Rua da Quinta Grande, 6
Several seminars are held weekly at the Instituto Gulbenkian de Ciência, an initiative that aims to bring together all researchers around the topics under discussion.
The sessions, with internal researchers or guests, contribute to stimulate the open and extremely collaborative culture of the IGC.
You can read the abstract of this seminar to learn more about it.
Resource limitation is a major driver of ecological and evolutionary dynamics of all organisms, including phytoplankton. Short-term responses to resource limitation include plastic re-wiring of the molecular and metabolic phenotypes of cells. Less is known about the evolution of resource requirements and the molecular phenotype after longer-term selection by resource limitation. Can competitive abilities adapt to limiting resources? Do requirements for different resources evolve independently or are trade-offs intrinsic? What is the metabolic basis of this evolutionary adaptation? To answer these questions, we have employed a variety of approaches, from highly controlled evolution experiments of a single model green alga in chemostats, to outdoor mesocosm experiments exposed to natural climatic and biotic community complexity. We have investigated ecological and evolutionary change in individual-level traits, protein expression and population-level resource requirements. Across these experiments and levels of biological organization, we found that selection by limiting resources results in adaptive evolutionary change, including reductions in resource requirements. At the molecular level, we found a surprising degree of convergent evolution of core metabolic functions across multiple different low-resource selection environments. We do not observe the evolution of trade-offs between competitive abilities in different low-resource environments, suggesting that phytoplankton may be a unique group among aquatic organisms due to their use of non-substitutable (essential) resources. I discuss ecological consequences of such evolutionary change on the outcome of competitive community assembly.
These cookies are used to enhance your browsing experience, security and our website's performance, allowing you to access the main features of the website. Therefore, they are always enabled. This type of cookies includes cookies that allow you to be remembered as you browse the website during a single session.
These cookies collect information about the use of the website to improve the services provided and to evaluate the performance of the website. Some of these cookies may be used to test pages or the functionality of the website by measuring the reaction of users. These cookies may be our own and / or owned by third parties.
These cookies are third-party cookies that allow to connect to social media and share multimedia content from our website on those networks. Some of these cookies help us to adapt advertising outside of our website to the interests of the users. By disabling these cookies, it will no longer be possible to directly share our content in any social media
For more information about cookies and the processing of your personal data, please see the Privacy and Cookies Policy. You can change your cookie settings at any time through the link at the bottom of the page.