Current Group Members

Graduate Students
Emily Corbridge
lab: 509-33

I was born and raised in Jacksonville, Ilinois, and graduated from Illinois College in 2018 with a degree in Biology and German. After graduating, I worked in industry propagating and growing fruit trees and ornamental plants for almost 3 years before moving to Pullman. My 3 cats keep me busy, but I also enjoy running, hiking, camping, sewing, and board games.

Samuel Smalley


lab: 509-335-7740

Sam is from Cedar Hills, Utah, where he earned an undergraduate degree in botany from Utah Valley University. He then spent two years working in industry at an agricultural startup, where he oversaw experimental design as part of a research team specializing in producing wheatgrass hydroponically. He is now pursuing a PhD in plant biology at WSU studying stress response in genetically modified plants. He enjoys camping, movies, and travelling with his wife.

Marci Parra


lab: 509-335-7740

I am from Woodburn, Oregon. I got my undergraduate degree in biology from Whitman College in Walla Walla, WA, and I decided to come back to eastern Washington to pursue a PhD at WSU. I enjoy road trips, rom-coms, dancing, hiking, and knitting. 

Jake Green


lab: 509-335-7740

I am originally from Birmingham, Alabama but lived in Mobile, Alabama, for the past 5 years as I obtained my undergraduate degree in general biology and education. I really love hiking, camping, reading, embroidery, and watching horror movies!

Current Undergraduates

Jake Landers
Mackenzie Earl

Nina Palm


Sutton Mooney

lab: 509-335-7740

Sutton grew up in Raleigh, North Carolina, where she completed her undergraduate degree at NC State. She worked at Duke, UNC-CH, and various other places around the triangle area for a number of years before heading down to Austin, Texas to pursue doctoral work in microbiology. However, she ‘saw the green’ and joined the lab of Mark Estelle , who promptly moved to Bloomington, IN. Having survived 4 years in the mid-west working on auxin-regulated protein degradation, Sutton is happily broadening her scientific endeavors by working on all of the projects in the Hellmann lab. When not in lab she enjoys gardening, hiking, cross country skiing, and vacuuming up pet hair around the house.

Group Leader

 Hanjo Hellmann

    office: 509-335-2762/

    lab: 509-335-7740

Hanjo Hellmann studied biology in Kaiserslautern, Germany, before beginning his PhD thesis in the group of Wolf Frommer (Berlin and Tubingen, Germany). His focus was on sugar and amino acid signal transduction. After graduation in 1997, he continued to work on these topics as a group leader with Wolf Frommer. In 1999 he was awarded a two-year DFG fellowship, and joined the lab of Mark Estelle, then in Austin, TX. Here he began to work on E3 ligases and auxin. In 2002 he went back to Germany and started his own group as an Assistant Professor at the Freie University Berlin. In 2007 he decided to move back to the US and continue his research and teaching at Washington State University. His current scientific interests are located in the fields of metabolism and regulatory pathways that control stress tolerance. Outside of lab he likes to do bicycling and photography for which the larger region provides great opportunities.

Former Group Members 

Undergraduates at WSU:

Polly Karpushkina
Kyle Tucker
Sarah Gold
Alyssa Moore
Devin Lewis
Tiffany Hernandez
Ryan Lauta Landingin (TEAM mentoring program WSU)
Brian Decker
Brian Infinger
Alex Olson
Reem Tariq
Phirakny Chau (TEAM mentoring program WSU)
Bradley Shores

Diploma Students:
Marco Anders
Anja Liese
Aysegül Mutlu
Alexandra Rieck
Susan Wagner
Ujkan Ujkani

Masters candidates

Alex McGregor

Seth Stahl

PhD candidates:

Raed Al-Saharin
Yan Liu
Chase Beathard
Christina Choi
JooHyun Lee
Anne Bernhardt
Sascha Biedermann
Jan Erik Leuendorf
Henriette Weber

Postdoctoral Researchers:

Liyuan Chen


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