GEO DataSets

(Submitter supplied) Transcriptional profiling of 4 maize varieties comparing genetic root response under control temperature conditions with genetic root response under low temperature conditions

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL6438

24 Samples

Download data: GPR, PDF, TXT

(Submitter supplied) Insect elicitors, in particular fatty acid amides like volicitin, have been known to induce defense-related gene expression. Here we investigated transcriptional changes in response to volicitin 60min after treatment locally and in distal parts of the treated leaf.

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL6438

4 Samples

Download data: GPR

(Submitter supplied) Fusarium verticillioides is a detrimental fungus that can contaminate maize grains with mycotoxins that are harmful to human and animal health. Breeding and growing resistant genotypes is one alternative to reduce contamination and subsequent production of mycotoxins by this fungus. However, little is known about the resistant mechanism relevant to breeding in this pathosystem. Therefore, our aim was to identify genes and metabolites that may be related to Fusarium ear rot resistance using resistant and susceptible maize inbreds. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL6438

6 Samples

Download data: GPR, TXT

(Submitter supplied) Z-3-Hexenol and other green leaf volatiles have been known to induce defense-related gene expression. Here we investigated the early transcriptional changes in response to Z-3-hexenol.

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL6438

6 Samples

Download data: TXT

(Submitter supplied) Sporisorium reilianum f. sp. zeae is an important biotrophic pathogen that causes head smut disease in maize. Head smut is not obvious until the tassels and ears emerge. S. reilianum has a very long life cycle that spans almost the entire developmental program of maize after the pathogen successfully invades the root. The aim of this study was to understand at a molecular level how this pathogen interacts with the host during its long life cycle, and how this interaction differs between susceptible and resistant varieties of maize after hyphal invasion. more...

Organism:

Zea mays; Zea mays subsp. mays

Type:

Expression profiling by array

Platform:

GPL6438

4 Samples

Download data: GPR, TXT

(Submitter supplied) Three different maize lines were assayed for differential gene expression in mature leaf tissue. Leaves from the Oh43 maize line are more resistant to insect larvae damage than the original parents, lines Oh40B and W8. The goal of the project was to discover genes highly expressed in the Oh43 line that potentially contributes to insect resistance.

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL6438

12 Samples

Download data: GPR, TXT

(Submitter supplied) Aflatoxin contamination occurring after infection by Aspergillus flavus is a major concern in maize production both pre- and post-harvest. A recent gene expression study of imbibed kernels highlighted induced resistance and gene regulation in kernels. In the present study, stored mRNA was profiled using oligo-nucleotide array. This comparison of stored mRNAs would enhance our understanding of the difference between resistant and susceptible lines at the kernel storage phase. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL6438

4 Samples

Download data: GPR

(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) This study was designed to identify changes in gene expression that occur when corn was grown on different landscape features. Specifically on the backslope or summit/shoulder of a hill. In rolling landscapes, plant available water varies drastically by location and soil type. Almost simultaneously, plants may be flooded out in footslope locations whereas plants in summit locations may be suffering from severe drought. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL6438

18 Samples

Download data: TXT

(Submitter supplied) As maize seedlings germinate into the soil, they encounter an environment teeming with insects seeking rich sources of nutrition. Maize presumably has developed a number of molecular mechanisms to ensure survival at the beginning of its life cycle. Bioassays indicated maize seedlings were more toxic to caterpillars than shoots from 3 or 4 leafed plants. Microarray technology was utilized to document the expression of a number of genes with potential defensive functions in seedling tissue. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL6438

9 Samples

Download data: GPR

(Submitter supplied) This study was designed to identify changes in gene expression when corn was placed under various related stresses including being grown with a competing weed (canola) to the V4 or V8 stage, or when 40% shade cloth was present to the V4 or V8 stage, or under low nitrogen (no added nitrogen fertilizer), or under weed/shade free fertilized control conditions. In all 5 treatments and the control, samples were harvested at V8. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL6438

36 Samples

Download data: TXT

(Submitter supplied) Despite the economic importance of grasses as food, feed and energy crops, little is known about the genes that control their cell wall synthesis, assembly and remodelling. Here we provide a detailed transcriptome analysis that allowed the identification of genes involved in grass cell wall biogenesis. Differential gene-expression profiling, using maize oligonucleotide arrays, was used to identify genes differentially expressed between an elongating internode, containing cells exhibiting primary cell wall synthesis, and an internode that had just ceased elongation and in which many cells were depositing secondary cell wall material. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL6438

6 Samples

Download data: GPR

(Submitter supplied) Aflatoxin contamination caused by the opportunistic pathogen A. flavus is a major concern in maize production prior to harvest and during storage. Previous studies indicate that both constitutive and induced resistance are involved in maize kernel defense against A. flavus infection, little is known about molecular mechanisms of mature kernels in response to fungal infection. The purpose of this study is to determine gene expression differences in maize kernels between resistant and susceptible lines in response to A. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL6438

16 Samples

Download data: GPR

(Submitter supplied) In the current study a microarray (46k, University of Arizona, USA) analysis of 21 European maize (Zea mays L.) parental inbred lines (14 dent and 7 flint) was applied. The aim was the identification of parental genes which expression levels are correlated to heterosis and/or hybrid performance for grain yield (GY) and grain dry matter content (GDMC) in the hybrid progeny (F1). Therefore gene expression profiles of differentially expressed genes of the parental inbred lines at the seedling stage were correlated with GY- and GDMC-field data of 98 flint x dent factorial crosses gained at six different locations in Germany. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL6438

63 Samples

Download data: GPR

(Submitter supplied) Smoke released from burning vegetation functions as an important environmental signal promoting the germination of many plant species following a fire . It not only promotes the germination of species from fire-prone habitats, but several species from non-fire-prone areas also respond, including some crops. Bioactivity-guided fractionation of smoke-water led to the identification of a highly active butenolide compound, 3-methyl-2H-furo[2,3-c]pyran-2-one. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL6438

68 Samples

Download data: TXT

(Submitter supplied) Expression profiling analyses for eight maize inbreds reveals extensive transcriptional variation. This is a companion dataset to an Affymetrix profiling experiment (GEO Series GSE10237). Keywords: Genotype comparison series

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL6438

24 Samples

Download data: GPR

(Submitter supplied) Expression profiling analyses for 5 maize inbreds and 4 hybrids, chosen to represent diversity in genotypes and heterosis responses, revealed a correlation between genetic diversity and transcriptional variation. This is a companion dataset to an Affymetrix profiling experiment (GEO Series GSE10236). Keywords: Genotype comparison series

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL6438

27 Samples

Download data: GPR

(Submitter supplied) Quality Protein Maize (QPM) was created by selecting for genetic modifiers that convert the starchy endosperm of an opaque2 (o2) mutant to a hard, vitreous phenotype. Genetic analysis has shown there are multiple, unlinked o2 modifiers (Opm), but their identity and mode of action are unknown. A microarray hybridization performed with RNA obtained from true breeding o2 progeny with vitreous and opaque kernel phenotypes identified a small group of differentially expressed genes, some of which map at or near the Opm QTLs. more...

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL6438

4 Samples

Download data: GPR

(Submitter supplied) Spotted 70-mer oligo array on glass. The maize array set 46K version contains ~46,000 unique probes from maize Protocol: REHYDRATION AND PRINTING OF THE OLIGONUCLEOTIDE MICROARRAYS 1.Add 15 uL of 3XSSC to each well of the 300 pM oligonucleotide set to make a 20 μM oligonucleotide solution. 2.Transfer onto an orbital shaker for 1 h at RT at 100 rpm. The oligonucleotides are now ready for printing. 3.The maize oligonucleotide microarrays are printed on aminosilane-coated “Superamine” slides (Telechem) using Telechem Type 946 SMP2.0 printing pins. more...

Organism:

Zea mays

18 Series

325 Samples

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