North American Invasive Plant Ecology and Management

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North American Invasive Plant Ecology and Management

Lessons

Appearance of Herbicide Resistance in a Weed Population Through the repeated use of the same herbicide, weed populations can consist of susceptible (S)-biotypes that are controlled and herbicide resistant (R)-biotypes that are left behind to produce and return seed with the resistance characteristic back into the soil. This lesson will highlight the population dynamics of a mixed weed population, containing S- and R-biotypes, and compare and contrast the rate at which herbicide resistant weeds appear in a population under a diversity of selection pressures. ****** This lesson will highlight the population dynamics of a mixed (herbicide susceptible and resistant biotype) weed population, and compare and contrast the rate of appearance of herbicide resistance in a mixed population under a diversity of selection pressures.
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Auxin and Auxinic Herbicide Mechanism(s) of Action - Part 1 - Introduction The selective control of broadleaf weeds in cereal grain crops by auxinic herbicides has made this group one of the most widespread and important herbicide families in use. These herbicides were the f...
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Auxin and Auxinic Herbicide Mechanism(s) of Action - Part 2 - Advanced The selective control of broadleaf weeds in cereal grain crops by auxinic herbicides has made this group one of the most widespread and important herbicide families in use. These herbicides are thoug...
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Herbicide Discovery and Screening Historically, herbicides have been discovered by randomly screening collections of chemicals for activity on target weeds. While totally empirical, this approach has been surprisingly successful and ...
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Herbicide Resistance: Mechanisms, Inheritance, and Molecular Genetics This lesson will detail the biochemical mechanisms and genetics of herbicide resistance in weeds. Herbicide resistance is one of the major issues in weed science today; therefore, it is important to h...
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Inhibitors of Aromatic Amino Acid Biosynthesis This lesson will detail the biochemical mechanisms that are affected by herbicides which inhibit a plant’s ability to synthesize amino acids. The significance of amino acids and proteins will also b...
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Inhibitors of Branched Chain Amino Acid Biosynthesis Herbicides that inhibit the production of the branched chain amino acids valine, leucine and isoleucine are used for total vegetation management and selective weed control in a wide variety of crops....
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Inhibitors of Fatty Acid Synthesis and Elongation Fatty acid synthesis and fatty acid elongation are two parts of a critically important pathway in plants. The endproducts are essential components of cell membranes, waxes, and suberin. Two chemical f...
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Metabolism of Herbicides or Xenobiotics in Plants This lesson will take an indepth view of how plants handle foreign chemicals (xenobiotics) such as herbicides. It will discuss the three main phases that plants use to handle toxic chemicals, which en...
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Total: 9

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This project was supported in part by the National Research Initiative Competitive Grants CAP project 2011-68002-30029 from the USDA National Institute of Food and Agriculture, adminstered by the University of California-Davis and by the National Science Foundation (NSF), Division of Undergraduate Education, National SMETE Digital Library Program, Award #0938034, administered by the University of Nebraska. Any opinions, findings, conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the USDA or NSF.

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