{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/87029"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/87029","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Circadian, Light and Low Temperature Regulation of Nitrate Reductase in Tomato","abstract":"The similarity in regulation between NR and sucrose phosphate synthase suggested that NR might be subject to low temperature disruptions in its endogenous rhythm as has been demonstrated for SPS in chilling-sensitive species such as tomato. NR regulation is in fact disrupted by low temperatures, however the change is transient and does not alter the phase of the NR endogenous rhythm following the chill. NR rather undergoes a temporary induction of de novo transcription regardless of the time in the circadian cycle that the chilling episode is initiated causing an increase in both NR protein and activity. The untimely depletion of reductant and TCA carbon skeletons as well as accumulations of toxic byproducts of nitrogen assimilation that this would cause is likely to be detrimental to the plant.","abstract_html":"The similarity in regulation between NR and sucrose phosphate synthase suggested that NR might be subject to low temperature disruptions in its endogenous rhythm as has been demonstrated for SPS in chilling-sensitive species such as tomato. NR regulation is in fact disrupted by low temperatures, however the change is transient and does not alter the phase of the NR endogenous rhythm following the chill. NR rather undergoes a temporary induction of de novo transcription regardless of the time in the circadian cycle that the chilling episode is initiated causing an increase in both NR protein and activity. The untimely depletion of reductant and TCA carbon skeletons as well as accumulations of toxic byproducts of nitrogen assimilation that this would cause is likely to be detrimental to the plant.","abstract_has_math":false,"creators":["Tucker, Dawn Elizabeth"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Plant Biology","degree_department":null,"school":null,"contributors":["Ort, Donald R."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-28T15:22:38Z","date_published":"2015-09-28T15:22:38Z","updated_at":"2026-07-22T22:26:28Z","subjects":["Biology, Plant Physiology"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI3030485"],"render_values":[{"text":"(MiAaPQ)AAI3030485","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/87029","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Ort, Donald R."]},{"key":"dc:creator","label":"Author","values":["Tucker, Dawn Elizabeth"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-09-28T15:22:38Z","10000-01-01","2001"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Plant Biology"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Biology, Plant Physiology"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/87029","(MiAaPQ)AAI3030485"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The similarity in regulation between NR and sucrose phosphate synthase suggested that NR might be subject to low temperature disruptions in its endogenous rhythm as has been demonstrated for SPS in chilling-sensitive species such as tomato. NR regulation is in fact disrupted by low temperatures, however the change is transient and does not alter the phase of the NR endogenous rhythm following the chill. NR rather undergoes a temporary induction of de novo transcription regardless of the time in the circadian cycle that the chilling episode is initiated causing an increase in both NR protein and activity. The untimely depletion of reductant and TCA carbon skeletons as well as accumulations of toxic byproducts of nitrogen assimilation that this would cause is likely to be detrimental to the plant.","Made available in DSpace on 2015-09-28T15:22:38Z (GMT). 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NR regulation is in fact disrupted by low temperatures, however the change is transient and does not alter the phase of the NR endogenous rhythm following the chill. NR rather undergoes a temporary induction of de novo transcription regardless of the time in the circadian cycle that the chilling episode is initiated causing an increase in both NR protein and activity. The untimely depletion of reductant and TCA carbon skeletons as well as accumulations of toxic byproducts of nitrogen assimilation that this would cause is likely to be detrimental to the plant.","Made available in DSpace on 2015-09-28T15:22:38Z (GMT). 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