142 



ORDER I. PSEUDOMONADALES 



Aerobic. 



Source: Isolated from angular leaf spots 

 and stem lesions on arrow-wood, Viburnum 

 opulus, etc. 



Habitat: Pathogenic on Viburnum spp. 



118. Pseudomonas mori (Boyer and 

 Lambert, 1893) Stevens, 1913. {Bacterium 

 mori Boyer and Lambert, Compt. rend. 

 Acad. Sci., Paris, 117, 1893, 342; Bacterium 

 mori Boyer and Lambert emend. Erw. Smith, 

 Science, 31, 1910, 792; Stevens, The Fungi 

 which Cause Plant Diseases, 1913, 30.) 



mo'ri. Gr. morum the black mulberry; 

 M.L. fem.noun Morus the generic name of 

 mulberry; M.L. gen. noun mori of the mul- 

 berry. 



Description from Smith (op. cit., 1910, 

 792). 



Rods 0.9 to 1.3 by 1.8 to 4.5 microns. 

 Motile with a polar flagellum. Gram-nega- 

 tive. 



Green fluorescent pigment produced in 

 culture. 



Gelatin: Not liquefied. 



Agar colonies: White, slow-growing, 

 smooth, flat; edges entire, becoming undu- 

 late. 



Milk: Becomes alkaline and clears. 



Nitrites not produced from nitrates. 



Indole test negative or feebly positive. 



Hydrogen sulfide not produced (Okabe, 

 Jour. Soc. Trop. Agr., 5, 1933, 166). 



No growth in broth plus 4 per cent salt 

 (Okabe, loc. cit.). 



No gas from carbohydrates. 



Temperature range, 1° C. to 35° C. 



Source: Smith isolated the pathogen from 

 blighted shoots of mulberry from Georgia. 

 Also received cultures from Arkansas and 

 the Pacific Coast. 



Habitat: Pathogenic on mulberry, Morus. 



119. Pseudomonas stizolobii (Wolf, 1920) 

 Stapp, 1935. (Aplanobactcr stizolobii Wolf, 

 Phytopath., 10, 1920, 79; Stapp, Bot. Rev., 

 1, 1935, 405.) 



sti.zo.lo'bi.i. Gr. stizo to prick, tat- 

 too; Gr. dim. labium a small lobe; M.L. 

 neut.noun Stizolobium plant generic name; 

 M.L. gen. noun stizolobii of Stizolobium. 



Rods 0.6 to 0.7 by 1.0 to 1.6 microns. 

 Non-motile (Wolf, op. cit., 1920, 79). Motile 



with a short polar flagellum (McCulloch, 

 Phytopath., 18, 1928, 460). Encapsulated. 

 Gram-negative. 



Gelatin: No liquefaction. 



Agar colonies: Circular, smooth, white, 

 raised and opaque. Margins entire to 

 slightly undulate. 



Broth: Slightly turbid throughout. No 

 pellicle or ring. 



Milk: Alkaline. 



Nitrites not produced from nitrates. 



Indole not produced. 



No acid or gas in peptone broth plus 

 sugars. 



Starch not hydrolyzed. 



Optimum temperature between 25° and 

 28° C. 



Distinctive characters: Differs from 

 Pseudomonas sojae (Pseudomonas glycinea) 

 in the smaller size of cell, the absence of a 

 pellicle and dense clouding of broth. The 

 pathogen does not infect soybean. 



Source: Isolated from the leaf spot of 

 velvet bean. 



Habitat: Pathogenic on velvet bean, 

 Stizolobium deeringianium. 



120. Pseudomonas viciae Uyeda, 1915. 

 (Uyeda, in Takimoto, Jour. Plant Protect., 

 Japan, 2, 1915, 845.) 



vi'ci.ae. L. vicia vetch; M.L. fem.noun 

 Vicia generic name of vetch; M.L. gen.noim 

 viciae of vetch. 



Rods 0.5 to 0.8 by 1.2 to 2.0 microns. 

 Motile with 2 to 4 polar flagella. Reported 

 as Gram-positive; however, probably in 

 error. No cultures are available for a retest 

 of this character. 



Green fluorescent pigment produced in 

 culture. 



Gelatin colonies: Pale white, glistening, 

 finally turning brown. No liquefaction. 



Milk: Coagulates and clears. 



Nitrites not produced from nitrates. 



Hj'drogen sulfide not produced. 



Aerobic, facultative. 



Habitat: Pathogenic on the broad bean 

 (Vicia f aba), the turnip (Brassica rapa), the 

 carrot (Da^lcus carota) and the sweet potato 

 (Ipomoea batatas) . 



121. Pseudomonas alliieola (Burk 

 holder, 1942) Starr and Burkholder, 1942. 



