GERMIN3 regulates tuber initiation and axillary bud activation by facilitating plasmodesmatal gating.

ABSTRACT: GERMIN3 has previously been identified as a target of the tuberigen activation complex, suggesting a function in potato tuberisation, but its role is presently unknown. In the present study, we analysed morphological, agronomic and molecular phenotypes of GERMIN3 transgenic lines in Solanum tuberosum ssp. andigena and in the tuberosum cultivar Desiree. GERMIN3 over-expressing lines of S. tuberosum ssp. andigena exhibited increased tuber yields and enhanced tuber numbers. Post-harvest tuber sprouting exhibited greater bud activation with increased numbers of sprouts. Axillary buds were also activated in aerial tissues of mature plants, resulting in increased stem branching. Similar results were observed in the commercial cultivar Desiree. Over-expression of GERMIN3 had no impact on the expr

SUBMITTER: Campbell R 

PROVIDER: S-EPMC12038876 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature