Page:Bergey's manual of determinative bacteriology.djvu/151

 at.ro.fa'ci.ens. L. ater black; L. facio to make; M.L. part.adj. atrofaciens blackening.

Rods 0.6 by 1.0 to 2.7 microns. Long chains formed in culture. Encapsulated. Motile with 1 to 4 polar or bipolar flagella. Gram-negative

Green fluorescent pigment produced in culture.

Gelatin: Liquefied.

Beef-peptone-agar colonies: Circular, shining, translucent, white.

Broth: Growth never heavy, slight rim, and a delicate pellicle.

Milk: Becomes alkaline and clears.

Nitrites produced from nitrates (Burkholder and Starr, Phytopath., 38, 1948, 498).

Indole: Slight production.

Hydrogen sulfide: Slight production.

Acid but no gas from glucose, galactose and sucrose.

Starch is slightly hydrolyzed.

Temperature relations: Optimum between 25° and 28° C. Minimum below 2° C. Maxi mum between 36° and 37° C.

Aerobic.

Source: Isolated from diseased wheat grains collected throughout the United States and Canada.

Habitat: Causes a basal glume-rot of wheat.

80. Pseudomonas cumini (Kovachevski, 1936) Dowson, 1943. (Phytomonas cumini Kovachevski, Bull. Soc. Bot. Bulgarie, 7, 1936, 27; Dowson, Trans. Brit. Mycol. Soc, 26, 1943, 10.)

cu'mi.ni. Gr. cuminum cumin; M.L. neut.noun Cuminum generic name of cumin; M.L. neut.gen.noun cumini of cumin.

Rods, 0.5 to 0.7 by 1.0 to 3.0 microns, occurring in chains and filaments. Motile with 1 to 3 polar flagella. Gram-negative.

Green fluorescent pigment formed in culture.

Gelatin: Rapidly liquefied.

Potato agar colonies: Grayish white, circular, glistening, smooth, butyrous.

Broth: Moderate turbidity. Pseudozoogloea.

Milk: Not coagulated. Casein peptonized.

Nitrites not produced from nitrates.

Indole not produced.

Hydrogen sulfide not produced.

Acid but no gas from glucose and sucrose. No acid from lactose or glycerol. Starch not hydrolyzed.

Temperature range, 5° to 31° C.

Aerobic.

Source: Isolated from blighted cumin (Cuminum).

Habitat: Pathogenic on cumin and dill.

81. Pseudomonas desaiana (Burkholder, 1939) Sāvulescu, 1947. (B. pyocyaneus saccharum Desai, Ind. Jour. Agr. Sci., 5, 1935, 391; Phytomonas desaiana Burkholder, in Bergey et al., Manual, 5th ed., 1939, 174; Sāvulescu, Anal. Acad. Romane, III, 22, 1947 11.)

de.sai.a'na. M.L. adj. desaianus. Named for Prof. Desai of India.

Rods 0.6 to 1.2 by 1.2 to 2.2 microns. Motile with a polar flagellum. Gram-negative.

Green fluorescent pigment produced in culture. Gelatin: Liquefied.

Agar colonies: Grayish blue. Raised.

Broth: Light clouding. Pellicle.

Milk: Peptonized without coagulation.

Nitrites not produced from nitrates.

Indole not produced.

Glucose, sucrose, lactose and glycerol fermented without gas.

Starch: Hydrolysis present.

Optimum temperature, 30° C.

Aerobic.

Source: Isolated from stinking rot of sugar cane in India and associated with a white non-pathogenic bacterium.

Habitat: Pathogenic on sugar cane, Saccharum officinarum.

82. Pseudomonas erodii Lewis, 1914. (Phytopath., 4, 1914, 231.)

e.ro'di.i. Gr. erodius the heron; M.L. neut.noun Erodium generic name of heron-bill; M.L. neut.gen.noun erodii of Erodium.

Rods 0.6 to 0.8 by 1.2 to 1.8 microns. Motile with 1 to 3 polar flagella. Gram-negative.

Green fluorescent pigment produced in culture.

Gelatin: Liquefied.

Agar streak: Heavy, smooth, cream-colored growth in 24 hours.

Broth: Dense clouding in 24 hours.