Prof Nakazono is taking measurements of radial oxygen loss from maize in a growth cabinet using a root-sleeving electrode.

Professor Mikio Nakazono is a renowned expert in root trait that are relevant to soil waterlogging. He has worked extensively with constitutive and inducible aerenchyma formation in a range of crop species as well as the barrier to radial oxygen loss using model species such as rice, maize and teosinte.

During our visits to Nagoya University, we have recently worked with ROL barrier formation in the lateral roots of teosinte (Zea nicaraguensis), a wild relative to maize, and an exciting maize introgression line with a QTL from teosinte that is coding for ROL barrier formation.

Our collaboration is ongoing although the Corona pandemic made it impossible to conduct the planned research visit in 2020.

Examples of output from our collaboration.

  1. Pedersen O, Nakayama Y, Yasue H, Kurokawa Y, Takahashi H, Floytrup AH, Omori F, Mano Y, Colmer TD, Nakazono M (2021) Lateral roots, in addition to the main axis of adventitious roots, form a barrier to radial oxygen loss in Zea nicaraguensis and a chromosome segment introgression line in maize. New Phytologist 229: 94-105 doi:  10.1111/nph.16452
  2. Pedersen O, Sauter M, Colmer TD, Nakazono M (2021) Regulation of root adaptive anatomical and morphological traits during low soil oxygen. New Phytologist 229: 42-49 doi:  10.1111/nph.16375
  3. Yamauchi T, Pedersen O, Nakazono M, Tsutsumi N (2021) Key root traits of Poaceae for adaptation to soil water gradients. New Phytologist 229: 3133-3140 doi:  10.1111/nph.17093

The group working on teosinte and maize. From left to right: Prof Tim Colmer, Dr Imran Malik, Prof Mikio Nakazono, myself and my wife, Anja Fløytrup