Phylum:Oomycota >> Class: Oomycetes >>  Order: Saprolegniales 
   
 
 BCRC Number NO BCRC Number!  
   
 Scientific Name: Achlya dubia
 
   
   
 Author:

Achlya dubia Coker. Saprolegniaceae, 135. 1923.

   
 
 
 
 
 Description: Zoosporangia discharge thraustothecoid from primary and secondary zoosporangia. Oogonia abundant; lateral; spherical or pyriform; 30-80 μ in diameter, predominantly 40-50 μ. Oogonial wall smooth rarely papillate: pitted only under point of attachment of antheridial cells. Antheridial branches diclinous. Oospheres maturing. Oospores eccentric, spherical, usually filling the oogonium; 1-15 in number predominantly 2-5; 20-32.5 μ in diameter, predominantly 22-27 μ.
 
 
 
 
 
 Specimens:

Collected five from soil samples (Sept. 2, 1974. Shih-lin, Taipei; garden soil).

 
 
 
 Habitat: Soil and water
 
 
 
 Distribution:

Taiwan

 
 
 
 References:

Coker WC. 1923; Couch JN. 1931.

   
   
   
 Provided:

T. S. Chiou and H. S. Chang

 
 
 Note: A. dubia has been isolated from the garden and paddy rice soils. Our isolates are characteristic by simultaneously producing achlyoid and thraustothecoid zoosporangia in cultures. In addition, the oogonia are plerotic.