Os03g0571900

The rice gene Os03g0571900 was reported as pez1 in 2011. PEZ1 belongs to the Multidrug and Toxic compound Extrusion (MatE) transporter family, a group of proteins with 12–14 transmembrane domains transporting small organic compounds.

Annotated Information

Function

• PEZ1 is responsible for an increase of PCA concentration in the xylem sap, and is essential for the utilization of apoplasmic precipitated iron in the stele.

Mutation

• The researchers isolated two Cd-accumulating mutants that were related to phenolic secretion, and named them phenolics efflux zero1 (pez1) -1, and -2. When grown in soil, these mutants accumulated higher Cd amounts in leaves and seeds (Fig. 1A, B) whereas no difference was observed for leaf dry weight per plant, SPAD value (Fig. 1C, D), the concentration of other metals in seed, as well as yield. When grown in hydroponic solution, pez1-1 and pez1-2 also showed higher Cd concentrations in roots and leaves compared to the WT (Fig. 1E, F).

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Evolution

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Labs working on this gene

• Department of Global Agricultural Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Yayoi 1-1-1, Bunkyo-ku, Tokyo 113-8657, Japan
• Genome Resource Center, National Institute of Agrobiological Sciences, Kannondai 2-1-2, Tsukuba, Ibaraki 305-8602, Japan
• Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Aobayama 6-6-07, Sendai 980-8579, Japan
• Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Suematsu 1-308, Nonoichi-machi, Ishikawa 921-8836, Japan