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Figure 1 | BMC Plant Biology

Figure 1

From: The upregulation of thiamine (vitamin B1) biosynthesis in Arabidopsis thaliana seedlings under salt and osmotic stress conditions is mediated by abscisic acid at the early stages of this stress response

Figure 1

Schematic representation of thiamine biosynthesis in plants (A) and subcellular localization of the major thiamine diphosphate-incorporating enzymes (B). The Arabidopsis genes encoding the enzymes which catalyze the biosynthetic reactions shown are specified. AIR, 5-aminoimidazole ribonucleotide; HET-P, 4-methyl-5-(2-hydroxyethyl)thiazole phosphate; HMP-P/HMP-PP, 4-amino-2-methyl-5-hydroxymethylpyrimidine monophosphate/diphosphate; TA, thiamine; TMP, thiamine monophosphate; TDP, thiamine diphosphate; PDC, pyruvate decarboxylase; PDH, pyruvate dehydrogenase; KGDH, α-ketoglutarate dehydrogenase; BKDH, branched-chain α-ketoacid dehydrogenase; TK, transketolase; DXPS, 1-deoxy-D-xylulose-5-phosphate synthase.

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