Maciej Zwieniecki

Maciej Zwieniecki

Associate Professor

Department of Plant Sciences

Office Phone: 530-752-9880


Zwieniecki, an associate professor in the Department of Plant Sciences, specializes in whole plant physiology. He has a Ph.D. in forest ecology from Oregon State University, and joined UC Davis in 2012 from the Harvard University Arnold Arboretum.

Research interests:

Plant transport processes, biophysics, evolution of morphological traits, plant responses to abiotic stresses, using molecular tools in addressing questions relating to the biology of trees.

Brief overview:

My lab focuses on the interaction of trees with the environment and on the analysis of plant responses to abiotic environmental cues that include water, nutrients, and temperature. For example, our study on long-distance transport phenomena in trees (the movement of water, nutrients, and sugars within the tree’s vascular system) seeks to understand how plants optimize the use of resources to thrive in temporally and spatially variable environments (where different parts of the tree can experience different micro-environmental perturbations). This research will give us a better understanding of plant physiological processes and add predictive power to foresee changes in plant physiology in response to climate change. In California, this research can also help improve water and nutrient management practices in orchards.

Current projects:

  • Biophysical principles of xylem refilling
  • Evolution of leaf venation
  • Hydraulic properties of phloem and xylem
  • Plant response to abiotic stresses (water, temperature, nutrients)
  • Ecological physiology of trees


Updated August 2014


Plant Sciences:
Student News

Helping hands

Apr 16, 2018 Student volunteers serve the community in Monterey County

Student News - More Student News…
Research News

UC Davis Receives Unique, $1.5 Million Gift from Aggie Couple

Jul 07, 2016 Michael and Joelle Hurlston have pledged $1.5 million to endow a first-of-its-kind chair position.

Research News - More Research News…
Outreach News

Summer Internships

Jul 28, 2015 CA&ES students and Salinas Valley employers find common ground.

Outreach News - More Outreach News…
Web Editors

Content in this section is managed by Robin DeRieux. If you have any suggestions or need something changed, please contact her at