Dr. White specializes in symbiosis research, particularly endophytic microbes. He is the author of more than 180 articles, and author and editor of reference books on the biology, taxonomy, and phylogeny of fungal endophytes, including Biotechnology of Acremonium Endophytes of Grasses (1994), Microbial Endophytes (2000), The Clavicipitalean Fungi (2004), The Fungal Community: Its Organization and Role in the Ecosystem (2005), and Defensive Mutualism in Microbial Symbiosis (2009). He and students in his lab are exploring diversity of endophytic microbes and the various impacts that they have on host plants.