The ¹⁴C-uptake method is the most common approach employed for estimating primary production in the ocean. Normalizing ¹⁴C-uptake to chlorophyll a and time yields a value termed the assimilation number, which is thought to reflect phytoplankton physiology. It is often assumed that the measured rate of ¹⁴C-uptake is between net...
Rapid Arctic warming is associated with important water cycle changes: sea ice loss, increasing atmospheric humidity, permafrost thaw, and water-induced ecosystem changes. Understanding these complex modern processes is critical to interpreting past hydrologic changes preserved in paleoclimate records and predicting future Arctic changes. Cyclones are a prevalent Arctic feature and...
We measured activity levels of cesium radioisotopes ¹³⁴Cs and ¹³⁷Cs in wild edible fungi, mineral soil, and surface litter of the west coast of North America from southern California to northern Vancouver Island after the Fukushima nuclear accident. All activity measurements were below governmental limits for human health. ¹³⁷Cs activity...
Consuming cruciferous vegetables such as broccoli sprouts, kale, Brussels sprouts, and bok choy is associated with several health benefits, such as a decreased risk of certain cancers. Cruciferous vegetables contain the glucosinolate, glucoraphanin (GFN). Cutting, chopping or chewing these vegetables releases the enzyme myrosinase, which transforms GFN into sulforaphane (SFN)....
Consuming cruciferous vegetables such as broccoli sprouts, kale, Brussels sprouts, and bok choy is associated with several health benefits, such as a decreased risk of certain cancers. Cruciferous vegetables contain the glucosinolate, glucoraphanin (GFN). Cutting, chopping or chewing these vegetables releases the enzyme myrosinase, which transforms GFN into sulforaphane (SFN)....
Fusarium crown rot (FCR) is one of the most widespread root and
crown diseases of wheat in the Pacific Northwest (PNW) of the United
States. Our objectives were to characterize crown rot severity and
distribution throughout the PNW by conducting a survey of 210 fields
covering the diverse dryland wheat-producing...
Studies of experimental grassland communities¹⁻⁷ have demonstrated
that plant diversity can stabilize productivity through species
asynchrony, in which decreases in the biomass of some species
are compensated for by increases in others[superscript 1,2]. However, it remains
unknown whether these findings are relevant to natural ecosystems,
especially those for which species...
Peroxiredoxins (Prxs) are very effective peroxide reducing enzymes, but also are susceptible to being
oxidatively inactivated by their own substrates. The level of sensitivity to such hyperoxidation varies
depending both on the enzyme involved and the type of peroxide substrate. For some Prxs, the
hyperoxidation has physiological relevance, so it...
Background: Peptide-conjugated phosphorodiamidate morpholino oligomers (PPMOs) are synthetic DNA/RNA analogs that silence expression of specific genes. We studied whether PPMOs targeted to essential genes in Acinetobacter lwoffii and A. baumannii are active in vitro and in vivo. Methods: PPMOs were evaluated in vitro using MIC and viability assays, and in...