Plastidial Phosphorylase (Pho1a) is the dominant glucosyltransferase regulating starch granule initiation in potato tubers
Ciara O'Brien, Matthew Carswell, Aaron M. Rowland, Danielle Scarbrough, Xintong Huang, Brendan F. Fahy, Joerg Fettke, Jeffrey W. Habig, David Seung
This study identifies Pho1a as the key glucosyltransferase for starch granule initiation in potato tubers, showing that its knockout leads to abnormal granule morphology and size.
bioRxiv · Aug 26, 2026 · PreprintPlant Biology