Flagellar Characteristics 



The ordinary pseudomonads show two types of flagellation, 

 polar monotrichous and polar multitrichous (Fig. 8). Both of 

 these types are quite ubiquitous and often isolated from the hu- 

 man skin, throat, intestines, etc. Both types may produce a greenish 

 pigment but as a rule the monotrichous types produce the most 

 pigment. Pigment production appears to be limited to the carbo- 

 hydrate oxidizers. The nonoxidizers such as Fseudomonas dimi- 

 nuta, Fseudomonas stutzeri, etc. are nonpigmented. The most 



Fig. 8. The ordinary pseudomonads. 

 a, b, c. Fseudomonas aeruginosa, a. The typical flagellation of a young 

 culture, b. Direct stain of the peritoneal fluid of an infected guinea pig. c. A 

 dividing organism. 



d. P. fuorescens. Normal polar monotrichous flagellation. 



e. P. diminuta. Note the extremely short wavelength. 



f. P. nigrifaciens. This organism is larger than most pseudomonads and 

 the flagellum has an extraordinary long wavelength. 



g. h. Pseudomonas sp. g. Either a polar monotrichous or a polar multi- 

 trichous organism, h. A typical polar multitrichous type. 



i. P. sijnxantha, NCIB 8178. Polar multitrichous or lophotrichous flagella- 

 tion. 



j. P. arsenooxijdans, NCIB 8685. Polar multitrichous flagella with coiling 

 tendency. 



k. Pseudomonas sp. Polar multitrichous flagella of long wavelength. This 

 culture was received from Dr. S. F. Snieszko as Aeromonas, U-21. Its history 

 shows it originally came from R. R. Rucker of the Western Disease Laboratory, 

 Seattle, as No. 28. 



1. P. cuneatus, comb, nov., ATCC 6972. Typical polar lophotrichous flagel- 

 lation. This culture is labeled Vibrio cuneatus in culture collections. Physio- 

 logically and morphologically it is very much like the phytopathogenic pseudo- 

 monads. 



m. P.pseudomallei (Malleomijces pseudomallei) . Polar multritrichous 

 flagellation. Organism received from Dr. S. Gowan, British Type Culture Col- 

 lection. 



n. P. chlororaphis, NCIB 8672. Typical polar monotrichous flagellation. 



o. Pseudomonas sp., H-163. Short polar monotrichous flagellum. Culture 

 isolated from sputum lay Dr. Rudolph Hugh. 



p. P.saccharophila, ATCC 9114. Typical polar monotrichous flagellation. 



q. P. hookeri, comb, nov., ATCC 9128. This organism in culture collections 

 is labeled Alcaligenes hookeri. It does not attack carbohydrates but the 

 morphology places it in the Pseudomonas genus. 



r. P.jaecalis var. radicans, comb, nov., ATCC 4741. This organism is 

 labeled Alcaligenes faecalis var. radicans in culture collections. It does not 

 -attack carbohydrates but has the typical flagellation of Pseudomonas. 



a,c,h. From E. Leifson, /. Bactcriol. 62, 377-389 (1951). 



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