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345-349
- Zusammenfsg.
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Plants have defense mechanisms against high light stress, including transcriptional regulation at the nucleus. However, the molecular mechanism of the regulation is largely unknown. We have characterized transcriptional response to high light stress using a chimeric gene of the ELIP2 promoter fused with the luciferase reporter gene (ELIP2::LUC). ELIP2::LUC was induced by high light stress but not by oxidative stress. Without high light stress, ELIP2::LUC was activated by chloroplast destruction caused by norflurazon and targetitoxin feeding. According to these results, the activation of ELIP2::LUC by high light stress is proposed to be mediated by one of "plastid signaling", which is supposed to mediate the information of the plastid state to the nucleus.
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