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Impacts of seasonality on mercury concentrations, polyunsaturated fatty acids, and stable isotopes: implications for the use of tetragnathid spiders as sentinels.
Environ Toxicol Chem
January 2025
Molecular Biosciences PhD Program, Middle Tennessee State University, Murfreesboro, TN, United States.
Riparian spiders are used in ecotoxicology as sentinels of bioavailable contaminants that are transferred from aquatic to terrestrial habitats via emergent aquatic insects. Spiders in the family Tetragnathidae are particularly of interest because a high proportion of their diet consists of emergent aquatic insects and their contaminant loads reflect the amount transferred through the food web to riparian predators. The transfer of contaminants can be determined through food web tracers such as stable isotopes and polyunsaturated fatty acids; however, it is unclear how contaminants and tracers vary over the course of a year.
View Article and Find Full Text PDFEnhanced efficiency fertilizers, potato production, and nitrate leaching in the Wisconsin Central Sands.
J Environ Qual
January 2025
Department of Soil Science, University of Wisconsin-Madison, Madison, Wisconsin, USA.
Maintaining yield goals while reducing nitrate-nitrogen (NO-N) leaching to groundwater is a challenge for potato (Solanum tuberosum) production in the Wisconsin Central Sands as well as across the United States. The objectives of this study were to quantify the effect of conventional and enhanced efficiency nitrogen (N) fertilizers on NO-N leaching, crop yield, and N uptake in potatoes. We compared five N treatments, which include a 0 N control and 280 kg ha as ammonium sulfate and ammonium nitrate (AS/AN), polymer-coated urea (PCU), urea with a urease inhibitor (Urea+UI), or urea with a UI and a nitrification inhibitor (Urea+UI+NI).
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Plant Cell Rep
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Department of Plant Biology and Biotechnology, Faculty of Biotechnology and Horticulture, University of Agriculture in Krakow, al. Mickiewicza 21, 31-120, Krakow, Poland.
Carrot callus grown on a medium with increased nitrogen have reduced carotenoid accumulation, changed gene expression, high amount of vesicular plastids and altered cell wall composition. Carotenoid biosynthesis is vital for plant development and quality, yet its regulation under varying nutrient conditions remains unclear. To explore the effects of nitrogen (N) availability, we used carrot (Daucus carota L.
View Article and Find Full Text PDFUnveiling the role of microRNAs in nonhost resistance to Sclerotinia sclerotiorum: Rice-specific microRNAs attack the pathogen via cross-kingdom RNAi.
J Integr Plant Biol
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Integrative Science Center of Germplasm Creation in Western China (Chongqing) Science City & Southwest University, College of Agronomy and Biotechnology, Southwest University, Chongqing, 400715, China.
The development of rapeseed with high resistance against the pathogen Sclerotinia sclerotiorum is impeded by the lack of effective resistance resources within host species. Unraveling the molecular basis of nonhost resistance (NHR) holds substantial value for resistance improvement in crops. In the present study, small RNA sequencing and transcriptome sequencing were carried out between rice (a nonhost species of S.
View Article and Find Full Text PDFEvaluation of Probiotic Effects on the Growth Performance and Microbiome of Nile Tilapia () in a High-Density Biofloc System.
Aquac Nutr
January 2025
School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, Alabama 36849, USA.
Biofloc technology is an aquaculture production system that has gained popularity with tilapia production. Probiotics provide benefits for the host and/or aquatic environments by both regulating and modulating microbial communities and their metabolites. When a probiotic feed is combined with a biofloc system, the production amount may be improved through better fish growth, disease resistance, and/or improved water quality by reducing organic matter and stabilizing metrics such as pH and components of the nitrogen cycle.
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