Plant Cell Shapes Used to Infer Recent Cell Divisions

Focusing on angles at the shared wall between daughter cells

The group reported analyzing 49 shape features in 7,573 adjacent-cell pairs, using live imaging of Arabidopsis leaf primordia as reference data. It identified the junction angle at the ends of a cell wall shared by daughter cells as the most useful feature. With an average junction-angle threshold of 145° or greater, it reported 94.1% precision and 92.5% recall; in shoot apical meristems, it reported 98.4% precision and 97.2% recall.

The researchers describe analyzing plant cell-division direction as requiring substantial time and consideration of experimental conditions. The supplied material does not provide a directly comparable prior accuracy measure.

The group says it established and quantitatively tested a way to infer recent plant-cell divisions from a single stained microscopy image, using cell-wall junction angles as a key feature. It also reported releasing analysis software and showing potential applications in mutants and non-model plants.

If the reported results hold, a single microscopy image could provide a way to reconstruct recent cell-division patterns without observing the divisions live. The reported validation ties the inference to live-imaging reference data, while the announced software could make the approach available for further study.