A Machine Learning Approach to Predict Gene Regulatory Networks in Seed Development in Arabidopsis

Frontiers in Plant Science
Ying NiLenwood S Heath

Abstract

Gene regulatory networks (GRNs) provide a representation of relationships between regulators and their target genes. Several methods for GRN inference, both unsupervised and supervised, have been developed to date. Because regulatory relationships consistently reprogram in diverse tissues or under different conditions, GRNs inferred without specific biological contexts are of limited applicability. In this report, a machine learning approach is presented to predict GRNs specific to developing Arabidopsis thaliana embryos. We developed the Beacon GRN inference tool to predict GRNs occurring during seed development in Arabidopsis based on a support vector machine (SVM) model. We developed both global and local inference models and compared their performance, demonstrating that local models are generally superior for our application. Using both the expression levels of the genes expressed in developing embryos and prior known regulatory relationships, GRNs were predicted for specific embryonic developmental stages. The targets that are strongly positively correlated with their regulators are mostly expressed at the beginning of seed development. Potential direct targets were identified based on a match between the promoter regions...Continue Reading

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Related Concepts

Seed Development
Embryo
Genes
Arabidopsis
GRN
Promoter
Gene Expression
Cellular Reprogramming
Genetic Vectors
Grn protein, mouse

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