NREL Plant Biologist Maureen McCann Named Senior Research Fellow

Feb. 21, 2025 | By Hannah Halusker | Contact media relations
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A person wearing safety goggles poses with their arms crossed in a lab.
Senior Research Fellow Maureen McCann poses with a mass spectrometer in a research lab. Photo by Agata Bogucka, NREL

The U.S. Department of Energy’s National Renewable Energy Laboratory (NREL) has selected Maureen McCann, an internationally renowned plant biologist, to its highest technical position for a scientist: Senior Research Fellow.

Of the more than 4,000 people who work at NREL, only 16 are current senior research fellows. Fellows are nominated by the leaders of NREL’s five research directorates, and recommendations from peer scientists play a large role in the selection process. In this prestigious role, McCann will advise NREL’s executive leadership on the strategic direction of laboratory research as it works toward advanced energy solutions.

“The role of senior research fellow carries great responsibility at NREL,” Laboratory Director Martin Keller said. “They are in the trenches every day, conducting and overseeing research while also keeping an eye on the bigger picture and evaluating our long-term approaches. Elevation to this position is a recognition of Maureen’s talent, experience, and leadership and our belief that she can help take the laboratory to new heights. Congratulations to a fellow biologist.”

McCann joined NREL in 2020 to direct the laboratory’s Biosciences Center. The center’s team of researchers aims to understand, predict, and control pathways and processes in living organisms to benefit the bioindustrial and agricultural sectors of the bioeconomy.

Before NREL, she was a professor of biological sciences and director of the NEPTUNE Center for Power and Energy at Purdue University. While there, she also led an Energy Frontier Research Center, the Center for Direct Catalytic Conversion of Biomass to Biofuels, in which NREL was a senior partner. 

In 2023, McCann took on a leadership role as associate director of the Renewable and Sustainable Energy Institute, a partnership between NREL and the University of Colorado Boulder.

Speaking on her new role, McCann said she is excited for this next phase of her work at NREL.

“I’m delighted and honored—it’s a little overwhelming—but can’t wait to step up to this new role and contribute my passion for how life sciences can be entrained for the bioeconomy and biomanufacturing,” McCann said.

A person on a podium speaking to a crowd.
Maureen McCann presents her research at the Senior Research Fellows Dinner. McCann was awarded the distinction prior to her talk at the event. Photo by Agata Bogucka, NREL

Her career of research uses biochemical, genetic, and molecular biology approaches to understand how the plant cell wall influences the final form and stature of plants. Using basic science to study the proteins and structural properties of the cell wall, McCann can engineer plants to be more productive and resilient for their use as sources of biofuels, chemicals, and materials.

She is widely cited for her 1990 Journal of Cell Science article, “Direct Visualization of Cross-Links in the Primary Plant Cell Wall,” a field-defining study where measurements were obtained, for the first time, by directly visualizing the primary cell wall of an onion using novel electron microscopy techniques.   

McCann’s work has also made advancements in the molecular basis of biomass recalcitrance, or the cell wall’s natural resistance to being broken down by microbes and enzymes. Converting plant biomass into usable sugars and aromatics, such as capturing glucose and xylose from cell wall polysaccharides, is an avenue to create economic value from heterogeneous waste streams. McCann’s discoveries on recalcitrance could help companies decrease energy inputs needed to prepare biomass for multiple conversion processes, therefore lowering the costs and making biofuel and biochemical production more efficient.

McCann has authored or co-authored more than 120 peer-reviewed journal articles and has a lifetime h-index of 65, with nearly 22,000 citations. She is a graduate of Churchill College at the University of Cambridge, where she obtained her bachelor’s and master’s degrees in natural sciences before gaining a Ph.D. in botany from the University of East Anglia.

Learn more about NREL’s science of biological energy conversion research that McCann will help lead.

Tags: Bioenergy,Staff Profile,Awards