Erosion of functional independence early in the evolution of a microbial mutualism

Kristina L. Hillesland, Sujung Lim, Jason J. Flowers, Serdar Turkarslan, Nicolas Pinel, Grant M. Zane, Nicholas Elliott, Yujia Qin, Liyou Wu, Nitin S. Baliga, Jizhong Zhou, Judy D. Wall, David A. Stahl, W. Ford Doolittle