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963 Matching Results
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Replicate DNA metabarcoding can discriminate seasonal and spatial abundance shifts in river macroinvertebrate assemblages
Article asserts that the delivery of consistent and accurate fine-resolution data on biodiversity using metabarcoding promises to improve environmental assessment and research. The authors propose a novel hierarchical approach to recovering abundance information from metabarcoding, and demonstrate this technique using benthic macroinvertebrates.
Date:
March 31, 2023
Creator:
Bush, A.; Compson, Z.; Rideout, N. K.; Levenstein, B.; Kattilakoski, M.; Hajibabaei, M. et al.
Object Type:
Article
System:
The UNT Digital Library
Biocultural Calendars Across Four Ethnolinguistic Communities in Southwestern South America
Article describes how, since the mid-20th century, the so-called Great Acceleration has amplified processes of ecosystem degradation, extinction of biological species, displacement of local peoples, losses of languages, and cultural diversity. The authors examine cultural practices and socio-environmental changes across four contrasting ethnolinguistic communities in southwestern South America, from southern to northern Chile along a marked climatic gradient to show the broad application of the concept of biocultural calendars.
Date:
April 20, 2023
Creator:
Rozzi, Ricardo, 1960-; Álvarez, Ricardo; Castro, Victoria; Núñez, David; Ojeda, Jaime & Tauro, Alejandra
Object Type:
Article
System:
The UNT Digital Library
Survival rates in the world's southernmost forest bird community
Article asserts that the Magellanic sub-Antarctic Forest is home to the world's southernmost avian community and is the only Southern Hemisphere analogue to Northern Hemisphere temperate forests at this latitude. Authors describe annual survival patterns and their association with climate variables using a 20-year mark–recapture data set of five forest bird species in the Cape Horn Biosphere Reserve.
Date:
June 20, 2023
Creator:
Sandvig, Erik M.; Quilodrán, Claudio S.; Altamirano, Tomás A.; Aguirre, Francisco; Barroso, Omar; Rivero de Aguilar, Juan et al.
Object Type:
Article
System:
The UNT Digital Library
Whole-genome survey reveals extensive variation in genetic diversity and inbreeding levels among peregrine falcon subspecies
Article describes how, in efforts to prevent extinction, resource managers are often tasked with increasing genetic diversity in a population of concern to prevent inbreeding depression or improve adaptive potential in a changing environment. The authors used whole-genome resequencing to generate over two million single nucleotide polymorphisms (SNPs) from multiple individuals of all peregrine falcon subspecies.
Date:
July 20, 2023
Creator:
Johnson, Jeff A.; Athrey, Giridhar; Anderson, Clifford M.; Bell, Douglas A.; Dixon, Andrew; Kumazawa, Yoshinori et al.
Object Type:
Article
System:
The UNT Digital Library
Effects of cultivar and nitrogen application rate on lint, seed, oil, and protein yields of field-grown cotton
Article describes how the objective of this study was to evaluate the lint, seed, oil, and protein yield responses of cultivars with different seed mass and composition to N application rates (0–168 kg N ha−1) for field-grown cotton. The authors conclude that variability in the distribution of photosynthates to fiber and seed as well as seed oil and protein composition can significantly alter trends in fiber, seed, and seed component yields in response to cultivar or N application rates for field-grown cotton.
Date:
March 9, 2023
Creator:
Parkash, Ved; Snider, John L.; Bruce, Aaron; Ermanis, Alessandro; Virk, Gurpreet; Kaur, Navneet et al.
Object Type:
Article
System:
The UNT Digital Library
Homologues and homology and their related terms in phylogenetic systematics
Article describes how, in the field of phylogenetic systematics, the terms homology and homologue and their relationship to cladistic terms such as character, character state, synapomorphy and symplesiomorphy, as well as their relationships to each other, have been and are still discussed frequently. A recent re-emergence of concepts of homology/homologue free of any reference to explanatory hypotheses prompted the authors to explore these concepts and their relationships to each other as well as to the concept of morpheme, as introduced recently.
Date:
February 4, 2023
Creator:
Göpel, Torben & Richter, Stefan
Object Type:
Article
System:
The UNT Digital Library
Analysis of Pectin-derived Monosaccharides from Arabidopsis Using GC–MS
Article describes how pectin is a complex polysaccharide present in the plant cell wall, whose composition is constantly remodeled to adapt to environmental or developmental changes. Here, authors describe a quick and efficient gas chromatography–mass spectrometry (GC–MS)-based method that allows the differential analysis of pectin monosaccharide composition in plants under different conditions or between mutant plants and their respective wild types.
Date:
August 20, 2023
Creator:
Scholz, Patricia; Chapman, Kent Dean; Ischebeck, Till & Guzha, Athanas
Object Type:
Article
System:
The UNT Digital Library
Quantification of Botrytis cinerea Growth in Arabidopsis thaliana
Article describes how yield losses attributed to plant pathogens pose a serious threat to plant productivity and food security. Here, the authors describe two methods to quantify B. cinerea development in Arabidopsis thaliana genotypes through measurements of lesion development and quantification of fungal genomic DNA in infected tissues.
Date:
August 20, 2023
Creator:
Scholz, Patricia; Chapman, Kent Dean; Ischebeck, Till & Guzha, Athanas
Object Type:
Article
System:
The UNT Digital Library
Histological features of non-alcoholic fatty liver disease revealed in response to mixed vehicle emission exposure and consumption of a high-fat diet in wildtype C57Bl/6 male mice
Article describes how non-alcoholic fatty liver disease (NAFLD) is currently plaguing the population at pandemic proportions and is expected to become more prevalent over the next decade. The authors investigated the hypothesis that exposure to a mixture of gasoline and diesel engine emissions (MVE), coupled with the concurrent consumption of a HF diet, promotes the development of a NAFLD phenotype within the liver.
Date:
June 6, 2023
Creator:
Schneider, Leah J.; Santiago, Isabella; Johnson, Bailee; Stanley, Analana Hays; Penaredondo, Bea & Lund, Amie K.
Object Type:
Article
System:
The UNT Digital Library
The protein conformational basis of isoflavone biosynthesis
Authors of the article assert that isoflavonoids play important roles in plant defense and also exhibit a range of mammalian health-promoting activities. They emphasize that understanding the structural basis of isoflavone biosynthesis will facilitate the engineering of new bioactive isoflavonoids.
Date:
November 15, 2022
Creator:
Wang, Xiaoqiang; Pan, Haiyun; Sagurthi, Someswar; Paris, Vincent; Zhuo, Chunliu & Dixon, R. A.
Object Type:
Article
System:
The UNT Digital Library
Transgenic manipulation of triacylglycerol biosynthetic enzymes in B. napus alters lipid-associated gene expression and lipid metabolism
Article asserts that oilseed rape (Brassica napus) is an important crop that is cultivated for the oil (mainly triacylglycerol; TAG) it produces in its seeds. The author's results show that up-regulation of these key enzymes differentially affects lipid composition and distribution as well as lipid-associated gene expression, providing important information which could be used to improve crop properties by metabolic engineering.
Date:
March 1, 2022
Creator:
Liao, Pan; Lechon, Tamara; Romsdahl, Trevor; Woodfield, Helen K.; Fenyk, Stepan; Fawcett, Tony et al.
Object Type:
Article
System:
The UNT Digital Library
Prebiotic/probiotic supplementation resulted in reduced visceral fat and mRNA expression associated with adipose tissue inflammation, systemic inflammation, and chronic disease risk
Article describes how prebiotic/probiotic supplementation represents a viable option for addressing elevated systemic inflammation and chronic disease risk in overweight individuals. The key findings support that 90-day prebiotic/probiotic supplementation may be associated with reduced adipose tissue inflammation, reduced systemic inflammation, and reduced chronic disease risk.
Date:
November 28, 2022
Creator:
McFarlin, Brian K.; Tanner, Elizabeth A.; Hill, David W. & Vingren, Jakob L.
Object Type:
Article
System:
The UNT Digital Library
Metabolic reprogramming underlies cavefish muscular endurance despite loss of muscle mass and contractility
Article discusses the Mexican cavefish Astyanax mexicanus, has lost moderate-to-vigorous activity following cave colonization, reaching basal swim speeds ~3.7-fold slower than their river-dwelling counterpart. Collectively, the authors reveal broad skeletal muscle changes following cave colonization, displaying an adaptive skeletal muscle phenotype reminiscent to mammalian disuse and high-fat models while simultaneously maintaining a unique capacity for sustained muscle contraction via enhanced glycogen metabolism.
Date:
January 24, 2023
Creator:
Olsen, Luke; Levy, Michaella; Medley, J. Kyle; Hassan, Huzaifa; Miller, Brandon; Alexander, Richard et al.
Object Type:
Article
System:
The UNT Digital Library
Fatty acid amide hydrolase and 9-lipoxygenase modulate cotton seedling growth by ethanolamide oxylipin levels
Article asserts that polyunsaturated N-acylethanolamines (NAEs) can be hydrolyzed by fatty acid amide hydrolase (FAAH) or oxidized by lipoxygenase (LOX). Altogether, the authors conclude that the growth of cotton seedlings involves fine-tuning of 9-NAE-HOD levels via FAAH-mediated hydrolysis and LOX-mediated production, expanding the mechanistic understanding of plant growth modulation by NAE oxylipins to a perennial crop species.
Date:
December 6, 2022
Creator:
Gaguancela-Arias, Omar; Aziz, Mina & Chapman, Kent Dean
Object Type:
Article
System:
The UNT Digital Library
Genetic Differentiation of the South Florida Red-Shouldered Hawk (Buteo lineatus extimus) from the Nominate Subspecies (Buteo lineatus lineatus)
Article discusses how the south Florida subspecies of the Red-shouldered Hawk (Buteo lineatus extimus) is distinctly paler and smaller than other subspecies, reproduces at a lower rate, and can occupy very different habitats such as open marshes and grasslands with only scattered trees. The authors evaluated population differentiation between the south Florida population of Red-shouldered Hawks and two populations of eastern Red-shouldered Hawks (B. l. lineatus) in suburban (Cincinnati) and rural (Hocking Hills) environments in southern Ohio.
Date:
March 1, 2023
Creator:
Dykstra, Madeline A.; Marain, Donna M.; Wrona, Anna M.; Dysktra, Cheryl R.; Farrington, Heather L.; Johnson, Jeff A. et al.
Object Type:
Article
System:
The UNT Digital Library
Progress in understanding and improving oil content and quality in seeds
Article asserts that the world’s population is projected to increase by two billion by 2050, resulting in food and energy insecurity. This review provides a summary of the current knowledge of oil metabolism and discusses how photochemical activity and unconventional pathways can contribute to high carbon conversion efficiency in seeds.
Date:
January 26, 2023
Creator:
Sagun, Julius Ver; Yadav, Umesh P. & Alonso, Ana Paula
Object Type:
Article
System:
The UNT Digital Library
A metabolomic platform to identify and quantify polyphenols in coffee and related species using liquid chromatography mass spectrometry
Article describes how products of plant secondary metabolism, such as phenolic compounds, flavonoids, alkaloids, and hormones, play an important role in plant growth, development, stress resistance. The authors state that the overall goal of this study was to develop a high-throughput workflow to identify and quantify plant polyphenols.
Date:
January 6, 2023
Creator:
Castro-Moretti, Fernanda R.; Cocuron, Jean-Christophe; Castillo-Gonzalez, Humberto; Escudero-Leyva, Efrain; Chaverri, Priscila; Guerreiro-Filho, Oliveiro et al.
Object Type:
Article
System:
The UNT Digital Library
Scientists warning on the ecological effects of radioactive leaks on ecosystems
Article describes the devastating effects of nuclear radiation and its long-lasting consequences on Earth’s ecosystems. The authors call upon all scientists to communicate the importance of the environmental impacts of such an event to all life forms on Earth, including humankind.
Date:
January 20, 2023
Creator:
Bonacic, Cristián; Medellin, Rodrigo A.; Ripple, William; Sukumar, Raman; Ganswindt, Andre; Padua, Suzana M. et al.
Object Type:
Article
System:
The UNT Digital Library
Are Tourists Facilitators of the Movement of Free-Ranging Dogs?
Article discusses how free-ranging dogs are of major conservation concern worldwide as they negatively affect wildlife. Although scientists and governmental agencies are aware of the problem and responsible pet ownership strategies are beginning to be implemented, the tourism sector must be explicitly integrated into wildlife conservation management strategies.
Date:
December 16, 2022
Creator:
Schüttler, Elke & Jiménez, Jaime E.
Object Type:
Article
System:
The UNT Digital Library
The complexities of proanthocyanidin biosynthesis and its regulation in plants
Article describes how proanthocyanidins (PAs) are natural flavan-3-ol polymers that contribute protection to plants under biotic and abiotic stress, benefits to human health, and bitterness and astringency to food products. This review extends the conventional understanding with recent findings that provide new insights to address lingering questions and focus strategies for manipulating PA traits in plants.
Date:
November 26, 2022
Creator:
Yu, Keji; Song, Yushuang; Lin, Jinxing & Dixon, R. A.
Object Type:
Article
System:
The UNT Digital Library
A polar insect's tale: Observations on the life cycle of Parochlus steinenii, the only winged midge native to Antarctica
Article asserts that Antarctica and the sub-Antarctic islands include some of the world’s most extreme and pristine terrestrial habitats. The authors studied the habitat preferences and the life history of P. steinenii in Lake Kitiesh, Fildes Peninsula, King George Island over the austral summer seasons from 2014 to 2019, during short (several weeks) field expeditions.
Date:
December 24, 2022
Creator:
Mejias, Tamara Contador; Gañán, Melisa; Rendoll Cárcamo, Javier; Maturana, Claudia S.; Benítez, Hugo A.; Kennedy, James H. et al.
Object Type:
Article
System:
The UNT Digital Library
Transcriptomic profiling of miR-203a inhibitor and miR-34b-injected zebrafish (Danio rerio) validates oil-induced neurological, cardiovascular and eye toxicity response pathways
Article discusses how the global sequencing of microRNA (miRNA; miR) and integration to downstream mRNA expression profiles in early life stages (ELS) of fish following exposure to crude oil determined consistently dysregulated miRNAs regardless of the oil source or fish species. The overlay of differentially expressed miRNAs and mRNAs into in silico software determined that the key roles of these miRNAs were predicted to be involved in cardiovascular, neurological and visually-mediated pathways.
Date:
November 21, 2022
Creator:
Maguson, Jason T.; Leads, Rachel R.; McGruer, Victoria; Qian, Le; Tanabe, Philip; Roberts, Aaron P. et al.
Object Type:
Article
System:
The UNT Digital Library
Graduate Research Fellowship Program (GRFP): Landscape genetics of wild turkey (Meleagris gallopavo) in Texas
Data management plan for the grant, "Graduate Research Fellowship Program (GRFP): Landscape genetics of wild turkey (Meleagris gallopavo) in Texas."
Date:
2023-09-15/2028-08-31
Creator:
Gregory, Andrew & Molina, Clarissa
Object Type:
Text
System:
The UNT Digital Library
FERONIA and wall-associated kinases coordinate defense induced by lignin modification in plant cell walls
Article discusses authors' findings that through genetic screening for suppressors of defense gene induction in the low lignin ccr1-3 mutant of Arabidopsis thaliana, we found that loss of function of the receptor-like kinase FERONIA, although not restoring growth, affected cell wall remodeling and blocked release of elicitor-active pectic polysaccharides as a result of the ccr1-3 mutation. They determine that engineering plant cell walls will require development of ways to bypass endogenous pectin signaling pathways.
Date:
March 10, 2023
Creator:
Liu, Chang; Yu, Hasi; Voxeur, Aline; Rao, Xiaolan & Dixon, R. A.
Object Type:
Article
System:
The UNT Digital Library