A new homothallic Phytophthora from the jarrah forest in Western Australia

Stukely, M.J.C., Webster, J.L., Ciampini, J.A., Kerp, N.L., Colquhoun, I.J., Dunstan, W.A. and Hardy, G.E.St.J. (2007) A new homothallic Phytophthora from the jarrah forest in Western Australia. Australasian Plant Disease Notes, 2 (1). pp. 49-51.

Abstract

A homothallic Phytophthora, isolated at irregular intervals since the 1980s from Western Australian jarrah (Eucalyptus marginata) forest sites, has been previously misidentified as P. citricola based on morphological characters. Based on rDNA sequencing, it has been shown to be an undescribed species that is provisionally designated ‘Phytophthora sp. WA2’ pending a full description. It has been associated with lower stem lesions and root necrosis on dying 1- to 2-year-old jarrah seedlings growing in rehabilitated open-cut bauxite mine pits.