The Experts below are selected from a list of 60 Experts worldwide ranked by ideXlab platform
James V Groth - One of the best experts on this subject based on the ideXlab platform.
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effects of elevated co2 nitrogen deposition and decreased species diversity on foliar Fungal Plant Disease
Global Change Biology, 2003Co-Authors: Charles E Mitchell, Peter B Reich, David Tilman, James V GrothAbstract:Three components of global change, elevated CO2, nitrogen addition, and decreased Plant species richness (‘diversity’), increased the percent leaf area infected by fungi (pathogen load) for much to all of the Plant community in one year of a factorial grassland experiment. Decreased Plant diversity had the broadest effect, increasing pathogen load across the Plant community. Decreased diversity increased pathogen load primarily by allowing remaining Plant species to increase in abundance, facilitating spread of foliar Fungal pathogens specific to each Plant species. Changes in Plant species composition also strongly influenced community pathogen load, with communities that lost less Disease prone Plant species increasing more in pathogen load. Elevated CO2 increased pathogen load of C3 grasses, perhaps by decreasing water stress, increasing leaf longevity, and increasing photosynthetic rate, all of which can promote foliar Fungal Disease. Decreased Plant diversity further magnified the increase in C3 grass pathogen load under elevated CO2. Nitrogen addition increased pathogen load of C4 grasses by increasing foliar nitrogen concentration, which can enhance pathogen infection, growth, and reproduction. Because changes in foliar Fungal pathogen load can strongly influence grassland ecosystem processes, our study suggests that increased pathogen load can be an important mechanism by which global change affects grassland ecosystems.
Charles E Mitchell - One of the best experts on this subject based on the ideXlab platform.
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effects of elevated co2 nitrogen deposition and decreased species diversity on foliar Fungal Plant Disease
Global Change Biology, 2003Co-Authors: Charles E Mitchell, Peter B Reich, David Tilman, James V GrothAbstract:Three components of global change, elevated CO2, nitrogen addition, and decreased Plant species richness (‘diversity’), increased the percent leaf area infected by fungi (pathogen load) for much to all of the Plant community in one year of a factorial grassland experiment. Decreased Plant diversity had the broadest effect, increasing pathogen load across the Plant community. Decreased diversity increased pathogen load primarily by allowing remaining Plant species to increase in abundance, facilitating spread of foliar Fungal pathogens specific to each Plant species. Changes in Plant species composition also strongly influenced community pathogen load, with communities that lost less Disease prone Plant species increasing more in pathogen load. Elevated CO2 increased pathogen load of C3 grasses, perhaps by decreasing water stress, increasing leaf longevity, and increasing photosynthetic rate, all of which can promote foliar Fungal Disease. Decreased Plant diversity further magnified the increase in C3 grass pathogen load under elevated CO2. Nitrogen addition increased pathogen load of C4 grasses by increasing foliar nitrogen concentration, which can enhance pathogen infection, growth, and reproduction. Because changes in foliar Fungal pathogen load can strongly influence grassland ecosystem processes, our study suggests that increased pathogen load can be an important mechanism by which global change affects grassland ecosystems.
Pintip Ruenwongsa - One of the best experts on this subject based on the ideXlab platform.
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Yeast Biocontrol of a Fungal Plant Disease: A Model for Studying Organism Interrelationships.
Journal of Biological Education, 2008Co-Authors: Arun Chanchaichaovivat, Bhinyo Panijpan, Pintip RuenwongsaAbstract:An experiment on the action of the yeast, Saccharomyces cerevisiae, against a Fungal Plant Disease is proposed for secondary students (Grade 11) to support their study of organism interrelationship. This biocontrol experiment serves as the basis for discussing relationships among three organisms (red chilli fruit, Saccharomyces cerevisiae, and Botrytis cinerea). Students have the opportunity to observe the different types of cell structure and function of these organisms. The ability of the yeast to control mould growth was detected by in vitro and in vivo tests. Competition for nutrients (glucose and fructose) between yeast and mould were also demonstrated. In addition to cognitive learning, this simple experiment can provide manipulative skills for students' further investigation in their science projects and later in higher education.
Peter B Reich - One of the best experts on this subject based on the ideXlab platform.
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effects of elevated co2 nitrogen deposition and decreased species diversity on foliar Fungal Plant Disease
Global Change Biology, 2003Co-Authors: Charles E Mitchell, Peter B Reich, David Tilman, James V GrothAbstract:Three components of global change, elevated CO2, nitrogen addition, and decreased Plant species richness (‘diversity’), increased the percent leaf area infected by fungi (pathogen load) for much to all of the Plant community in one year of a factorial grassland experiment. Decreased Plant diversity had the broadest effect, increasing pathogen load across the Plant community. Decreased diversity increased pathogen load primarily by allowing remaining Plant species to increase in abundance, facilitating spread of foliar Fungal pathogens specific to each Plant species. Changes in Plant species composition also strongly influenced community pathogen load, with communities that lost less Disease prone Plant species increasing more in pathogen load. Elevated CO2 increased pathogen load of C3 grasses, perhaps by decreasing water stress, increasing leaf longevity, and increasing photosynthetic rate, all of which can promote foliar Fungal Disease. Decreased Plant diversity further magnified the increase in C3 grass pathogen load under elevated CO2. Nitrogen addition increased pathogen load of C4 grasses by increasing foliar nitrogen concentration, which can enhance pathogen infection, growth, and reproduction. Because changes in foliar Fungal pathogen load can strongly influence grassland ecosystem processes, our study suggests that increased pathogen load can be an important mechanism by which global change affects grassland ecosystems.
David Tilman - One of the best experts on this subject based on the ideXlab platform.
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effects of elevated co2 nitrogen deposition and decreased species diversity on foliar Fungal Plant Disease
Global Change Biology, 2003Co-Authors: Charles E Mitchell, Peter B Reich, David Tilman, James V GrothAbstract:Three components of global change, elevated CO2, nitrogen addition, and decreased Plant species richness (‘diversity’), increased the percent leaf area infected by fungi (pathogen load) for much to all of the Plant community in one year of a factorial grassland experiment. Decreased Plant diversity had the broadest effect, increasing pathogen load across the Plant community. Decreased diversity increased pathogen load primarily by allowing remaining Plant species to increase in abundance, facilitating spread of foliar Fungal pathogens specific to each Plant species. Changes in Plant species composition also strongly influenced community pathogen load, with communities that lost less Disease prone Plant species increasing more in pathogen load. Elevated CO2 increased pathogen load of C3 grasses, perhaps by decreasing water stress, increasing leaf longevity, and increasing photosynthetic rate, all of which can promote foliar Fungal Disease. Decreased Plant diversity further magnified the increase in C3 grass pathogen load under elevated CO2. Nitrogen addition increased pathogen load of C4 grasses by increasing foliar nitrogen concentration, which can enhance pathogen infection, growth, and reproduction. Because changes in foliar Fungal pathogen load can strongly influence grassland ecosystem processes, our study suggests that increased pathogen load can be an important mechanism by which global change affects grassland ecosystems.
