{"id":15811,"date":"2020-08-14T17:18:14","date_gmt":"2020-08-15T00:18:14","guid":{"rendered":"https:\/\/www.darkenergybiosphere.org\/?page_id=15811"},"modified":"2021-01-15T10:43:05","modified_gmt":"2021-01-15T18:43:05","slug":"nss-rose-jones","status":"publish","type":"page","link":"https:\/\/www.darkenergybiosphere.org\/outputs-resources\/networked-speaker-series\/nss-rose-jones\/","title":{"rendered":"Networked Speaker Series #26"},"content":{"rendered":"
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September 10, 2020<\/h4>\n

Dr. Rose Jones, University of Minnesota<\/h4>\n

Menu for a deep microbe: attempts in understanding microbe-mineral interactions in the deep marine seafloor<\/em><\/h4>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Abstract<\/h3>\n
For m<\/span><\/span>icrobe<\/span><\/span>s in the deep marine subsurface<\/span><\/span>,<\/span><\/span>\u00a0<\/span><\/span>i<\/span><\/span>norganic chemical energy<\/span><\/span>\u00a0often<\/span><\/span>\u00a0<\/span><\/span>is\u00a0<\/span><\/span>the sole energy source<\/span><\/span>, catalyzing<\/span><\/span>\u00a0redox reactions of chemical species<\/span><\/span>\u00a0dissolved in fluid or from<\/span><\/span>\u00a0solid substrate<\/span><\/span>.<\/span><\/span>\u00a0<\/span><\/span>This\u00a0<\/span><\/span>influence<\/span><\/span>s the<\/span><\/span>\u00a0environment\u00a0<\/span><\/span>by altering subsurface minerals and geochemistry<\/span><\/span>.\u00a0<\/span><\/span>I\u2019m<\/span><\/span>\u00a0<\/span><\/span>currently\u00a0<\/span><\/span>looking<\/span><\/span>\u00a0for evidence of how microbes influence mineralogy at East Pacific Rise 9.5\u00b0N, using\u00a0<\/span><\/span>Synchrotron microprobe X-ray fluorescence mapping (XRF), X-ray diffraction (XRD), and X-ray absorption spectroscopies (XAS) to map element distributions and phase identification for crystalline and poorly-crystalline minerals. With this information we can describe how minerals change in space and time<\/span><\/span>\u00a0during the transition from active to inactive<\/span><\/span>\u00a0vent<\/span><\/span>ing, providing context for understanding microbial community patterns<\/span><\/span>.<\/span><\/span>\u00a0<\/span><\/span>Using bioelectrochemistry, I<\/span><\/span>\u00a0<\/span><\/span>also\u00a0<\/span><\/span>found evidence of microbes capable of\u00a0<\/span><\/span>influencing\u00a0<\/span><\/span>cool,\u00a0<\/span><\/span>oxic<\/span><\/span>\u00a0basalt at North Pond, Mid-Atlantic ridge<\/span><\/span>\u00a0through directly transferring electrons from the minerals.\u00a0<\/span><\/span>Overall,\u00a0<\/span><\/span>our results are attempting to understand how microbes and minerals influence each other and local geochemistry in the deep marine seafloor.<\/span><\/span>\u00a0<\/span><\/div>\n

Speaker Biography<\/h3>\n

Dr. Rose Jones is a postdoc at University of Minnesota. She previously was a postdoc at\u00a0<\/span><\/span>Bigelow Laboratory<\/span><\/span>, and won her PhD from Bangor University in the UK. Her research interest is in understanding how microbe-mineral interactions influence microbes and minerals in the non-standard conditions of extreme environments.<\/span><\/span>\u00a0<\/span><\/p>\n

Recording<\/h3>\n