Document Detail


UV-C-irradiated Arabidopsis and tobacco emit volatiles that trigger genomic instability in neighboring plants.
MedLine Citation:
PMID:  22028460     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We have previously shown that local exposure of plants to stress results in a systemic increase in genome instability. Here, we show that UV-C-irradiated plants produce a volatile signal that triggers an increase in genome instability in neighboring nonirradiated Arabidopsis thaliana plants. This volatile signal is interspecific, as UV-C-irradiated Arabidopsis plants transmit genome destabilization to naive tobacco (Nicotiana tabacum) plants and vice versa. We report that plants exposed to the volatile hormones methyl salicylate (MeSA) or methyl jasmonate (MeJA) exhibit a similar level of genome destabilization as UV-C-irradiated plants. We also found that irradiated Arabidopsis plants produce MeSA and MeJA. The analysis of mutants impaired in the synthesis and/or response to salicylic acid (SA) and/or jasmonic acid showed that at least one other volatile compound besides MeSA and MeJA can communicate interplant genome instability. The NONEXPRESSOR OF PATHOGENESIS-RELATED GENES1 (npr1) mutant, defective in SA signaling, is impaired in both the production and the perception of the volatile signals, demonstrating a key role for NPR1 as a central regulator of genome stability. Finally, various forms of stress resulting in the formation of necrotic lesions also generate a volatile signal that leads to genomic instability.
Authors:
Youli Yao; Cristian H Danna; Franz J Zemp; Viktor Titov; Ozan Nazim Ciftci; Roman Przybylski; Frederick M Ausubel; Igor Kovalchuk
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2011-10-25
Journal Detail:
Title:  The Plant cell     Volume:  23     ISSN:  1532-298X     ISO Abbreviation:  Plant Cell     Publication Date:  2011 Oct 
Date Detail:
Created Date:  2011-12-05     Completed Date:  2012-07-12     Revised Date:  2013-06-27    
Medline Journal Info:
Nlm Unique ID:  9208688     Medline TA:  Plant Cell     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3842-52     Citation Subset:  IM    
Affiliation:
Department of Biological Sciences, University of Lethbridge, Lethbridge, Alberta T1K 3M4, Canada.
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MeSH Terms
Descriptor/Qualifier:
Acetates / metabolism*
Arabidopsis / genetics*,  physiology,  radiation effects
Arabidopsis Proteins / genetics,  metabolism*
Bacterial Proteins
Cyclopentanes / metabolism*,  pharmacology
Gene Expression Regulation, Plant / physiology
Genome, Plant / genetics*
Genomic Instability / genetics
Homologous Recombination / genetics
Membrane Proteins
Mutation
Oxylipins / metabolism*,  pharmacology
Plants, Genetically Modified
Salicylates / metabolism*,  pharmacology
Salicylic Acid / pharmacology
Signal Transduction / physiology
Stress, Physiological
Tobacco / genetics*,  physiology,  radiation effects,  virology
Tobacco Mosaic Virus / physiology
Ultraviolet Rays
Grant Support
ID/Acronym/Agency:
R37 GM048707/GM/NIGMS NIH HHS; R37 GM048707-20/GM/NIGMS NIH HHS; R37 GM48707/GM/NIGMS NIH HHS
Chemical
Reg. No./Substance:
0/Acetates; 0/Arabidopsis Proteins; 0/Bacterial Proteins; 0/Cyclopentanes; 0/Membrane Proteins; 0/NPR1 protein, Arabidopsis; 0/Oxylipins; 0/Salicylates; 0/rec-2 protein, Haemophilus influenzae; 119-36-8/methyl salicylate; 1211-29-6/methyl jasmonate; 69-72-7/Salicylic Acid; 6RI5N05OWW/jasmonic acid
Comments/Corrections

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