dr. T (Tino) Kreszies

The Structure and Function of Suberized Root Barriers at the Root/Soil Interface

Roots play a central role in water and nutrient uptake, a process highly dependent on anatomical structures, growth conditions, and plant age. Suberin, a cell wall-associated biopolymer, is present in specific cell types such as the root endodermis and exodermis, as well as in bundle sheath cells and the periderm of woody species (cork) and tubers. Suberin serves as a crucial barrier, preventing uncontrolled passive water loss (e.g., during drought) and minimizing nutrient or oxygen loss (e.g., during flooding). It also provides protection from external stressors, including toxic metal concentrations and pathogens.

My research focuses on the "hidden half" of plants—their roots—exploring how they adapt and function under conditions of nutrient imbalances, drought, and flooding. Spanning experiments from lab to field scale, my work emphasizes plant physiology, particularly the structure and function of suberized root barriers at the root/soil interface. Additionally, I investigate cutin/wax barriers that define the plant/atmosphere interface. Overall, my research seeks to advance our understanding of plant resilience to environmental challenges, supporting the development of sustainable agricultural practices for a growing global population.

Plant Nutrition in a Changing Climate

Understanding mineral nutrient functions under shifting climate conditions is crucial for global food security, as more frequent flooding and droughts impact nutrient availability and uptake in plants. These nutrients are essential for physiological processes like photosynthesis, directly affecting crop yield and quality. My research focuses on optimizing nutrient use through precision fertilization to reduce environmental impact, along with exploring root anatomy and architecture to boost nutrient efficiency. Additionally, I am investigating methods such as intercropping with CSA colleagues to improve water and nutrient uptake, ultimately enhancing both productivity and sustainability in agriculture