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Genetic And Mirna Transcriptomic Analysis Of Autoregulation Of Nodulation Signaling In Medicago Truncatula, Diptee Chauligain

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Legumes can source nitrogen from the air through biological nitrogen fixation inside root nodules formed in a symbiosis with rhizobia. A complex root-to-shoot-to-root signaling pathway called Autoregulation of Nodulation (AON) controls the number of nodules formed depending on the plant’s nitrogen requirements. In Medicago truncatula, the MtSUNN receptor complex in the shoot binds to the root-generated AON signals, peptides called MtCLEs, resulting in downregulation of miR2111 expression in the shoot, with the effect of decreased transport of miR2111 to the roots. Decreased miR2111 levels in the roots then cause an increase in transcript levels of the miR2111 targets MtTML1 …

Development And Evaluation Of An Automated Linear Move Fertigation System For Cotton Using Active Remote Sensing, Stewart Bell

All Theses

Optimum nitrogen (N) application is essential to the economic and environmental sustainability of cotton production. Variable-rate N fertigation could potentially help farmers optimize N applications, but current overhead irrigation systems normally lack automated site-specific variable-rate fertigation capabilities. The objective of this research was to develop and evaluate an automated variable-rate N fertigation system based on real-time Normalized Difference Vegetation Index (NDVI) measurements from crop sensors integrated with a lateral move irrigation system. For this purpose, NDVI crop sensors and a flow meter were integrated with Arduino microcontrollers and an automated fertigation system was constructed. A computer program was developed to …

Uav-Assisted Water Quality Monitoring, Cengiz Koparan

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Water quality assessment for the management of water resources requires the collection of water samples for physical, chemical, and biological analysis. It is essential to reduce the cost of water quality monitoring by minimizing the number of grab samples and to reduce the sampling time by rapidly accessing the sampling points. Adaptive, remote, and smart water sampling systems can provide more effective water quality monitoring programs. An adaptive water sampling system with an unmanned aerial vehicle integrated with sensor nodes was developed and tested in this research. Individual phases of this research were; in-situ water quality measurements with a UAV-integrated …

Habitat Features And Behavioral Plasticity Promote Barred Owl Presence In Developed Landscapes, Marion Alice Clement

All Theses

Despite extensive accounts in the literature describing Barred Owls (Strix varia) as obligate forest-interior species that are sensitive to development, Barred Owls have increasingly been found in urbanized landscapes. Due to the limited number of studies on Barred Owls within the context of development, our understanding of the processes that facilitate Barred Owls within anthropogenic landscapes is limited. In the Piedmont region of the southeastern United States, South Carolina, the presence of Barred Owls in suburbs and small-town centers precipitated our research team to examine which habitat features facilitate their occurrence near development.

We conducted surveys using callbacks and autonomous …