The Manuscript Works Of S. Fred Prince (1857-1951), 2018 University of Dayton
The Manuscript Works Of S. Fred Prince (1857-1951), Sarah Burke Cahalan, Jason W. Dean
Marian Library/IMRI Faculty Publications
S. Fred Prince, a botanical illustrator and amateur scientist, is a largely unknown artist whose work on the American landscape demonstrates his eligibility to be considered in the lineage of self-taught illustrator-naturalists such as Mark Catesby and Genevieve Jones. In this article, we present a survey of extant Prince materials identified at time of writing, describing their contents and physical characteristics. Beyond this survey and description, we also provide a biographical sketch and timeline of Prince's life.
Life Behind The Wall: Sensing Mechanical Cues In Plants, 2017 Washington University in St Louis
Life Behind The Wall: Sensing Mechanical Cues In Plants, Olivier Hamant, Elizabeth S. Haswell
Biology Faculty Publications & Presentations
There is increasing evidence that all cells sense mechanical forces in order to perform their functions. In animals, mechanotransduction has been studied during the establishment of cell polarity, fate, and division in single cells, and increasingly is studied in the context of a multicellular tissue. What about plant systems? Our goal in this review is to summarize what is known about the perception of mechanical cues in plants, and to provide a brief comparison with animals.
Effects Of Mycorrhizal Fungi On Vigna Radiata Growth In Soil Differing In Fertilizer Concentration, 2017 Chinese International School Hong Kong
Effects Of Mycorrhizal Fungi On Vigna Radiata Growth In Soil Differing In Fertilizer Concentration, Ming Sum Jessica Cheng
Pursuit - The Journal of Undergraduate Research at the University of Tennessee
Mycorrhizal fungi form mutualistic relationships with the roots of some plants, allowing the plant access to nutrients and minerals while the fungi obtain food from the plant. Given that this relationship is beneficial to the plant, this paper investigates the nature of the impact of presence of mycorrhizal fungi on the growth of Vigna radiata (mung beans) in soil of differing chemical environments. Through comparing the stem lengths of plants seven days after germination, it is found that in soil with 0.0% fertilizer, the presence of locally collected, unclassified mycorrhizal fungi impacts the growth of Vigna radiata negatively; in ...
Phenotypic And Genotypic Diversity Of Eastern Leatherwood In Five Populations That Span Its Geographic Distribution, Bryan J. Peterson, William R. Graves, Jyotsna Sharma
William R Graves
Knowledge of variation among populations is important for making decisions about conservation of rare, threatened or endangered taxa. We investigated variation within and among five populations ofDirca palustris L. an understory shrub with a sporadic distribution and life-history traits that led us to predict strong phenotypic and genetic differentiation characteristic of historically limited gene flow. Populations sampled in Florida, Alabama, Illinois, Wisconsin and North Dakota spanned the geographic distribution of the species. Phenotypic traits differed among populations, and many traits correlated with latitude and environmental characteristics of the five sites. Principal components (PC) analysis showed that the first three PCs ...
Photosynthesis And Shoot Health Of Five Birch And Four Alder Taxa After Drought And Flooding, 2017 Iowa State University
Photosynthesis And Shoot Health Of Five Birch And Four Alder Taxa After Drought And Flooding, William R. Graves, Mark A. Kroggel, Mark P. Widrlechner
William R Graves
Selection of under-used taxa of birches (Betula L.) and alders (Alnus Miller) for use in managed landscapes can be guided by information on their responses to moisture extremes in the root zone. Our objective was to compare the photosynthesis, leaf surface area, and subjective health ratings of eight relatively obscure birches and alders when treated with drought and flooding in a greenhouse. We also treated ‘Whitespire Sr.’ birch (Betula populifolia) to demonstrate responses of a cultivar common in the nursery trade. Plants used as controls were irrigated daily, whereas pots of flooded plants were immersed. All water was withheld from ...
Confirmation That Dirca Spp. (Thymelaeaeae) Reproduce From Rhizomes, 2017 Iowa State University
Confirmation That Dirca Spp. (Thymelaeaeae) Reproduce From Rhizomes, William R. Graves
William R Graves
There are three North American species of deciduous shrubs in the genus Dirca L. Dirca palustris L. occurs in the eastern United States and in southeastern Canada (Vogelmann 1953). Although its distribution is broad, D. palustris typically is obscure locally and is restricted to moist soils as an understory species along wooded slopes (Kurz 1997). Dirca occidentalis Gray also occurs on slopes (McMinn and Forderhase 1935), but its distribution is narrowly restricted to six counties of California near the San Francisco Bay. Within this area, D. occidentalis inhabits cool niches with frequent fog and relatively uniform soil moisture (Johnson 1994 ...
Systematics Of Dirca (Thymelaeaceae) Based On Its Sequences And Issr Polymorphisms, 2017 Iowa State University
Systematics Of Dirca (Thymelaeaceae) Based On Its Sequences And Issr Polymorphisms, James A. Schrader, William R. Graves
William R Graves
The genus Dirca consists of three disjunct species of shrubs. Dirca palustris is found in the eastern United States and adjacent Canada; D, occidcntahs is Umited to six counties near the San Francisco Bay in California; and the recently discovered D, mcxicana is known from one isolated population in northeastern Mexico. The three species have been described and classified according to morphological characters, but the morphological evidence does not provide a clear assessment of the relationships among the species. Morphologically D. mexicana most closely resembles D. occidenlalis., but known biogeographical trends raise doubt regarding how the three species are interrelated ...
Alnus Maritima: A Rare Woody Species From The New World, 2017 Iowa State University
Alnus Maritima: A Rare Woody Species From The New World, James A. Schrader, William R. Graves
William R Graves
Although first introduced into cultivation in the 1870's and praised for its ornamental character, Alnus maritima (Marsh.) Muhl. ex Nutt. (seaside alder) remains a rare woody species with unrealised potential. The ornamental promise of A. maritima was first recognised by Thomas Meehan, an Englishman who emigrated to the United States (Philadelphia, Pa). In 1848 after serving for two years at the Royal Botanic Gardens, Kew, Mr. Meehan was best known as the publisher of Meehan's Monthly (1891- 1902) and as the author of The American Handbook of Ornamental Trees (1853) and The Native Flowers and Ferns of the ...
Optimization Of Recombinant Expression Enables Discovery Of Novel Cytochrome P450 Activity In Rice Diterpenoid Biosynthesis, Naoki Kitaoka, Yisheng Wu, Meimei Xu, Reuben J. Peters
Reuben J. Peters
The oxygenation reactions catalyzed by cytochromes P450 (CYPs) play critical roles in plant natural products biosynthesis. At the same time, CYPs are one of most challenging enzymes to functionally characterize due to the difficulty of recombinantly expressing these membrane-associated monooxygenases. In the course of investigating rice diterpenoid biosynthesis we have developed a synthetic biology approach for functional expression of relevant CYPs in Escherichia coli. In certain cases activity was observed for only one of two closely related paralogs although it seems clear that related reactions are required for production of the known diterpenoids. Here we report that optimization of the ...
Functional Divergence Of Diterpene Syntheses In The Medicinal Plant Salvia Miltiorrhiza, 2017 Chinese Academy of Sciences
Functional Divergence Of Diterpene Syntheses In The Medicinal Plant Salvia Miltiorrhiza, Guanghong Cui, Lixin Duan, Baolong Jin, Jun Qian, Zheyong Xue, Guoan Shen, John Hugh Snyder, Jingyuan Song, Shilin Chen, Luqi Huang, Reuben J. Peters, Xiaoquan Qi
Reuben J. Peters
The medicinal plant Salvia miltiorrhiza produces various tanshinone diterpenoids that have pharmacological activities such as vasorelaxation, against ischemia-reperfusion injury, and antiarrhythmic effects. Their biosynthesis is initiated from the general diterpenoid precursor (E,E,E)-geranylgeranyl diphosphate by sequential reactions catalyzed by copalyl diphosphate synthase (CPS) and kaurene synthase-like (KSL) cyclases. Here is reported characterization of these enzymatic families from S. miltiorrhiza, which has led to the identification of novel pathways, including roles for separate CPSs in tanshinone production in roots versus aerial tissues (SmCPS1 and SmCPS2, respectively), as well as the novel production of ent-13-epi-manoyl oxide by SmCPS4 and SmKSL2 ...
Biosynthesis Of The Diterpenoid Lycosantalonol Via Nerylneryl Diphosphate In Solanum Lycopersicum, 2017 University of Michigan
Biosynthesis Of The Diterpenoid Lycosantalonol Via Nerylneryl Diphosphate In Solanum Lycopersicum, Yuki Matsuba, Jiachen Zi, A. Daniel Jones, Reuben J. Peters, Eran Pichersky
Reuben J. Peters
We recently reported that three genes involved in the biosynthesis of monoterpenes in trichomes, a cis-prenyltransferase named neryl diphosphate synthase 1 (NDPS1) and two terpene synthases (TPS19 and TPS20), are present in close proximity to each other at the tip of chromosome 8 in the genome of the cultivated tomato (Solanum lycopersicum). This terpene gene “cluster” also contains a second cis-prenyltransferase gene (CPT2), three other TPS genes, including TPS21, and the cytochrome P450-oxidoreductase gene CYP71BN1. CPT2encodes a neryneryl diphosphate synthase. Co-expression in E. coli of CPT2 and TPS21 led to the formation of the diterpene lycosantalene, and co-expression in E ...
Drought Effects On Composition And Yield For Corn Stover, Mixed Grasses, And Miscanthus As Bioenergy Feedstocks, 2017 Idaho National Laboratory
Drought Effects On Composition And Yield For Corn Stover, Mixed Grasses, And Miscanthus As Bioenergy Feedstocks, Rachel Emerson, Amber Hoover, Allison Ray, Jeffrey Lacey, Marnie Cortez, Courtney Payne, Douglas L. Karlen, Stuart Birrell, David Laird, Robert Kallenbach, Josh Egenolf, Matthew Sousek, Thomas Voigt
Douglas L Karlen
Drought conditions in 2012 were some of the most severe in recent history. The purpose of this study is to examine the impact of drought on quality, quantity, and theoretical ethanol yield (TEY) of three bioenergy feedstocks, corn stover, mixed grasses from Conservation Reserve Program lands, and Miscanthus × giganteus. To assess drought effects on these feedstocks, samples from 2010 (minimal to no drought) and 2012 (severe drought) were compared from multiple locations in the US. In all feedstocks, drought significantly increased extractives and reduced structural sugars and lignin; subsequently, TEYs were reduced 10–15%. Biomass yields were significantly reduced for ...
Transcriptomic Resources For The Medicinal Legume Mucuna Pruriens: De Novo Transcriptome Assembly, Annotation, Identification And Validation Of Est-Ssr Markers, N. Sathyanarayana, Ranjith Kumar Pittala, Pankaj Kumar Tripathi, Ratan Chopra, Heikham Russiachand Singh, Vikas Belamkar, Pardeep Kumar Bhardwaj, Jeff J. Doyle, Ashley N. Egan
Agronomy & Horticulture -- Faculty Publications
The medicinal legume Mucuna pruriens (L.) DC. has attracted attention worldwide as a source of the anti-Parkinson’s drug L-Dopa. It is also a popular green manure cover crop that offers many agronomic benefits including high protein content, nitrogen fixation and soil nutrients. The plant currently lacks genomic resources and there is limited knowledge on gene expression, metabolic pathways, and genetics of secondary metabolite production. Here, we present transcriptomic resources for M. pruriens, including a de novo transcriptome assembly and annotation, as well as differential transcript expression analyses between root, leaf, and pod tissues. We also develop microsatellite markers ...
Size-Dependent Patterns Of Reproductive Investment In The North American Invasive Plant Species Triadica Sebifera (L.) Small (Euphorbiaceae), Courtney H. Babin
University of New Orleans Theses and Dissertations
Knowledge of sex allocation trade-offs with tree growth in insect-pollinated woody plants is limited, particularly in invasive plants. This study examined patterns of growth and reproductive investment in a North American invasive plant species, Triadica sebifera, I hypothesized that the energy limitations of smaller trees may result in the production of more male reproductive structures that are energetically less costly. Diameter at breast height was a significant predictor of seed and catkin mass and regression can describe these relationships across sites. Seed and catkin mass were positively correlated across sites. The relationship between the seed mass:catkin mass ratio and ...
A Comprehensive Analysis Of Alternative Splicing In Paleopolyploid Maize, 2017 University of Florida
A Comprehensive Analysis Of Alternative Splicing In Paleopolyploid Maize, Wenbin Mei, Sanzhen Liu, James C. Schnable, Cheng-Ting Yeh, Nathan M. Springer, Patrick S. Schnable, William Brad Barbazuk
Agronomy & Horticulture -- Faculty Publications
Identifying and characterizing alternative splicing (AS) enables our understanding of the biological role of transcript isoform diversity. This study describes the use of publicly available RNA-Seq data to identify and characterize the global diversity of AS isoforms in maize using the inbred lines B73 and Mo17, and a related species, sorghum. Identification and characterization of AS within maize tissues revealed that genes expressed in seed exhibit the largest differential AS relative to other tissues examined. Additionally, differences in AS between the two genotypes B73 and Mo17 are greatest within genes expressed in seed. We demonstrate that changes in the level ...
Differentiating The Neches River Rose Mallow (Hibiscus Dasycalyx) From Its Congeners By Means Of Phylogenetics And Population Genetics, 2017 University of Texas at Tyler
Differentiating The Neches River Rose Mallow (Hibiscus Dasycalyx) From Its Congeners By Means Of Phylogenetics And Population Genetics, Julia Norrell
This study used molecular phylogenetic methods to attempt to resolve the taxonomic status of the federally threatened East Texas-endemic wildflower, the Neches River Rose Mallow (Hibiscus dasycalyx). Hibiscus dasycalyx co-occurs with two other closely related congeners that are currently not of conservation concern: the halberdleaf rose mallow (H. laevis); and the crimson-eyed rose mallow (H. moscheutos). This study assessed the phylogeny of these three Hibiscus species, and attempted to determine if there is possible hybridization occurring between them. To this end, Restriction Site Associated DNA Sequencing (RAD-Seq), a Next Generation Sequencing method, was used to generate genome-wide polymorphic genetic data ...
Evaluation And Association Analysis Of Cowpea Salt Tolerance, 2017 University of Arkansas, Fayetteville
Evaluation And Association Analysis Of Cowpea Salt Tolerance, Waltram Second Ravelombola
Theses and Dissertations
Cowpea [Vigna unguiculata (L.) Walp.] (2n=2x=22) is a leguminous crop providing inexpensive protein for human consumption that can be grown worldwide. Salinity is one of the major threats to cowpea production, particularly in semi-arid regions of Africa. Salinity significantly affects seed germination and decreases pod yield in cowpea. However, little has been done to provide farmers salt-tolerant cowpea cultivars. Knowledge on the genetics of cowpea salt tolerance is very limited. This study aimed to:(1) evaluate cowpea salt tolerance at germination stage, (2) evaluate cowpea salt tolerance at seedling stage, (3) conduct an association study for cowpea salt ...
The Effect Of Insects On Seed Set Of Ozark Chinquapin, Castanea Ozarkensis, 2017 University of Arkansas, Fayetteville
The Effect Of Insects On Seed Set Of Ozark Chinquapin, Castanea Ozarkensis, Colton Zirkle
Theses and Dissertations
Ozark chinquapin (Castanea ozarkensis), once found throughout the Interior Highlands of the United States, has been decimated across much of its range due to accidental introduction of chestnut blight, Cryphonectria parasitica. Efforts have been made to conserve and restore C. ozarkensis, but success requires thorough knowledge of the reproductive biology of the species. Other Castanea species are reported to have characteristics of both wind and insect pollination, but pollination strategies of Ozark chinquapin are unknown. Experiments were conducted to determine the influence of insects on successful pollination of C. ozarkensis, as measured by production of burs and seeds. Exclosure treatments ...
Phenotypic Variation And Genetic Purity Of The Original 'Prime-Jim®' X 'Arapaho' Population, 2017 University of Arkansas
Phenotypic Variation And Genetic Purity Of The Original 'Prime-Jim®' X 'Arapaho' Population, Loren M. Luther
Horticulture Undergraduate Honors Theses
In 2013, Castro et al., produced the first linkage map for primocane-fruiting blackberries using the cross ‘Prime-Jim®’ x ‘Arapaho.’ This mapping population has been maintained since the original experiment with the hopes of conducting future studies. Further research was determined to be needed on the population to better characterize additional phenotypic traits, and since nine years had passed since the seedlings were established, there was a need to assess the continued genetic purity of the population using molecular methods. Phenotypic data was collected to analyze the variation of the population including soluble solids content, titratable acidity, average weight, shape, and ...
Myosin Xi-I Works In Tandem With A Microtubule-Associated Mechanism To Position The Nucleus In Arabidopsis Root Hairs, 2017 University of Tennessee, Knoxville
Myosin Xi-I Works In Tandem With A Microtubule-Associated Mechanism To Position The Nucleus In Arabidopsis Root Hairs, Ian Andrew Windham
University of Tennessee Honors Thesis Projects
No abstract provided.