Genes Involved in the Plant Vitalization by Atmospheric Nitrogen Oxides on Arabidopsis thaliana

Abstract

We reported previously that plants grown in the air containing nitrogen dioxides (NOx) at background levels were almost two times greater in the growth rate and biomass yield than those grown in the air without NOx¹⁾. We designated this plant vitalization by NOx. In this study, we investigated genes involved in the regulation of this effect on Arabidopsis thaliana. The DNA microarray analysis showed that more than 130 genes increased their expression by more than two times in response to fumigation with atmospheric NOx. T-DNA insertion mutants were then analyzed for the vitalization by NOx. It was found that lines in which these genes were tagged by T-DNA insertion lost this effect, showing that genes collected by the microarray analysis are involved in the regulation of the vitalization by NOx.
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