Apr 10, 2020

Innovation, conservation and repurposing of gene function in plant root cell type development

BioRxiv : the Preprint Server for Biology
Carla IbanezSiobhan Brady

Abstract

Plant species have evolved myriads of solutions to adapt to dynamic environments, including complex cell type development and regulation. To understand this diversity, we profiled tomato root cell type translatomes and chromatin accessibility. Using xylem differentiation in tomato, relative to Arabidopsis, examples of functional innovation, repurposing and conservation of transcription factors are described. Repurposing and innovation of genes are further observed within an exodermis regulatory network and illustrate its function. Translatome analyses of rice, tomato and Arabidopsis tissues suggest that root meristems are more conserved, and that the functions of constitutively expressed genes are more conserved than those of cell type/tissue-enriched genes. These observations suggest that higher-order properties of cell type and pan-cell type regulation are conserved between plants and animals.

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Mentioned in this Paper

Regulation of Biological Process
Acclimatization
Reproduction
Etiology
Evaluation
Wild bird
Adaptation
Arabidopsis thaliana extract
Morphogenesis
probe gene fragment

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