Singlet oxygen as a signaling transducer for modulating artemisinin biosynthetic genes in Artemisia annua

• DOI: 10.1007/s10535-011-0166-8
• Publication Date: 2011-10-14T16:26:41Z
• Authors: Q. -P. Zeng; X. -M. Zeng; R. -Y. Yang; X. -Q. Yang
• Keywords: Artemisia annua; Artemisia

Although crosstalk between cytosolic and plastidic terpenoid pathways has been validated in many plant species, we report here for the first time a striking elevation of nucleus-encoded artemisinin biosynthesis relevant DBR2 mRNA following incubation plants with fosmidomycin (FM). FM decreased singlet oxygen (1O2) scavengers such as β-carotene α-tocopherol subsequently invoked 1O2 burst. The treatment fluridone (FD) neither content nor triggered emission. In conclusion, can up-regulate 1O2-sensitive nuclear genes responsible biogenesis by mitigating accumulation scavenging terpenoids, thereby eliciting generation initiating retrograde signaling.