Citrus plant immunity: molecular mechanisms underlying pathogen-citrus interactions

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In order to develop novel control strategies for disease prevention in citrus, it is essential to expand and consolidate our knowledge regarding the molecular interaction of citrus plants with their pathogens, especially regarding fundamental key-players such as PAMPs, PRRs, effectors and R-genes.

Schematic representation of X. fastidiosa interaction with resistant and susceptible genotypes.
Schematic representation of X. fastidiosa interaction with resistant and susceptible genotypes.

This review by Dalio et al. provides an overview of our understanding of citrus plant immunity, focusing on the molecular mechanisms involved in the interactions with viruses, bacteria, fungi, oomycetes, and vectors related to the following main diseases: tristeza, psorosis, citrus variegated chlorosis (CVC), citrus canker, huanglongbing (HLB), brown spot, post-bloom, anthracnose, gummosis, and citrus root rot. As perennial woody plants, citrus are in constant interaction with various abiotic and biotic factors, including viroids, viruses, mollicutes, bacteria, oomycetes and fungi. Many of the pathosystems are highly complex and require a deeper understanding to enable development of suitable disease control strategies.

This paper is part of the Annals of Botany Special Issue on Plant Immunity. It will be free access till June 2017 and after April 2018.

Reference

Dalio, R. J. D., Magalhães, D. M., Rodrigues, C. M., Arena, G. D., Oliveira, T. S., Souza-Neto, R. R., … Machado, M. A. (2017). PAMPs, PRRs, effectors and R-genes associated with citrus–pathogen interactions. Annals of Botany, mcw238. https://doi.org/10.1093/aob/mcw238


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