Group of Plant Stress Physiology„ Okayama University

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In our lab, we are also working on transporters of other metal elements such as Cu and Zn. Recently, we have identified a transporter (OsHMA5) involved in xylem loading of Cu in rice. We also have identified a transporter (OsYSL16) responsible for mobility of Cu from old leaves to young leaves and panicles. Furthermore, we found that OsHMA2 is required for preferential distribution of Zn to young leaves and panicles.
@Node is an important organ for mineral element distribution in gramineous plants. There are many unidentified transporters localized at the node. We are working on these transporters as well as their regulation mechanisms.


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Key publications

  1. Zheng, L. Q., Yamaji, N., Yokosho, K. and Ma, J. F. 2012. YSL16 is a phloem-localized transporter of the copper-nicotianamine complex that is responsible for copper distribution in rice. Plant Cell 24: 3767–3782.
  2. Deng, F., Yamaji, N., Xia, J. and, Ma J. F. (2013) A member of heavy metal P-type ATPase OsHMA5 is involved in xylem loading of copper in rice. Plant Physiol. 163: 1353-1362
  3. Yamaji, N., Xia, J. X., Mitani-Ueno, N., Yokosho, K. and Ma, J. F. 2013. Preferential delivery of Zn to developing tissues in rice is mediated by a P-type ATPases, OsHMA2.  Plant Physiol. 162: 927–939.
  4. Yamaji, N. and Ma, J. F. 2014.  The node, a hub for nutrient distribution in gramineous plants.  Trends in Plant Sci. 10.1016/j.tplants.2014.05.007