Journal Club

Highlighting recently published papers selected by Academy members

Category Archives: Genetics

Variation in a single gene increases plant yield in groups but not in pairs

Posted on March 27, 2020 by Carolyn Beans

Groups of diverse plant species often produce more seeds than monocultures. But whether plants ramp up yield in response to genetically distinct, direct neighbors, as opposed to a broader neighborhood of diverse plants, remains an open question in ecology. “It’s … Continue reading →

Rice gene could make “green revolution” plants greener by cutting back on fertilizer

Posted on March 6, 2020 by Carolyn Beans

The green revolution was launched, in large part, with rather squat plants. In the 1960s, farmers began using semidwarf varieties of wheat and rice that produced many grain-bearing branches known as tillers. When farmers added nitrogen fertilizer, the plants gained … Continue reading →

Molecular evidence supports Darwin’s adaptationist view, informing the debate over what drives evolution

Posted on February 28, 2020 by Amy McDermott

Myriad genetic differences distinguish the genomes of two species. What fraction of those differences arises by positive natural selection versus random genetic drift is a central question and topic of debate in evolutionary biology. A recent study in Nature Ecology … Continue reading →

Categories: Evolution | Genetics | Tagged adaptation, natural selection, negative selection, neutral theory of evolution, positive selection | Leave a comment

Study uncovers new privacy worries for direct-to-consumer DNA testing

Posted on February 14, 2020 by Amy McDermott

Genetic testing services let consumers analyze their DNA to learn about their heritage, their relatives, and their risk for certain heritable diseases. But access to such personal data hasn’t been without controversy, stoking privacy fears. A recent study in eLife … Continue reading →

Categories: Genetics | Journal Club | Tagged data privacy, genetic testing, heritability | Leave a comment

Genome of “mile-a-minute weed” hints at the secrets to its invasive success

Posted on February 7, 2020 by Amber Dance

The weedy vine Mikania micrantha, originally from Central and South America, has become a worldwide menace. Thus far, it’s spread to tropical climes in China and Southeast Asia, Australia, and islands of the Pacific and Indian Oceans, as well as … Continue reading →

Models shift blame for Neanderthal extinction away from modern humans

Posted on December 23, 2019 by Stephen Ornes

Neanderthals vanished about 40,000 years ago, but the reasons for their demise remain shrouded in mystery and a source of debate among archaeologists. The timing coincides with the arrival of modern humans in Europe, which has led some researchers to … Continue reading →

Potentially key gene has big role in natural variation of chloroplast size

Posted on November 22, 2019 by Amy McDermott

Worldwide populations of Arabidopsis thaliana all have the same genes, but they vary in many traits, including the size of their chloroplasts. A recent study in Plant Physiology identified one of the genes, FtsZ2-2, contributing to the natural variation in … Continue reading →

Categories: Agriculture | Genetics | Journal Club | Tagged Arabidopsis, chloroplast, FtsZ | Leave a comment

Common features of domestic animals suggest caveats to evolutionary theory

Posted on October 11, 2019 by Natasha Gilbert

White patches on fur coats, floppy ears, and curly tails are some of the traits frequently seen in domesticated animals. A group of researchers has now put forth a theory as to why these traits so often evolve in association … Continue reading →

Unlocking a mystery of seed development promises fatter, oilier oilseeds

Posted on August 30, 2019 by Amy McDermott

The canola cooking oil lining supermarket shelves comes from the seeds of Brassica napus, a weedy-looking plant in the mustard family. Farmers of this crop understandably want varieties that yield big, oily seeds. A recent study in The Plant Cell … Continue reading →

Categories: Agriculture | Genetics | Plant Biology | Tagged Arabidopsis, Brassica napus, canola, LEC2, oilseed rape, rapeseed, UPL3 | Leave a comment

Nitrogen-fixing bacteria talk to soybean roots via tiny RNAs, suggesting new avenue to improve yields

Posted on August 2, 2019 by Amber Dance

In order for soybean plants to get their necessary dose of nitrogen, they partner with bacteria called rhizobia, which can convert atmospheric nitrogen into organic forms the plant can use. But scientists don’t have the full picture of what facilitates … Continue reading →