Sexual reproduction only second choice for powdery mildew

Powdery mildew is one of the most dreaded plant diseases: The parasitic fungus afflicts crops such as wheat and barley and is responsible for large harvest shortfalls every year. Beat Keller and Thomas Wicker, both plant ...

Instant evolution in whiteflies: Just add bacteria

In just six years, bacteria in the genus Rickettsia spread through a population of the sweet potato whitefly (Bemisia tabaci), an invasive pest of global importance. Infected insects lay more eggs, develop faster and are ...

Virus genes help determine if pea aphids get their wings

Many of an organism's traits are influenced by cues from the organism's environment. These features are known as phenotypically plastic traits and are important in allowing an organism to cope with unpredictable environments.

Four new species of plume moths discovered in Bahamas

Deborah Matthews hunts for plume moths in darkness, waiting for the halo of her headlamp to catch a brief flicker. About the size of mosquitoes, the delicate, feathery moths fly only a few feet at a time. Matthews must watch ...

Study finds natural selection favors cheaters

Mutualisms, which are interactions between members of different species that benefit both parties, are found everywhere—from exchanges between pollinators and the plants they pollinate, to symbiotic interactions between ...

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