Can some microbes promote host stress and benefit evolutionarily from this strategy?

Area of Science:

• Microbiome research
• Host-microbe interactions
• Evolutionary biology

Background:

• Microbes significantly influence host physiology and behavior.
• Evidence suggests microbes can either increase host stress or enhance stress resilience.
• Understanding these microbial roles is crucial for host health.

Purpose of the Study:

• To review evidence of microbial influence on host stress.
• To explain the evolutionary pressures driving microbial manipulation of host stress.
• To hypothesize distinct life history strategies for "stress" and "resilience" microbes.

Main Methods:

• Literature review of existing studies on microbes, stress, and host physiology.
• Analysis of evolutionary pressures on microbial strategies.
• Discussion of physiological mechanisms linking microbial activity and host stress.

Main Results:

• "Stress microbes" may benefit from inducing host stress via increased glucose, permeability, and immune suppression for replication.
• "Resilience microbes" may benefit from enhancing host stress resilience.
• Hypothesized divergent life history strategies: fast (exploitation) vs. slow (aligned interests).

Conclusions:

• Microbial manipulation of host stress is evolutionarily plausible.
• Distinct microbial strategies impact host stress responses and physiology.
• Further research is needed to test these hypotheses and predictions.