info:eu-repo/semantics/article
On the role of a Lipid-Transfer Protein: Arabidopsis ltp3 mutant is compromised in germination and seedling growth
Fecha
2015-10Registro en:
Pagnussat, Luciana Anabella; Oyarburo, Natalia Soledad; Cimmino, Carlos ; Pinedo, Marcela; de la Canal, Laura; On the role of a Lipid-Transfer Protein: Arabidopsis ltp3 mutant is compromised in germination and seedling growth; Taylor & Francis; Plant Signaling & Behavior; 10; 12; 10-2015; e1105417
1559-2324
Autor
Pagnussat, Luciana Anabella
Oyarburo, Natalia Soledad
Cimmino, Carlos
Pinedo, Marcela
de la Canal, Laura
Resumen
Plant Lipid-Transfer Proteins (LTPs) exhibit the ability to reversibly bind/transport lipids in vitro. LTPs have been involved in diverse physiological processes but conclusive evidence on their role has only been presented for a few members, none of them related to seed physiology. Arabidopsis seeds rely on storage oil breakdown to supply carbon skeletons and energy for seedling growth. Here, Arabidopsis ltp3 mutant was analysed for its ability to germinate and for seedling establishment. Ltp3 showed delayed germination and reduced germination frequency. Seedling growth appeared reduced in the mutant but this growth restriction was rescued by the addition of an exogenous carbon supply, suggesting a defective oil mobilization. Lipid breakdown analysis during seedling growth revealed a differential profile in the mutant compared to the wild type. The involvement of LTP3 in germination and seedling growth and its relationship with the lipid transfer ability of this protein is discussed.