Understanding Phytophthora and Pythium species found in streams

Looking downriver on a cloudy day, standing on a small, rocky island with the main flow to the right and a small channel on the left.

General information

Five Questions About Oomycetes Small Things Considered, the microbe blog, November 16, 2009.

Introduction to the Oomycota University of California Museum of Paleontology

Oomycetes in the news

Why Pythium-Resistant Spinach and Arugula is Such a Big Deal John Lovett, U of A System Division of Agriculture Arkansas Agricultural Experiment Station

Journal articles on Phytophthora and Pythium taxonomy

Beakes GW, Glockling SL, Sekimoto S (2011) The evolutionary phylogeny of the oomycete “fungi”. Protoplasma 249-3-19 (2012)

BRASIER,C.M., COOKE,D. E. L., DUNCAN,J. M., and HANSEN,E. M.
2003. Multiple new phenotypic taxa from trees and riparian ecosystems in Phytophthora gonapodyides – P. megasperma ITS Clade 6, which tend to be high-temperature tolerant and either inbreeding or sterile
http://dx.doi.org/10.1017/S095375620300738X

Burgess, T.I., Stukely, M.J.C., Jung, T., White, D., Hüberli, D. and Hardy, G.E.St.J. (2010) Molecular characterisation of a Phytophthora hybrid swarm in native ecosystems and waterways in Western Australia. In: 5th IUFRO Phytophthora Diseases in Forests and Natural Ecosystems, 7 – 12 March, Auckland and Rotorua, New Zealand.

Cook, K.L., Hudspeth, D.S.S., and Hudspeth, M.E.S. (2001) A cox2 phylogeny of representative marine peronosporomycetes (Oomycetes). Nova Hedwigia 122: 231-243.

Ecology of aquatic oomycetes

Kageyama. K. Assessment of river environment using Pythium species. (pdf) A presentation on a study relating Pythium spp. to land use.

Nakagiri, A. (2000) Ecology and diversity of Halophytophthora species. In: Aquatic Mycology across the Millennium (eds K.D. Hyde, W.H. Ho and S.B. Pointing). (pdf) Fungal Diversity 5: 153164.

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Last updated 9/25/2025