Welcome! We are a diverse group of researchers and educators who study ecological and evolutionary aspects of symbiosis,
with a special focus on fungi. We use the tools of microbiology, ecology, molecular biology, and phylogenetics to examine fungal
biodiversity, the ecological roles and evolutionary importance of fungi, and the evolution of symbioses across the tree of life.
Our study sites range from tundra to rainforests, and our interests span bacterial symbionts of fungi to effects of soilborne molds
on tropical forest dynamics. Our projects are united by a passion for organismal biology, our interdisciplinary approach, and our
commitment to outreach and training junior scientists. Please feel free to contact us to learn more about our work and community.


A representative sample of the Arnold lab, fall 2016 Top row, left to right: Anyang Ndobegang, Ashton Leo, Jose Orozco, Aasiya H., Ming-min Lee, Naupaka Zimmerman, Nathaniel Yang. Second row from top: Joseph Myers, Peter Tellez (visiting from Tulane!), Ellen Pat, Shuzo Oita, Emma Jong. Second row from bottom: Kayla Garcia, Ale Ibarra, Emma Holland, Sequoia FIscher. Front row: Liz Bowman, Yu-Ling Huang, Betsy Arnold, Joe Spraker, Justin Shaffer. Not pictured: Alison Harrington, Jasmin Pratt, Brianna Talbot, Maithili Khandekar.

Contact us. Tel, 520.626.1035 • Fax, 520.621.3692
Mail and courier: School of Plant Sciences, 1140 E. South Campus Dr., Forbes 303, University of Arizona, Tucson, AZ 85721 USA
Email, click here. Betsy is jointly appointed in Ecology and Evolutionary Biology and curates the Robert L. Gilbertson Mycological Herbarium, part of the University of Arizona Campus Herbarium (ARIZ).