Still Life
Commencement across Penn State: Spring 2012
Spring commencement 2012 under way
Penn State, Moroccan students problem-solve together
Finals Week Spring Semester 2012
Children explore career options at University Park
Painting the Lines at Beaver Stadium
Did They Get It Right? - RedTails
Iconic Penn State elm taken down over spring break 2012
We ... are Penn State (December 19, 2011)
Disease stricken matching elm tree slated for removal
Penn State's creamery, from the cow to the cone
Andrew Stephenson, a professor of biology at Penn State University, has been selected to receive the title of Distinguished Professor of Biology. Stephenson is recognized for his groundbreaking discoveries in the evolutionary biology of plants. His contributions to the understanding of Darwin's theories of sexual selection and the evolution of mating systems are recognized internationally and his work also affects broad areas of plant biology, including plant physiology and breeding. He has demonstrated that, regardless of the haphazard nature of pollen deposition, plants can exercise a great deal of control over which of the deposited pollen grains actually fertilize the ovules, which of the immature seeds mature, and which abort during development.
More information is online at http://www.science.psu.edu/news-and-events/2011-news/Stephenson3-2011 (more)
Genetically modified squash plants that are resistant to a debilitating viral disease become more vulnerable to a fatal bacterial infection, according to biologists. "Cultivated squash is susceptible to a variety of viral diseases and that is a major problem for farmers," said Andrew Stephenson, Penn State professor of biology. "Infected plants grow more slowly and their fruit becomes misshapen." (more)
