Sonia Gazzarrini

faculty_img Academic Title: Associate Professor

Campus: UTSC

CSB Appointment: Full

Primary Undergraduate Department:
Biological Sciences, UTSC

Graduate Programs:
Cell & Systems Biology

Titles and Honors
Academic or Administrative Appointments
Education:
Ph.D. Eberhard Karls University of Tuebingen, Germany 2000
M.Sc. University of Milan, Italy 1996
University of Milan, Italy 1994

 

Mailing Address
Department of Cell & Systems Biology
University of Toronto
1265 Military Trail
Scarborough, ON M1C 1A4
Canada

 

Contact Information
Office phone: 416-208-4824
Office: SY 222
Lab: SY 215
Lab phone: 416-287-7441
Email: gazzarrini@utsc.utoronto.ca
URL: http://www.utsc.utoronto.ca/~biosci/gazzarrini.html

 

Research Areas
Cell Biology
Developmental Biology
Functional Genomics
Genetics
Molecular Biology
Plant Biology

 

Research

Seeds constitute the majority of global food intake worldwide. Seeds of most temperate plant species show different degrees of dormancy and integrate a variety of endogenous and environmental signals to coordinate development and germinate under favorable conditions. Understanding the timing of dormancy break and germination is important from an agronomical point of view. Reduced dormancy causes “pre-harvest sprouting” in several crop varieties, which results in downgrading of grains, while increased dormancy delays germination and results in a shorter growth season. We study the molecular mechanisms that regulate the transition from dormancy to germination and the role that hormones, nutrients and abiotic stresses play in these processes. We use functional genomics, molecular and genetic approaches to identify and characterize key players involved in the regulation of dormancy and germination. Currently, we are characterizing protein complexes identified by yeast-two-hybrid and Bimolecular Fluorescence Complementation (BiFC) assays important for the regulation of these processes. We are also studying transcriptional and post-translational regulation of master regulators of seed development and germination in response to abiotic stresses and hormones in the model plant Arabidopsis.

 

Publications

2016

Top

ABA-dependent inhibition of the ubiquitin proteasome system during germination at high temperature in Arabidopsis.Chiu RS, Pan S, Zhao R, Gazzarrini S. Plant J. 2016 Dec;88(5):749-761. doi: 10.1111/tpj.13293.
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Inhibition of FUSCA3 degradation at high temperature is dependent on ABA signaling and is regulated by the ABA/GA ratio..Chiu RS, Saleh Y, Gazzarrini S. Plant Signal Behav. 2016 Nov;11(11):e1247137.
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2015

Top

Hormone cross-talk during seed germination.Gazzarrini S, Tsai AY. Essays Biochem. 2015;58:151-64. doi: 10.1042/bse0580151. Review.
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2014

Top

Trehalose-6-phosphate and SnRK1 kinases in plant development and signaling: the emerging picture.Tsai AY, Gazzarrini S.Front Plant Sci 2014;5:119
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2012

Top

Overlapping and distinct roles of AKIN10 and FUSCA3 in ABA and sugar signaling during seed germination.Tsai AY, Gazzarrini S.Plant Signal Behav 2012 Oct;7(10):1238-42
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The embryonic leaf identity gene FUSCA3 regulates vegetative phase transitions by negatively modulating ethylene-regulated gene expression in Arabidopsis.Lumba S, Tsuchiya Y, Delmas F, Hezky J, Provart NJ, Shi Lu Q, McCourt P, Gazzarrini S.BMC Biol. 2012;10:8
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The role of the Arabidopsis FUSCA3 transcription factor during inhibition of seed germination at high temperature.Chiu RS, Nahal H, Provart NJ, Gazzarrini S.BMC Plant Biol. 2012;12:15
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AKIN10 and FUSCA3 interact to control lateral organ development and phase transitions in Arabidopsis.Tsai AY, Gazzarrini S.Plant J. 2012 Mar;69(5):809-21
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2010

Top

The C-terminal domain of FUSCA3 negatively regulates mRNA and protein levels, and mediates sensitivity to the hormones abscisic acid and gibberellic acid in Arabidopsis.Lu QS, Paz JD, Pathmanathan A, Chiu RS, Tsai AY, Gazzarrini S.Plant J. 2010 Oct;64(1):100-13
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2006

Top

Additive contribution of AMT1;1 and AMT1;3 to high-affinity ammonium uptake across the plasma membrane of nitrogen-deficient Arabidopsis roots.Loqué D, Yuan L, Kojima S, Gojon A, Wirth J, Gazzarrini S, Ishiyama K, Takahashi H, von Wirén N.Plant J. 2006 Nov;48(4):522-34
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2005

Top

Crosstalk and abscisic acid: the roles of terpenoid hormones in coordinating developmentMcCourt P, Lumba S, Tsuchiya Y, Gazzarrini S. Physiologia Plantarum 2005 Feb;123(2):147-152 DOI: 10.1111/j.1399-3054.2005.00457.x

2004

Top

The transcription factor FUSCA3 controls developmental timing in Arabidopsis through the hormones gibberellin and abscisic acid.Gazzarrini S, Tsuchiya Y, Lumba S, Okamoto M, McCourt P.Dev. Cell 2004 Sep;7(3):373-85
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2003

Top

Cross-talk in plant hormone signalling: what Arabidopsis mutants are telling us.Gazzarrini S, McCourt P.Ann. Bot. 2003 May;91(6):605-12
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2001

Top

Genetic interactions between ABA, ethylene and sugar signaling pathways.Gazzarrini S, McCourt P. Curr Opin Plant Biol. 2001 Oct;4(5):387-91. Review.
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2000

Top

The molecular physiology of ammonium uptake and retrieval.von Wirén N, Gazzarrini S, Gojon A, Frommer WB. Curr Opin Plant Biol. 2000 Jun;3(3):254-61. Review.
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1999

Top

Three functional transporters for constitutive, diurnally regulated, and starvation-induced uptake of ammonium into Arabidopsis roots.Gazzarrini S, Lejay L, Gojon A, Ninnemann O, Frommer WB, von Wirén N.Plant Cell. 1999 May;11(5):937-48.
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