2013.6.14 Peace and War in MIcrobial Communities

2019-07-04 23:41:57 0

Wenying SHOU, Ph. D.

 

Fred Hutchinson Cancer Research Center, Division of Basic Sciences 


 

 

报告时间:2013年6月14日(星期五)下午14:00

 

地点:北京大学定量生物学中心老化学楼东配楼101报告厅(理教路西/老光华楼北侧)

 

摘要:Cooperation – providing a benefit available to others at a cost to one's self – is common in ecosystems and has driven the evolution of biological complexity.  However, Darwinian selection favors "cheaters" that maximize their short-term fitness by consuming benefits without paying a cost.  What could stabilize cooperation against cheating?  One solution is for cooperators to evolve recognition mechanisms to discriminate a cooperating from a cheating partner.  But what mechanisms could have stabilized cooperation against cheating before the evolution of recognition mechanisms?  Using mathematical models and engineered biological systems, we have uncovered two mechanisms through which cooperators keep cheaters at bay: adaptation to stresses and spatial self-organization, neither requiring recognition mechanisms.  

主持人:汤超教授