Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.
Related to oomycete: water mold, Oomycota


Any of various filamentous, often parasitic heterokonts of the division Oomycota, characterized by bearing female gametes in oogonia. Oomycetes include the downy mildews and other species that cause plant diseases such as late blight. Also called water mold.

o′o·my·ce′tous adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Botany) any organism of the phylum Oomycota (or Oomycetes), formerly classified as fungi but now usually included in the kingdom Protoctista or Protista: includes the water moulds and downy mildews
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Chemical control which include synthetic fungicides such as metalaxyl spray are among the most widely used methods, however, they are ineffective to new strains of the oomycete produced as recombinants of fertilization (Axel et al., 2012).
Furthermore, glyoxylic acid and its derivatives are widely used across the various industries for different application such as reducing agent for electroless copper plating, visual detection of biogenic amines, and derivative for oomycete fungicides.
Raizada, Bacterial Seed Endophytes of Domesticated Cucurbits Antagonize Fungal and Oomycete Pathogens Including Powdery Mildew, Front Microbiol, 9, 42 (2018).
In those cases in which the disease is severe, the oomycete may also affect the tubers causing tough and dark rot of these structures.
It is caused by a fungus-like organism (Oomycete) and spreads from plant to plant through airborne spores.
Economic losses caused by the oomycete pathogen, Phytophthora sojae, in soybean production is estimated to be $1 to 2 billion worldwide.
Phaseoli bacterium for inhibition assay Fusarium graminearum Plant pathogenic PH-1 fungus for inhibition assay Rhizoctonia solani Plant pathogenic R251 fungus for inhibition assay Pythium irregulare Plant pathogenic oomycete for inhibition assay Pythium ultimum Plant pathogenic oomycete for inhibition assay Table 2: Promotion of corn shoot and root growth by twelve Bacillus strains in three greenhouse pot experiments.
Kamoun S, Furzer O, Jones JD, Judelson HS, Ali GS, Dalio RJ, Roy SG, Schena L, Zambounis A, Panabieres F, Cahill D, Ruocco M, Figueiredo A, Chen XR, Hulvey J, Stam R, Lamour K, Gijzen M, Tyler BM, Grunwald NJ, Mukhtar MS, Tome DF, Tor M, Van Den Ackerveken G, McDowell J, Daayf F, Fry WE, LindqvistKreuze H, Meijer HJ, Petre B, Ristaino J, Yoshida K, Birch PR, Govers F (2015) The top 10 oomycete pathogens in molecular plant pathology.
Jones et al., "The Top 10 oomycete pathogens in molecular plant pathology," Molecular Plant Pathology, vol.
An ancestral oomycete locus contains late blight avirulence gene Avr3a, encoding a protein that is recognized in the host cytoplasm.