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The Use Of Biological Soil Health Indicators To Quantify The Benefits Of Cover Crops, Alexander Wu
The Use Of Biological Soil Health Indicators To Quantify The Benefits Of Cover Crops, Alexander Wu
Masters Theses
Soils provide many essential functions that support the world. With a decline in soil health, these functions also decrease in efficiency, and can threaten the health of billions of people around the world. Typically, soil health tests do not use biological indicators, however microbes drive and perform vital functions to increase soil health. One way to increase soil health is through the use of cover crops to reduce soil erosion during fallow periods, increasing soil organic matter, as well as collecting nutrients from soil into their biomass. These cover crops are then terminated through various methods such as herbicides, disk …
Modulation Of Plant Immunity During The Establishment Of The Nitrogen-Fixing Symbiosis, Miriam Hernandez-Romero
Modulation Of Plant Immunity During The Establishment Of The Nitrogen-Fixing Symbiosis, Miriam Hernandez-Romero
Doctoral Dissertations
Nitrogen is essential for plant tissue growth but is often a limited resource in soils. Many legumes overcome this limitation by entering a symbiotic association with soil microbes, called rhizobia, which provide nitrogen to the plant while rhizobia receive fixed carbon. To successfully form a symbiosis, the host and symbiont exchange a series of molecular signals. One major obstacle during this interaction is the host's innate immune system, which becomes active upon rhizobial detection. It is therefore the main focus of this thesis to identify the mechanisms that modulate host immunity. In the subsequent chapters, we focus on a rhizobial …