Abstract:
:Menadione sodium bisulphite (MSB) is a water-soluble derivative of vitamin K3, or menadione, and has been previously demonstrated to function as a plant defence activator against several pathogens in several plant species. However, there are no reports of the role of this vitamin in the induction of resistance in the plant model Arabidopsis thaliana. In the current study, we demonstrate that MSB induces resistance by priming in Arabidopsis against the virulent strain Pseudomonas syringae pv. tomato DC3000 (Pto) without inducing necrosis or visible damage. Changes in gene expression in response to 0.2 mm MSB were analysed in Arabidopsis at 3, 6 and 24 h post-treatment using microarray technology. In general, the treatment with MSB does not correlate with other publicly available data, thus MSB produces a unique molecular footprint. We observed 158 differentially regulated genes among all the possible trends. More up-regulated genes are included in categories such as 'response to stress' than the background, and the behaviour of these genes in different treatments confirms their role in response to biotic and abiotic stress. In addition, there is an over-representation of the G-box in their promoters. Some interesting functions are represented among the individual up-regulated genes, such as glutathione S-transferases, transcription factors (including putative regulators of the G-box) and cytochrome P450s. This work provides a wide insight into the molecular cues underlying the effect of MSB as a plant resistance inducer.
journal_name
Plant Biotechnol Jjournal_title
Plant biotechnology journalauthors
Borges AA,Dobon A,Expósito-Rodríguez M,Jiménez-Arias D,Borges-Pérez A,Casañas-Sánchez V,Pérez JA,Luis JC,Tornero Pdoi
10.1111/j.1467-7652.2009.00439.xsubject
Has Abstractpub_date
2009-10-01 00:00:00pages
744-62issue
8eissn
1467-7644issn
1467-7652pii
PBI439journal_volume
7pub_type
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