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Comparative transcriptomic characterization of aluminum, sodium chloride, cadmium and copper rhizotoxicities in Arabidopsis thaliana.

TLDR
Both general and specific genes were induced in Arabidopsis roots exposed to various rhizotoxic ions, and several defense systems were triggered by all stressors, while specific defense genes were also induced by individual stressors.
Abstract
Background Rhizotoxic ions in problem soils inhibit nutrient and water acquisition by roots, which in turn leads to reduced crop yields. Previous studies on the effects of rhizotoxic ions on root growth and physiological functions suggested that some mechanisms were common to all rhizotoxins, while others were more specific. To understand this complex system, we performed comparative transcriptomic analysis with various rhizotoxic ions, followed by bioinformatics analysis, in the model plant Arabidopsis thaliana.

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Journal ArticleDOI

Root responses to cadmium in the rhizosphere: a review

TL;DR: The development of apoplastic barriers to Cd movement to the xylem is described and recent experiments indicating that their maturation is accelerated by high Cd concentrations in their immediate locality are highlighted.
Journal ArticleDOI

Response to copper excess in Arabidopsis thaliana: Impact on the root system architecture, hormone distribution, lignin accumulation and mineral profile

TL;DR: The effects on mineral profile, hormonal status, mitotic activity, cell viability and lignin deposition changes on the Cu(2+)-induced reorganization of the root system architecture are discussed.
Journal ArticleDOI

Responses of Plant Proteins to Heavy Metal Stress—A Review

TL;DR: This review provides a broad overview of recent advances in cellular protein research with regards to heavy metal tolerance in plants and discusses how plants maintain functional and healthy proteomes for survival under such capricious surroundings.
Journal ArticleDOI

Sugar Transporters in Plants: New Insights and Discoveries.

TL;DR: This review highlights recent findings that address the path of phloem loading of sucrose in rice and maize leaves, shed light on how plant pathogens hijack sugar transporters to obtain carbohydrates for pathogen survival, and how the plant employs sugar transportters to defend against pathogens.
Journal ArticleDOI

Managing heavy metal toxicity stress in plants: biological and biotechnological tools.

TL;DR: This review briefly summarizes some recent cell biological, molecular and proteomic findings concerning the responses of plant roots to heavy metal ions in the rhizosphere, metal ion-induced reactions at the cell wall-plasma membrane interface, and various aspects of heavy metal ion uptake and transport in plants via membrane transporters.
References
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Journal ArticleDOI

Cluster analysis and display of genome-wide expression patterns

TL;DR: A system of cluster analysis for genome-wide expression data from DNA microarray hybridization is described that uses standard statistical algorithms to arrange genes according to similarity in pattern of gene expression, finding in the budding yeast Saccharomyces cerevisiae that clustering gene expression data groups together efficiently genes of known similar function.
Journal ArticleDOI

Plant responses to drought, salinity and extreme temperatures: towards genetic engineering for stress tolerance

TL;DR: The present review summarizes the recent advances in elucidating stress-response mechanisms and their biotechnological applications and examines the following aspects: regulatory controls, metabolite engineering, ion transport, antioxidants and detoxification, late embryogenesis abundant (LEA) and heat-shock proteins.
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Two transcription factors, DREB1 and DREB2, with an EREBP/AP2 DNA binding domain separate two cellular signal transduction pathways in drought- and low-temperature-responsive gene expression, respectively, in Arabidopsis.

TL;DR: Overexpression of the DREB1A cDNA in transgenic Arabidopsis plants not only induced strong expression of the target genes under unstressed conditions but also caused dwarfed phenotypes in the transgenic plants, and revealed freezing and dehydration tolerance.
Journal ArticleDOI

GENEVESTIGATOR. Arabidopsis Microarray Database and Analysis Toolbox

TL;DR: Genevestigator as mentioned in this paper is a web-browser interface for gene expression analysis using Affymetrix GeneChip data, which allows users to retrieve the expression patterns of individual genes throughout chosen environmental conditions, growth stages, or organs.
Journal ArticleDOI

A novel cis-acting element in an Arabidopsis gene is involved in responsiveness to drought, low-temperature, or high-salt stress.

TL;DR: The rd29A promoter in both transgenic Arabidopsis and tobacco was analyzed and a novel cis-acting, dehydration-responsive element (DRE) containing 9 bp, TACCGACAT, was identified that is involved in the first rapid response of rd 29A to conditions of dehydration or high salt.
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