Submitted to: CAB Reviews: Perspectives in Agriculture, Veterinary Science, Nutrition and Natural Resources
Publication Type: Literature Review
Publication Acceptance Date: 5/11/2022
Publication Date: 6/17/2022
Citation: Burbank, L.P. 2022. Threat of Xylella fastidiosa and options for mitigation in infected plants. CAB Reviews: Perspectives in Agriculture, Veterinary Science, Nutrition and Natural Resources. 2022. https://doi.org/10.1079/cabireviews202217021.
Technical Abstract: The bacterial pathogen Xylella fastidiosa has been the subject of substantial plant disease research for over 100 years. This pathogen continues to threaten agricultural production of many different crops around the world, with significant economic burden from crop loss, disease management, and surveillance costs. In addition to direct economic consequences, X. fastidiosa is a global quarantine issue for plant trade and agricultural policy worldwide. The fastidious nature of X. fastidiosa historically made basic research of its biology challenging, but consistent investment in the problem led to appreciable advances in understanding pathogenesis, transmission by insect vectors, and disease management. Although X. fastidiosa affects long-term perennial crops, there has never been a truly effective treatment for plants once they become infected. This review discusses the most recent progress in treatment for X. fastidiosa in infected plants, including nutritional, chemical, biocontrol, and plant resistance-based strategies. Overall, several treatment approaches are promising for disease mitigation but there is still opportunity for innovation, especially in treatment approaches that can be administered systemically by soil or foliar spray routes. Prevention of severe disease outcomes and crop loss, and the ability to suppress pathogen populations and reduce transmission without heavy reliance on insecticides would have a significant economic and environmental benefits.