FAMILY PSEUDOMONADACEAE 



131 



Mycol. Soc, 26, 1943, 10.) From Gr. 

 panax (panicis), a plant heal-all; M. L. 

 Panax, a generic name. 



Description from Elliott, Bact. Plant 

 Pathogens, 1930, 173. 



Rods : 0.5 by 1.3 to 1.5 microns. Chains. 

 Motile with 4 to 6 polar flagella. Gram- 

 negative. 



Green fluorescent pigment produced 

 in culture. 



Gelatin: Slight liquefaction. 



Agar colonies : White. 



Milk: Coagulated. 



No gas from sugars. 



Habitat : Causes a root rot of ginseng, 

 Panax quinquefolium. 



111. Pseudomonas aleuritidis (McCul- 

 loch and Demaree) Stapp. {Bacterium 

 aleuritidis McCulloch and Demaree, 

 Jour. Agr. Res., 45, 1932, 339; Stapp, Bot. 

 Rev., 1, 1935, 408; Phytomonas aleuriti- 

 dis Magrou, in Hauduroy et al.. Diet. d. 

 Bact. Path., Paris, 1937, 328.) From 

 Gr. aleurites, of wheaten flour; M. L. 

 Aleurites, generic name. 



Rods: 0.6 to 0.7 by 1.1 to 3 microns. 

 Motile with 1 to 5 polar, rarely bipolar, 

 flagella. Capsules present. Gram-nega- 

 tive. 



Green fluorescent pigment produced 

 in certain media. 



Gelatin: Not liquefied. 



Beef agar slants: Growth is thin, white 

 and viscid. 



Broth: A heavy white surface growth 

 in 24 hours. Sediment. 



Milk: Becomes alkaline, but no sep- 

 aration. 



Nitrites are produced from nitrates. 



Indole test feebly positive. 



Hydrogen sulfide test feebly positive. 



Acid but no gas from glucose, galac- 

 tose and glycerol. Slow acid production 

 from sucrose, maltose and lactose. 



Starch hydrolysis feeble. 



Optimum temperature 27" to 28°C. 

 Maximum temperature 37°C. 



Optimum pH 6.2 to 6.8. pH range 5.4 

 to 8.9. 



Source : Isolations from naturally in- 

 fected tung oil trees in Georgia. 



Habitat: Pathogenic on the tung oil 

 tree (Aleurites fordi), on the bean 

 (Phaseolus vulgaris) and the castor bean 

 (Ricinus communis). 



112. Pseudomonas giycinea Coerper. 

 (Bacterium glycineum Coerper, Jour. 

 Agric. Research, 18, 1919, 188; Coer- 

 per, loc. cit., 188; Phytomonas giycinea 

 Burkholder, Phytopath., 16, 1926, 922.) 

 From glycys, sweet; ine, like; M.L. 

 Glycine, generic name. 



Synonj-m : Bacterium sojae Wolf, Phy- 

 topath., 10, 1920, 132 (Phytomonas sojae 

 Burkholder, Phytopath., 16, 1926, 922; 

 Pseudomonas sojae Stapp, in Sorauer, 

 Handb. d. Pflanzenkrankheiten, 2, 5 

 Aufl., 1928, 174). See Elliott, Bact. 

 Plant Pathogens, 1930, 134; and Shunk 

 and Wolf, Phytopath., 11, 1921, 18. 



Rods: 1.2 to 1.5 by 2.3 to 3 microns. 

 Motile with polar flagella. Gram-nega- 

 tive. 



Green fluorescent pigment produced in 

 culture. 



Gelatin: Not liquefied. 



Beef-peptone agar colonies : Appear 

 in 24 hours. Circular, creamy white, 

 smooth, shining and convex. Margins 

 entire. Butyrous in consistency. 



Milk: Litmus turns blue and later a 

 separation of the milk occurs. Casein not 

 digested. 



Nitrites not produced from nitrates. 



Indole test feebly positive. 



Not lipolytic (Starr and Burkholder, 

 Phytopath., S2, 1942, 601). 



Starch not hydrolyzed. 



Acid from glucose and sucrose. 



Optimum temperature 24° to 26°C. 

 Maximum 35°C. Minimum 2°C. 



Facultative anaerobe. 



Source : A number of cultures isolated 

 from soy beans in Wisconsin. 



Habitat: Pathogenic on soybean. Gly- 

 cine max (Soja max) . 



112a. Pseudomonas giycinea var. 

 japonica (Takimoto) comb. nov. (Bac- 



