{"654599":{"#nid":"654599","#data":{"type":"event","title":"Friend or Foe?  Interrogating the Ecophysiology of Reactive Oxygen Species (ROS) in Marine Systems","body":[{"value":"\u003Ch4\u003E\u003Cstrong\u003EThe School of Earth and Atmospheric Sciences Presents Dr. Julia Diaz, Scripps Institution of Oceanography, University of California San Diego\u003C\/strong\u003E\u003C\/h4\u003E\r\n\r\n\u003Cp\u003EFriend or Foe?\u0026nbsp; Interrogating the Ecophysiology of Reactive Oxygen Species (ROS) in Marine Systems\u003C\/p\u003E\r\n\r\n\u003Cp\u003EReactive oxygen species (ROS) are ubiquitous in seawater due to widespread production by microbes and abiotic photochemical reactions.\u0026nbsp; ROS are often assumed to be toxic molecules, causing harm through oxidative stress.\u0026nbsp; However, growing evidence also shows that ROS play a range of beneficial signaling functions in diverse organisms.\u0026nbsp; For example, production of extracellular ROS by model marine phytoplankton has been implicated in growth, cellular redox homeostasis, as well as biological interactions such as grazing and allelopathy.\u0026nbsp; In these ways, ROS infochemistry has the potential to shape both bottom-up and top-down controls on marine productivity and carbon cycling.\u0026nbsp; In this talk, I will present recent work showing how biological ROS production supports the vitality of marine phytoplankton, and I will discuss implications for marine ecosystem health and functioning.\u003C\/p\u003E\r\n","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"A seminar by Dr. Julia Diaz, School of Earth and Atmospheric Sciences"}],"uid":"34458","created_gmt":"2022-01-19 20:16:43","changed_gmt":"2022-04-01 14:27:28","author":"nlawson3","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2022-04-07T12:00:00-04:00","event_time_end":"2022-04-07T13:00:00-04:00","event_time_end_last":"2022-04-07T13:00:00-04:00","gmt_time_start":"2022-04-07 16:00:00","gmt_time_end":"2022-04-07 17:00:00","gmt_time_end_last":"2022-04-07 17:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"hg_media":{"654597":{"id":"654597","type":"image","title":"Julia Diaz","body":null,"created":"1642622708","gmt_created":"2022-01-19 20:05:08","changed":"1642622708","gmt_changed":"2022-01-19 20:05:08","alt":"","file":{"fid":"248244","name":"J. Diaz.JPG","image_path":"\/sites\/default\/files\/images\/J.%20Diaz.JPG","image_full_path":"http:\/\/hg.gatech.edu\/\/sites\/default\/files\/images\/J.%20Diaz.JPG","mime":"image\/jpeg","size":40220,"path_740":"http:\/\/hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/images\/J.%20Diaz.JPG?itok=RQvj8Qos"}}},"media_ids":["654597"],"groups":[{"id":"364801","name":"School of Earth and Atmospheric Sciences (EAS)"}],"categories":[],"keywords":[{"id":"175623","name":"EAS Seminar"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1795","name":"Seminar\/Lecture\/Colloquium"}],"invited_audience":[{"id":"78761","name":"Faculty\/Staff"},{"id":"177814","name":"Postdoc"},{"id":"174045","name":"Graduate students"},{"id":"78751","name":"Undergraduate students"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}