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The Structural Organization Of Photosystem Ii Polypeptides., William Robert Odom
The Structural Organization Of Photosystem Ii Polypeptides., William Robert Odom
LSU Historical Dissertations and Theses
The structural organization of Photosystem II polypeptides has been investigated using the protein crosslinking reagent 1-ethyl-3-(dimethyl-aminopropyl)-carbodiimide (EDC), and a library of mono- and polyclonal antibodies. The first phase of this research was to generate the antibody probes against specific PS II polypeptides. A murine monoclonal antibody, FQC3, was characterized. It recognized the D2 protein of Spinacia oleracea L. The second phase of this research utilized antibodies against D1, D2, CPa-1, CPa-2, Cyt b$\sb{559}$, 33 kDa manganese stabilizing protein (MSP), 24 kDa extrinsic protein, and the 17 kDa extrinsic protein to identify PS II subunits crosslinked by EDC. Several intra-complex crosslinked …
Effects Of Propiconazole On Morphology, Development, And Epidemiology Of Rhizoctonia Solani, Causal Agent Of Rice Sheath Blight., Elly M. Van Eeckhout
Effects Of Propiconazole On Morphology, Development, And Epidemiology Of Rhizoctonia Solani, Causal Agent Of Rice Sheath Blight., Elly M. Van Eeckhout
LSU Historical Dissertations and Theses
Propiconazole was inhibitory to mycelial growth of Rhizoctonia solani in vitro. Sclerotial weight per colony was also reduced by propiconazole treatment but, in relation to total amount of mycelium, sclerotia formed earlier in 1 to 10 $\mu$g/ml plates than in control plates. Colony diameters from germinating sclerotia obtained from cultures growing at 0.5 to 10 $\mu$g/ml, were significantly greater than those of control colonies. Prolonged inhibitor activity resulted in increased branching, swollen or strongly tapered hyphal tips, formation of 'beaded' hyphae, and rupturing of hyphal walls when intrahyphal hyphae emerged. Abnormal fluorescent patches, representative of abnormal cell wall deposition, were …
Systematics Of Rudbeckia Subgenera Macrocline And Laciniata (Asteraceae: Heliantheae: Rudbeckiinae)., Patricia Blackwell Cox
Systematics Of Rudbeckia Subgenera Macrocline And Laciniata (Asteraceae: Heliantheae: Rudbeckiinae)., Patricia Blackwell Cox
LSU Historical Dissertations and Theses
Rudbeckia, a North American genus, consists of approximately 21 species of annual and perennial herbs. Rudbeckia is separated into three subgenera (i.e. Laciniata (n = 19 (18)), Macrocline (n = 18) and Rudbeckia (n = 19)) based on morphological, cytological, chemical, and phylogenetic data. The present research includes a systematic study of subgenera Laciniata and Macrocline. Also included is a phylogenetic analysis of the coneflower genera (Dracopis, Echinacea, Ratibida, and Rudbeckia). Subgenus Laciniata contains Rudbeckia laciniata, which is composed of five morphological and geographical overlapping varieties. These include var. ampla, var. bipinnata, var. digitata, var. heterophylla, and var. laciniata. Twelve …
Comparative Inflorescence And Floral Development In The Asteraceae. (Volumes I And Ii)., Elizabeth M. Harris
Comparative Inflorescence And Floral Development In The Asteraceae. (Volumes I And Ii)., Elizabeth M. Harris
LSU Historical Dissertations and Theses
Floral and inflorescence development of 39 species of Asteraceae and four additional species representing possible outgroups were examined with the scanning electron microscope (SEM). Taxon choice was designed to include representatives of 12 of the 12 to 18 tribes recognized in the large, morphologically diverse family. Although floral ontogeny has provided phylogenetically useful characters in other plant groups, no similar studies have been applied to solve phylogenetic problems in the Asteraceae. The necessary live material was collected in several ways: from natural populations throughout North America, from the worldwide collections of several botanical gardens, grown from seed, or from cultivated …