Ozone and nitric oxide induce cGMP-dependent and independent transcription of defence genes in tobacco
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Date
2009
Journal Title
Journal ISSN
Volume Title
Publisher
Wiley
Abstract
Here, we analyse the temporal signatures of ozone (O3)-induced hydrogen peroxide
(H2O2) and nitric oxide (NO) and the role of the second messenger guanosine
3′,5′-cyclic monophosphate (cGMP) in transcriptional changes of genes diagnostic
for biotic and abiotic stress responses. Within 90 min O3 induced H2O2 and NO peaks and we demonstrate that NO
donors cause rapid H2O2 accumulation in tobacco (Nicotiana tabacum) leaf. Ozone
also causes highly significant, late (> 2 h) and sustained cGMP increases, suggesting
that the second messenger may not be required in all early (< 2 h) responses to O3,
but is essential and sufficient for the induction of some O3-dependent pathways.
Description
Keywords
Biotechnology, Plant proteins, Tobacco, Nitric oxide, Phytologist
Citation
Pasqualini, S. et al. (2009). Ozone and nitric oxide induce cGMP-dependent and independent transcription of defence genes in tobacco. New Phytologist, 181 (4), 860-870. 10.1111/j.1469-8137.2008.02711.x