{"id":4811,"date":"2019-03-08T19:11:05","date_gmt":"2019-03-08T19:11:05","guid":{"rendered":"https:\/\/blogs.uakron.edu\/tiered-mentoring\/?p=4811"},"modified":"2022-10-07T19:11:49","modified_gmt":"2022-10-07T19:11:49","slug":"bacteria-forming-iron-caves","status":"publish","type":"post","link":"https:\/\/blogs.uakron.edu\/tiered-mentoring\/2019\/03\/08\/bacteria-forming-iron-caves\/","title":{"rendered":"Bacteria forming iron caves?"},"content":{"rendered":"\r\n

[Past Projects]<\/span><\/h3>\r\n

Dr. John Senko and Melissa Mulford<\/h3>\r\n\r\n\r\n\r\n\r\n
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Figure 1. Banded Iron Formation (BIF) sample.\r\nlink: https:\/\/kids.britannica.com\/students\/assembly\/view\/107856<\/a><\/figcaption><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n
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Figure 2. Shewanella oneidensis<\/em> MR-1 growing on hematite, using iron as an electron acceptor.\r\nlink: https:\/\/www.livescience.com\/28163-bio-batteries-one-step-closer.html<\/a><\/figcaption><\/figure>\r\n\r\n\r\n\r\n\r\nBackground:<\/strong>\r\n\r\n\r\n\r\n\r\n\r\nBanded iron formations (BIF) are the world\u2019s largest and most widespread source of iron. The Carajas BIF of Brazil is associated with the presence of a high-grade iron ore and extensive cave development. The formation of these caves appears to be through microbial iron reduction, driven by the organic carbon from high surficial primary productivity in overlying soils. In order for the ore to form, it must be depleted of silica, yet there is no clear explanation of how the silica is being mobilized. Silica has a low solubility in water and is difficult to dissolve without a catalyst at circumneutral pH. We know iron reduction is occurring within the caves and this changes iron to its soluble form, but there is no redox reaction for silica. This suggests the possibility that iron redox reactions influence the dissolution of silica.\r\n\r\n\r\n\r\n\r\n\r\nCurrent Research Projects:<\/strong>\r\n\r\n\r\n\r\n\r\n\r\nWe are trying to understand the process of silica mobilization through microbially driven iron redox reactions, using bacterial cultures grown in both anaerobic and aerobic conditions with iron and silica.\r\n\r\n\r\n\r\n\r\n\r\nTo analyze these bacterial cultures, we will do both geochemical and biological analyses.\r\n\r\n\r\n\r\n\r\n\r\n Skills you will develop: <\/strong>\r\n\r\n\r\n\r\n\r\n\r\nCulturing bacteria \u00b7 Growing bacteria in anaerobic conditions and using an anaerobic chamber \u00b7 Creating various forms of media \u00b7 Various geochemical analyses \u00b7 Using a centrifuge, autoclave, pH meter, pipettes, spectrometer, ion chromatographer, microscope \u00b7 You will begin to gain an understanding of the complex relationships between microbial life and geological processes.\r\n\r\n\r\n\r\n\r\n\r\n
\r\n\r\n\r\n\r\n\r\n\r\nClick here to learn more about Dr. Senkos\u2019 lab.<\/a>","protected":false},"excerpt":{"rendered":"

[Past Projects] Dr. John Senko and Melissa Mulford Background: Banded iron formations (BIF) are the world\u2019s largest and most widespread source of iron. The Carajas BIF of Brazil is associated with the presence of a high-grade iron ore and extensive cave development. The formation of these caves appears to be through microbial iron reduction, driven … Continue reading Bacteria forming iron caves?<\/span><\/a><\/p>\n","protected":false},"author":4695,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[125789],"tags":[],"class_list":["post-4811","post","type-post","status-publish","format-standard","hentry","category-past-projects"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/blogs.uakron.edu\/tiered-mentoring\/wp-json\/wp\/v2\/posts\/4811","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.uakron.edu\/tiered-mentoring\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.uakron.edu\/tiered-mentoring\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.uakron.edu\/tiered-mentoring\/wp-json\/wp\/v2\/users\/4695"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.uakron.edu\/tiered-mentoring\/wp-json\/wp\/v2\/comments?post=4811"}],"version-history":[{"count":1,"href":"https:\/\/blogs.uakron.edu\/tiered-mentoring\/wp-json\/wp\/v2\/posts\/4811\/revisions"}],"predecessor-version":[{"id":4812,"href":"https:\/\/blogs.uakron.edu\/tiered-mentoring\/wp-json\/wp\/v2\/posts\/4811\/revisions\/4812"}],"wp:attachment":[{"href":"https:\/\/blogs.uakron.edu\/tiered-mentoring\/wp-json\/wp\/v2\/media?parent=4811"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.uakron.edu\/tiered-mentoring\/wp-json\/wp\/v2\/categories?post=4811"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.uakron.edu\/tiered-mentoring\/wp-json\/wp\/v2\/tags?post=4811"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}