Page:Bergey's manual of determinative bacteriology.djvu/168

 adonitol in a 1 per cent Bacto-peptone broth.

Starch: Very weak diastatic action.

Temperature relations: Optimum, 35° C. Minimum, 4° C. Maximum between 37° and 38° C. Thermal death point between 52° and 53° C.

Aerobic.

Growth retarded in 2 per cent salt. Very slight growth in 3 per cent salt.

Source: From diseased broad beans at Nanking, China.

Habitat: Pathogenic on broad or Windsor bean, Vicia faba.

130. Pseudomonas astragali (Takimoto, 1930) Săvulescu, 1947. (Bacterium astragali Takimoto, Jour. Plant Protect., 17, 1930, 732; Săvulescu, Anal. Acad. Romane. III, 22, 1947, 11.)

as.tra'ga.li. Gr. astragalus a vertebra, also a leguminous plant; M.L. mas.noun Astragalus a generic name; M.L. gen.noun astragali of Astragalus. Description translated by Dr. K. Togashi.

Rods 0.7 to 0.8 by 1.2 to 2.2 microns. Motile, with 1 or 2 flagella. Gram-negative.

Gelatin: Liquefied.

Agar plates: Growth somewhat slow, colorless or grayish white, entire margins, more or less aqueous, butyrous.

Uschinsky's medium: Growth vigorous, turbid, not viscid; ring and sediment.

Milk: No coagulation of casein, slow digestion. Alkaline.

Nitrites not produced from nitrates.

Indole not produced.

Hydrogen sulfide produced in small amount.

No acid or gas from glucose, sucrose, lactose or glycerol in broth.

Starch not hydrolyzed.

Temperature relations: Minimum, below 5° C. Maximum, 33° C. Thermal death point between 50° and 51° C.

Aerobic.

Source: Species isolated from Astragalus sp. Habitat: Causes a black leaf-spot of Astragalus sp.

131. Pseudomonas colurnae (Thornberry and Anderson, 1937) Burkholder, 1948. (Phytomonas colurnae Thornberry and Anderson, Phytopath., 27, 1937, 948; Burkholder, in Manual, 6th ed., 1948, 139.)

co.lur'nae. L. fem.noun corylus the hazel or filbert; L. adj. colurnus (transposition of corulnus) pertaining to hazel.

Rods 0.8 to 1.0 by 1.0 to 1.8 microns. Single, in pairs or chains. Encapsulated. Motile with 1 to 2 polar flagella. Gram-negative.

Gelatin: Liquefied.

Glucose agar slants: Growth filiform, raised, dull, smooth, opaque and viscid. Broth: Moderate turbidity. Ring.

Milk: Peptonization complete with acid production. No reduction of litmus nor coagulation.

Nitrites not produced from nitrates.

Indole not produced.

Hydrogen sulfide not produced.

No appreciable amount of gas from xylose, glucose, sucrose or glycerol.

Starch hydrolyzed.

Temperature relations: Optimum, 21° C. Minimum, 5° C. Maximum, 35° C. Thermal death point, 50° C.

Aerobic.

Source: From leaves and young stems of the Turkish hazelnut in Illinois.

Habitat: Pathogenic on the Turkish hazelnut, Corylus colurna.

132. Pseudomonas iridicola (Takimoto, 1931) Stapp, 1935. (Bacterium iridicola Takimoto, Fungi, Nippon Fungological Soc, 1, 1931, 24; Stapp, Bot. Rev., 1, 1935, 408.)

i.ri.di'co.la. Gr. iris, iridis the rainbow, the plant iris; M.L. fem.noun Iris generic name; L. -cola dweller; M.L. fem.noun iridicola iris 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.

Temperature relations: Optimum, 38° C. Minimum, 4° C.