Virus-Bacteria Rice Co-Infection in Africa: Field Estimation, Reciprocal Effects, Molecular Mechanisms, and Evolutionary Implications

Frontiers in Plant Science
Charlotte TollenaereChristophe Brugidou

Abstract

Simultaneous infection of a single plant by various pathogen species is increasingly recognized as an important modulator of host resistance and a driver of pathogen evolution. Because plants in agro-ecosystems are the target of a multitude of pathogenic microbes, co-infection could be frequent, and consequently important to consider. This is particularly true for rapidly intensifying crops, such as rice in Africa. This study investigated potential interactions between pathogens causing two of the major rice diseases in Africa: the Rice yellow mottle virus (RYMV) and the bacterium Xanthomonas oryzae pathovar oryzicola (Xoc) in order to: 1/ document virus-bacteria co-infection in rice in the field, 2/ explore experimentally their consequences in terms of symptom development and pathogen multiplication, 3/ test the hypothesis of underlying molecular mechanisms of interactions and 4/ explore potential evolutionary consequences. Field surveys in Burkina Faso revealed that a significant proportion of rice fields were simultaneously affected by the two diseases. Co-infection leads to an increase in bacterial specific symptoms, while a decrease in viral load is observed compared to the mono-infected mock. The lack of effect found when...Continue Reading

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Citations

Nov 10, 2017·Frontiers in Plant Science·Araz S AbdullahAyalsew Zerihun
Jan 28, 2021·Scientific Reports·Regina K Cruzado-GutiérrezArash Rashed
Jan 19, 2021·Microbiological Research·Janie ZhangZhenyu Cheng

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Methods Mentioned

BETA
PCR
Assay
ELISA

Software Mentioned

MEGA6
R
CLUSTAL X

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