These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: The biosynthesis of isoprenoids and the mechanisms regulating it in plants.
    Author: Okada K.
    Journal: Biosci Biotechnol Biochem; 2011; 75(7):1219-25. PubMed ID: 21737944.
    Abstract:
    Plants synthesize isopentenyl diphosphate (IPP) via the mevalonate pathway and the methylerythritol phosphate (MEP) pathway. IPP is condensed to its allylic isomer, dimethylallyl diphosphate, to yield geranylgeranyl diphosphate, a common precursor for the production of cyclic diterpenoids. Studies of subcellular localization and of transgenic plants defective in the enzymes involved in the pathway have revealed that the synthesis processes of plastidic diterpenoids are metabolically separated in the plastids. Ditepenoid phytoalexins are synthesized through the plastidic MEP pathway in rice. The biosynthetic genes responsible for diterpenoid phytoalexins are clustered on the rice chromosomes, and the expression of them was coordinately regulated under stress conditions. Furthermore, a basic leucine zipper transcription factor, OsTGAP1, which is induced by the fungal chitin oligosaccharide elicitor, was identified as a key regulator of coordinated expression of the clustered biosynthetic genes for phytoalexin production in rice.
    [Abstract] [Full Text] [Related] [New Search]