GEO DataSets

(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) Aluminum (Al) toxicity is a major factor limiting crop yields on acid soils. In maize, Al tolerance is a complex phenomenon involving multiple genes and physiological mechanisms yet uncharacterized. To begin elucidating the molecular basis of maize Al toxicity and tolerance, we performed a detailed temporal analysis of root gene expression under Al stress using microarrays with an Al-tolerant and an Al-sensitive maize genotype. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platforms:

GPL1993 GPL1992

64 Samples

Download data: CSV, TXT

(Submitter supplied) Background Ionic aluminum (mainly Al3+) is rhizotoxic and can be present in acid soils at concentrations high enough to inhibit root growth. Many forest tree species grow naturally in acid soils and often tolerate high concentrations of Al. Previously, we have shown that aspen (Populus tremula) releases citrate and oxalate from roots in response to Al exposure. To obtain further insights into the root responses of aspen to Al, we investigated root gene expression at Al conditions that inhibit root growth. more...

Organism:

Populus sp.; Populus tremula

Type:

Expression profiling by array

Platform:

GPL4359

18 Samples

Download data: CEL

(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) 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

(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 aestivum; Triticum turgidum subsp. durum

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) Phytophthora cinnamomi is a devastating soil-borne oomycete with a very broad host range however there remains a major gap in the understanding of plant resistance responses to the pathogen, furthermore, necrotrophic plant-pathogen interactions, particularly those of root pathogens, remain poorly understood. Zea mays exhibits non-host resistance to the pathogen and has been well characterised as a model species. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL4032

12 Samples

Download data: CEL

(Submitter supplied) We found that primary root (PR) is more resistant to salt stress compared with crown roots (CR) and seminal roots (SR). To understand better salt stress responses in maize roots, six RNA libraries were generated and sequenced from primary root (PR), primary roots under salt stress (PR-salt) , seminal roots (SR), seminal roots under salt stress (SR-salt), crown roots (CR), and crown roots under salt stress (CR-salt). more...

Organism:

Zea mays

Type:

Expression profiling by high throughput sequencing

Platform:

GPL15463

6 Samples

Download data: TXT