Climate change and plant pathogens



by LORENZO CIOTTI

Climate change and plant pathogens

Man is the most recent of the factors influencing the environment and has been so for a relatively short time. Its influence began with the development of agriculture and the consequent deforestation of forests to convert them into arable land and pastures, up to today with large emissions of greenhouse gases.

CO2 from industries and means of transport and methane in farms intensive and in rice fields. According to the theory of global warming, or global warming, man is responsible for a large part of the warming period that the Earth is going through today through his greenhouse gas emissions.

A small minority of scientists, on the other hand, believes the weight attributed to man on the climate is overestimated, considering the current phase of climate warming as a natural phase opposed to natural periods of climate cooling.

The weight of human activities on the ongoing climate change is considered preponderant by the consensus of the scientific community, even if it is the subject of a marginal scientific debate.

Climate change and plant pathogens

The study Climate change and plant pathogens, published on the Current opinion in microbiology, explained: "Global food security is threatened by climate change, both directly through responses of crop physiology and productivity, and indirectly through responses of plant-associated microbiota, including plant While the interactions between host plants, pathogens and environmental drivers can be complex, recent research is beginning to indicate certain overall patterns in how plant diseases will affect crop production in future.

Here, we review the results of three methodological approaches: large- scale observational studies, process-based disease models and experimental comparisons of pathosystems under current and future conditions.We find that observational studies have tended to identify rising temperatures as the primary driver of disease impact.

Process-based models suggest that rising temperatures will lead to latitudinal shifts in disease pressure, but drying conditions could mitigate disease risk. Experimental studies suggest that rising atmospheric CO2 will exacerbate disease impacts. Plant diseases may therefore counteract any crop yield increases due to climate change."