What's new?

Jan 16 - Congradulation to Shaul Pollak for publishing in PNAS!!

In this work we show experimentally that ComQXP pherotypes undergo negative frequency dependent selection during swarming.


Feb 16 - Congradulations to Eran Even Tov and Shira Omer for their publication in PLOS Biology

In this work we show how the accumulation of multiple, redundant, quorum-sensing systems depends on the architecture of the systems and on social cheating. We were helped by Bonnie Bassler, which showed this result to be relevant also for her main model organism, V. harveyi, and not only for our favorite model, B. subtilis.

Dec 16 - We just got our second ERC grant!!

Dec 16 - Congradulations to Eran Even-Tov, Shira Omer and Shaul Pollak for another publication in PLOS Biology (accepted)


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Evolution and development of complex microbial colonies

Bacteria often form complex colonies, swarms or biofilms when grown on surfaces. These complex communities depend on the secretion of various substances and are characterized by spatially hetrogenous gene expression. We study molecular mechanisms underlying the development and evolution of such complex communities.

Spatial Regulation in Complex Colonies

We utilize light-activated gene expression techniques to study the impact of spatial hetrogeneity and communication on colony development.

Evolution of Quorum Sensing

Bacteria often impact their environment by means of secreted substances. Secretion is often regulated by specific signals the cells make and respond to in a process called quorum sensing. Both secretion of substances and quorum sensing lead to a density dependent cooperative effects. We study the evolution of quorum sensing and cooperative secretion by combining experimental approaches and modeling.


Dr. Avigdor Eldar | Tel Aviv University, Tel Aviv 69978, Israel | Office: Green, 134 | Lab: Green, 132-133 | Phone: +972-3-640-7492 | Email: This email address is being protected from spambots. You need JavaScript enabled to view it.