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Full-Text Articles in Life Sciences
The Evolution And Development Of Awns In The Grass Subfamily Pooideae, Erin L. Patterson
The Evolution And Development Of Awns In The Grass Subfamily Pooideae, Erin L. Patterson
Doctoral Dissertations
This research focuses on a specific example of replicated evolution: the grass awn. Awns are typically extensions of the lemma, but may also appear on glumes or paleas. The lemma is a leaf-like organ on the exterior of the grass flower, the glumes are a pair of bracts subtending the basic unit of grass inflorescences, the spikelet, and the palea is the floral organ opposite the lemma. Awns are often described as "hair-" or "bristle-" like, but appear in many different shapes. Many awns are “twisted & geniculate", in which the awn has two sections, a lower twisted column, and …
Genetic And Environmental Regulation Of Plant Growth, Kirk J-M Mackinnon
Genetic And Environmental Regulation Of Plant Growth, Kirk J-M Mackinnon
Doctoral Dissertations
Field grown crops are continually exposed to a variety of external stimuli that influence plant responses. Light, temperature, and water availability interact to affect many economically important traits including growth rate, size, and lifespan. My research is focused on the intersection of genetic and environmental factors influencing plant growth. Specifically, I am interested in elucidating the regulation of rhythmic genes in response to photo- and thermocycles and identifying novel candidate genes associated with growth and drought traits. Understanding the gene regulatory networks that mediate time-of-day signaling is vital to identifying candidate genes across the pan-genome associated with traits of interest.
Brachypodium Distachyon Gnrf, Swam1 And Swam4 Are Transcriptional Regulators Of Secondary Cell Wall Biosynthesis, Sandra Romero-Gamboa
Brachypodium Distachyon Gnrf, Swam1 And Swam4 Are Transcriptional Regulators Of Secondary Cell Wall Biosynthesis, Sandra Romero-Gamboa
Doctoral Dissertations
Plant cell walls are complex structures that contain a matrix of cellulose, lignin and hemicellulose. The regulation of the biosynthesis of these components has been well-studied in the eudicot plant Arabidopsis thaliana, and a transcriptional network has been elucidated. Several NAC and MYB family transcription factors are key regulators of secondary cell wall biosynthesis, and their functional characterization provides significant insight into the complex underlying transcriptional network. Genetic and structural evidence suggests that genes controlling this process might be different between eudicots and monocots. Here, the model grass Brachypodium distachyon has been selected to characterize the function of GNRF …
Thermocycle-Regulated Wall Regulator Interacting Bhlh Encodes A Protein That Interacts With Secondary-Cell-Wall-Associated Transcription Factors, Ian P. Whitney
Thermocycle-Regulated Wall Regulator Interacting Bhlh Encodes A Protein That Interacts With Secondary-Cell-Wall-Associated Transcription Factors, Ian P. Whitney
Masters Theses
Lignocellulosic biomass is one of the most abundant raw materials on earth that can be utilized to created carbon-neutral biofuels as a replacement for conventional fossil fuels. In order to create ideal energy crops, the regulation and deposition of cell wall polysaccharides must first be fully understood. Improved understanding of cell wall regulation will enable selection of traits that can optimize biofuel feedstocks. Herein, I utilize the grass model system Brachypodium distachyon in order to understand the transcriptional regulation of secondary cell wall deposition. Gene expression profiling was used to elucidate transcription factors that regulate secondary cell wall biosynthesis. Through …
Rhythmic Growth And Vascular Development In Brachypodium Distachyon, Dominick A. Matos
Rhythmic Growth And Vascular Development In Brachypodium Distachyon, Dominick A. Matos
Masters Theses 1911 - February 2014
Plants reduce inorganic carbon to synthesize biomass that is comprised of mostly polysaccharides and lignin. Growth is intricately regulated by external cues such as light, temperature, and water availability and internal cues including those generated by the circadian clock. While many aspects of polymer biosynthesis are known, their regulation and distribution within the stem are poorly understood. Plant biomass is perhaps the most abundant organic substance on Earth and can be used as feedstock for energy production. Various grass species are under development as energy crops yet several of their attributes make them challenging research subjects. Brachypodium distachyon has emerged …