University of Potsdam Bioinformatics Team Launches GraFT Tool for Automated Spatiotemporal Mapping of Plant Actin Cytoskeletons

Researchers at the University of Potsdam launch GraFT, an automated tool to track and analyze the complex actin cytoskeleton networks in plant cells over time.

By: AXL Media

Published: Mar 31, 2026, 5:54 AM EDT

Source: Information for this report was sourced from University of Potsdam

Decoding the Structural Engine of the Plant Cell

The actin cytoskeleton functions as a sophisticated internal scaffolding system, composed of a dense web of protein filaments that dictate a cell’s shape, stability, and movement. Despite its fundamental importance to plant biology, the sheer complexity and constant motion of these filaments have historically made them difficult for researchers to map accurately. To address this limitation, bioinformatician Prof. Dr. Zoran Nikoloski and his team at the University of Potsdam have developed a new computational approach. Their tool, GraFT, represents a major leap forward by automating the identification and tracking of these delicate structures across time-resolved image data.

A Network Based Solution to Biological Complexity

At the core of the GraFT tool is a robust network-based methodology that transforms two-dimensional visual data into a dynamic mathematical graph. By treating the cytoskeleton as an evolving network rather than a static image, the software can trace the life cycle of individual filaments as they grow, shrink, and rearrange. This spatiotemporal analysis allows for a granular view of cellular dynamics that was previously impossible to achieve through manual observation. In rigorous trials using the model plant Arabidopsis thaliana, GraFT successfully mapped intricate filament networks, proving its reliability across a wide range of physiological conditions.

Uncovering Pathogen Tactics Through Cytoskeletal Shifts

One of the most significant applications of the GraFT tool is its ability to reveal how plant pathogens interact with their hosts at the cellular level. During experimental testing, the Potsdam researchers used the tool to observe how specific virulence factors—proteins used by pathogens to cause infection—altered the architecture of the actin cytoskeleton. These observations provide vital clues into how diseases disrupt plant tissue and how the plants, in turn, mount a defense. Understanding these microscopic skirmishes is essential for developing crops with higher resistance to the infections that currently cause massive agricultural losses.