Microbiome-mediated plasticity directs host evolution along several distinct time scales

Area of Science:

• Evolutionary Biology
• Microbiome Research
• Host-Microbe Interactions

Background:

• Host-associated microbiomes significantly impact host fitness and adaptability.
• Microbiome-mediated plasticity offers a mechanism for hosts to respond to environmental changes.
• The interplay between host evolution and microbiome dynamics is complex and not fully understood.

Purpose of the Study:

• To present a conceptual framework for understanding how microbiome-mediated plasticity influences host evolution.
• To elucidate the multi-timescale processes involved in microbiome-host evolutionary dynamics.
• To propose experimental approaches for testing these concepts.

Main Methods:

• Conceptual analysis and synthesis of existing research on microbiome-mediated plasticity and host evolution.
• Exploration of theoretical frameworks linking microbial interactions to evolutionary trajectories.
• Identification of key experimental avenues for future research.

Main Results:

• Microbiome-mediated plasticity can act as a significant driver or modulator of host genetic adaptation.
• Processes like immune recognition of microbes and microbial transmission dynamics operate on different timescales, influencing evolutionary outcomes.
• The precise mechanisms and net effects of microbiome influence on host evolution remain largely undetermined.

Conclusions:

• Microbiome-mediated plasticity is a critical factor in shaping host evolutionary trajectories.
• Further experimental research is needed to validate the proposed conceptual framework and understand the intricate dynamics.
• Investigating host-microbiome co-evolution is essential for a comprehensive understanding of adaptation.