140 



MANUAL OF DETERMINATIVE BACTERIOLOGY 



133. Pseudomonas maublancii (Foex 

 and Lansade) comb. nov. (Bacterium 

 maublancii Foex and Lansade, Comp. 

 rend. Acad. Sci. Paris, 202, 1936, 2174; 

 Phytomonas maublancii Burkholder, in 

 Manual, 5th ed., 1939, 198.) Named for 

 M. Maublanc, French colonial plant 

 pathologist. 



Rods : 0.4 by 1.3 microns. Motile with 

 1 to 3 polar flagella. Gram-negative. 



Gelatin: Liquefied. 



Gelatin colonies: Round, translucent, 

 margins entire. 



Broth: Thin pellicle. 



Milk: Not coagulated; clears. 



Nitrites not produced from nitrates. 



Indole not formed. 



No HoS formed. 



Carbohydrates not fermented. 



Ammonia produced. 



Growth in Fermi's solution, not in Us- 

 chinsky's solution. 



Source : Isolated from rotting vascular 

 and parenchymatic tissue of banana 

 stalks. 



Habitat: Causes a disease of the 

 banana plant. 



134. Pseudomonas polygon! (Thorn- 

 berry and Anderson) coynb. nov. (Phyto- 

 monas polygoni Thornberry and Ander- 

 son, Phytopath., 27, 1937, 947.) From 

 Gr. polygonum, knot-weed; M. L. Poly- 

 gonum, a generic name. 



Rods: 0.5 to 1.5 by 1.5 to 2.5 microns. 

 Motile with 2 to 8 bi -polar flagella. Cap- 

 sules. Gram-positive (?). Other spe- 

 cies reported by these investigators as 

 Gram-positive have proved to be Gram- 

 negative on a retest (Burkholder). 



Gelatin: Liquified. Brown. 



Glucose agar slant: Abundant, fili- 

 form, flat, dull, smooth, pale olive-gray, 

 butyrous. Medium turns brown. 



Broth: Turbid. Pellicle. 



Milk: Alkaline and clears. Litmus 

 not reduced. 



Nitrites not produced from nitrates. 



Indole not formed. 



Hydrogen sulfide not produced. 



No appreciable amount of gas from car- 

 bohydrates. 



Starch : No hydrolysis. 



Optimum temperatures 18°C. Mini- 

 mum 7°C. Maximum 35°C. 



Aerobic. 



Source : From diseased leaves of Poly- 

 gonum convolvulus in Illinois. 



Habitat : Pathogenic on black bind- 

 weed, Polygonum convolvulus. 



135. Pseudomonas iridicola (Taki- 

 moto) Stapp. (Bacterium iridicola Taki- 

 moto. Fungi, Nippon Fungological Soc, 

 1, 1931, 24; Stapp, Bot. Rev., 1, 1935, 408; 

 Phytomonas iridicola Burkholder, in 

 Manual, 5th ed., 1939, 198.) From Gr. 

 iris (iridis) , iris, a rainbow; -cola, 

 dweller. 



Rods: 0.7 to 0.8 by 1.2 to 2 microns. 

 Motile with 1 to 3 polar flagella. Gram- 

 negative. 



Gelatin: Liquefied. 



Beef agar colonies: White, circular, 

 raised or convex. 



Milk: Clears without coagulation. 



No acid or gas from carbohydrates. 



Starch digested. 



Optimum temperature 38°C. Mini- 

 mum 4°C. 



Source : Isolated from a brown leaf 

 spot of iris. 



Habitat : Pathogenic on Iris tectorum 

 and Iris japonica. 



136. Pseudomonas levistici Oster- 

 walder. (Ostcrwalder, Cent. f. Bakt., 

 II Abt., 25, 1909, 260; Bacterium levistici 

 Stevenson, Foreign Plant Dis., U. S. 

 Dept. Agr., Oflfice of Sec'y-, 1926, 101; 

 Phytomonas levistici Magrou, in Hau- 

 duroy et al.. Diet. d. Bact. Path., Paris, 

 1937, 373.) From M. L. Levisticum, a 

 generic name. 



Rods: 0.5 to 0.7 by 1.1 to 1.5 microns. 

 Motile with a polar flagellum. Gram- 

 negative. 



Gelatin: Colonies greenish-white. 

 Liquefaction. 



Nutrient agar: Good growth at room 

 temperature. Yellowish-white. 



