Evidence for a SAL1-PAP Chloroplast Retrograde Pathway That Functions in Drought and High Light Signaling in Arabidopsis
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Estavillo, Gonzalo; Crisp, Peter; Pornsiriwong, Wannarat; Wirtz, Markus; Collinge, Derek; Carrie, Chris; Giraud, Estelle; Whelan, James M; David, Pascale; Javot, Helene; Brearley, Charles; Hell, Ruediger; Marin , Elena; Pogson, Barry
Description
Compartmentation of the eukaryotic cell requires a complex set of subcellular messages, including multiple retrograde signals from the chloroplast and mitochondria to the nucleus, to regulate gene expression. Here, we propose that one such signal is a phosphonucleotide (3'-phosphoadenosine 5'-phosphate [PAP]), which accumulates in Arabidopsis thaliana in response to drought and high light (HL) stress and that the enzyme SAL1 regulates its levels by dephosphorylating PAP to AMP. SAL1 accumulates...[Show more]
dc.contributor.author | Estavillo, Gonzalo | |
---|---|---|
dc.contributor.author | Crisp, Peter | |
dc.contributor.author | Pornsiriwong, Wannarat | |
dc.contributor.author | Wirtz, Markus | |
dc.contributor.author | Collinge, Derek | |
dc.contributor.author | Carrie, Chris | |
dc.contributor.author | Giraud, Estelle | |
dc.contributor.author | Whelan, James M | |
dc.contributor.author | David, Pascale | |
dc.contributor.author | Javot, Helene | |
dc.contributor.author | Brearley, Charles | |
dc.contributor.author | Hell, Ruediger | |
dc.contributor.author | Marin , Elena | |
dc.contributor.author | Pogson, Barry | |
dc.date.accessioned | 2015-12-10T22:22:01Z | |
dc.identifier.issn | 1040-4651 | |
dc.identifier.uri | http://hdl.handle.net/1885/52470 | |
dc.description.abstract | Compartmentation of the eukaryotic cell requires a complex set of subcellular messages, including multiple retrograde signals from the chloroplast and mitochondria to the nucleus, to regulate gene expression. Here, we propose that one such signal is a phosphonucleotide (3'-phosphoadenosine 5'-phosphate [PAP]), which accumulates in Arabidopsis thaliana in response to drought and high light (HL) stress and that the enzyme SAL1 regulates its levels by dephosphorylating PAP to AMP. SAL1 accumulates in chloroplasts and mitochondria but not in the cytosol. sal1 mutants accumulate 20-fold more PAP without a marked change in inositol phosphate levels, demonstrating that PAP is a primary in vivo substrate. Significantly, transgenic targeting of SAL1 to either the nucleus or chloroplast of sal1 mutants lowers the total PAP levels and expression of the HL-inducible ASCORBATE PEROXIDASE2 gene. This indicates that PAP must be able to move between cellular compartments. The mode of action for PAP could be inhibition of 5' to 3' exoribonucleases (XRNs), as SAL1 and the nuclear XRNs modulate the expression of a similar subset of HL and drought-inducible genes, sal1 mutants accumulate XRN substrates, and PAP can inhibit yeast (Saccharomyces cerevisiae) XRNs. We propose a SAL1-PAP retrograde pathway that can alter nuclear gene expression during HL and drought stress. | |
dc.publisher | American Society of Plant Biologists | |
dc.source | The Plant Cell | |
dc.subject | Keywords: adenosine 3' phosphate 5' phosphate; adenosine 3'-phosphate-5'-phosphate; adenosine diphosphate; APX2 protein, Arabidopsis; Arabidopsis protein; ascorbate peroxidase; exoribonuclease; nucleotidase; RAT1 protein, S cerevisiae; Saccharomyces cerevisiae prot | |
dc.title | Evidence for a SAL1-PAP Chloroplast Retrograde Pathway That Functions in Drought and High Light Signaling in Arabidopsis | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 23 | |
dc.date.issued | 2011 | |
local.identifier.absfor | 060705 - Plant Physiology | |
local.identifier.ariespublication | u4956746xPUB247 | |
local.type.status | Published Version | |
local.contributor.affiliation | Estavillo, Gonzalo, College of Medicine, Biology and Environment, ANU | |
local.contributor.affiliation | Crisp, Peter, College of Medicine, Biology and Environment, ANU | |
local.contributor.affiliation | Pornsiriwong, Wannarat, College of Medicine, Biology and Environment, ANU | |
local.contributor.affiliation | Wirtz, Markus, University of Heidelberg | |
local.contributor.affiliation | Collinge, Derek, College of Medicine, Biology and Environment, ANU | |
local.contributor.affiliation | Carrie, Chris, University of Western Australia | |
local.contributor.affiliation | Giraud, Estelle, University of Western Australia | |
local.contributor.affiliation | Whelan, James M, University of Western Australia | |
local.contributor.affiliation | David, Pascale, Aix-Marseille II | |
local.contributor.affiliation | Javot, Helene, Aix-Marseille II | |
local.contributor.affiliation | Brearley, Charles, University of East Anglia | |
local.contributor.affiliation | Hell, Ruediger, University of Heidelberg | |
local.contributor.affiliation | Marin , Elena , Aix-Marseille II | |
local.contributor.affiliation | Pogson, Barry, College of Medicine, Biology and Environment, ANU | |
local.description.embargo | 2037-12-31 | |
local.bibliographicCitation.startpage | 3992 | |
local.bibliographicCitation.lastpage | 4012 | |
local.identifier.doi | 10.1105/tpc.111.091033 | |
local.identifier.absseo | 970106 - Expanding Knowledge in the Biological Sciences | |
dc.date.updated | 2016-02-24T11:27:34Z | |
local.identifier.scopusID | 2-s2.0-84855182059 | |
local.identifier.thomsonID | 000298674200013 | |
Collections | ANU Research Publications |
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