FAMILY IV. PSEUDOMONADACEAE 



203 



No growth in 6 per cent sodium chloride 

 broth. 



Source: Five strains were isolated from 

 soil. 



Habitat: Presumably soil. 



2. Alginomonas terrestralginica 



(Waksman et al., 1934) K^ss et al., 1945. 

 {Bacterium terrestralginicum Waksman, 

 Carey and Allen, Jour. Bact., 28, 1934, 217; 

 Kiss, Lid and MoUand, Norske Viden- 

 skaps-Akad., Oslo, 1 Mat.-Naturv. Klasse, 

 No. 11, 1945, 9.) 



ter.res.tral.gi'ni.ca. L. noun terrestris 

 land, earth; M.L. adj. alginicus pertaining 

 to alginic acid from seaweed; M.L. adj. 

 terrestralginicus land-alginic; presumably 

 intended to mean an alginic bacterium from 

 the soil. 



Long rods, 1.0 to 1.5 by 1.5 to 2.5 microns, 

 with somewhat rounded ends, usually oc- 

 curring singly but also in pairs, occasionally 

 in chains of shorter rods. Motile. Granular. 

 Gram-negative. 



Alginic acid plate: Colonies small, whitish 

 in appearance with a slight metallic sheen. 



Alginic acid liquid medium: Medium at 

 first clouded. Later a pellicle is formed on 

 the surface of the medium; it is soon broken 

 up due to active gas formation. Reaction of 

 medium becomes slightly alkaline. 



Gelatin medium: Slow growth throughout 

 stab, slow liquefaction at surface of medium 

 at 18° C. 



Agar liquefaction: None. 



Glucose broth: Abundant turbidity; some 

 sediment; no pellicle; slightly fluorescent. 



Litmus milk: Acid; milk coagulated; 

 only limited digestion of coagulum. 



Potato: Abundant, pinkish, compact, 

 dry growth on surface of plug, the rest of 

 the plug becoming gray with a tendency to 

 darkening. 



Starch plate: Limited growth along 

 streak; no diastase. 



Aerobic to facultatively anaerobic. 



Optimum temperature, 30° C. 



Source: Isolated from New Jersey soil. 



Habitat: Soil. 



3. Alginomonas alginovora (Waks- 

 man et al., 1934) Kiss et al., 1945. {Bac- 

 terium alginovorum Waksman, Carey and 



Allen, Jour. Bact., 28, 1934, 215; K&ss, Lid 

 and Molland, Norske Videnskaps-Akad., 

 Oslo, I Mat.-Naturv. Klasse, No. 11, 1945, 

 9.) 



al.gi.no'vo.ra. L. fem.n. alga seaweed; 

 M.L. noun acidum alginicum alginic acid 

 (derived from seaweed); L. v. voro to de- 

 vour; M.L. adj. alginovorus alginic acid- 

 destroying. 



Rods, 0.75 to 1.2 by 1.5 to 2.0 microns, 

 with rounded to almost elliptical ends, 

 especially when single, occurring frequently 

 in pairs and even in chains. Encapsulated. 

 Actively motile. Gram-negative. 



Alginic acid plate: Colony large, white 

 in appearance, with coarse, granular center, 

 entire margin. Clears up turbidity caused 

 by alginic acid on the plate. No odor. 



Alginic acid liquid medium: Heavy pel- 

 licle formation. Active production of an 

 enzyme, alginase, which brings about the 

 disappearance of alginic precipitate in sea- 

 water medium. 



Salt-water medium: A slimy pellicle of a 

 highly tenacious nature is produced, the 

 whole medium later turning to a soft jelly. 



Sea-water gelatin : Active and rapid lique- 

 faction in two to six days at 18° C; highly 

 turbid throughout the liquefied zone. 



Agar liquefaction: Extensive softening of 

 agar, no free liquid. 



Sea-water glucose broth: Abundant, 

 uniform turbidity with surface pellicle; 

 some strains give heavier turbidity, and 

 others heavier pellicle. 



Litmus milk containing 3.5 per cent 

 salt: No apparent growth. 



Potato moistened with sea water: Moist, 

 spreading, ivory-colored growth; heavy 

 sediment in free liquid at the bottom. 



Starch plate: Abundant, cream-colored, 

 slimy growth; extensive diastase produc- 

 tion. 



Aerobic to microaerophilic. 



Optimum temperature, 20° C. 



Source: Isolated from sea water, sea- 

 bottom sediments and from the surface of 

 algal growth in the sea. 



Habitat: Very common in the sea. 



4. Alginomonas fucicola (Waksman et 

 al., 1934) Kiss et al., 1945. {Bacterium fuci- 

 cola Waksman, Carey and Allen, Jour. Bact., 



