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Articles 1 - 8 of 8
Full-Text Articles in Life Sciences
Seasonal Variation In Mitochondrial Bioenergetics Of The Bluegill Sunfish, Lepomis Macrochirus, From A Shallow Midwest River, Derick Isaac Lamptey
Seasonal Variation In Mitochondrial Bioenergetics Of The Bluegill Sunfish, Lepomis Macrochirus, From A Shallow Midwest River, Derick Isaac Lamptey
Masters Theses
As average global temperature increase, the frequency and magnitude of extreme temperatures in shallow aquatic ecosystems are more ubiquitous. In order to understand how these changing thermal regimes affect aquatic ectotherms, it is essential to develop studies evaluating the response of ectotherms to seasonal fluctuating thermal regimes. Previous studies on fluctuating temperature regimes have reported an increased physiological stress leading to morphological, behavioral and biochemical adaptations. From the latter, the adaptive capacity and seasonal performance associated with optimal function of the oxidative phosphorylation system (OXPHOS) are key for species persistence. However, studies on this matter are scarce. This study explores …
Comparison Of An Electron Transport System (Ets) Enzyme-Mediated Reduction Assay And Respiration Rate Of The Invasive Copepod Eurytemora Carolleeae In Green Bay, Wi, Usa, Alexander Timpe
Lawrence University Honors Projects
The use of aquatic resources for agriculture, trade, and recreation adds stress to water-dwelling organisms. Rapid changes in abiotic conditions, such as warming due to climate change and nutrient loading from agricultural runoff and urban areas, threaten to induce profound alterations to aquatic environments. These changes affect interspecific community interactions and may cause an aquatic resource to lose its functionality that is valuable to humans. Studying organisms such as plankton that form an ecosystem’s foundation is an important step towards understanding the entire food web and predicting how it may or may not be able to respond to a changing …
Phylogenetic Placement, Floral Anatomy, And Morphological Characterization Of The North African Pastoral Halophyte Atriplex Mollis Desf. (Amaranthaceae), Abderrazak Tlili, Imed Sbissi, Faycal Boughalleb, Hassen Gouja, Teresa Garnatje, Joan Vallès, Mohamed Neffati
Phylogenetic Placement, Floral Anatomy, And Morphological Characterization Of The North African Pastoral Halophyte Atriplex Mollis Desf. (Amaranthaceae), Abderrazak Tlili, Imed Sbissi, Faycal Boughalleb, Hassen Gouja, Teresa Garnatje, Joan Vallès, Mohamed Neffati
Turkish Journal of Botany
Atriplex mollis Desf. (Amaranthaceae), a North African endemic halophytic species, is further described in this study. Phylogenetic analysis based on a combined dataset of ITS and ETS rDNA and atpB-rbcL and trnK cpDNA showed that A. mollis is closely related to the Malta- and Gozo-endemic Cremnophyton lanfrancoi Brullo & Pavone. Given this close phylogenetic relationship, A. mollis is also considered among the oldest species of Atriplex, together with C. lanfrancoi. Molecular data also suggest that A. mollis in North Africa, C. lanfrancoi on Malta Island, and Atriplex cana Ledeb.in Eurasian semideserts constitute a separate clade within the tribe Atripliceae. As …
New Circumspection Of The Genus Gamochaeta (Asteraceae, Gnaphalieae) Inferred From Nuclear And Plastid Dna Sequences, Estrella Urtubey, Alicia López, María A. Chemisquy, Arne A. Anderberg, Carlos M. Baeza, Néstor D. Bayón, Leonardo P. Deble, Andrés Moreira-Muñoz, Guy L. Nesom, Mac H. Alford, Luciana Salomón, Susana E. Freire
New Circumspection Of The Genus Gamochaeta (Asteraceae, Gnaphalieae) Inferred From Nuclear And Plastid Dna Sequences, Estrella Urtubey, Alicia López, María A. Chemisquy, Arne A. Anderberg, Carlos M. Baeza, Néstor D. Bayón, Leonardo P. Deble, Andrés Moreira-Muñoz, Guy L. Nesom, Mac H. Alford, Luciana Salomón, Susana E. Freire
Faculty Publications
Gamochaeta (tribe Gnaphalieae, Asteraceae) is composed of ca. 60 species primarily distributed in tropical and subtropical America. Within the tribe Gnaphalieae, the genus is characterized by capitula arranged in spikes or head-like clusters, few hermaphroditic central florets, truncate style branches with apical sweeping trichomes, pappus bristles connate at the base into a ring falling as a unit, and achenes with globose twin trichomes. Previous molecular phylogenetic studies have suggested the paraphyly of the genus, but have not provided a basis for redefining generic limits due to incomplete taxon sampling. To address this problem, DNA sequences from the plastid (trn …
A Taxonomic Study Of The Genus Hellenocarum H.Wolff (Umbelliferae-Apioideae)Based On Morphology, Fruit Anatomy, And Molecular Data, Ekaterina Andreevna Zakharova, Eugene Vasilyevich Kljuykov, Galina Viktorovna Degtjareva, Tahir Samigullin, Uliana Alekseevna Ukrainskaya, Stephen R. Downie
A Taxonomic Study Of The Genus Hellenocarum H.Wolff (Umbelliferae-Apioideae)Based On Morphology, Fruit Anatomy, And Molecular Data, Ekaterina Andreevna Zakharova, Eugene Vasilyevich Kljuykov, Galina Viktorovna Degtjareva, Tahir Samigullin, Uliana Alekseevna Ukrainskaya, Stephen R. Downie
Turkish Journal of Botany
Phylogenetic relationships among the species of Hellenocarum and its close allies (Umbelliferae-Apioideae) were investigated using nuclear (ITS, ETS) and plastid (psbA-trnH intergenic spacer) DNA sequences. The results obtained were supplemented with an examination of morphology from herbarium and field-collected materials, as well as details of fruit anatomy obtained from light and scanning electron microscopy. According to the molecular data, Hellenocarum is not monophyletic. In most molecular analyses, the genus comprises 2 disparate lineages, with each lineage supported by distinct morphological characters (e.g., structure of underground organs, shape of the umbel, petal color). The first lineage includes Hellenocarum multiflorum (the type …
Life Cycle Versus Systematic Placement: Phylogenetic And Cytogenetic Studies In Annual Artemisia (Asteraceae, Anthemideae), Jaume Pellicer, Oriane Hidalgo, Teresa Garnatje, Katsuhiko Kondo, Joan Vallès
Life Cycle Versus Systematic Placement: Phylogenetic And Cytogenetic Studies In Annual Artemisia (Asteraceae, Anthemideae), Jaume Pellicer, Oriane Hidalgo, Teresa Garnatje, Katsuhiko Kondo, Joan Vallès
Turkish Journal of Botany
Artemisia L. comprises ca. 20 annual species out of ca. 500, which are distributed mainly across the Old World grades, accounting for multiple independent acquisitions of annual habit throughout the evolutionary history of the genus. This makes Artemisia an interesting subject for the study of plant life cycle evolution in a phylogenetic context and its consequences at genomic level. The main aim of this phylogenetic analysis was to circumscribe 17 of the annual representatives within the major lineages of Artemisia. Genome size has been assessed and ancestral values reconstructed on the tree. Fluorescent in situ hybridisation (FISH) has also been …
Phylogeny, Geographic Distribution, And New Taxonomic Circumscription Of The Crocus Reticulatus Species Group (Iridaceae), Dörte Harpke, Lorenzo Peruzzi, Helmut Kerndorff, Theophanis Karamplianis, Theophanis Constantinidis, Vladimir Randelovic, Novica Randelovic, Marina Juskovic, Erich Pasche, Frank R. Blattner
Phylogeny, Geographic Distribution, And New Taxonomic Circumscription Of The Crocus Reticulatus Species Group (Iridaceae), Dörte Harpke, Lorenzo Peruzzi, Helmut Kerndorff, Theophanis Karamplianis, Theophanis Constantinidis, Vladimir Randelovic, Novica Randelovic, Marina Juskovic, Erich Pasche, Frank R. Blattner
Turkish Journal of Botany
Recent phylogenetic analyses proved several infrageneric units within the genus Crocus to be para- or polyphyletic. In an attempt to arrive at a system of Crocus that closely reflects species relationships, we provide here phylogenetic, morphometric, geographic, and nomenclatorial data for the species of a narrower-defined, monophyletic Crocus series Reticulati. We sequenced the ETS and ITS regions of the nuclear ribosomal DNA in 9 Reticulati and 19 outgroup species. Three chloroplast loci (trnL-F, rps16-trnQ, matK-trnK) were sequenced in the newly defined series Reticulati species and 1 outgroup. Data were analyzed with Bayesian and parsimony algorithms. The phylogenies resulted in 2 …
Polyomavirus Enhancer Activator 3 (Pea3), A Member Of The Ets Family Of Transcription Factors, Is A Transcriptional Activator Of Notch-1 And Notch-4 In Breast Cancer: An Opportunity For Novel Combinational Therapy, Anthony George Clementz
Polyomavirus Enhancer Activator 3 (Pea3), A Member Of The Ets Family Of Transcription Factors, Is A Transcriptional Activator Of Notch-1 And Notch-4 In Breast Cancer: An Opportunity For Novel Combinational Therapy, Anthony George Clementz
Dissertations
Women diagnosed with triple-negative breast cancer have the worst overall prognosis and frequently present with metastatic tumors. To date, there are no targeted therapies available to combat this aggressive form of breast cancer due to the lack of expression of well-known targets such as ER-alpha, PR, or HER2/neu. Therefore, there is an immediate need to identify novel targets that are responsible for the proliferation, survival, and invasive phenotype. Notch-1 and Notch-4, both potent breast oncogenes, are overexpressed in triple-negative breast cancers-associated with the poorest overall survival. PEA3 (polyomavirus enhancer activator 3), a member of the Ets family of transcription factors, …