Plant–Pathogen Warfare under Changing Climate Conditions

Journal Article · 21 May 2018 · Current Biology

DOI: https://doi.org/10.1016/j.cub.2018.03.054 · OSTI ID:1564284

Velásquez, André C. ^[1]; Castroverde, Christian Danve M. ^[2]; He, Sheng Yang ^[3]

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1. Michigan State Univ., East Lansing, MI (United States). MSU-DOE Plant Research Lab.
2. Michigan State Univ., East Lansing, MI (United States). MSU-DOE Plant Research Lab., and Plant Resilience Inst.
3. Michigan State Univ., East Lansing, MI (United States). MSU-DOE Plant Research Lab., Plant Resilience Inst., and Howard Hughes Medical Inst.

Global environmental changes caused by natural and human activities have accelerated in the past 200 years. The increase in greenhouse gases is predicted to continue to raise global temperature and change water availability in the 21^st century. In this Review, we explore the profound effect the environment has on plant diseases — a susceptible host will not be infected by a virulent pathogen if the environmental conditions are not conducive for disease. The change in CO₂ concentrations, temperature, and water availability can have positive, neutral, or negative effects on disease development, as each disease may respond differently to these variations. However, the concept of disease optima could potentially apply to all pathosystems. Plant resistance pathways, including pattern-triggered immunity to effector-triggered immunity, RNA interference, and defense hormone networks, are all affected by environmental factors. On the pathogen side, virulence mechanisms, such as the production of toxins and virulence proteins, as well as pathogen reproduction and survival are influenced by temperature and humidity. For practical reasons, most laboratory investigations into plant–pathogen interactions at the molecular level focus on well-established pathosystems and use a few static environmental conditions that capture only a fraction of the dynamic plant–pathogen–environment interactions that occur in nature. Finally, there is great need for future research to increasingly use dynamic environmental conditions in order to fully understand the multidimensional nature of plant–pathogen interactions and produce disease-resistant crop plants that are resilient to climate change.

• Research Organization: Michigan State Univ., East Lansing, MI (United States). MSU-DOE Plant Research Laboratory
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• Grant/Contract Number: FG02-91ER20021
• OSTI ID: 1564284
• Alternate ID(s): OSTI ID: 1607747
• Journal Information: Current Biology, Vol. 28, Issue 10; ISSN 0960-9822
• Publisher: ElsevierCopyright Statement
• Country of Publication: United States
• Language: English