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Glucose-Mediated Catabolite Repression In Sinorhizobium Meliloti, Emily R. Murnin 2017 University of Redlands

Glucose-Mediated Catabolite Repression In Sinorhizobium Meliloti, Emily R. Murnin

Undergraduate Honors Theses

Abstract:

Alfalfa plants and the bacteria Sinorhizobium meliloti interact in a symbiotic relationship in which the alfalfa plant receives a usable form of nitrogen, ammonia, to use as a fertilizer, while the bacteria receive a carbon and energy source from the plant roots. During this exchange, there is formation of a root nodule, and these bacteria are implanted inside the alfalfa root cells. To convert the nitrogen by the process of nitrogen fixation for the alfalfa plant, Sinorhizobium meliloti requires a great deal of energy. To conserve the energy that it has, this bacterium performs what is known as catabolite ...


A Preliminary Study On The Role Of Enhancer Of Flavonoid Production (Efp) In Flavonoid Biosynthesis, Jia Guo 2016 University of Connecticut

A Preliminary Study On The Role Of Enhancer Of Flavonoid Production (Efp) In Flavonoid Biosynthesis, Jia Guo

Honors Scholar Theses

Flavonoids are involved in a variety of biological roles ranging from pathogen protection, pigment intensity, antioxidant effects, and even prevention from cancer or cardiovascular diseases. Because of the diverse and beneficial functions that flavonoids have, the flavonoid biosynthetic pathway has been well studied. Recently, a gene called the Enhancer of Flavonoid Production (EFP) was discovered when mutations in this gene caused the Japanese morning glory flowers to exhibit a pale-colored phenotype. Although EFP is known to increase flavonoid production, the direct mechanism to how EFP enhances enzymes in the flavonoid biosynthetic pathway has yet to be discovered. It has been ...


Mechanisms Of Adaptation In The Newly Invasive Species Brachypodium Sylvaticum (Hudson) Beauv., Gina Lola Marchini 2015 Portland State University

Mechanisms Of Adaptation In The Newly Invasive Species Brachypodium Sylvaticum (Hudson) Beauv., Gina Lola Marchini

Dissertations and Theses

It is common knowledge that invasive species cause worldwide ecological and economic damage, and are nearly impossible to eradicate. However, upon introduction to a novel environment, alien species should be the underdogs: They are present in small numbers, possess low genetic diversity, and have not adapted to the climate and competitors present in the new habitat. So, how are alien species able to invade an environment occupied by native species that have already adapted to the local environment? To discover some answers to this apparent paradox I conducted four ecological genetic studies that utilized the invasive species Brachypodium sylvaticum (Hudson ...


Anti-Tb And Antibacterial Activities Of Natural Products Extracts, Douglas Armstrong, Nathan Krause, Drew Frey 2015 Olivet Nazarene University

Anti-Tb And Antibacterial Activities Of Natural Products Extracts, Douglas Armstrong, Nathan Krause, Drew Frey

Faculty Scholarship – Chemistry

Samples of numerous plant species were received from the southwestern part of the USA from Richard Spjut, and plant samples were collected here in Illinois. All were extracted with typical solvents, giving crude residues, some of which were subjected to counter-current or flash chromatographic methods. Some of the crude extracts and chromatographic fractions had anti-tuberculosis and/or antibacterial activity.

In a general way, bioactive natural products are dealt with very well by Liang & Fang, 2006. More specifically, the southwestern part of the United States has a large variety of indigenous plants, many of which have not been investigated for their ...


The Presence And Functionality Of Ammonia Oxidizing Bacteria In The Constructed Treatment Wetland At The John Heinz National Wildlife Refuge, Keith Lewy 2015 University of Pennsylvania

The Presence And Functionality Of Ammonia Oxidizing Bacteria In The Constructed Treatment Wetland At The John Heinz National Wildlife Refuge, Keith Lewy

Master of Environmental Studies Capstone Projects

The vast majority of research done on constructed treatment wetlands (CTWs) has focused on outdoor installations, with little work done on indoor systems. Previous work on the indoor CTW at the John Heinz National Wildlife Refuge focused on whether the lack of floral diversity in the system would negatively impact its ability to remove various chemical parameters, but despite their great importance in bioremediation the microbial communities in these CTWs have never been studied. In this study, the presence and functionality of ammonia oxidizing bacteria was examined in various points of the treatment system using both culture-dependent and culture-independent DNA-based ...


The Effect Of Pomegranate Juice Extract On The Hedgehog Signaling Pathway In Pancreatic Cancer, Veronica Gomez, Talia Shackelford, Autumn Tocchi, Melissa Rowland-Goldsmith 2014 Chapman University

The Effect Of Pomegranate Juice Extract On The Hedgehog Signaling Pathway In Pancreatic Cancer, Veronica Gomez, Talia Shackelford, Autumn Tocchi, Melissa Rowland-Goldsmith

e-Research: A Journal of Undergraduate Work

Pancreatic cancer is the fourth leading cause of cancer death in the United States. There have been several reports indicating that phytochemicals in fruits can reduce the risk of cancer due to the anti-oxidant and anti-inflammatory effects of the polyphenols. Our lab has shown that pomegranate juice extract (PJE) has anti-proliferative and pro-apoptotic effects in human pancreatic cancer cells. In the past, we have shown that cells adhere more strongly to the plate when treated with PJE. This observation prompted an investigation of how PJE regulates cell adhesion proteins. Previously, our lab investigated E-cadherin, a cell adhesion protein. Upon activation ...


The Effects That Liquid And Solid Cattle Manure Have On The Water Quality Of Drainage Ditches In Putnam County, Ohio, Janelle Horstman 2014 Bowling Green State University

The Effects That Liquid And Solid Cattle Manure Have On The Water Quality Of Drainage Ditches In Putnam County, Ohio, Janelle Horstman

Honors Projects

Lake Erie has experienced harmful algal blooms with increased frequency since the mid-1990s due to excess nutrients from Rivers, such as the Maumee River, and largely agricultural watersheds. Nonpoint source pollution from agriculture contributes to eutrophication, algal blooms, and the degradation of water quality. This creates stress on aquatic fauna, reduced aesthetic quality, odor, and limits of the water for usage of drinking, recreation, and industry. This research paper asks what the contributions of having access to manure application records, soil records, and information about antibiotics have on what is known about manure management and antibiotic resistance, which has been ...


Phytochemistry And Pharmacology Of Plants From The Ginger Family, Zingiberaceae, Hans Wohlmuth 2013 Southern Cross University

Phytochemistry And Pharmacology Of Plants From The Ginger Family, Zingiberaceae, Hans Wohlmuth

Dr Hans Wohlmuth

This thesis reports on a series of investigations into the phytochemistry and pharmacology of plants belonging to the ginger family, Zingiberaceae (incl. Costaceae). The work falls into two main parts. The first part examines the pungent compounds and essential oil in 17 clones of ginger (Zingiber officinale) with a view to identify one or more with unique chemistry and consequent particular therapeutic (or flavouring) prospects. The second part comprises the screening of 41 taxa for inhibition of PGE2 and other biological activities, with the primary aim of identifying species with potential anti-inflammatory activity. This part tested the hypothesis that the ...


A Literature Review Of The Health Effects Of A Plant Based Diet Versus An Animal Based Diet, James Cote 2013 Liberty University

A Literature Review Of The Health Effects Of A Plant Based Diet Versus An Animal Based Diet, James Cote

Senior Honors Theses

Health and nutrition can mean a myriad of things to many people in today’s culture. The majority of the time people are unaware of the proper nutrients their body needs and how to get them from food. This thesis will seek to expose the health benefits that are associated with consuming a raw plant-based die, offering a more profound and encompassing view on nutrition. Investigating further into today’s most common diseases such as diabetes, heart disease, obesity, cancer and autoimmune disorders, it will seek to discover and answer why we have so many health issues. This thesis will ...


Neuroprotective Properties Of Phytoestrogens, Courtney Anne Brock 2012 University of North Texas Health Science Center at Fort Worth

Neuroprotective Properties Of Phytoestrogens, Courtney Anne Brock

Theses and Dissertations

Women make up nearly two thirds of total Alzheimer’s cases in the United States. It has been speculated that the loss of endogenous estradiol during menopause is, at least in part, what renders the post-menopausal brain more vulnerable to the effects of aging and Alzheimer’s Disease. While hormone therapy can potentially thwart some of the undesirable consequences and increased risks associated with menopause, women are increasingly rejecting hormone therapy and seeking alternative therapy. There is a strong in interest in phytoestrogens as an alternative to traditional hormone therapy.

Phytoestrogens are naturally occurring estrogen like compounds derived from plants ...


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