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Articles 31 - 60 of 92
Full-Text Articles in Biology
Effects Of Am Fungi From Conventional And No-Till Michigan Crop Fields On Plant And Soil Health, Derek Bennett
Effects Of Am Fungi From Conventional And No-Till Michigan Crop Fields On Plant And Soil Health, Derek Bennett
Masters Theses
Centuries of conventional till (CT) management in agriculture has depleted soil organic matter (SOM) by over 50%. While only comprising 5% in most soils, SOM provides soil with fertility and productivity. To compensate for SOM depletion, producers have been forced to increase their reliance on fertilizer and irrigation to maintain yields. In the coming decades, climate change is expected to challenge food production and threaten an already fragile system. With no remaining land left to cultivate, conservation management strategies such as no-till (NT) look to restore SOM and increase the resilience of food production for an ever growing, increasingly food …
Characterizing The Microbiome Of Floral Nectar Of Asclepias Syriaca And Other Asclepias Species, Heather Natterer
Characterizing The Microbiome Of Floral Nectar Of Asclepias Syriaca And Other Asclepias Species, Heather Natterer
Undergraduate Honors Theses
In recent decades, Danaus plexippus (the monarch butterfly) has experienced a drastic decrease in population size due to urbanization, climate change, and habitat loss. The primary habitat and food source of D. plexippus is plant species that are within the genus Asclepias (milkweed). The preservation and propagation of Asclepias spp. is necessary to combat D. plexippus’s population declines. A plant’s reproductive success is dependent upon its ability to attract pollinators, which is linked to the plant’s nectar qualities. We propose that, in turn, these nectar qualities may be influenced by the nectar microbiome. This study aims to better understand the …
Winners And Losers In Reforestation Efforts In The Lower Rio Grande Valley Of Texas, And The Predictive Power Of Xylem Anatomy On Long-Term Growth And Survival, Clifton F. Albrecht
Winners And Losers In Reforestation Efforts In The Lower Rio Grande Valley Of Texas, And The Predictive Power Of Xylem Anatomy On Long-Term Growth And Survival, Clifton F. Albrecht
Theses and Dissertations
Reforestation has been ongoing in the Lower Rio Grande Valley annually since the 1980s, and to date over 6400 ha of land has been reforested in this area. However, there has been little subsequent study of the change and development of those forests as they mature. This thesis consists of two, interrelated, studies: (1) surveys of a five-site chronosequence of restored forests and (2) quantification of xylem anatomical traits of a subset of species present at the reforestation sites. Surveys showed a consistent reduction in species diversity and stem number density on the landscape, and identified a suite of species …
Understanding The Ecological Role, Population Dynamics, And Geographic Distribution Of Manihot Walkerae, Gisel Garza
Understanding The Ecological Role, Population Dynamics, And Geographic Distribution Of Manihot Walkerae, Gisel Garza
Theses and Dissertations
Walker’s Manihot, Manihot walkerae Croizat (Euphorbiaceae), is an endangered plant that is endemic to the Tamaulipan thornscrub ecoregion. Understanding M. walkerae’s geographic distribution, populations, and species interactions can provide essential information for the development of sound conservation strategies. To this aim, I asked the following questions: 1) What is the potential geographic distribution for M. walkerae? and, will it be affected by climate change? 2) Using global and regional extinction risk assessments, what is the extinction risk category for M. walkerae after incorporating species distribution models? 3) What do natural history observations reveal about M. walkerae’s population …
Physical And Chemical Defense Mechanisms In Aloe Barbadensis Against Insect Herbivores, Zachary Johnson
Physical And Chemical Defense Mechanisms In Aloe Barbadensis Against Insect Herbivores, Zachary Johnson
Theses and Dissertations
Chapter 1: This chapter provides an overview of insect herbivore impacts on plants and plant defense mechanisms to combat them. I particularly focused on physical and chemical defenses in the broader sense.
Chapter 2: This chapter describes the experiments that showed the effects of extracts from Aloe barbadensis on the growth and development of tobacco hornworm (Manduca sexta) and fall armyworm (Spodoptera frugiperda), model herbivores used to understand herbivore growth and plant defenses. This study shows that extracts from the Aloe differentially affected the growth and development of M. sexta and S. frugiperda. This chapter …
The Importance Of A Multidisciplinary Approach To Public Health: Addressing Food Insecurity Through A Biological And Sociological Lens, Chloe Grant
Honors Theses
Plants can sense the change of 1 oC in their growth environment and thus global climate change has a great impact on plant growth and development. The phenomenon that warm non-stress temperatures promote stem and petiole elongation, as well as leaf hyponastic growth, is collectively known as thermomorphogenesis. While it is known that the basic helix-loop-helix (bHLH) transcription factor PIF4 is highly inducible by temperature elevations and controls thermomorphogenesis in dicots (e.g., Arabidopsis thaliana), the molecular mechanism underlying thermomorphogenetic growth in monocots is not clear. In this study, I identify PIF4 orthologs in several economically important monocotyledonous species and …
Invasion Ecology And Response To Fire Of The Nonnative Fern Lygodium Microphyllum In The South Florida Everglades, Nicole Sebesta
Invasion Ecology And Response To Fire Of The Nonnative Fern Lygodium Microphyllum In The South Florida Everglades, Nicole Sebesta
FIU Electronic Theses and Dissertations
Lygodium microphyllum (Old World Climbing Fern (OWCF)) is a climbing fern native to tropical and subtropical regions of Australia, Asia, and Africa. First introduced to Florida as an ornamental in the 1960s, the fern has become a serious invasive in numerous Florida habitats, severely degrading native herbaceous and woody vegetation and altering fire behavior. One area with the greatest increase in OWCF cover is the sawgrass marsh of southern Everglades National Park (ENP), where prescribed fire is used for both maintenance of sawgrass marshes and management of OWCF infestations. However, the efficacy of OWCF control using fire in this habitat …
A Baseline Documentation Report For The Delta Wind Birds Sky Lake Nature Reserve, James Dubberly
A Baseline Documentation Report For The Delta Wind Birds Sky Lake Nature Reserve, James Dubberly
Honors Theses
The purpose of this baseline documentation is to conduct a report on our subject property and discuss the findings. A conservation easement is established by upholding a certain standard of a property’s current condition which makes a baseline documentation necessary for an easement to be enacted. Baseline documentation reports are used as a resource to monitor and enforce the legal agreements of the conservation easement. The subject property is currently owned by the Delta Wind Birds organization. In our scenario, this documentation report will serve to aid in the conversion of our subject property into a conservation easement in which …
Sciadopitys Verticillata (Japanese Umbrella Pine), #1065-1067, Grace C. Kubat
Sciadopitys Verticillata (Japanese Umbrella Pine), #1065-1067, Grace C. Kubat
BIO 140 Arboretum Project
Over the course of the 2021 spring semester, I observed a grove of Japanese Umbrella Pines. These trees are a part of the University's arboretum. In addition to making weekly observations, I researched the cultural significance of the Umbrella Pines. My research will hopefully contribute to future projects regarding the trees and help to enrich the University's arboretum project.
A Baseline Documentation Report For The Delta Wind Birds Sky Lake Nature Reserve, Preston T. Perkins, J Hays Dubberly, Michael J. Thomas
A Baseline Documentation Report For The Delta Wind Birds Sky Lake Nature Reserve, Preston T. Perkins, J Hays Dubberly, Michael J. Thomas
Honors Theses
The purpose of this baseline documentation is to conduct a report on our subject property and discuss the findings. A conservation easement is established by upholding a certain standard of a property’s current condition which makes a baseline documentation necessary for an easement to be enacted. Baseline documentation reports are used as a resource to monitor and enforce the legal agreements of the conservation easement. The subject property is currently owned by the Delta Wind Birds organization. In our scenario, this documentation report will serve to aid in the conversion of our subject property into a conservation easement in which …
(2808) Proposal To Reject The Name Acalypha Supera (Euphorbiaceae), Geoffrey A. Levin, Vernie G. Sagun
(2808) Proposal To Reject The Name Acalypha Supera (Euphorbiaceae), Geoffrey A. Levin, Vernie G. Sagun
Biology Faculty Publications
(2808) Acalypha supera Forssk.; Fl. Aegypt.-Arab.: 162. 1 Oct 1775[Angiosp.: Euphorb.]; nom. utique rej. prop.Typus: non designatus.
(2807) Proposal To Conserve The Name Acalypha Wilkesiana Against A. Tricolor (Euphorbiaceae), Geoffrey A. Levin, Vernie G. Sagun
(2807) Proposal To Conserve The Name Acalypha Wilkesiana Against A. Tricolor (Euphorbiaceae), Geoffrey A. Levin, Vernie G. Sagun
Biology Faculty Publications
(2807) Acalypha wilkesiana Müll. Arg. in Candolle; Prodr. 15(2):817. Aug (sero) 1866 [Angiosp.: Euphorb.]; nom. cons. prop.Typus: Fiji; [Viti Levu]; Rewa; “Unit. Stat. explor. exped.under Capt. Wilkes” (G-DC barcodes G00324021 &G00324022; isotypi: GH barcode GH00045512; K barcodeK000959008; US Nos. 1944717 & 1944718 [barcodes00096423 & 00096424]).
(=) Acalypha tricolor Veitch ex Mast. in Gard. Chron. 1866:483. 26 Mai 1866; nom rej. prop.Neotypus (hic designatus): “Hort. Veitch; New Hebrides[Vanuatu]”; Jul 1844 (K barcode K001235482).
Fagus Sylvatica (European Beech), #1009, Megan L. Trafford
Fagus Sylvatica (European Beech), #1009, Megan L. Trafford
BIO 140 Arboretum Project
No abstract provided.
Tilia Cordata (Littleleaf Linden) #1059, Heather Noel Mckee
Tilia Cordata (Littleleaf Linden) #1059, Heather Noel Mckee
BIO 140 Arboretum Project
In this paper I studied the Tilia cordata, more commonly known as the Littleleaf Linden, over the course of three months. I included the history and uses of the Linden tree along with its symbolic value in European culture. This tree symbolizes friendship and peace which coincides with the critical concerns of the Sisters of Mercy.
Eclp Invasive Plant Project: Spot The Invaders, Aida Washburn
Eclp Invasive Plant Project: Spot The Invaders, Aida Washburn
Showcase of Osprey Advancements in Research and Scholarship (SOARS)
An Environmental Center Leadership Program Project
Amelia Island is home to many beautiful native plants, but some invasive species have taken residence in the beach area and caused issues to the ecological system. The invasive plants outcompete our native species and can disrupt the shore bird and sea turtle nesting sites. Invasive plants also destabilize our dunes. A native plant is identified as a species that has naturally existed in each place for an extended length of time. Whereas an invasive species displaces and prevents native species from establishing. The goal of this project was to remove invasive plant species …
Dynamic Evolution In The Leucine-Rich Repeat Receptor-Like Kinase (Lrr-Rlk) Family Of Receptors, Jarrett Man
Dynamic Evolution In The Leucine-Rich Repeat Receptor-Like Kinase (Lrr-Rlk) Family Of Receptors, Jarrett Man
Doctoral Dissertations
Cells in multicellular organisms must gauge their environmental conditions, including neighboring cells, during development. In plants, the Leucine-Rich Repeat Receptor-like Kinases (LRR-RLKs) encode a family of membrane-bound receptors that transduce such cell-to-cell signals and are required for many aspects of plant development. Very little is known about the function of most of these genes, and the evolutionary history of the family is difficult to infer because of its size and complexity. Several factors contribute to this difficulty, including genetic redundancy, challenging bioinformatic detection, exceptionally large family size, and high copy number variation among species. In this dissertation, I characterize some …
What’S The Buzz?, Christine L. Moskalik
What’S The Buzz?, Christine L. Moskalik
Teacher Resources
Otto Warburg And His Contributions To The Screw Pine Family (Pandanaceae), Martin W. Callmander, Robert Vogt, Anna Donatelli, Sven Buerki, Chiara Nepi
Otto Warburg And His Contributions To The Screw Pine Family (Pandanaceae), Martin W. Callmander, Robert Vogt, Anna Donatelli, Sven Buerki, Chiara Nepi
Biology Faculty Publications and Presentations
Otto Warburg (1859–1938) had a great interest in tropical botany. He travelled in South-East Asia and the South Pacific between 1885 and 1889 and brought back a considerable collection of plant specimens from this expedition later donated to the Royal Botanical Museum in Berlin. Warburg published the first comprehensive monograph on the family Pandanaceae in 1900 in the third issue of Das Pflanzenreich established and edited by Adolf Engler (1844–1930). The aim of this article is to clarify the taxonomy, nomenclature and typification of Warburg's contributions to the Pandanaceae. Considerable parts of Warburg's original material was destroyed in Berlin …
Seed Rain–Successional Feedbacks In Wet Tropical Forests, Nohemi Huanca Nuñez, Robin L. Chazdon, Sabrina E. Russo
Seed Rain–Successional Feedbacks In Wet Tropical Forests, Nohemi Huanca Nuñez, Robin L. Chazdon, Sabrina E. Russo
School of Biological Sciences: Faculty Publications
Abstract
Tropical forest regeneration after abandonment of former agricultural land depends critically on the input of tree seeds, yet seed dispersal is increasingly disrupted in contemporary human-modified landscapes. Here, we introduce the concept of seed rain–successional feedbacks as a deterministic process in which seed rain is shaped by successional dynamics internal to a forest site and that acts to reinforce priority effects. We used a combination of time series and chronosequence approaches to investigate how the quantity and taxonomic and functional composition of seed rain change during succession and to evaluate the strength of seed rain–successional feedbacks, relative to other …
Responses Of Soil Surface Greenhouse Gas Emissions To Nitrogen And Sulfur Fertilizer Rates To Brassica Carinata Grown As A Bio-Jet Fuel, Dwarika Bhattarai, Gandura O. Abagandura, Thandiwe Nleya, Sandeep Kumar
Responses Of Soil Surface Greenhouse Gas Emissions To Nitrogen And Sulfur Fertilizer Rates To Brassica Carinata Grown As A Bio-Jet Fuel, Dwarika Bhattarai, Gandura O. Abagandura, Thandiwe Nleya, Sandeep Kumar
Agronomy, Horticulture and Plant Science Faculty Publications
Carinata (Brassica carinata A. Braun), a non-food oilseed crop and an alternative bio-jet fuel feedstock, has received attention for its potential as a low-input option for production in the semi-arid region of the Northern Great Plains of the United States. Research addressing the impacts of nitrogen (N) and sulfur (S) fertilizers on soils and greenhouse gas (GHG; CO2, N2O, and CH4) emissions from carinata production are limited. Thus, objective of this study was to evaluate the impact of different rates of N and S fertilizers applied to carinata on soil properties and GHG …
Evolution And Development Of Staminodes In Paronychia (Caryophyllaceae), Andrea D. Appleton
Evolution And Development Of Staminodes In Paronychia (Caryophyllaceae), Andrea D. Appleton
Honors College Theses
Staminodes are infertile stamens that have evolved numerous times in flowering plants and exhibit a vast array of forms and functions. Variation in staminodes suggests that numerous evolutionary processes underlie their origins, but to understand their how and why they evolved, comparative studies are needed in groups of closely related species. Identifying structures as staminodes is not always straightforward and sometimes requires corroborating phylogenetic and developmental evidence. Staminodial structures in Paronychia (Caryophyllaceae), for example, vary in shape and size and have been referred to as both petals and staminodes, rendering their homology uncertain. The development of staminodes was compared across …
Growth Of Diatom Fistulifera Alcalina In Bacterial Co-Culture And Comparative Mitogenomics Of Fistulifera Species, Erwin David Berthold
Growth Of Diatom Fistulifera Alcalina In Bacterial Co-Culture And Comparative Mitogenomics Of Fistulifera Species, Erwin David Berthold
FIU Electronic Theses and Dissertations
Diatoms are excellent biological models of growth and intracellular oil generation. The productivity and compounds of diatoms, especially oils, support aquatic food chains and human medical and industrial needs. The qualities that made diatoms prolific producers, specifically diatom physiological features such as growth rates with intracellular lipid storage in alkaline environments, are however poorly understood. Another physiological aspect that remains unexplored is the effects of bacteria on the growth and lipid production of alkaliphilic diatoms. More studies, especially co-cultures, are needed for advances in diatom biology and strain performance for the algal biotechnological field. Besides physiology, diatom genetics using next-generation …
A Microbiome Engineering Framework To Evaluate Rhizobial Symbionts Of Legumes, Kenjiro W. Quides, Hagop S. Atamian
A Microbiome Engineering Framework To Evaluate Rhizobial Symbionts Of Legumes, Kenjiro W. Quides, Hagop S. Atamian
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Background
For well over a century, rhizobia have been recognized as effective biofertilizer options for legume crops. This has led to the widespread use of rhizobial inoculants in agricultural systems, but a recurring issue has emerged: applied rhizobia struggle to provide growth benefits to legume crops. This has largely been attributed to the presence of soil rhizobia and has been termed the ‘rhizobial competition problem.’
Scope
Microbiome engineering has emerged as a methodology to circumvent the rhizobial competition problem by creating legume microbiomes that do not require exogenous rhizobia. However, we highlight an alternative implementation of microbiome engineering that focuses …
Picking Up Where The Tmdl Leaves Off: Using The Partnership Wild And Scenic River Framework For Collaborative River Restoration, Alan R. Hunt, Meiyin Wu, Tsung-Ta David Hsu, Nancy Roberts-Lawler, Jessica T. Miller, Alessandra Rossi, Lee Lee
Picking Up Where The Tmdl Leaves Off: Using The Partnership Wild And Scenic River Framework For Collaborative River Restoration, Alan R. Hunt, Meiyin Wu, Tsung-Ta David Hsu, Nancy Roberts-Lawler, Jessica T. Miller, Alessandra Rossi, Lee Lee
Department of Biology Faculty Scholarship and Creative Works
The National Wild and Scenic Rivers Act protects less than ¼ of a percent of the United States’ river miles, focusing on free-flowing rivers of good water quality with outstandingly remarkable values for recreation, scenery, and other unique river attributes. It predates the enactment of the Clean Water Act, yet includes a clear anti-degradation principle, that pollution should be reduced and eliminated on designated rivers, in cooperation with the federal Environmental Protection Agency and state pollution control agencies. However, the federal Clean Water Act lacks a clear management framework for implementing restoration activities to reduce non-point source pollution, of which …
The Regulatory Network For Petal Anthocyanin Pigmentation Is Shaped By The Myb5a/Negan Transcription Factor In Mimulus, Xingyu Zheng, Kuenzang Om, Kimmy A. Stanton, (...), Gregory D. Conradi Smith, Joshua R. Puzeyn, Et Al.
The Regulatory Network For Petal Anthocyanin Pigmentation Is Shaped By The Myb5a/Negan Transcription Factor In Mimulus, Xingyu Zheng, Kuenzang Om, Kimmy A. Stanton, (...), Gregory D. Conradi Smith, Joshua R. Puzeyn, Et Al.
Arts & Sciences Articles
Much of the visual diversity of angiosperms is due to the frequent evolution of novel pigmentation patterns in flowers. The gene network responsible for anthocyanin pigmentation, in particular, has become a model for investigating how genetic changes give rise to phenotypic innovation. In the monkeyflower genus Mimulus, an evolutionarily recent gain of petal lobe anthocyanin pigmentation in M. luteus var. variegatus was previously mapped to genomic region pla2. Here, we use sequence and expression analysis, followed by transgenic manipulation of gene expression, to identify MYB5a—orthologous to the NEGAN transcriptional activator from M. lewisii—as the gene responsible …
The Multifunctional Roles Of Polyphenols In Plant-Herbivore Interactions, Sukhman Singh, Ishveen Kaur, Rupesh R. Kariyat
The Multifunctional Roles Of Polyphenols In Plant-Herbivore Interactions, Sukhman Singh, Ishveen Kaur, Rupesh R. Kariyat
Biology Faculty Publications and Presentations
There is no argument to the fact that insect herbivores cause significant losses to plant productivity in both natural and agricultural ecosystems. To counter this continuous onslaught, plants have evolved a suite of direct and indirect, constitutive and induced, chemical and physical defenses, and secondary metabolites are a key group that facilitates these defenses. Polyphenols—widely distributed in flowering plants—are the major group of such biologically active secondary metabolites. Recent advances in analytical chemistry and metabolomics have provided an opportunity to dig deep into extraction and quantification of plant-based natural products with insecticidal/insect deterrent activity, a potential sustainable pest management strategy. …
Inhibition Of Biofilm Formation By The Synergistic Action Of Egcg-S And Antibiotics, Shrameeta Shinde, Lee Lee, Tinchun Chu
Inhibition Of Biofilm Formation By The Synergistic Action Of Egcg-S And Antibiotics, Shrameeta Shinde, Lee Lee, Tinchun Chu
Department of Biology Faculty Scholarship and Creative Works
Biofilm, a stress-induced physiological state, is an established means of antimicrobial tolerance. A perpetual increase in multidrug resistant (MDR) infections associated with high mortality and morbidity have been observed in healthcare settings. Multiple studies have indicated that the use of natural products can prevent bacterial growth. Recent studies in the field have identified that epigallocatechin gallate (EGCG), a green tea polyphenol, could disrupt bacterial biofilms. A modified lipid-soluble EGCG, epigallocatechin-3-gallate-stearate (EGCG-S), has enhanced the beneficial properties of green tea. This study focuses on utilizing EGCG-S as a novel synergistic agent with antibiotics to prevent or control biofilm. Different formulations of …
Lichens And Biofilms: Common Collective Growth Imparts Similar Developmental Strategies, Erin C. Carr, Steven D. Harris, Joshua R. Herr, Wayne Riekhof
Lichens And Biofilms: Common Collective Growth Imparts Similar Developmental Strategies, Erin C. Carr, Steven D. Harris, Joshua R. Herr, Wayne Riekhof
Department of Plant Pathology: Faculty Publications
Lichens are traditionally defined as a symbiotic relationship between fungi and algae and/or cyanobacteria. This union forms a unique structure called the thallus, which attaches to surfaces such as rocks and tree bark. Recent reports challenge the view that lichens are comprised of one fungus and one photobiont, and instead suggest that they are a consortium of microbes. Much of lichen biology remains unknown as most of our knowledge of lichens is limited to morphological characteristics with little to no functional analysis of lichen genes. However, lichens and biofilms share many similar physiological traits which when compared may assist in …
First Report Of Yellow-Flowered Teasel, Dipsacus Strigosus Willd. Ex Roem. & Schult. (Dipsacaceae) In Indiana, A North American Record, Rebecca W. Dolan
First Report Of Yellow-Flowered Teasel, Dipsacus Strigosus Willd. Ex Roem. & Schult. (Dipsacaceae) In Indiana, A North American Record, Rebecca W. Dolan
Scholarship and Professional Work - LAS
This paper reports the presence of Dipsacus strigosus Willd. ex Roem. & Schult. in Indiana. The species, native to western Asia, is naturalized in several locations in Europe. This is the first documented occurrence in North America. The new record was collected along a recently constructed bike path in a moist wooded area of the Butler University campus in Indianapolis, Indiana, USA. Like the two other species of the genus known in the Indiana, D. strigosus is likely to be invasive, so efforts will be made to eradicate this population. The plant should be monitored and looked for in other …
Protein Prenylation In The Moss Physcomitrium Patens, Zayna H. Qaissi, Anam F. Ahmed, Katherine V. Brown, Mark P. Running
Protein Prenylation In The Moss Physcomitrium Patens, Zayna H. Qaissi, Anam F. Ahmed, Katherine V. Brown, Mark P. Running
Undergraduate Arts and Research Showcase
Protein prenylation is the addition of a 15 or 20 carbon lipid to a cysteine near carboxyl terminus of target proteins. Prenylation increases hydrophobicity, which facilitates membrane associations and protein-protein interaction. Protein prenylation is generally conserved among eukaryotes, and mutations in genes that carry out prenylation are lethal in animals and yeast. In plants prenylation mutations are not always lethal, but they do affect development, disease resistance, biofuel production, and drought response, among other processes of agricultural interest. To understand the evolutionary and developmental implications of plant protein prenylation, we used the sequenced, annotated, and translated genome of the moss …