A research team led by Florida State University identified four-stranded elements of DNA in corn that could affect thousands of genes, says an FSU release. DNA often is depicted as a double helix of two connected strands but the strands regularly separate so they can replicate genetic material, which can twist into shapes that include the four-strand G-quadruplex (G4). The researchers found the G-quadruplex in corn was located in specific areas of the DNA. “Given the strategic placement, the G4 is likely to perform some sort of function. Preliminary work showed that many of the genes identified were implicated in responses to energy crises within plant cells,” said FSU. The team believes the G4 elements help corn plants deal with stresses such as too little oxygen or low sugar.