Plant immunity is compartmentalized and specialized in roots

Chuberre, Coralie ; Plancot, Barbara ; Driouich, Azeddine ; Moore, John P. ; Bardor, Muriel ; Gugi, Bruno ; Vicre, Maïte (2018)

CITATION: Chuberre, C., et al. 2018. Plant immunity is compartmentalized and specialized in roots. Frontiers in Plant Science, 9:1692, doi:10.3389/fpls.2018.01692.

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Roots are important organs for plant survival. In recent years, clear differences between roots and shoots in their respective plant defense strategies have been highlighted. Some putative gene markers of defense responses usually used in leaves are less relevant in roots and are sometimes not even expressed. Immune responses in roots appear to be tissue-specific suggesting a compartmentalization of defense mechanisms in root systems. Furthermore, roots are able to activate specific defense mechanisms in response to various elicitors including Molecular/Pathogen Associated Molecular Patterns, (MAMPs/PAMPs), signal compounds (e.g., hormones) and plant defense activator (e.g., β-aminobutyric acid, BABA). This review discusses recent findings in root defense mechanisms and illustrates the necessity to discover new root specific biomarkers. The development of new strategies to control root disease and improve crop quality will also be reviewed.

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