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. 2017 Mar 16;18(3):641. doi: 10.3390/ijms18030641

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© 2017 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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The porphyrin pathway in plants showing metabolites and genes analyzed in this study. Metabolites quantified in this study are highlighted. Proto IX, protoporphyrin IX; Mg-Proto IX, Mg-protoporphyrin IX; Mg-Proto IX ME, Mg-protoporphyrin IX monomethyl ester; Pchlide, protochlorophyllide. Genes and enzymes that correspond to the gene names: HEMA, glutamyl-tRNA reductase; GSA, glutamate 1-semialdehyde aminotransferase; ALAD, ALA dehydratase; PPO, protoporphyrinogen oxidase; FC2, Fe-chelatase 2; HO, heme oxygenase; CHLD, d-subunit of Mg-chelatase; CHLH, H-subunit of Mg-chelatase; CHLI, I-subunit of Mg-chelatase; PORB, protochlorophyllide oxidoreductase B. Solid and dashed arrows indicate a single step and multiple steps, respectively.