Corrigendum: Integrating DNA Methylation and Gene Expression Data in the Development of the Soybean-Bradyrhizobium N2-Fixing Symbiosis - Davis-Richardson, Austin G.; Russell, Jordan T.; Dias, Raquel; McKinlay, Andrew J.; Canepa, Ronald; Fagen, Jennie R.; Rusoff, Kristin T.; Drew, Jennifer C.; Kolaczkowski, Bryan; Emerich, David W.; Triplett, Eric W. (Frontiers in Microbiology, 2016)