University of Georgia

The functional properties of animal food protein, especially from nutritional and health contexts, remain crucial to (food) product formulation/processing. Moreover, the increases in consumer awareness continue to push the food industry to seek alternatives to chemical food preservatives, particularly those natural approaches that extend the shelf life of animal (food) product(s). As such,plant-derived bioactive substances occupy an important space as promising additives for animal food products. Besides, the underlying mechanisms that advance the interactive progress of antioxidant/bioactive compounds within the plant food matrices remain debated. Indeed, understanding how myofibrillar proteins interact with the specific bioactive ingredients, i.e. biologically active compounds of plant origin, is of great importance, especially their antioxidants/microbial potentials operating as food additives given the eventual impact to modify the functionality/sensory features of the emergent animal food products. To supplement existing information, therefore, this terse review synthesizes some connections between polyphenol and myofibrillar proteins derived from plant-based sources, emphasizing their anti-microbial potentials. Overall, natural food additives may offer potential health benefits, but their usage comes with challenges, the latter of which animal food producers must carefully consider particularly the effectiveness of bioactive substances on (animal food) products’ safety, and consumer appeal.

Nut kernel color is a crucial quality indicator affecting the consumers first impression of the product. While growing evidence suggests that plant phenolics and their derivatives are linked to nut kernel color, the compounds (biomarkers) responsible for kernel color stability during storage remain elusive. Here, pathway-based metabolomics with machine learning algorithms were employed to identify key metabolites of postharvest pecan color stability. Metabolites in phenylpropanoid, flavonoid, and anthocyanin biosynthetic pathways were analyzed in the testa of nine pecan cultivars using liquid chromatography–mass spectrometry. With color measurements, different machine learning models were compared to find relevant biomarkers of pecan color phenotypes. Results revealed potential marker compounds that included flavonoid precursors and anthocyanidins as well as anthocyanins (e.g., peonidin, delphinidin-3-O-glucoside). Our findings provide a foundation for future research in the area, and will help select genes/proteins for the breeding of pecans with stable and desirable kernel color.

Increasing food sustainability and health benefits is essential to meet the demands of a growing global population while minimizing environmental impact. This study used a green two‐in‐one post pH‐driven processing strategy to develop a sustainable and healthy plant‐based milk alternative. It achieved both extraction and encapsulation in one step by directly incorporating the health‐promoting curcumin from turmeric into soymilk. A high processing efficiency was observed, 94.2% ± 1.6%, with a high extraction efficiency of 96.4% ± 0.5%. Using raw turmeric instead of a purified curcumin significantly enhanced the sustainability in the use of raw materials, for example, reducing the CO2‐eq emissions by 22 times and energy use by 10 times, even with a very small percentage of curcumin (∼0.03 wt%) in the formulation. This strategy underscores the importance of using raw materials and minimizing processing steps to develop more sustainable foods. Additionally, the incorporation of curcumin was found to impart a yellow color to soymilk. No significant changes were observed in other physicochemical properties like particle size, zeta potential, and melting behavior, as most curcumin molecules were encapsulated within the lipid phase of soymilk. The curcumin‐infused soymilk powders also maintained excellent storage stability for 1 month under freezing temperature.

The American alligator (Alligator mississippiensis) is a keystone species of the southeastern United States. In December of 2022, a free-ranging American alligator was found stuporous and tetraparetic. On postmortem evaluation, lesions were limited to the central nervous system, consisting of prominent perivascular cuffs of lymphocytes and histiocytes that extended into the surrounding neuroparenchyma along with gliosis. Next-generation sequencing of the affected brain identified the presence of a piscichuvirus closely related to the freshwater turtle neurovirus 1 (FTuNV-1) recently reported in an alligator snapping turtle with similar microscopic lesions. In situ hybridization using zz-probes that recognize FTuNV-1 identified widespread hybridization signal in neurons and glial cells in the alligator’s brain and spinal cord. This case represents only the second association of piscichuviruses with vertebrate disease. Moreover, it highlights the potential for disease transmission between different orders (Crocodylia and Testudines) of free-ranging aquatic reptiles that share similar habitats in the United States.

A strong research program is crucial for academic faculty, as it influences promotions, tenure, salary raises, and professional recognitions/awards. We summarize relative journal rating/ranking metrics from multiple sources, and for selected journals commonly targeted by agricultural economists, to provide insights on their perceived value. We also present combined results from a survey, measuring perceptions of agricultural economists in the US regarding research quantity/quality expectations for tenure/promotion, and actual research metrics from CVs of faculty in US higher education institutions who recently received tenure. We hope this article provides useful insights for junior faculty to better understand the assessment of their research output.

The Alzheimer's disease and Parkinson's disease risk locus FYN kinase is implicated in neurodegeneration and inflammatory signaling. To investigate in vivo mechanisms of Fyn-driven neurodegeneration, we built a zebrafish neural-specific Gal4:UAS model of constitutively active FynY531F signaling. Using in vivo live imaging, we demonstrated that neural FynY531F expression leads to dopaminergic neuron loss and mitochondrial aggregation in 5 day larval brain. Dopaminergic loss coincided with microglia activation and induction of tnfa, il1b and il12a inflammatory cytokine expression. Transcriptome analysis revealed Stat3 signaling as a potential Fyn target. Chemical inhibition experiments confirmed Fyn-driven dopaminergic neuron loss, and the inflammatory response was dependent upon activation of Stat3 and NF-κB pathways. Dual chemical inhibition demonstrated that Stat3 acts synergistically with NF-κB in dopaminergic neuron degeneration. These results identify Stat3 as a novel downstream effector of Fyn signaling in neurodegeneration and inflammation.

Elective undergraduate courses are offered at the University of Georgia and the University of Florida that explore veterinary careers, offer guidance on being a successful veterinary school applicant, and expose students to the reality of the profession through guest speakers. Students ( N = 276) from both universities responded to a survey offered at the first and last class period over the course of five semesters. Using 100-point Likert scales, students were asked to gauge their opinion of and interest in the profession and demonstrate their confidence in various aspects of building a successful application. Data were analyzed as a randomized complete block design with survey completion time as the fixed effect. After completing the course, students showed decreased ( p < .01) interest in becoming a veterinarian and a reduced ( p = .01) opinion of the profession. Despite these decreases, student perception ratings remained in the positive range in both categories. Student opinions of financial commitment, veterinarian mental health, and diversity did not change ( p > .20) after taking the course, though ratings in these categories were neutral to somewhat negative. The post survey revealed students demonstrated more confidence in applying to veterinary school ( p < .01), including understanding academic requirements, identifying ideal references, composing a statement of purpose, and gaining veterinary experience ( p < .01). The survey demonstrated the benefits of a career exploration class for pre-veterinary students by increasing applicant confidence and showed that challenges facing the profession may influence the applicant pool.

There is a long history of research on the topic of mate selection using college student samples. Much of this research focuses on desired partner characteristics using an instrument developed in 1939. While the data accrued over more than three-quarters of a century have provided insights about the ways in which evolving cultural values influence the importance of these characteristics, there has been little research on how well this list of characteristics reflects contemporary mate selection criteria. The current study addresses this gap in the research in two ways, First, an expanded list of partner characteristics, more reflective of contemporary mate selection criteria, was developed. Second, a constrained approach in assigning value to each characteristic was employed in order to assess the relative importance of each characteristic. Results indicate that several of the new characteristics were significantly more important than some in the original measure, demonstrating a need for an update to the 1939 instrument. Additionally, when choices were constrained, a clearer picture of priorities emerged. Finally, results produced categories of desired mate characteristics identified as deal breakers, necessities, preferences, luxuries, and unimportant.

Three-factor models of narcissism (Agentic, Neurotic, and Antagonistic Narcissism) have gained widespread recognition in the field. The Five-Factor Narcissism Inventory (FFNI) stands out as the most comprehensive and only tool to date that assesses all three narcissism domains. However, its validation in Chinese culture and forensic contexts remains largely unexplored. With community (N = 578) and offender (N = 726) samples from China, we examined 60-, 30-, and 15-item versions of the Chinese FFNI in terms of internal structure, external associates, and consistency across samples and versions. Our findings demonstrate acceptable internal consistencies and structural validity of each version of the Chinese FFNI, albeit with minor deviations in the Neurotic Narcissism factor. The FFNI demonstrated good cross-sample and cross-version consistency. These results suggest the utility of the FFNI in Chinese samples and suggest some comparability across community and offender groups.

Chiggers are larval mites that pose a significant health risk globally via the spread of scrub typhus. However, fundamental studies into the bacterial microbiome in North America have never been considered. In this investigation, chiggers were collected in the wild from two locally common rodent host species (i.e., Sigmodon hispidus and Peromyscus leucopus) in three different ecoregions of North Carolina (NC), United States to investigate the composition of their bacterial communities, including potential pathogens. DNA was extracted from the chiggers, and the V3-V4 regions of the bacterial 16S rRNA gene were sequenced using next-generation sequencing (NGS). Alpha diversity metrics revealed significant differences in bacterial diversity among different collection counties. Beta diversity metrics also revealed that bacterial communities across counties were significantly different, suggesting changes in the microbiome as the environment changed. Specifically, we saw that the two western NC collection counties had similar bacterial composition as did the two eastern collection counties. In addition, we found that the chigger microbiome bacterial diversity and composition differed between rodent host species. The 16S rRNA sequence reads were assigned to 64 phyla, 106 orders, 199 families, and 359 genera. The major bacterial phylum was Actinobacteria. The most abundant species were in the genera Corynebacterium, Propionibacterium, class ZB2, and Methylobacterium. Sequences derived from potential pathogens within the genera Orientia and Rickettsia were also detected. Our findings provide the first insights into the ecology of chigger microbiomes in the US. Further research is required to determine if the potential pathogens found detected in chiggers are a threat to humans and wildlife.

In modern nonmarine settings, previous studies have demonstrated the importance of elevation-correlated ecological gradients, but such studies tend to focus on relatively small areas and only one higher taxon. Here, we analyze Global Biodiversity Information Facility occurrence records from a wide variety of taxa across the southeastern U.S. coastal plain. Many taxa display ecological gradients (gradients in proportional or relative abundance) correlated with elevation, distance to the coast, and latitude. These gradients tend to be steepest within a few tens of kilometers near the coast and at elevations less than 25 m. Some taxa, notably terrestrial mammals, do not display gradients correlated with elevation and distance to the coast. The small sample sizes of these groups and their heterogeneous sampling raise concerns about whether sufficient data exist. Coupled with previous studies of these ecological gradients, their common presence over distances of tens to hundreds of kilometers and elevations of tens to hundreds of meters suggests they are likely important in the nonmarine fossil record. Because elevation and distance to the coast change predictably with cycles of accommodation and sediment flux, these ecological gradients are predicted to occur in the nonmarine stratigraphic record, especially through intervals that record transgression or regression. Such gradients will affect the local composition of species associations and occurrences, even in the absence of regional species origination, immigration, and extinction and of regional change in the structure of ecological gradients. The ordination of taxon counts in stratigraphically limited samples has great potential for establishing their existence.