Plant Disease (2015) 99, 1457-1467

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Rodrigo P.P. Almeida and Leonard Nunney (2015)
How do plant diseases caused by Xylella fastidiosa emerge?
Plant Disease 99 (11), 1457-1467
Abstract: Emerging plant diseases frequently have significant economic, environmental, cultural, and social impacts. The prediction of new disease emergence, associated with new pathogens or not, remains a difficult and controversial topic. The main factors driving epidemics are often only identified several years after outbreaks, generally revealing that a limited number of factors are associated with the emergence of specific groups of pathogens. This pattern is illustrated in the insect-borne xylem-limited bacterium Xylella fastidiosa, an organism associated with several new plant diseases in different regions of the globe. Research during the last decade focusing on several severe disease outbreaks has led to substantial changes in our understanding of X. fastidiosa biology, ecology, and evolution. This new information has not only led to new insights into aspects of the biology of this bacterium and its interactions with plant and insect hosts, but also made available a phylogenetic framework that has allowed for better inferences concerning factors leading to the emergence of diseases. Here we identify and discuss these main pathways leading to epidemics caused by X. fastidiosa. Our ultimate goal was to raise critical questions and issues for academics and regulatory agencies alike, since the information generated during the last decade has both raised new questions but also clarified old ones.
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Database assignments for author(s): Rodrigo P.P. Almeida

Research topic(s) for pests/diseases/weeds:
review
quarantine treatments/regulations/aspects


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.
Xylella fastidiosa