FAMILY PSEUDOMONADACEAE 



141 



Broth: Pellicle. 



Indole formed. 



No H-iS produced. 



Source: Isolated from spots on the 

 leaves of lovage. 



Habitat: Pathogenic on lovage, Levis- 

 ticum officinale. 



137. Pseudomonas radiciperda (Jav- 

 oronkova) Stapp. {Bacterium radici- 

 perda Javoronkova, Bull. Plant Protect., 

 Leningrad, Ser. II, .5, no. 1, 1932, 161; 

 Stapp, Bot. Rev., 1, 1935, 408; Phyto- 

 monas radiciperda Magrou, in Hauduroy 

 et al., Diet. d. Bact. Path., 1937, 401.) 

 From L. radix (radicis), root; pcrdo, to 

 destroy. 



Description from Javoi'onkova, Rev. 

 App. Myc, 11, 1932, 652. 



Rods : O.S by 1 to 2 microns. Capsules. 

 Motile with 1 or 2 polar flagella. Gram- 

 negative. 



Gelatin: Liquefaction. 



Beef-peptone agar colonies: Round, 

 smooth, shining, white to pale yellow. 



Milk: Peptonized. 



Indole not formed. 



No H-jS formed. 



Acid but not gas from carbohydrates. 



Optimum temperature 23° to 25°C. 



Aerobic. 



Habitat : Causes a root rot of red clover 

 (Trifolium pratense), lentils (Lens escu- 

 lenta) and lucerne. 



138. Pseudomonas melophthora Allen 

 and Riker. (Allen and Riker, Phyto- 

 path., 22, 1932, 557; Bacterium meloph- 

 thorum Allen and Riker, ibid.; Phyfo- 

 monas melophthora Allen and Riker, 

 ibid.) From Gr. melum, apple; phthora, 

 destroyer. 



Rods: 0.68 by 1.32 microns. Motile 

 with 2 polar flagella. Gram-negative; 

 Gram-positive cells appear in old cultures. 



Gelatin : No liquefaction. 



Nutrient agar plus 2 per cent glucose: 

 Colonies appear in 36 hours. After 3 

 days colonies circular, smooth, glistening, 

 convex; edges entire; light pink, but not 

 constant. 



Broth : Good growth. Pellicle and 

 sediment. 



Milk : Little change, if an.y. 



Nitrites not produced from nitrates. 



Indole not formed. 



No HoS produced. 



Acid from arabinose, glucose, galac- 

 tose, fructose, sucrose and glycerol. No 

 acid from lactose, maltose, dextrin and 

 inulin. 



Starch not hydrolyzed. 



Optimum temperature 21° to 25°C. 



Source : Description based on 7 cul- 

 tures isolated from rotting apples and 

 from apple maggots. 



Habitat : Pathogenic on apples, and 

 found with the apple maggot, Rhagoletis 

 pomonella. 



139. Pseudomonas helianthi (Kawa- 

 mura) comb. nov. (Bacterium helianthi 

 Kawamura, Ann. Phyt. Soc. Japan, 4, 

 1934, 27; Phytomonas helianthi Magrou, 

 in Hauduroy et al., Diet. d. Bact. Path., 

 Paris, 1937, 362.) From M. L. Helian- 

 thus, a generic name. 



Probable synonym : Phytomonas helian- 

 thi var. tubero.si Thornberry and Ander- 

 son, Phytopath., 27, 1937, 948. 



Rods: 1 to 1.4 by 1.6 to 2.4 microns. 

 Motile with a single polar flagellum. 

 Gram-negative. 



Gelatin: No liquefaction. 



Beef agar colonies: White, circular, 

 edges entire. 



Broth: Turbid. Pellicle. 



Milk: Peptonized. Litmus reduced. 



Nitrates: Gas production. 



Indole not produced. 



No HoS produced. 



Acid but not gas from sucrose and glyc- 

 erol. No acid from lactose and maltose. 



Starch hydrolyzed. 



Optimum temperature 27° to 28°C. 

 Maximum 35.5°C. Minimum 12°C. 



Good growth at pH 6.4. No growth 

 pH 5.4 and pH 8.8. 



Habitat : Pathogenic on sunflower, 

 Helianthus debilis. 



140. Pseudomonas alboprecipitans 

 Rosen. (Rosen, Ann. Missouri Bot. 



