Associate Professor, School of Integrative Plant Science Plant Pathology and Plant-Microbe Biology Section
I am a mycologist with a focus on the classification, evolution, and characterization of fungi, particularly those that cause newly characterized diseases. Fungi are a particularly poorly known group, with only about 5% of species formally described. My focus is in fungal biodiversity, especially of species that are pathogens of insects, and molds that spoil foods. I use molecular and morphological approaches to discover their relationships, devise classification systems, and understand factors that have driven their evolution. I direct the Cornell Plant Pathology Herbarium (CUP), a world-class collection that documents the biodiversity of fungi and plant disease organisms. I teach classes and do public outreach to build a greater understanding of fungi and their roles in our lives.
Fungal pathogens of insects
Research in my lab focuses on characterizing emerging fungal diseases. In 2018 we characterized Paecilomyces Rot of apples, a previously unknown disease of apples caused by Paecilomyces niveus. This fungus was previously known as a spoilage mold in processed fruit products. We demonstrated its heat resistance and ability to infect several apple cultivars, and sequenced its genome.
My research program focuses on the biodiversity and ecology of fungi. I have worked extensively on fungi that are associated with insects, and lately I have expanded my program to work on fungi that spoil foods. I use molecular biology and microscopic methods to investigate fungal relationships. I develop basic knowledge on the biodiversity of fungi, describing new species and genera, and construct resources to aid in their identification. I seek to understand the ecological roles of fungi, which inform ways it which we might either use or avoid them.
Outreach and Extension Focus
My outreach focuses on fungi, their diversity, and their impacts on us. It includes consultations in mushroom poisoning emergencies, questions about fungal roles and identification, and public lectures and forays. I coordinate the New York State "Peck" mushroom foray and edit the Cornell Mushroom Blog and an informational facebook page, @Cornell Fungi.
I aim to demystify fungi, including molds and mushrooms, and promote public appreciation of their key roles in the environment. I founded the successful Cornell Mushroom Blog to answer public demand for information about fungi, while also involving my students in outreach through writing about science for a general audience.
The Cornell Plant Pathology Herbarium serves science internationally by as a physical store of data on biodiversity, taxonomy, and nomenclature of fungi and other plant pathogens. We hold over 300,000 specimens and over 60,000 historical images of fungi and agriculture. In 2000 we began digitizing specimen records and images, an effort that's been federally funded since 2010. We moved from substandard facilities that were actively damaging to the collections into a newly renovated facility in 2007. We collaborate with other collections to make our data accessible, and loan specimens internationally to qualified scientists in support of fungal science.
Selected Journal Publications
- Biango-Daniels, M. N., & Hodge, K. T. (2018). Paecilomyces Rot: A New Apple Disease. Plant Disease. 102:1581-1587.
Presentations and Activities
- Food Fight: fungi in our food. Northeast Mycological Federation Foray (NEMF). July 2018. Northeast Mycological Federation. SUNY-Geneseo, Geneseo NY.
Awards & Honors
CALS Innovative Teacher Award (2013) CALS
I greatly enjoy teaching at both the undergraduate and graduate levels. I like to ignite a spark of wonder, and to connect students' understanding of fungi to what they already know about how the world works. A graduate-level class "Current Topics in Fungal Biology" (2003-2015) promoted critical thinking through analysis of scientific articles on fungi. My undergraduate classes have included "Medical and Veterinary Mycology" (2009-2014), an introduction to "Fungi "(2000-2007; 2011), a field class called "Mushrooms of Field and Forest" (1999-present), and starting in 2015 "Magical Mushrooms, Mischievous Molds." The latter course allows me to reach over 300 students each Spring semester, to help them understand fungi, disease, biotechnology, famine, and how policy affects food security, the environment, and health. My love of teaching also fuels my outreach efforts.
- PLSCI 2010: Magical Mushrooms, Mischievous Molds
- PLPPM 3190: Mushrooms of Field and Forest
401 Plant Science
Ithaca, NY 14853
kh11 [at] cornell.edu
School & Section
- Master of Science
- Bachelor of Science
University of Toronto
Kathie in the news
A new study for the first time describes a new apple disease, Paecilomyces rot, caused by a little-studied fungus.
Once dormant like a spore waiting for the right conditions to germinate, a club for fungi aficionados has been revived by a group of dedicated students. The Fantastic Fungi Fanatics (FFF) became an active club again last fall, with Rico Lin ’18...