biology

Early rice growers unwittingly gave barnyard grass a big hand, helping to give root to a rice imitator that is now considered one of the world’s worst agricultural weeds. The new research from biologist Kenneth Olsen in Arts & Sciences was published this week in Nature Ecology & Evolution.

A global study comparing 2,062 birds finds that, in highly variable environments, birds tend to have either larger or smaller brains relative to their body size. New research from Carlos Botero, assistant professor of biology in Arts & Sciences, finds birds with smaller brains tend to use ecological strategies that are not available to big-brained counterparts.

Researchers from the Tyson Research Center at Washington University in St. Louis and St. Louis College of Pharmacy have set up 34 motion-activated cameras to capture images of wildlife in area parks and green spaces. Students and volunteers help identify the species in an effort promote local biodiversity and improve the coexistence of humans and wildlife.

The Trump Administration’s proposed overhaul of the landmark Endangered Species Act will “hasten the extinction of countless species,” says Jonathan Losos, director of the Living Earth Collaborative at Washington University in St. Louis and an international biodiversity expert.

Research from Washington University in St. Louis finds that mutations of a gene implicated in long QT syndrome in humans may trigger seizures because of their direct effects on certain classes of neurons in the brain — independent from what the genetic mutations do to heart function. The new work from Arts & Sciences was conducted with fruit flies and is published August 8 in PLOS Genetics.

Biologist Lucia Strader in Arts & Sciences discovered a cellular transporter that links two of the most powerful hormones in plant development — auxin and cytokinin — and shows how they regulate root initiation and progression. Understanding why and how plants make different types of root architectures can help develop plants that better cope with distinct soil conditions and environments.

Biologists in Arts & Sciences have mapped the crystal structure of a key protein that makes the metabolites responsible for the bitter taste in cruciferous plants like mustard and broccoli. The results could be used along with ongoing breeding strategies to manipulate crop plants for nutritional and taste benefits.

New research by biologists in Arts & Sciences reveals the molecular machinery behind the high-intensity sweetness of the stevia plant. The results could be used to engineer new non-caloric products without the aftertaste that many associate with the sweetener marketed as Stevia.

A native mosquito in Missouri has fewer parasites when it shares its waters with an interloper, according to new research from biologists at Tyson Research Center, the environmental field station for Washington University in St. Louis.

Rory Mather has been awarded the 2019 Harrison D. Stalker Award from the Department of Biology in Arts & Sciences. The award is given annually to a graduating biology major whose undergraduate career combines outstanding scientific scholarship with significant contributions in the arts and humanities.