Whose trait is it anyways?

We keep finding ways beneficial microbes affect traits of the organisms on which they live. I, @ChandraJack1, @symbiomics & @ME_Frederickson ask the obvious follow-up: how do traits evolve when selection acts on variation in both host and microbe genomes? Our manuscript is out now at ProcB: https://doi.org/10.1098/rspb.2020.2483

One key insight is that counter-intuitiively, conflict can increase mutualism. When hosts and microbes have fitness peaks at different trait values, this evolutionary conflict can actually cause hosts to depend MORE on microbes for optimal trait expression, thereby enhancing the degree of mutualism we would obsesrve.

Another key insight is that the evolution of traits in multiple genomes may favor local adaptation. If hosts are paired with microbes with which they did not share an evolutionary history, this would likely lead to trait mis-expression and appear as a signal of increased fitness with local microbes.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s