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2,503 Matching Results
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Comparative Diet Analysis of Barn Owl (Tyto alba) and Long- Eared Owl (Asio otus) in a Habitat Island in North-Central Texas
Article filling the regional gap in knowledge of diet composition of the barn owl (Tyto alba) and the long-eared owl (Asio otus). The study was conducted at the Lewisville Lake Environmental Learning Area (LLELA) and examined the remains found in owl pellets collected September 2016 to March 2017.
Date:
August 22, 2020
Creator:
Jiménez, Jaime E.; Jones, Matthew K.; Stoddart, Kaitlyn; Dickson, Sentell; Chapman, Abigail; Baxter-Slye, Jaime L. et al.
Object Type:
Article
System:
The UNT Digital Library
Angiogenesis in the Avian Embryo Chorioallantoic Membrane: A Perspective on Research Trends and a Case Study on Toxicant Vascular Effects
This article considers areas of cardiovascular research that have benefited from studies of the chorioallantoic membrane (CAM), including the themes of investigation of the CAM’s hemodynamic influence on heart and central vessel development, use of the CAM as a model vascular bed for studying angiogenesis, and the CAM as an assay tool.
Date:
October 28, 2020
Creator:
Burggren, Warren W. & Antich, Maria Rojas
Object Type:
Article
System:
The UNT Digital Library
Exploring the socio-economic and environmental components of infectious diseases using multivariate geovisualization: West Nile Virus
Article focusing on West Nile Virus (WNV), a mosquito borne pathogen, as a case study for spatial data visualization of environmental characteristics of a vector’s habitat alongside human demographic composition for understanding potential public health risks of infectious disease.
Date:
March 2, 2020
Creator:
Kala, Abhishek K.; Atkinson, Samuel F. & Tiwari, Chetan
Object Type:
Article
System:
The UNT Digital Library
Leaf Lipid Alterations in Response to Heat Stress of Arabidopsis thaliana
Article measuring lipid levels with mass spectrometry to confirm the previously observed changes in Arabidopsis thaliana leaf lipids under three heat stress regimens. Additionally, in response to heat, increased oxidation of the fatty acyl chains of leaf galactolipids, sulfoquinovosyldiacylglycerols, and phosphatidylglycerols, and incorporation of oxidized acyl chains into acylated monogalactosyldiacylglycerols are shown. The authors also observed increased levels of digalactosylmonoacylglycerols and monogalactosylmonoacylglycerols. The hypothesis that a defect in sterol glycosylation would adversely affect regrowth of plants after a severe heat stress regimen was tested, but differences between wild-type and sterol glycosylation-defective plants were not detected.
Date:
July 4, 2020
Creator:
Shiva, Sunitha; Samarakoon, Thilani; Lowe, Kaleb A.; Roach, Charles; Vu, Hieu Sy; Colter, Madeline et al.
Object Type:
Article
System:
The UNT Digital Library
Celebrating 20 Years of Genetic Discoveries in Legume Nodulation and Symbiotic Nitrogen Fixation
This article is a review cataloging and contextualizing all of the plant genes currently known to be required for SNF in two model legume species, Medicago truncatula and Lotus japonicus, and two crop species, Glycine max (soybean) and Phaseolus vulgaris (common bean). The authors also briefly consider the future of SNF genetics in the era of pan-genomics and genome editing.
Date:
October 24, 2019
Creator:
Roy, Sonali; Liu, Wei; Nandety, Raja Sekhar; Crook, Ashley; Mysore, Kirankumar S.; Pislariu, Catalina I. et al.
Object Type:
Article
System:
The UNT Digital Library
SEIPIN Isoforms Interact with the Membrane-Tethering Protein VAP27-1 for Lipid Droplet Formation
Article demonstrating that part of the function of two SEIPIN isoforms in Arabidopsis (Arabidopsis thaliana), AtSEIPIN2 and AtSEIPIN3, may depend on their interaction with the vesicle-associated membrane protein (VAMP)–associated protein (VAP) family member AtVAP27-1. The authors used a combination of biochemical, cell biology, and genetics approaches to show that AtVAP27-1 interacts with the N termini of AtSEIPIN2 and AtSEIPIN3 and likely supports the normal formation of LDs. This insight indicates that the ER membrane tethering machinery in plant cells could play a role with select SEIPIN isoforms in LD biogenesis at the ER, and additional experimental evidence in Saccharomyces cerevisiae supports the possibility that this interaction may be important in other eukaryotic systems.
Date:
July 20, 2020
Creator:
Greer, Michael Scott; Cai, Yingqi; Gidda, Satinder K.; Esnay, Nicolas; Kretzschmar, Franziska K.; Seay, Damien C. et al.
Object Type:
Article
System:
The UNT Digital Library
Assessing distribution shifts and ecophysiological characteristics of the only Antarctic winged midge under climate change scenarios
Article integrating ecophysiological information with the development of new high-resolution climatic layers for Antarctica, to better understand how the distribution of P. steinenii may respond to change over the next century under different IPCC climate change scenarios. The authors conclude that the species has the potential to expand its distribution to include parts of the west and east coasts of the Antarctic Peninsula and even coastal ice-free areas in parts of continental Antarctica. The authors also propose P. steinenii as an effective native sentinel and indicator species of climate change in the Antarctic.
Date:
June 3, 2020
Creator:
Contador, Tamara; Gañán, Melisa; Bizama, Gustavo; Fuentes-Jaque, Guillermo; Morales, Luis; Rendoll, Javier et al.
Object Type:
Article
System:
The UNT Digital Library
Abscisic acid regulates secondary cell-wall formation and lignin deposition in Arabidopsis thaliana through phosphorylation of NST1
Article using a combination of biochemical and genetic approaches to show how ABA can regulate lignin biosynthesis. This work provides a basis for designing trees and other biomass plants that are better adapted to stress and climate change. This article includes a correction on the first page.
Date:
February 2, 2021
Creator:
Liu, Chang; Yu, Hasi; Rao, Xiaolan; Li, Laigeng & Dixon, R. A.
Object Type:
Article
System:
The UNT Digital Library
Integrative omics identification, evolutionary and structural analysis of low affinity nitrate transporters in diatoms, diNPFs
This article reports a comprehensive characterization of the Nitrate Transporter 1/Peptide Transporter Family (NPF) in diatoms, diNPFs.
Date:
April 7, 2021
Creator:
Santin, Anna; Caputi, Luigi; Longo, Antonella; Chiurazzi, Maurizio; d’Alcalà, Maurizio Ribera; Russo, Monia Teresa et al.
Object Type:
Article
System:
The UNT Digital Library
Migratory movements of Atlantic puffins Fratercula arctica naumanni from high Arctic Greenland
This article is the first to present data on the migratory movements of the “large-billed” subspecies, F. a. naumanni, that breeds in the high Arctic and which has significantly larger body size than those farther south.
Date:
May 28, 2021
Creator:
Burnham, Kurt K.; Burnham, Jennifer L.; Johnson, Jeff A. & Huffman, Abby
Object Type:
Article
System:
The UNT Digital Library
Phosphorus deprivation affects composition and spatial distribution of membrane lipids in legume nodules
Article assessing membrane lipids in M. truncatula tissues using electrospray ionization–mass spectrometry. The results suggest that specific PC species may be differentially important in diverse nodule zones and cell types, and that membrane lipid remodeling during P stress is not uniform across the nodule.
Date:
January 13, 2021
Creator:
Dokwal, Dhiraj; Romsdahl, Trevor B.; Kunz, Daniel A.; Alonso, Ana Paula & Dickstein, Rebecca
Object Type:
Article
System:
The UNT Digital Library
Records of Parochlus steinenii in the Maritime Antarctic and sub-Antarctic regions
This article provides the summary of the reports of the geographical distribution in the Maritime Antarctic and sub-Antarctic regions of Parochlus steinenii (Gercke, 1889) (Diptera, Chironomidae), the only flying insect occurring naturally in the Antarctic continent. This database was developed as one of the main objectives of two Chilean-funded research projects addressing understanding the effects of climate change on sub-Antarctic and Antarctic insects.
Date:
January 18, 2021
Creator:
Gañán, Melisa; Contador, Tamara; Rendoll, Javier; Simoes, Felipe; Pérez, Carolina; Graham, Gillian et al.
Object Type:
Article
System:
The UNT Digital Library
Non-Genetic Inheritance of Hypoxia Tolerance in Fishes: Dynamics and Mechanisms
Data management plan for the grant, "Non-Genetic Inheritance of Hypoxia Tolerance in Fishes: Dynamics and Mechanisms." Research quantifying the inheritance of tolerance to low oxygen in a model fish and then determine the tolerance mechanisms, at organismal to molecular levels, that are passed on from parents to their offspring. The investigators will not only focus on conventional, well-studied genetic mechanisms for inheritance, but will explore so-called “epigenetic” forms of inheritance that may transfer parental characteristics for only a generation or two. Such “temporary inheritance” might actually require less energy and be more beneficial to a species than the more permanent form of genetic inheritance. This project will quantify non-genetic inheritance of hypoxia tolerance in zebrafish as a model organism and then identify underlying mechanisms, at organismal to molecular levels, in parents and in their progeny. Specifically, this project will quantify non-genetically inherited traits that allow hypoxia tolerance, determine “wash-in” and “wash-out” (i.e., the dynamics) of hypoxia-tolerant phenotypes across multiple generations, and establish epigenetic mechanism(s) of non-genetic inheritance in subsequent generations. The information provided by this project will allow biologists to better predict, and perhaps even mitigate, the negative consequences of future episodes of low oxygen in rivers and lakes.
Date:
2021-06-15/2025-05-31
Creator:
Burggren, Warren W. & Padilla, Pamela A.
Object Type:
Text
System:
The UNT Digital Library
Chemical-Guided Identification of Primary Metabolic Targets for Improvement of Hydroxy Fatty Acid Synthesis in Physaria fendleri
Data management plan for the grant, "Chemical-Guided Identification of Primary Metabolic Targets for Improvement of Hydroxy Fatty Acid Synthesis in Physaria fendleri." Research on the identification of primary metabolic targets using chemical-guided identification. The first objective of this research is to conduct metabolomics analysis on P. fendleri embryos cultured with two identified chemical regulators of fatty acid metabolism. The second objective of this research is to generate a metabolic flux map of embryos treated with these regulatory compounds in order to determine how metabolic rates and carbon flow can be manipulated to improve HFA production in this species and increase its commercial viability. With properties that could replace imported castor oil, research on the crop in discussion is situated directly in the scope of the USDA-AFRI Education and Workforce Development goals.
Date:
2021-06-15/2023-06-14
Creator:
Johnston, Christopher
Object Type:
Text
System:
The UNT Digital Library
Crowdsourcing biocuration: the Community Assessment of Community 1 Annotation with Ontologies (CACAO)
Article describing an approach to expand biocuration through crowdsourcing with undergraduates in the community-oriented wiki framework for GO annotation called the Gene Ontology Normal Usage Tracking System (GONUTS). This multiplies the number of high-quality annotations in international databases, enriches the coverage of the literature on normal gene function, and pushes the field in new directions.
Date:
October 28, 2021
Creator:
Ramsey, Jolene; McIntosh, Brenley; Renfro, Daniel; Aleksander, Susan A.; LaBonte, Sandra; Ross, Curtis et al.
Object Type:
Article
System:
The UNT Digital Library
Trypsin induces an aversive response in zebrafish by PAR2 activation in keratinocytes
Article using zebrafish as a model and identifies that trypsin induces an aversive response in zebrafish larvae and adult zebrafish. Results show that the trypsin activates PAR2 on keratinocytes signaling the brain, and this pathway of trypsin-induced escape response will provide a unique communication mechanism in zebrafish.
Date:
October 8, 2021
Creator:
Alsrhani, Abdullah; Raman, Revathi & Jagadeeswaran, Pudur
Object Type:
Article
System:
The UNT Digital Library
Survival, Growth, and Development in the Early Stages of the Tropical Gar Atractosteus tropicus: Developmental Critical Windows and the Influence of Temperature, Salinity, and Oxygen Availability
This article uses embryos and larvae of Atractosteus tropicus as a model to study fish survival, growth, and development as a function of temperature, salinity, and air saturation during developmental periods. Results suggest identifiable critical windows of development in the early ontogeny of A. tropicus and contribute to the knowledge of fish larval ecology and the interactions of individuals × stressors × time of exposure.
Date:
February 12, 2021
Creator:
Martínez, Gill; Peña, Emyr; Martínez, Rafael; Camarillo, Susana; Burggren, Warren W. & Álvarez, Alfonso
Object Type:
Article
System:
The UNT Digital Library
The mitochondrial localized CISD-3.1/CISD-3.2 proteins are required to maintain normal germline structure and function in Caenorhabditis elegans
Article isolating the cisd-3.2(pnIs68) mutant that resulted in physiological and fitness defects including germline abnormalities that are associated with abnormal stem cell niche and disrupted formation of bivalent chromosomes. Results further support the idea that the CISD protein family is required for mitochondrial function that supports important functions in animals including overall fitness and germline viability.
Date:
February 5, 2021
Creator:
King, Skylar D.; Gray, Chipo F.; Song, Luhua; Mittler, Ron & Padilla, Pamela A.
Object Type:
Article
System:
The UNT Digital Library
Turning turtle: scaling relationships and self-righting ability in Chelydra serpentina
Article investigating how shell morphology, neck length and self-righting biomechanics scale with body mass during ontogeny in Chelydra serpentina, which uses neck-powered self-righting.
Date:
March 3, 2021
Creator:
Ruhr, Ilan M.; Rose, Kayleigh A. R.; Sellers, William I.; Crossley, Dane A., II & Codd, Jonathan R.
Object Type:
Article
System:
The UNT Digital Library
A cytoskeletal function for PBRM1 reading methylated microtubules
This article shows that that the coordinated read-write activity of the epigenetic machinery extends to the cytoskeleton, with PBRM1 in the PBAF chromatin remodeling complex reading microtubule methyl marks written by the SETD2 histone methyltransferase. This article opens a previously unknown window into how chromatin remodeler defects can drive disease via both epigenetic and cytoskeletal dysfunction.
Date:
April 2, 2021
Creator:
Karki, Menuka; Jangid, Rahul K.; Anish, Ramakrishnan; Seervai, Riyad N. H.; Bertocchio, Jean-Phillipe; Hotta, Takashi et al.
Object Type:
Article
System:
The UNT Digital Library
Structural Modeling and in planta Complementation Studies Link Mutated Residues of the Medicago truncatula Nitrate Transporter NPF1.7 to Functionality in Root Nodules
This article combines in silico structural predictions with in planta complementation of the severely defective mtnip-1 mutant plants to understand the role of a series of distinct amino acids in the transporter’s function. The findings add to the knowledge of the mechanism of alternative conformational changes as well as symport transport in NPFs and enhance knowledge of the mechanisms for nitrate signaling.
Date:
July 1, 2021
Creator:
Yu, Yao-Chuan; Dickstein, Rebecca & Longo, Antonella
Object Type:
Article
System:
The UNT Digital Library
Substrate Specificity of LACCASE8 Facilitates Polymerization of Caffeyl Alcohol for C-Lignin Biosynthesis in the Seed Coat of Cleome hassleriana
This article finds that the transcript profile of the laccase gene ChLAC8 parallels the accumulation of C-lignin during seed coat development. Recombinant ChLAC8 oxidizes caffeyl and sinapyl alcohols, generating their corresponding dimers or trimers in vitro, but cannot oxidize coniferyl alcohol. The authors propose a basis for this substrate preference based on molecular modeling/docking experiments. Suppression of ChLAC8 expression led to significantly reduced C-lignin content in the seed coats of transgenic Cleome plants. Feeding of 13C-caffeyl alcohol to the Arabidopsis (Arabidopsis thaliana) caffeic acid o-methyltransferase mutant resulted in no incorporation of 13C into C-lignin, but expressing ChLAC8 in this genetic background led to appearance of C-lignin with >40% label incorporation. These results indicate that ChLAC8 is required for C-lignin polymerization and determines lignin composition when caffeyl alcohol is available.
Date:
October 9, 2020
Creator:
Wang, Xin; Zhuo, Chunliu; Xiao, Xirong; Wang, Xiaoqiang; Docampo-Palacios, Maite; Chen, Fang et al.
Object Type:
Article
System:
The UNT Digital Library
Cellular Plasticity in Response to Suppression of Storage Proteins in the Brassica napus Embryo
Article testing the tradeoff between protein and oil storage in oilseed crops by analyzing the effect of suppressing key genes encoding protein storage products (napin and cruciferin). This study provides mechanistic insights into the intriguing link between lipid and protein storage, which have implications for biotechnological strategies directed at improving oilseed crops.
Date:
April 30, 2020
Creator:
Rolletschek, Hardy; Schwender, Jorg; König, Christina; Chapman, Kent Dean; Romsdahl, Trevor; Lorenz, Christin et al.
Object Type:
Article
System:
The UNT Digital Library
Seedling Chloroplast Responses Induced by N-Linolenoylethanolamine Require Intact G-Protein Complexes
This article shows that the activity of N-linolenoylethanolamine (NAE 18:3) requires an intact G-protein complex. Specifically, genetic ablation of the Gβγ dimer or loss of the full set of atypical Gα subunits strongly attenuates an NAE-18:3–induced degreening of cotyledons in Arabidopsis (Arabidopsis thaliana) seedlings. This effect involves, at least in part, transcriptional regulation of chlorophyll biosynthesis and catabolism genes. In addition, there is feedforward transcriptional control of G-protein signaling components and G-protein interactors. These results are consistent with NAE 18:3 being a lipid signaling molecule in plants with a requirement for G-proteins to mediate signal transduction, a situation similar, but not identical, to the action of NAE endocannabinoids in animal systems.
Date:
July 14, 2020
Creator:
Yan, Chengshi; Cannon, Ashley E.; Watkins, Justin; Keereetaweep, Jantana; Khan, Bibi Rafeiza; Jones, Alan M. et al.
Object Type:
Article
System:
The UNT Digital Library