Publications by Frances C Sussmilch

Leaves, not roots or floral tissue, are the main site of rapid, external pressure-induced ABA biosynthesis in angiosperms

Feng-Ping Zhang, Frances Sussmilch, David S Nichols, Amanda A Cardoso, Timothy J Brodribb, Scott A M McAdam; Leaves, not roots or floral tissue, are the main site of rapid, external pressure-induced ABA biosynthesis in angiosperms, Journal of Experimental Botany, Volume 69, Issue 5, 23 February 2018, Pages 1261–1267, https://doi.org/10.1093/jxb/erx480

Rapid biosynthesis of abscisic acid (ABA) in the leaf, triggered by a decrease in cell volume, is essential for a functional stomatal response. However, it is not known whether rapid biosynthesis of ABA is also triggered in other…

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Leaves, not roots or floral tissue, are the main site of rapid, external pressure-induced ABA biosynthesis in angiosperms

Rapid biosynthesis of abscisic acid (ABA) in the leaf, triggered by a decrease in cell volume, is essential for a functional stomatal response. However, it is not known whether rapid biosynthesis of ABA is also triggered in other…

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Abscisic acid (ABA) and key proteins in its perception and signaling pathways are ancient, but their roles have changed through time

Homologs of the Arabidopsis core abscisic acid (ABA) signaling component OPEN STOMATA1 (OST1) are best known for their role in closing stomata in angiosperm species. We recently characterized a fern OST1 homolog, GAMETOPHYTES ABA INSENSITIVE ON ANTHERDIOGEN 1…

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What are the evolutionary origins of stomatal responses to abscisic acid in land plants?

The evolution of active stomatal closure in response to leaf water deficit, mediated by the hormone abscisic acid (ABA), has been the subject of recent debate. Two different models for the timing of the evolution of this response…

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Linking auxin with photosynthetic rate via leaf venation

Scott A M McAdam, Morgane P Eléouët, Melanie Best, Timothy John Brodribb, Madeline Rose Carins Murphy, Sam David Cook, Marion Dalmais, Theodore Dimitriou, Ariane Gelinas-Marion, Warwick M Gill, Matthew Hegarty, Julie M.I. Hofer, Mary Maconochie, Erin L McAdam, Peter McGuiness, David S Nichols, John J. Ross, Frances C. Sussmilch, Shelley Urquhart (2017) Linking auxin with photosynthetic rate via leaf venation. Plant Physiology DOI: https://doi.org/10.1104/pp.17.00535

Land plants lose vast quantities of water to the atmosphere during photosynthetic gas exchange. In angiosperms a complex network of veins irrigates the leaf, and it is widely held that the density and placement of these veins determines…

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What are the evolutionary origins of stomatal responses to abscisic acid in land plants?

Sussmilch, FC, Brodribb, TJ, McAdam, SAM (2017) What are the evolutionary origins of stomatal responses to abscisic acid in land plants? Journal of Integrative Plant Biology 59: 240-260

The evolution of active stomatal closure in response to leaf water deficit, mediated by the hormone abscisic acid (ABA), has been the subject of recent debate. Two different models for the timing of the evolution of this response…

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Up-regulation of NCED3 and ABA biosynthesis occur within minutes of a decrease in leaf turgor but AHK1 is not required.

Sussmilch, FC, Brodribb, TJ, McAdam, SAM (2017) Up-regulation of NCED3 and ABA biosynthesis occur within minutes of a decrease in leaf turgor but AHK1 is not required. Journal of Experimental Botany doi:10.1093/jxb/erx124

A major environmental signal influencing day-time stomatal aperture is the vapour pressure deficit between the leaf and atmosphere (VPD). In angiosperms, increased VPD triggers biosynthesis of abscisic acid (ABA), prompting rapid stomatal closure. Altered cell turgor has been…

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Stomatal responses to vapour pressure deficit are regulated by high speed gene expression in angiosperms

McAdam, S. A. M., Sussmilch, F. C., and Brodribb, T. J. (2016) Stomatal responses to vapour pressure deficit are regulated by high speed gene expression in angiosperms. Plant, Cell & Environment, 39: 485–491. doi: 10.1111/pce.12633.

Plants dynamically regulate water use by the movement of stomata on the surface of leaves. Stomatal responses to changes in vapour pressure deficit (VPD) are the principal regulator of daytime transpiration and water use efficiency in land plants….

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Molecular characterization of a mutation affecting abscisic acid biosynthesis and consequently stomatal responses to humidity in an agriculturally important species

Scott A. M. McAdam, Frances C. Sussmilch, Timothy J. Brodribb, and John J. Ross Molecular characterization of a mutation affecting abscisic acid biosynthesis and consequently stomatal responses to humidity in an agriculturally important species AoB PLANTS (2015) 7: plv091 doi:10.1093/aobpla/plv091

Mutants deficient in the phytohormone abscisic acid (ABA) have been instrumental in determining not only the biosynthetic pathway for this hormone, but also its physiological role in land plants. The wilty mutant ofPisum sativum is one of the classical, well-studied ABA-deficient…

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