Diazotrophs increase plant productivity by providing ammonia directly to plants in the rhizosphere or through association with the roots (Sun et al., 2021). Leveraging diazotrophs can aid in the reduction or application of harmful synthetic nitrogen fertilizers. This thesis aims to use plant root proteins, or lectins, to more rapidly recover viable diazotrophs that are likely to associate with crops. In this study, lectins, are used to recover bacteria from bulk soil by taking advantage of the binding relationship between lectins and bacterial cell surface polysaccharides. When commercially-available lectins were used with a magnetic pulldown to separate the lectin, bacterial complex from soil, a different community of bacteria was selected in comparison to the native soil population. The lectin assay recovered species from Classes known to contain diazotrophs and other nutrient cyclers such as: Actinobacteria, Alphaproteobacteria, Bacilli, Betaproteobacteria, Chloroflexia, Cytophagia, Deltaproteobacteria, Gammapoteobacteria, and Sphingobacteriia.
","abstract_html":"<p>Diazotrophs increase plant productivity by providing ammonia directly to plants in the rhizosphere or through association with the roots (Sun et al., 2021). Leveraging diazotrophs can aid in the reduction or application of harmful synthetic nitrogen fertilizers. This thesis aims to use plant root proteins, or lectins, to more rapidly recover viable diazotrophs that are likely to associate with crops. In this study, lectins, are used to recover bacteria from bulk soil by taking advantage of the binding relationship between lectins and bacterial cell surface polysaccharides. When commercially-available lectins were used with a magnetic pulldown to separate the lectin, bacterial complex from soil, a different community of bacteria was selected in comparison to the native soil population. The lectin assay recovered species from Classes known to contain diazotrophs and other nutrient cyclers such as: Actinobacteria, Alphaproteobacteria, Bacilli, Betaproteobacteria, Chloroflexia, Cytophagia, Deltaproteobacteria, Gammapoteobacteria, and Sphingobacteriia.</p>","abstract_has_math":false,"creators":["Horton, Alana"],"institution":null,"degree_name":"Master of Science","degree_level":"Master's Thesis","degree_discipline":"Biological Science","degree_department":null,"school":null,"contributors":["Shayin Gottlieb, PhD","Bridget Hansen, PhD"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2026,"date_issued":"2026-05-29T07:00:00Z","date_published":"2026-05-29T07:00:00Z","updated_at":"2026-07-24T02:05:00Z","subjects":["Bacteria","Diazotrophs","Lectins","Isolation","Soil","BNF","Roots","Agricultural Science","Agronomy and Crop Sciences","Biology","Life Sciences","Microbiology","Molecular Biology"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://scholar.dominican.edu/biological-sciences-masters-theses/38","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Shayin Gottlieb, PhD","Bridget Hansen, PhD"]},{"key":"dc:creator","label":"Author","values":["Horton, Alana"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2026-05-29T07:00:00Z"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Biological Science"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Master's Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Bacteria","Diazotrophs","Lectins","Isolation","Soil","BNF","Roots","Agricultural Science","Agronomy and Crop Sciences","Biology","Life Sciences","Microbiology","Molecular Biology"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://scholar.dominican.edu/biological-sciences-masters-theses/38"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Diazotrophs increase plant productivity by providing ammonia directly to plants in the rhizosphere or through association with the roots (Sun et al., 2021). Leveraging diazotrophs can aid in the reduction or application of harmful synthetic nitrogen fertilizers. This thesis aims to use plant root proteins, or lectins, to more rapidly recover viable diazotrophs that are likely to associate with crops. In this study, lectins, are used to recover bacteria from bulk soil by taking advantage of the binding relationship between lectins and bacterial cell surface polysaccharides. When commercially-available lectins were used with a magnetic pulldown to separate the lectin, bacterial complex from soil, a different community of bacteria was selected in comparison to the native soil population. The lectin assay recovered species from Classes known to contain diazotrophs and other nutrient cyclers such as: Actinobacteria, Alphaproteobacteria, Bacilli, Betaproteobacteria, Chloroflexia, Cytophagia, Deltaproteobacteria, Gammapoteobacteria, and Sphingobacteriia.
"]},{"key":"dc:title","label":"Title","values":["Detection and Capture of Nitrogen Fixing Bacteria From Soil and Roots Using Plant Specific Lectins"]}]}],"canonical_facts":{"dc:contributor":["Shayin Gottlieb, PhD","Bridget Hansen, PhD"],"dc:creator":["Horton, Alana"],"dc:date.available":["2026-05-29T07:00:00Z"],"dc:description.abstract":["Diazotrophs increase plant productivity by providing ammonia directly to plants in the rhizosphere or through association with the roots (Sun et al., 2021). Leveraging diazotrophs can aid in the reduction or application of harmful synthetic nitrogen fertilizers. This thesis aims to use plant root proteins, or lectins, to more rapidly recover viable diazotrophs that are likely to associate with crops. In this study, lectins, are used to recover bacteria from bulk soil by taking advantage of the binding relationship between lectins and bacterial cell surface polysaccharides. When commercially-available lectins were used with a magnetic pulldown to separate the lectin, bacterial complex from soil, a different community of bacteria was selected in comparison to the native soil population. The lectin assay recovered species from Classes known to contain diazotrophs and other nutrient cyclers such as: Actinobacteria, Alphaproteobacteria, Bacilli, Betaproteobacteria, Chloroflexia, Cytophagia, Deltaproteobacteria, Gammapoteobacteria, and Sphingobacteriia.
"],"dc:identifier":["https://scholar.dominican.edu/biological-sciences-masters-theses/38"],"dc:subject":["Bacteria","Diazotrophs","Lectins","Isolation","Soil","BNF","Roots","Agricultural Science","Agronomy and Crop Sciences","Biology","Life Sciences","Microbiology","Molecular Biology"],"dc:title":["Detection and Capture of Nitrogen Fixing Bacteria From Soil and Roots Using Plant Specific Lectins"],"thesis:degree_discipline":["Biological Science"],"thesis:degree_level":["Master's Thesis"],"thesis:degree_name":["Master of Science"]},"updated_at":"2026-07-24T02:05:00Z"}