Journal article

Publication year: 2014

Pages: 1626-1640

Journal: Plant, Cell and Environment

Volume number: 37

Issue number: 7

ISSN: 0140-7791

DOI Link: https://doi.org/10.1111/pce.12278

Publisher: Wiley

Abstract: 
pPLA-I is the evolutionarily oldest patatin-related phospholipase A (pPLA) in plants, which have previously been implicated to function in auxin and defence signalling. Molecular and physiological analysis of two allelic null mutants for pPLA-I [ppla-I-1 in Wassilewskija (Ws) and ppla-I-3 in Columbia (Col)] revealed pPLA-I functions in auxin and light signalling. The enzyme is localized in the cytosol and to membranes. After auxin application expression of early auxin-induced genes is significantly slower compared with wild type and both alleles show a slower gravitropic response of hypocotyls, indicating compromised auxin signalling. Additionally, phytochrome-modulated responses like abrogation of gravitropism, enhancement of phototropism and growth in far red-enriched light are decreased in both alleles. While early flowering, root coils and delayed phototropism are only observed in the Ws mutant devoid of phyD, the light-related phenotypes observed in both alleles point to an involvement of pPLA-I in phytochrome signalling.

Harvard Citation style: Effendi, Y., Radatz, K., Labusch, C., Rietz, S., Wimalasekera, R., Helizon, H., et al. (2014) Mutants of phospholipase A (pPLA-I) have a red light and auxin phenotype, Plant, Cell and Environment, 37(7), pp. 1626-1640. https://doi.org/10.1111/pce.12278

APA Citation style: Effendi, Y., Radatz, K., Labusch, C., Rietz, S., Wimalasekera, R., Helizon, H., Zeidler, M., & Scherer, G. (2014). Mutants of phospholipase A (pPLA-I) have a red light and auxin phenotype. Plant, Cell and Environment. 37(7), 1626-1640. https://doi.org/10.1111/pce.12278