A genetic study of papaya sex chromosomes reveals that the hermaphrodite version of the plant, which is of most use to growers, arose as a result of human selection, most likely by the ancient Maya some 4,000 years ago.
Subsistence farmers in Africa, the Americas and the Caribbean are learning how to construct raised planting beds and install drip irrigation systems to boost their agricultural productivity, conserve water and perhaps even halt the rapid advance of desertification in some drought-prone regions.
Two University of Illinois professors have been elected fellows of the American Academy of Microbiology. Steven Blanke and Bryan White are among the 79 microbiologists chosen by their peers for this honor.
A new study offers insight into a process that could lead one species to diverge into two, researchers report in The American Naturalist.
A new drug that prompts cancer cells to self-destruct while sparing healthy cells is now entering phase I clinical trials in humans. The drug, called PAC-1, first showed promise in the treatment of pet dogs with spontaneously occurring cancers, and is still in clinical trials in dogs with osteosarcoma.
When exposed to nitrogen fertilizer over a period of years, nitrogen-fixing bacteria called rhizobia evolve to become less beneficial to legumes – the plants they normally serve, researchers report in a new study.