Page:Bergey's manual of determinative bacteriology.djvu/182

 ca'ja.ni. M.L. mas.n. Cajanus generic name of host; M.L. gen.noun cajani of Cajanus.

Rods 0.9 to 1.4 by 1.3 to 2.2 microns. Encapsulated. Motile with a single polar flagellum. Gram-negative.

Gelatin: Liquefied.

Potato-glucose agar colonies: 1.5 cm in diameter after 7 days, smooth, glistening, entire, pulvinate, naphthalene-yellow.

Milk: Litmus reduced. Casein digested.

Loeffler's blood serum: Liquefied in 10 days.

Hydrogen sulfide produced.

Nitrites not produced from nitrates.

Acid but no gas from glucose, lactose and sucrose. Salicin not attacked. Citrates utilized.

Starch hydrolyzed.

Methyl red negative; acetylmethylcarbinol not produced.

Synthetic asparagine medium: No growth.

Salt tolerance: Up to 3 per cent.

Optimum temperature, 30° C.

Aerobic.

Relationship to other species: Similar to Xanthomonas phaseoli, which also infects various legumes.

Source: Isolated from the pigeon pea, Cajanus cajan, in India.

Habitat: Pathogenic on Cajanus cajan.

12. Xanthomonas citri (Hasse, 1915) Dowson, 1939. (Pseudomonas citri Hasse, Jour. Agr. Res., 4, 1915, 97; Dowson, Zent. f. Bakt., II Abt., 100, 1939, 190.)

cit'ri. L. citrus the citrus; M.L. fem.n. Citrus generic name; M.L. gen.noun citri of Citrus.

Rods, 0.5 to 0.75 by 1.5 to 2.0 microns, occurring in chains. Motile with a single polar flagellum. Gram-negative.

Gelatin: Liquefied.

Beef agar colonies: Appear in 36 to 48 hours; circular, smooth, raised, dull yellow.

Broth: Turbid in 24 hours. A yellow ring forms.

Milk: Casein is precipitated.

Nitrites not produced from nitrates.

Hydrogen sulfide produced (Reid, New Zealand Jour. Sci. and Tech., 22, 1938, 60).

Indole not produced.

No gas from glucose, lactose or mannitol.

Starch hydrolyzed (Reid, loc. cit.).

Aerobic.

Temperature relations: Optimum, between 25° and 34° C. Minimum, 10° C. Maximum, 38° C. (Okabe, Jour. Soc. Trop. Agr., 4, 1932, 476).

Source: Isolated from canker on orange.

Habitat: Produces a canker on many species of Citrus and related plants.

13. Xanthomonas clerodendri Patel et al., 1952. (Xanthomonas clerodendroni (sic) Patel, Kulkarni and Dhande, Curr. Sci., 21, 1952, 74.)

cle.ro.den'dri. M.L. neut.n. Clerodendron generic name of the plant host; M.L. gen.noun clerodendri of Clerodendron.

Rods, 0.5 by 1.1 microns, occurring singly or in chains. Encapsulated. Gram-negative.

Gelatin: Liquefied.

Potato-glucose agar colonies: Circular, 1.8 cm in diameter in 7 days, margins entire. Pale lemon-yellow.

Litmus milk: Casein digested. Litmus reduced and milk peptonized.

Hydrogen sulfide produced.

Nitrites not produced from nitrates.

Acid but no gas from glucose, sucrose and lactose. No growth in salicin.

Starch hydrolyzed.

Optimum temperature, about 31° C. Thermal death point, 51° C.

Source: From a leaf spot on Clerodendron phlomoides.

Habitat: Pathogenic on Clerodendron phlomoides.

14. Xanthomonas corylina (Miller et al., 1940) Starr and Burkholder, 1942. (Miller, Bollen, Simmons, Gross and Barss, Phytopath., 30, 1940, 731; Starr and Burkholder, Phytopath., 32, 1942, 598.)

co.ry.li'na. Gr. corylus the hazel; M.L. adj. corylinus pertaining to hazel.

Rods 0.5 to 0.7 by 1.1 to 3.8 microns.

Motile with a polar flagellum. Encapsulated. Gram-negative.

Gelatin: Liquefied.

Nutrient glucose-agar streaks: Growth abundant, filiform, convex, glistening, smooth, opaque, pale lemon-yellow, viscid.

Broth: Turbid. Ring formed in 2 to 5 days.

Milk: Enzymatic curd that is slowly