in the presence of Zn2+ it directly induces expression of adh that encodes a Zn2+-containing alcohol dehydrogenase. In conclusion, the genome-wide transcriptional response of S. pneumoniae to Zn2+-limitation was established, which is mainly mediated via direct regulation by the Zn2+-dependent regulator AdcR. Two condition design comparison of Wild-type strain including a dye swap Refer to individual Series. This SuperSeries is composed of the following subset Series: GSE29234: adcR mutant vs wild type D39 GSE29235: Low Zn vs high Zn in CDM
2011-05-13 | E-GEOD-29236 | biostudies-arrayexpress
Project description:The purpose of this study was to determine the transcriptomes of Mycobacterium tuberculosis m2 6206 (Mtb) exposed to varying concentration of zinc (Zn2+) in vitro that mimic the concentrations of Zn2+ experienced in vivo during infection. Mtb were grown in the chemically defined Sauton's medium without Zn2+ added until expression of Zur-regulated genes were observed, indicating the onset of Zn-limitation. Cells were then treated with with different concentrations of Zn2+ through addition of 500 uM Zn2+, 6uM Zn2+, no added Zn2+, 0.35 mg/mL recombinant calprotectin (CP) or 0.8 µM N,N,N′,N′-tetrakis(2-pyridinylmethyl)-1,2-ethanediamine (TPEN). After 24 hours of exposure to the different [Zn2+] conditions, RNA was harvested, prepared for RNA-seq, and sequenced on the Illumina HiSeq platform with a paired-end (2x150bp) configuration.
2021-04-21 | GSE168659 | GEO
Project description:Magnesium homeostasis is essential for life and depends on magnesium transporters whose activity and ion selectivity need to be tightly controlled. Rhomboid intramembrane proteases pervade the prokaryotic kingdom but their functions are largely elusive. Using proteomics we find that Bacillus subtilis rhomboid protease YqgP interacts with the membrane bound ATP-dependent processive metalloprotease FtsH and cleaves MgtE, the major high-affinity magnesium transporter in B. subtilis. MgtE cleavage by YqgP is potentiated in low magnesium and high manganese or zinc conditions, which protects B. subtilis from Mn2+/ Zn2+ toxicity. The N-terminal cytosolic domain of YqgP binds Mn2+ and Zn2+ and facilitates MgtE cleavage. Independently of its protease activity, YqgP acts as a substrate adaptor for FtsH, which is necessary for degradation of MgtE. YqgP thus unites a protease and pseudoprotease function, which indicates the evolutionary origin of rhomboid pseudoproteases, such as Derlins that are intimately involved in ER associated degradation. Conceptually, the YqgP-FtsH system we describe here is equivalent to a primordial form of ‘ERAD’ in bacteria and exemplifies an ancestral function of rhomboid-superfamily proteins.
2020-01-09 | PXD014578 | Pride