|COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring.|
Summoning the Wind: Fungal Spores Cooperate Hydrodynamically to Enhance Dispersal
If you have a question about this talk, please contact Raymond E. Goldstein.
The forcibly launched spores of ascomycete fungi must eject through a boundary layer of nearly still air in order to be transported by dispersive air ﬂows. Because of their microscopic size spores are quickly brought to rest by fluid drag. However, by coordinating the ejection of thousands or hundreds of thousands of spores, some fungi, such as the crop pathogen Sclerotinia sclerotiorum, are able to sculpt a flow of air that carries spores across the boundary layer and around any intervening obstacles. High speed imaging of the spore launch shows that this synchronization is self-organized, and likely triggered by mechanical stresses within the fruiting body. Many spores are sacrificed in order to create this flow of air—since spores are not genetically identical this cooperative behavior creates the potential for conflict and cheating among spores and between spores and the parent fungus. Surprisingly our calculations show that in order to maximize the benefit that it derives, a spore must synchronize with its neighbors and maximize its cooperative contribution so that cooperative benefits are hydrodynamically targeted to cooperating spores.
This talk is part of the Fluid Mechanics (DAMTP) series.
This talk is included in these lists:
Note that ex-directory lists are not shown.
Other listsBrain Training: secrets, drugs and analysis. Land Economy Departmental Seminar Series REAL Centre
Other talksHow on Earth? Welcome to a Post-Growth, Not-For-Profit World Real Readers Reading Series Two: PhD research into reading: work in progress Bayesian Uncertainty Quantification in Alloy Modelling and Design Science Makers Public Policy Lecture: Inside the Nudge Unit, how small changes can make a big difference MRI-THE WONDER MACHINE: FROM BLUE SKIES TO EVERY DAY USAGE