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Full-Text Articles in Physical Sciences and Mathematics

Transcriptional And Antagonistic Responses Of Biocontrol Strain Lysobacter Enzymogenes Oh11 To The Plant Pathogenic Oomycete Pythium Aphanidermatum, Yangyang Zhao, Guoliang Qian, Yuan Chen, Liangcheng Du, Fengquan Liu Jan 2017

Transcriptional And Antagonistic Responses Of Biocontrol Strain Lysobacter Enzymogenes Oh11 To The Plant Pathogenic Oomycete Pythium Aphanidermatum, Yangyang Zhao, Guoliang Qian, Yuan Chen, Liangcheng Du, Fengquan Liu

Chemistry Department: Faculty Publications

Lysobacter enzymogenes is a ubiquitous, beneficial, plant-associated bacterium emerging as a novel biological control agent. It has the potential to become a new source of antimicrobial secondary metabolites such as the Heat-Stable Antifungal Factor (HSAF), which is a broad-spectrum antimycotic with a novel mode of action. However, very little information about how L. enzymogenes detects and responds to fungi or oomycetes has been reported. An in vitro confrontation bioassay between the pathogenic oomycete Pythium aphanidermatum and the biocontrol bacterial strain L. enzymogenes OH11 was used to analyze the transcriptional changes in the bacteria that were induced by the oomycetes. Analysis …


Interactions Of Zooplankton And Phytoplankton With Cyanobacteria, Rebecca Alexander Dec 2012

Interactions Of Zooplankton And Phytoplankton With Cyanobacteria, Rebecca Alexander

School of Natural Resources: Dissertations, Theses, and Student Research

Cyanobacteria are a major concern in Nebraska reservoirs and are capable of producing toxins that can cause skin irritations and gastrointestinal problems, as well as affect the nervous system. It is important to determine the mechanisms that can cause cyanobacteria blooms due to the effect they can have on human health. The interaction of zooplankton and other phytoplankton groups with cyanobacteria is important because there is a biological component in surface waters that should be taken into consideration along with the physical and chemical parameters that have been noted to promote cyanobacteria. For example, zooplankton have the ability to alter …


Interactions Of Zoo Plankton And Phytoplankton With Cyanobacteria, Rebecca J. Alexander Dec 2012

Interactions Of Zoo Plankton And Phytoplankton With Cyanobacteria, Rebecca J. Alexander

School of Natural Resources: Dissertations, Theses, and Student Research

Cyanobacteria are a major concern in Nebraska reservoirs and are capable of producing toxins that can cause skin irritations and gastrointestinal problems, as well as affect the nervous system. It is important to determine the mechanisms that can cause cyanobacteria blooms due to the effect they can have on human health. The interaction of zooplankton and other phytoplankton groups with cyanobacteria is important because there is a biological component in surface waters that should be taken into consideration along with the physical and chemical parameters that have been noted to promote cyanobacteria. For example, zooplankton have the ability to alter …


Applications Of Remote Sensing And Gis To The Studies Of Groundwater-Lake Interactions In The Nebraska Sandhills, Evgueni N. Tcherepanov Oct 2003

Applications Of Remote Sensing And Gis To The Studies Of Groundwater-Lake Interactions In The Nebraska Sandhills, Evgueni N. Tcherepanov

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Bear Behavior In The Vicinity Of Supplemental Feeding Stations In Western Washington, Dale L. Nolte, Timothy J. Veenendaal, Georg J. Ziegltrum, Philipp Fersterer Mar 2001

Bear Behavior In The Vicinity Of Supplemental Feeding Stations In Western Washington, Dale L. Nolte, Timothy J. Veenendaal, Georg J. Ziegltrum, Philipp Fersterer

United States Department of Agriculture Wildlife Services: Staff Publications

Black bear can inflict severe negative Impacts on timber stands in the northwestern United States. A supplemental feeding program to provide bears an alternative food source during spring is practiced in the state of Washington, and to a lesser extent in other states. We initiated concurrent studies to assess characteristics of bear that forage at feeding stations, the interactions of bears around feeders, and impacts of the program on bear territories. Numerous bears fed at stations, including females with and without cubs, yearlings, and males. Bear feeding bouts at stations were generally short, less than 15 minutes. Bears generally fed …


Bear Behavior In The Vicinity Of Supplemental Feeding Stations In Western Washington, Dale L. Nolte, Timothy J. Veenendaal, George J. Ziegltrum, Philipp Fersterer Mar 2001

Bear Behavior In The Vicinity Of Supplemental Feeding Stations In Western Washington, Dale L. Nolte, Timothy J. Veenendaal, George J. Ziegltrum, Philipp Fersterer

United States Department of Agriculture Wildlife Services: Staff Publications

Black bear can inflict severe negative Impacts on timber stands in the northwestern United States. A supplemental feeding program to provide bears an alternative food source during spring is practiced in the stat e of Washington, and to a lesser extent in other states. We initiated concurrent studies to assess characteristics of bear that forage at feeding stations, the interactions of bears around feeders, and impacts of the program on bear territories. Numerous bears fed at stations, including females with and without cubs, yearlings. and males. Bear feeding bouts at stations were generally short, less than 15 minutes. Bears generally …


Interactions Between Plains Pocket Gophers And Two Varieties Of Dryland Alfalfa, James C. Luchsinger May 1990

Interactions Between Plains Pocket Gophers And Two Varieties Of Dryland Alfalfa, James C. Luchsinger

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Interaction Of Maternal Grandsire With Region Of United States And Herd For Calving Ease, Birth Weight And 205-Day Weight, K. J. Hanford, P. J. Burfening, D. D. Kress, Stephen D. Kachman Jan 1988

Interaction Of Maternal Grandsire With Region Of United States And Herd For Calving Ease, Birth Weight And 205-Day Weight, K. J. Hanford, P. J. Burfening, D. D. Kress, Stephen D. Kachman

Department of Statistics: Faculty Publications

Field records supplied by the American Simmental Association from 2-yr-old dams were used to study maternal grandsire • region of the U.S. and maternal grandsire • herd within region (herd/region) interactions. Regions were 1) Montana, North Dakota and South Dakota, 2) Kansas and Nebraska, 3) Texas and Oklahoma and 4) Alabama, Florida, Georgia, Louisiana and Mississippi. Analyses were conducted pairwise with respect to region with the following number of animals in each comparison: 1 (3,964) vs 2 (2,239), 1 (3,996) vs 3 (1,660), 1 (3,418) vs 4 (474), 2 (2,033) vs 3 (1,709), 2 (1,666) vs 4 (443) and 3 …


Interspecific Interactions Of Green Sunfish (Lepomis Cyanellus) And (Creek Chub (Semotilus Atromaculatus) In Small Streams In Southeast Nebraska, Steve L. Schleiger Mar 1986

Interspecific Interactions Of Green Sunfish (Lepomis Cyanellus) And (Creek Chub (Semotilus Atromaculatus) In Small Streams In Southeast Nebraska, Steve L. Schleiger

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Mass And Energy Exchanges Of Soybeans: Microclimate-Plant Architectural Interactions, Dennis D. Baldocchi Nov 1982

Mass And Energy Exchanges Of Soybeans: Microclimate-Plant Architectural Interactions, Dennis D. Baldocchi

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.