Characterization of programmed cell death during aerenchyma formation induced by ethylene or hypoxia in roots of maize (Zea mays L.). - Gunawardena, ,A..H. L. A. N.,.; Pearce, ,D..M.,.; Jackson, ,M..B.,.; Hawes, ,C..R.,.; and Evans, ,D..E.. (Planta, 2001)