Genetic Barrier to Self-Pollination Identified
The S-locus controls the specificity of the self-incompatibility interactions between pollen and pistil. Matching of the S-allele carried by the pollen with one of the two S-alleles carried by the pistil results in the growth arrest of the pollen tube in the style. Only pollen tubes that carry a different S-allele from the S-allele of the pistil will be able to grow down the style to the ovary to achieve fertilization.
Small, Cold, and Hungry: Ultra-Small Microbes from a 120,000-Year-Old Greenland-Glacier Ice Sample
Material from a 120,000-year-old Greenland Glacier ice sample showing micro-microbes (small white oblong forms) and larger materials.
Penn State Sophomore Wins Award for Cancer Research
Penn State Junior Wins Awards for Cancer Research
Penn State Senior Wins Fulbright Fellowship for Research in Germany
Team Including Penn State Researchers Announces Completed Gene Sequencing of Laboratory Rat
Photo credit: Martin Krzywinski
Discoveries Reveal That Gene Regulation Is Bipolar
In this composite image by Greg Grieco, Frank Pugh holds a glass slide with a DNA microarray (magnified to fill the image background)
Technology Developed at Penn State Licensed to Pharmaceutical Company
Consortium for Archaeal Genomics and Proteomics Established at Penn State
Sequencing of Bacterial Genome Reveals Distant Evolutionary Link to Plants
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