Journal article

Arabidopsis DEFECTIVE KERNEL1 regulates cell wall composition and axial growth in the inflorescence stem

Dhika Amanda, Monika S Doblin, Colleen P MacMillan, Roberta Galletti, John F Golz, Antony Bacic, Gwyneth C Ingram, Kim L Johnson

PLANT DIRECT | JOHN WILEY & SONS LTD | Published : 2017

Abstract

Axial growth in plant stems requires a fine balance between elongation and stem mechanical reinforcement to ensure mechanical stability. Strength is provided by the plant cell wall, the deposition of which must be coordinated with cell expansion and elongation to ensure that integrity is maintained during growth. Coordination of these processes is critical and yet poorly understood. The plant-specific calpain, DEFECTIVE KERNEL1 (DEK1), plays a key role in growth coordination in leaves, yet its role in regulating stem growth has not been addressed. Using plants overexpressing the active CALPAIN domain of DEK1 (CALPAIN OE) and a DEK1 knockdown line (amiRNA-DEK1), we undertook morphological, bi..

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Grants

Awarded by ARC Centre of Excellence in Plant Cell Walls grant


Awarded by ERC


Funding Acknowledgements

ARC Centre of Excellence in Plant Cell Walls grant, Grant/Award Number: CE1101007; Agence Nationale de la Recherche; ERC consolidator, Grant/Award Number: 307387