Expression Data at MaizeGDB

About expression data at MaizeGDB

MaizeGDB provides selected expression data on individual genes and for whole genomes. Below is a list of places to look for expression data. MaizeGDB does not incorporate all available expression data; these can be accessed through NCBI’s SRA and GEO databases. To suggest data for inclusion at MaizeGDB, please contact us.

Tools for expression data

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qTeller_logo
qTeller
 
 
 
qTeller (QTL Teller), is a tool that allows users to view gene expression information within a chromosomal interval for QTL or mutant mapping. qTeller, which uses a large collection of expression data from a wide range of published experiments, also facilitates single or two gene scatter plots which are particularly useful for comparing expression patterns of closely related homologs. qTeller also allows visualization of expression information from the maize syntenic orthologs of Sorghum, Rice, Setaria, and Brachypodium. qTeller was developed by James Schnable while he was a graduate student at UC Berkeley.
MaizeMine
MaizeMine
 
 
 
MaizeMine v1.4 integrates the Zea mays Zm-B73-REFERENCE-NAM-5.0 genome assembly with many biological data sets. Homologues are provided for several other monocots and Arabidopsis thaliana. The tabs below show categories for template queries, which provide simple search menus. "Alias and DBxref" template queries are for id conversion between the Z. mays Zm00001eb.1 and RefSeq gene sets and between Zm00001eb.1 and the older MaizeGDB/Gramene gene sets (AGPv4_Zm00001d.2 and AGPv3.21_5b+).

Find Expression for Individual Genes

Expression of Zm-B73-REFERENCE-NAM-5.0 gene models: On the B73 v5 genome browser, select tracks from the RNA-seq tab. Search by gene or region in qTeller. Data in qTeller can also be accessed through Maize Mine. Expression data associated with other versions of this gene model, if any, can be found on the gene model/locus page on the "PAN-GENE" tab in the Overview section.

Expression of Zm-B73-REFERENCE-REFERENCE-GRAMENE-4.0 gene models: On GBrowse, select tracks forRNSseq. Search by gene or region in qTeller. Expression data associated with other versions of this gene model, if any, can be found on the “PAN-GENE” tab of the gene model/locus page.

Expression of gene models from any NAM founder line On JBrowse, select the NAM founder genome from the upper left pull down menu, then select the RNA-seq tracks. Search by gene or region in  qTeller.

Expression of B73 RefGen_v3, and B73 RefGen_v2, gene models: Can be found on the individual gene model page. On GBrowse for v3, and v2, go to the “select tracks” tab, and select tracks for Expression and Transcripts. Expression data associated with other versions of this gene model, if any, can be found on the “PAN-GENE” tab of the gene model/locus page.

Expression for other Genomes: If available, this may be found on the genome’s browser. From the Genome Data Center, go to the "All Genomes" section and open the section named "Complete table of 49 genomes". Click on the assembly name of your genome of interest. If a genome browser is available, it will be shown here, and you can check for expression tracks. Expression data associated with other versions of this gene model, if any, can be found on the “PAN-GENE” tab of the gene model/locus page.

Find Expression for Genome Regions

If available, this may be found on the appropriate genome’s browser. From the Genome Data Center, go to the "All Genomes" section and open the "Complete table of 49 genomes". Click on the assembly name of your genome of interest. If a genome browser is available, it will be shown here, and you can check for expression tracks. You can select the region of genome you are interested in, select expression tracks and visualize or download from the browser.

Expression data for Zm-B73-REFERENCE-NAM-5.0 and Zm-B73-REFERENCE-REFERENCE-GRAMENE-4.0 can be searched at qTeller and Maize Mine.

Expression for all NAM founder lines can be searched at qTeller.

Find Expression for Whole Genomes

FPKM (i.e. normalized) data for Zm-B73-REFERENCE-NAM-5.0 and Zm-B73-REFERENCE-REFERENCE-GRAMENE-4.0, and all NAM founder lines that were the inputs for qTeller can be downloaded here

Bam/bigwig files for Zm-B73-REFERENCE-NAM-5.0 (un-normalized) and be downloaded here.

Bam/bigwig files for all NAM founder lines (un-normalized) can be downloaded here.

B73v5/Mo17 CAU RNA-seq bam/bigwig files (un-normalized) can be downloaded here.