GEO DataSets

(Submitter supplied) The comparison of transcriptional profiles of roots grown under Fe, S and dual deficiency with those obtained for roots of control plants (grown in a complete nutrient solution) allowed identifying the transcripts differentially expressed in response to each deficiency.

Organism:

Triticum turgidum subsp. durum; Triticum aestivum

Type:

Expression profiling by array

Platform:

GPL13627

12 Samples

Download data: TXT

(Submitter supplied) Iron deficiency is a yield-limiting factor and a worldwide problem for crop production in many agricultural regions, particularly in aerobic and calcareous soils. Graminaceous species, like maize, improve Fe acquisition through the release of phytosiderophores (PS) into the rhizosphere and the following uptake of Fe(III)-PS complexes through specific transporters. Transcriptional profile obtained by roots 12-d-old maize plants under Fe starvation for 1 week (Fe-deficient; 19-d-old plants) were compared with the transcriptional profile obtained by roots of 12-d-old maize plants grown in a nutrient solution containing 100 μM Fe-EDTA for 1 week (Fe-sufficient; 19-d-old plants).

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL17540

6 Samples

Download data: PAIR, TXT

(Submitter supplied) Tomato, a Strategy I model plant for Fe deficiency, is an important economical crop. The transcriptional responses induced by Fe deficiency in tomato roots were previously described (Zamboni et al., 2012). The changes in trascriptome caused by the supply of Fe to plants starved fro 1 week were described in relation to the different nature of chelating agents (Fe-WEHS, Fe-CITRATE and Fe-PS).

Organism:

Solanum lycopersicum

Type:

Expression profiling by array

Platform:

GPL13934

9 Samples

Download data: TXT

(Submitter supplied) Transcriptomic characterization of Malus domestica response to iron and phosphorus deficiency.

Organism:

Malus domestica

Type:

Expression profiling by high throughput sequencing

Platform:

GPL18137

9 Samples

Download data: DIFF

(Submitter supplied) qPCR gene expression profiling of Yellow stripe 1 (ys1) and ys3 mutants. ys1 and ys3 are recessive mutants of maize (Zea mays L.) that result in symptoms typical of Fe deficiency, i.e., interveinal chlorosis of the leaves. The objective of the present work was to identify the genes involved in the ys1 and ys3 phenotypes, so as to extend our understanding of Fe homeostasis in maize.

Organism:

Zea mays

Type:

Expression profiling by RT-PCR

Platform:

GPL16711

36 Samples

Download data: TXT

(Submitter supplied) Iron (Fe) and phosphorus (P) are essential nutrients for plants growth. Despite their abundance in soils, they are barely available for plants. In order to overcome these nutritional stresses, plants have evolved strategies including physiological, biochemical and morphological adaptations. Biosynthesis and release of low molecular weight compounds from the roots play a crucial role in P and Fe mobilization. more...

Organism:

Lupinus albus

Type:

Expression profiling by high throughput sequencing

Platform:

GPL23437

12 Samples

Download data: DIFF

(Submitter supplied) Although urea is the most used nitrogen fertilizer worldwide, little is known on the capacity of crop plants to use urea per se as a nitrogen source for development and growth. To date, the molecular and physiological bases of its transport have been investigated only in a limited number of species. In particular, up to date only one study reported the transcriptomic modulation induced by urea treatment in the model plant Arabidopsis (Mérigout et al., 2008 doi: 10.1104/pp.108.119339). more...

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL17540

12 Samples

Download data: PAIR, TXT

(Submitter supplied) Low phosphate concentrations are frequently a constraint for maize growth and development, and therefore, enormous quantities of phosphate fertilizer are expended in maize cultivation, which increases the cost of planting. Low phosphate stress not only increases root biomass but can also cause significant changes in root morphology. Low phosphate availability has been found to favor lateral root growth over primary root growth by dramatically reducing primary root length and increasing lateral root elongation and lateral root density in Arabdopsis. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL6438

9 Samples

Download data: GPR

(Submitter supplied) Iron (Fe) deficiency is a yield-limiting factor for a variety of field crops across the world and generally results from the interaction of limited soil Fe bioavailability and susceptible genotype cultivation. Tomato, a Strategy I, model plant for Fe deficiency, is an important economical crop. Tomato responses in order to improve Fe uptake are based on acidification of rhizosphere, reduction of Fe3+ to Fe2+ and transport of Fe2+ into the cells.

Organism:

Solanum lycopersicum

Type:

Expression profiling by array

Platform:

GPL13934

6 Samples

Download data: TXT

(Submitter supplied) The goal of this study was to evaluate the molecular mechanisms by which Brachypodium distachyon grown with and without Pseudomonas fluorescens (P. fluorescens) strain SBW25 respond to Fe deprivation. Fe deprivation induced Brachypodium secretion of phytosiderophores and reduced biomass production while inoculation with P. fluorescens resulted in alterations of extracellular metabolite abundances. Results provide insight into the role of iron in interactions between a host plant and root associated bacteria.

Organism:

Pseudomonas fluorescens; Brachypodium distachyon

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL29168 GPL29167

30 Samples

Download data: TXT

(Submitter supplied) The purpose of this experiment was to identify any genes differentially expressed between the Soybean Near Isogenic Lines iron efficient Clark and iron inefficient IsoClark under iron sufficient hydroponic conditions. These genes would represent constituative genetic differences between the NILs. Keywords: Near Isogenic Line Comparison of Unstressed Soybean Plants

Organism:

Glycine max

Type:

Expression profiling by array

Platform:

GPL3015

6 Samples

Download data: TXT

(Submitter supplied) This experiment was designed to identify candidate genes related to iron deficiency chlorosis in soybeans that are differentially expressed between near isogenic lines developed for their differential tolerance to low iron conditons. Keywords: Stress Response Analysis

Organism:

Glycine max

Type:

Expression profiling by array

Platform:

GPL1013

6 Samples

Download data: GPR

(Submitter supplied) Fe deficiency stimulates a coordinated response involving reduction, transport and redistribution of Fe in the roots. The expression of genes regulated by Fe deficiency in the two contrasting Arabidopsis thaliana ecotypes, Tsu-1 and Kas-1, shows that different ecotypes can respond in diverse ways, with different Fe regulated overrepresented categories. We use microarrays to analyze the Fe deficiency responses of contrasting Arabidopsis thaliana ecotypes (Tsu-1 and Kas-1).

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

18 Samples

Download data: CEL

(Submitter supplied) Iron (Fe) is an essential micronutrient for almost all organisms. However, Fe is frequently inaccessible to plants. To acquire insoluble Fe from soil, rice (Oryza sativa L.) plants employ a Combined Strategy, which is composed by all features of Strategy II, common to all Poaceae species, and some features of the Strategy I from non-Poaceae. To understand the evolution of Fe uptake mechanisms, we analyzed the root transcriptomic response to Fe deficiency in two species from the Oryza genus: O. more...

Organism:

Oryza sativa; Oryza rufipogon

Type:

Expression profiling by high throughput sequencing

Platforms:

GPL15800 GPL13160

8 Samples

Download data: TSV

(Submitter supplied) Due to limited bio-availability of Fe, plants evolved adaptive alterations in development regulated at the transcriptional level. We investigated the early transcriptional response to Fe deficiency.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

22 Samples

Download data: CEL

(Submitter supplied) To test the hypothesis that gene expression by the fungal partner in this beneficial interaction is modulated by the plant host, Trichoderma virens was co-cultured with maize or tomato in a hydroponic system allowing interaction with the roots. The transcriptomes for T. virens alone were compared with fungus-inoculated tomato or maize roots by hybridization on oligonucleotide microarrays Based on the relevant role of Trichoderma virens as a biological control agent this study provides a better knowledge of its crosstalk with plants in a host-specific manner.

Organism:

Trichoderma virens

Type:

Expression profiling by array

Platform:

GPL19568

11 Samples

Download data: TXT

(Submitter supplied) Iron (Fe) plays a pivotal role in several metabolic and biosynthetic pathways essential for plant growth. Fe deficiency in plants severely affects the overall crop yield. Despite several studies on iron deficiency responses in different plant species, these mechanisms remain unclear in the allohexaploid wheat, which is the most widely cultivated commercial crop. In order to gain a comprehensive insight into molecular responses of bread wheat when exposed to iron deficiency, we studied transcriptomic changes in the roots and flag leaves of wheat plants subjected to iron-deficient and iron-sufficient conditions during early grain filling.

Organism:

Triticum aestivum

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17701

12 Samples

Download data: XLSX

(Submitter supplied) Deprivation of mineral nutrients causes significant retardation of plant growth. This slow growth is assumed to be associated with both nutrient specific transcriptional responses and additionally with common transcription patterns. In this study we adjusted the external supply of iron, potassium and sulfur to cause a similar retardation of growth. Global transcriptome analyses were performed to investigate whether the growth limitation by the different nutrient deficiencies triggered specific or similar transcriptional responses. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL21430

16 Samples

Download data: CEL

(Submitter supplied) Aluminum toxicity is one of the major limiting factors for many crops worldwide. The primary symptom of Al toxicity syndrome is the inhibition of root growth, leading to poor water and nutrient absorption. The causes of this inhibition are still elusive, with several biochemical pathways being affected and with a significant variation between species. Most of the work done so far to investigate the genes responsible for Al tolerance used hydroponic culture. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL4032

24 Samples

Download data: CEL

(Submitter supplied) We have characterized the transcriptional response in Maize under limiting and sufficient nitrogen conditions, and have identified a set of genes whose expression profiles can quantitatively assess the response of plants to those conditions.

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL14616

90 Samples

Download data: CEL