Coordinated regulation of maize genes during increasing exposure to ultraviolet radiation: identification of ultraviolet-responsive genes, functional processes and associated potential promoter motifs

Genetic gain in the yield of modern maize reflects increased stress tolerance. The manipulation of genes for deliberate alterations in tolerance relies on an understanding of the regulation and components of stress responses. Transcriptome analysis of an ultraviolet (UV) radiation time course with p...

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Bibliographic Details
Published in:Plant biotechnology journal 2007-11, Vol.5 (6), p.677-695
Main Authors: Blanding, Carletha R, Simmons, Susan J, Casati, Paula, Walbot, Virginia, Stapleton, Ann E
Format: Article
Language:English
Subjects:
corn
Gene Expression Profiling
Gene Expression Regulation, Plant - radiation effects
gene ontology
Genes, Plant
Linear Models
maize
microarray
motifs
Oligonucleotide Array Sequence Analysis
Promoter Regions, Genetic
time course
Time Factors
ultraviolet
ultraviolet radiation
Ultraviolet Rays
Zea mays - genetics
Zea mays - radiation effects
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Summary:Genetic gain in the yield of modern maize reflects increased stress tolerance. The manipulation of genes for deliberate alterations in tolerance relies on an understanding of the regulation and components of stress responses. Transcriptome analysis of an ultraviolet (UV) radiation time course with paired treatment and control measurements yielded groups of coordinately regulated genes and gene ontology processes. A comparison of the patterns of gene expression with patterns of morphological changes allowed the identification of physiologically relevant gene expression regulons. A set of genes significantly affected by UV radiation in maize leaves was selected by linear modelling plus order-restricted inference profile matches. This gene list was used to find upstream sequence motifs that predict the UV regulation of maize gene expression.
ISSN:1467-7644
1467-7652
DOI:10.1111/j.1467-7652.2007.00282.x