{"id":{"repo_id":"rice","oai_identifier":"oai:repository.rice.edu:1911/17254"},"canonical_url":"https://search.dev.ndltd.org/etd/rice/oai:repository.rice.edu:1911/17254","repository":{"repo_id":"rice","name":"Rice University","base_url":"https://repository.rice.edu/server/oai/request"},"display":{"title":"Characterization of Arabidopsis thaliana mutants defetive in auxin metabolism","abstract":"Auxins are an important class of phytohormones that play a critical role in various aspects of plant growth and development such as cell elongation, cell division, apical dominance, tropisms, and fruit ripening. The most abundant naturally occurring auxin is indole-3-acetic acid (IAA). IAA is found in plants both as the free acid and in conjugated forms. It is believed that the balance between IAA biosynthesis, metabolism, and transport determines the actual levels of IAA in a cell at any given time, but the molecular mechanisms controlling this regulation are largely unknown. In my thesis project, an IAA-alanine resistant mutant from Arabidopsis thaliana, iar4, has been phenotypically characterized and mapped to chromosome 1. Three mutants potentially defective in the last step of IAA biosynthesis have also been characterized. One of these mutants has been tested for complementation with a gene encoding a putative aldehyde oxidase, AtAO4.","abstract_html":"Auxins are an important class of phytohormones that play a critical role in various aspects of plant growth and development such as cell elongation, cell division, apical dominance, tropisms, and fruit ripening. The most abundant naturally occurring auxin is indole-3-acetic acid (IAA). IAA is found in plants both as the free acid and in conjugated forms. It is believed that the balance between IAA biosynthesis, metabolism, and transport determines the actual levels of IAA in a cell at any given time, but the molecular mechanisms controlling this regulation are largely unknown. In my thesis project, an IAA-alanine resistant mutant from Arabidopsis thaliana, iar4, has been phenotypically characterized and mapped to chromosome 1. Three mutants potentially defective in the last step of IAA biosynthesis have also been characterized. One of these mutants has been tested for complementation with a gene encoding a putative aldehyde oxidase, AtAO4.","abstract_has_math":false,"creators":["Chen, Haifeng"],"institution":"Rice University","degree_name":"Master of Science","degree_level":"Masters","degree_discipline":"Natural Sciences","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1999,"date_issued":"1999","date_published":"1999","updated_at":"2026-07-24T04:10:22Z","subjects":["Molecular biology"],"languages":["eng"],"rights":["Copyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/1911/17254","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Chen, Haifeng"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2007-08-20T23:54:53Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2007-08-20T23:54:53Z"]},{"key":"dc:date.issued","label":"Date","values":["1999"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Natural Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Rice University"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Molecular biology"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/1911/17254"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Auxins are an important class of phytohormones that play a critical role in various aspects of plant growth and development such as cell elongation, cell division, apical dominance, tropisms, and fruit ripening. The most abundant naturally occurring auxin is indole-3-acetic acid (IAA). IAA is found in plants both as the free acid and in conjugated forms. It is believed that the balance between IAA biosynthesis, metabolism, and transport determines the actual levels of IAA in a cell at any given time, but the molecular mechanisms controlling this regulation are largely unknown. In my thesis project, an IAA-alanine resistant mutant from Arabidopsis thaliana, iar4, has been phenotypically characterized and mapped to chromosome 1. Three mutants potentially defective in the last step of IAA biosynthesis have also been characterized. One of these mutants has been tested for complementation with a gene encoding a putative aldehyde oxidase, AtAO4."]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Characterization of Arabidopsis thaliana mutants defetive in auxin metabolism"]}]}],"canonical_facts":{"dc:creator":["Chen, Haifeng"],"dc:date.accessioned":["2007-08-20T23:54:53Z"],"dc:date.available":["2007-08-20T23:54:53Z"],"dc:date.issued":["1999"],"dc:description.abstract":["Auxins are an important class of phytohormones that play a critical role in various aspects of plant growth and development such as cell elongation, cell division, apical dominance, tropisms, and fruit ripening. The most abundant naturally occurring auxin is indole-3-acetic acid (IAA). IAA is found in plants both as the free acid and in conjugated forms. It is believed that the balance between IAA biosynthesis, metabolism, and transport determines the actual levels of IAA in a cell at any given time, but the molecular mechanisms controlling this regulation are largely unknown. In my thesis project, an IAA-alanine resistant mutant from Arabidopsis thaliana, iar4, has been phenotypically characterized and mapped to chromosome 1. Three mutants potentially defective in the last step of IAA biosynthesis have also been characterized. One of these mutants has been tested for complementation with a gene encoding a putative aldehyde oxidase, AtAO4."],"dc:format.mimetype":["application/pdf"],"dc:identifier.uri":["https://hdl.handle.net/1911/17254"],"dc:language.iso":["eng"],"dc:rights":["Copyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder."],"dc:subject":["Molecular biology"],"dc:title":["Characterization of Arabidopsis thaliana mutants defetive in auxin metabolism"],"dc:type":["Thesis"],"thesis:degree_discipline":["Natural Sciences"],"thesis:degree_level":["Masters"],"thesis:degree_name":["Master of Science"],"thesis:institution_name":["Rice University"]},"updated_at":"2026-07-24T04:10:22Z"}