The low temperature response pathways for cold acclimation and vernalization are independent

Bond, DM; Dennis, ES; Finnegan, EJ

The low temperature response pathways for cold acclimation and vernalization are independent

Bond, DM Dennis, ES

Finnegan, EJ

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Publication Type:: Journal Article
Citation:: Plant, Cell and Environment, 2011, 34 (10), pp. 1737 - 1748
Issue Date:: 2011-10-01

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Field	Value	Language
dc.contributor.author	Bond, DM	en_US
dc.contributor.author	Dennis, ES https://orcid.org/0000-0002-7850-591X	en_US
dc.contributor.author	Finnegan, EJ	en_US
dc.date.issued	2011-10-01	en_US
dc.identifier.citation	Plant, Cell and Environment, 2011, 34 (10), pp. 1737 - 1748	en_US
dc.identifier.issn	0140-7791	en_US
dc.identifier.uri	http://hdl.handle.net/10453/28753
dc.description.abstract	Vernalization is the promotion of flowering in response to the prolonged cold of winter. To survive sub-zero winter temperatures, plants must first acclimate to low, non-freezing temperatures (cold acclimation). Induction of VERNALIZATION INSENSITIVE 3 (VIN3), the first gene in the vernalization pathway, is initiated within the same time frame as the induction of genes in the cold acclimation pathway raising the question of whether there are common elements in the signal transduction pathways that activate these two responses to cold. We show that none of the signalling components required for cold acclimation, including the 'master regulator'INDUCTION OF CBF EXPRESSION1 (ICE1) or HIGH EXPRESSION OF OSMOTICALLY RESPONSIVE GENE1 (HOS1), which has been described as a link between cold acclimation and vernalization, play a role in VIN3 induction. We also show that the hormone abscisic acid (ABA) does not modulate VIN3 induction, consistent with earlier reports that ABA signalling plays no role in the vernalization response. The cold acclimation pathway is activated at 12°C, at which temperature there is no induction of VIN3 expression. Taken together, our data demonstrate that the responses to low temperatures leading to cold acclimation and vernalization are controlled by distinct signalling pathways. Changes in gene expression in the cold acclimation and vernalization pathways are initiated within the same time frame in response to low temperatures. This raises the question of whether these two responses induced by cold share components in their signal transduction pathways. Our data indicate that cold acclimation and vernalization use different pathways to signal change in gene expression. © 2011 Blackwell Publishing Ltd.	en_US
dc.relation.ispartof	Plant, Cell and Environment	en_US
dc.relation.isbasedon	10.1111/j.1365-3040.2011.02370.x	en_US
dc.subject.classification	Plant Biology & Botany	en_US
dc.subject.mesh	Arabidopsis	en_US
dc.subject.mesh	Flowers	en_US
dc.subject.mesh	Calcium	en_US
dc.subject.mesh	Abscisic Acid	en_US
dc.subject.mesh	DNA-Binding Proteins	en_US
dc.subject.mesh	Arabidopsis Proteins	en_US
dc.subject.mesh	Transcription Factors	en_US
dc.subject.mesh	DNA, Complementary	en_US
dc.subject.mesh	RNA, Plant	en_US
dc.subject.mesh	Acclimatization	en_US
dc.subject.mesh	Signal Transduction	en_US
dc.subject.mesh	Freezing	en_US
dc.subject.mesh	Time Factors	en_US
dc.subject.mesh	Cold Temperature	en_US
dc.subject.mesh	Stress, Physiological	en_US
dc.title	The low temperature response pathways for cold acclimation and vernalization are independent	en_US
dc.type	Journal Article
utslib.citation.volume	10	en_US
utslib.citation.volume	34	en_US
utslib.for	0607 Plant Biology	en_US
utslib.for	06 Biological Sciences	en_US
utslib.for	07 Agricultural and Veterinary Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
utslib.copyright.status	closed_access
pubs.issue	10	en_US
pubs.publication-status	Published	en_US
pubs.volume	34	en_US

Abstract:

Vernalization is the promotion of flowering in response to the prolonged cold of winter. To survive sub-zero winter temperatures, plants must first acclimate to low, non-freezing temperatures (cold acclimation). Induction of VERNALIZATION INSENSITIVE 3 (VIN3), the first gene in the vernalization pathway, is initiated within the same time frame as the induction of genes in the cold acclimation pathway raising the question of whether there are common elements in the signal transduction pathways that activate these two responses to cold. We show that none of the signalling components required for cold acclimation, including the 'master regulator'INDUCTION OF CBF EXPRESSION1 (ICE1) or HIGH EXPRESSION OF OSMOTICALLY RESPONSIVE GENE1 (HOS1), which has been described as a link between cold acclimation and vernalization, play a role in VIN3 induction. We also show that the hormone abscisic acid (ABA) does not modulate VIN3 induction, consistent with earlier reports that ABA signalling plays no role in the vernalization response. The cold acclimation pathway is activated at 12°C, at which temperature there is no induction of VIN3 expression. Taken together, our data demonstrate that the responses to low temperatures leading to cold acclimation and vernalization are controlled by distinct signalling pathways. Changes in gene expression in the cold acclimation and vernalization pathways are initiated within the same time frame in response to low temperatures. This raises the question of whether these two responses induced by cold share components in their signal transduction pathways. Our data indicate that cold acclimation and vernalization use different pathways to signal change in gene expression. © 2011 Blackwell Publishing Ltd.

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http://hdl.handle.net/10453/28753