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Literature summary for 2.5.1.115 extracted from

  • Collakova, E.; DellaPenna, D.
    The role of homogentisate phytyltransferase and other tocopherol pathway enzymes in the regulation of tocopherol synthesis during abiotic stress (2003), Plant Physiol., 133, 930-940.
    View publication on PubMedView publication on EuropePMC

Organism

Organism UniProt Comment Textmining
Arabidopsis thaliana Q8VWJ1
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Source Tissue

Source Tissue Comment Organism Textmining
leaf
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Arabidopsis thaliana
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Expression

Organism Comment Expression
Arabidopsis thaliana abiotic stress results in an 18 and 8fold increase in total tocopherol content in wild-type and isoform HPT1 overexpressing leaves, respectively, with tocopherol levels in the ovrexpressing strain being 2- to 4fold higher than wild type at all experimental time points. Increased total tocopherol levels correlate with elevated HPT mRNA levels and HPT specific activity up

General Information

General Information Comment Organism
physiological function abiotic stress results in an 18 and 8fold increase in total tocopherol content in wild-type and isoform HPT1 overexpressing leaves, respectively, with tocopherol levels in the ovrexpressing strain being 2- to 4fold higher than wild type at all experimental time points. Increased total tocopherol levels correlate with elevated HPT mRNA levels and HPT specific activity, suggesting that HPT activity limits total tocopherol synthesis during abiotic stress. Overexpression of gamma-tocopherol methyltransferase in the HPT1 overexpression strain results in nearly complete conversion of gamma- and delta-tocopherols to alpha- and beta-tocopherols Arabidopsis thaliana