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Starch synthases SSIIa and GBSSI control starch structure but do not determine starch granule morphology in the absence of SSIIIa and SSIVb.

Plant molecular biology - 1 Mar 2022

Crofts Naoko, Domon Asaka, Miura Satoko, Hosaka Yuko, Oitome Naoko F, Itoh Ayaka, Noge Koji, Fujita Naoko

Abstract excerpt

KEY MESSAGE: High levels of two major starch synthases, SSIIa and GBSSI, in ss3a ss4b double mutant rice alter the starch structure but fail to recover the polygonal starch granule morphology. The endosperm starch granule is polygonal in wild-type rice but spherical in double mutant japonica rice lacking genes encoding two of the five major Starch synthase (SS) isozymes expressed in endosperm, SSIIIa and SSIVb....

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PMID: 34671919
DOI: 10.1007/s11103-021-01197-x

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-07.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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