Team Directory

Meet Our Team

The Plant-Microbe Interfaces (PMI) Scientific Focus Area is led by Laboratory Research Manager Mitch Doktycz, with Dale Pelletier and Dave Weston serving as Scientific Co-Managers. The PMI team includes investigators from the Biosciences Division (BSD) and the Environmental Science Division (ESD) at ORNL, and is complemented by core collaborators from the French National Research Institute for Agriculture, Food and the Environment (INRAE; Claire Veneault-Fourrey) and Duke University (Rytas Vilgalys). Contributors are listed below.

Members of PMI stand together.

Researchers and postdocs at the 2026 PMI Annual Meeting.

Project Leadership

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Mitch Doktycz

ORNL Corporate Fellow and Section Head of Bioimaging and Analytics.

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Dale Pelletier

Distinguished Scientist and Group Leader of Integrative Microbiomics.

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Dave Weston

Staff Scientist and Molecular Plant Physiologist in Plant Systems Biology

Science Team

Alyssa Carrel

Alyssa Carrell

Associate Staff Scientist in Plant Systems Biology

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Jay Chen

Staff Scientist and Group Leader of Plant Systems Biology

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KC Cushman

Distinguished Staff Fellow in Ecosystem Processes

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Bob Hettich

Distinguished Research Scientist and Group Leader of Bioanalytical Mass Spectrometry

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Dan Jacobson

Distinguished Research Scientist in Computational and Predictive Biology

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John Lagergren

Associate Staff Scientist in Plant Systems Biology

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Jenny Morrell-Falvey

Staff Scientist and Group Leader of Molecular and Cellular Imaging

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Mircea Podar

Distinguished Staff Scientist in Integrative Microbiomics

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Tomás Rush

Associate Staff Scientist in Synthetic Biology

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Chris Schadt

Senior Staff Scientist in Integrative Microbiomics

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Claire Veneault-Fourrey

Researcher at the French National Institute for Agricultural Research (INRAE)

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Rytas Vilgalys

Professor of Biology at Duke University

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Tim Tschaplinski

Distinguished Research Scientist and Section Head of Biodesign and Systems Biology.

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Jess Welch

Project manager and data steward.

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Xiaohan Yang

Senior Staff Scientist in Synthetic Biology

Postdoctoral Associates

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Delaney Beals

Postdoctoral Research Associate researching bacterial behaviors and interactions within the rhizosphere that are beneficial to Populus survival in Integrative Microbiomics

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Kate Bazany

A microbial ecologist with a PhD from Colorado State University researching the impact of drought on plant-microbial community composition, co-occurrence, and assembly in Integrative Microbiomics

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Julian Cosner

A biosystems scientist with a Ph.D. in Entomology, Plant Pathology, and Nematology with a focus in phenotypic responses in host selection and interactions in Synthetic Biology

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Shane Franklin

Postdoctoral Research Associate responsible for constructing microfluidic devices to examine microbial community organization in response to physical and chemical constraints in Molecular and Cellular Imaging

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Jonghyun Kim

Postdoctoral Research Associate focusing on metaproteome and metabolome measurements of constructed microbial communities to help decipher plant-microbiome interactions related to stress and resilience in Bioanalytical Mass Spectrometry

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Gabriela Madrid

A plant molecular and cellular biologist with a PhD from the University of Florida researching computational tools to uncover the molecular processes driving the interactions between Populus and its associated microbiome in Computational and Predictive Biology

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Bal Maharjan

Bal grew up in Nepal and received his PhD from Texas A&M University. Bal is designing and testing biosensors, facilitating high throughput screening of beneficial plant-microbe interactions, and functionally characterizing genes and pathways in Plant Systems Biology

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Mallory Morgan

Postdoctoral Research Associate investigating a systems biology approach to understanding genetic mechanisms underlying the Populus trichocarpa microbiome in Computational and Predictive Biology

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Mezanur Rahman

A plant and soil scientist with a PhD from Texas Tech University investigating abiotic stress–related experiments and integrating plant physiological responses with multi-omics datasets in both the presence and absence of microbial partners in Plant Systems Biology

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Yangyang Song

A plant ecophysiologist with a PhD from the University of Florida investigating how roots and rhizosphere interact with microbial community using multimodal imaging and omics in Plant Systems Biology