Salicylic acid and methyl jasmonate but not Rose Bengal enhance artemisinin production through invoking burst of endogenous singlet oxygen
Plant Science, ISSN: 0168-9452, Vol: 178, Issue: 4, Page: 390-397
2010
- 56Citations
- 40Captures
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Article Description
As a cis element responsive to oxidative stresses, the promoter of amorphadiene synthase gene ( pADS ) from Artemisia annua was also found to be inducible by salicylic acid (SA) and methyl jasmonate (MJ), which had been evident by phenotyping pADS -driven β-glucuronidase reporter gene ( GUS ) in transgenic Nicotiana tabacum incubated with SA/MJ. Furthermore, SA/MJ-treated A. annua exhibited a correlation of the up-regulation of ADS gene with the emission of singlet oxygen ( 1 O 2 ), suggesting that SA/MJ induced artemisinin overproduction through invoking 1 O 2 burst. Supplement with Rose Bengal (RB), a photosensitizing 1 O 2 generator, or direct exposure to a 1 O 2 -generating pool, however, failed to facilitate artemisinin accumulation in subjected A. annua. Alteration of metabolite profiles and fluctuation of H 2 O 2 level suggested that RB treatment might have led to a diminished endogenous 1 O 2 release from A. annua, thereby reiterating an important role of the endogenous 1 O 2 rather than the exogenous 1 O 2 in enhanced artemisinin production.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0168945210000300; http://dx.doi.org/10.1016/j.plantsci.2010.01.014; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=77649337416&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0168945210000300; https://dx.doi.org/10.1016/j.plantsci.2010.01.014
Elsevier BV
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