FAMILY PSEUDOMONADACEAE 



143 



L. Andropogon , a generic name (a syn- 

 onym of Holcvs). 



Description from Elliott and Smith 

 (loc. cit.). 



Rods: 0.64 by 1.76 microns. Motile 

 with one to several bipolar flagella. 

 Capsules. Gram-negative. 



Gelatin: Feeble liquefaction or none. 



Beef -extract agar colonies : Slow -grow- 

 ing, round, smooth, glistening, viscid, 

 white. 



Broth : Growth slow with moderate 

 turbidity in 48 hours. A thin pellicle. 



Milk: Alkaline and clears. 



Nitrites not produced from nitrates. 



Indole not formed. 



No H2S formed. 



Not lipolytic (Starr and Burkholder, 

 Phytopath., 32, 1942, 601). 



Acid but not gas from glucose, arabi- 

 nose, fructose and xylose. No acid from 

 .sucrose, maltose, lactose, raffinose, glyc- 

 erol and mannitol. 



Starch partially digested. 



Optimum temperature 22' to 30°C. 

 Ma.ximum 37° to 38 °C. Minimum 1.5°C. 



Optimum pH 6.0 to 6.6. Maximum 

 8.3 to 8.6. Minimum 5.0. 



Source : Elliott used for her description 

 4 cultures isolated from lesions on sorgo, 

 sorghum and broom-corn. 



Habitat : Pathogenic on sorghum, Hol- 

 cus sorghum. 



144. Pseudomonas woodsii (Smith) 

 Stevens. {Bacterium woodsii Erw. 

 Smith, Bact. in Relation to Plant Dis- 

 eases, 2, 1911, 62; Stevens, Plant Disease 

 Fungi, New York, 1925, 39; Phytomonas 

 woodsii Bergey et al., Manual, 3rd ed., 

 1930, 256.) Named for A. F. Woods, 

 American plant pathologist. 



Description from Burkholder and Gu- 

 terman, Phytopath., 25, 1935, 118. 



Rods: 0.67 by 1.56 microns. Motile 

 with a polar flagellum. Gram-negative. 



Gelatin: No liquefaction. 



Beef -extract agar slants : Growth slow 

 and scant, filiform, creamy, butyrous. 



Broth: Turbid. 



Milk: Becomes alkaline but otherwise 

 little changed. 



Nitrites not produced from nitrates. 



Indole not formed. 



No HoS formed. 



Not lipolytic (Starr and Burkholder, 

 Phytopath., 32, 1942, 601). 



Acid but not gas from glucose, fruc- 

 tose, galactose, arabinose, xylose, rham- 

 nose, lactose, glycerol and mannitol. 

 Alkaline reaction from salts of acetic, 

 citric, malic and succinic acids. Sucrose, 

 maltose, salicin, and lactic and formic 

 acids not fermented. Starch not hy- 

 drolyzed. 



Slight growth in broth plus 3 per cent 

 salt. 



Aerobic. 



Source : Isolated from water-soaked 

 lesions on carnation leaves. 



Habitat: Pathogenic on carnation, 

 Dianthus caryophyllvs. 



145. Pseudomonas panici-miliacei 

 (Ikata and Yamauchi) comb. nov. {Bac- 

 terium panici-jriiliacei Ikata and Yamau- 

 chi, Jour. Plant Protect., 18, 1931, 35; 

 Phytomonas panici-miliacei Burkholder, 

 in Manual, 5th ed., 1939, 204.) From 

 M. L. Panicum miliaceum. 



Description translated by Dr. K. 

 Togas hi. 



Rods: 0.8 to 1.1 by 1.8 to 2.6 microns. 

 Motile, with a single flagellum. Gram- 

 negative. 



Gelatin : Not liquefied. 



Potato-agar plates : Growth moderate, 

 whitish, then tinged with light orange, 

 undulating margins. 



Broth: Turbid, white pellicle formed. 



Milk: No coagulation and slow diges- 

 tion. Alkaline. 



Nitrites are produced from nitrates. 



Indole not formed. 



No H2S produced. 



No acid and no gas from sucrose, glu- 

 cose, lactose, glycerol and sodium 

 nitrate. 



Starch not hydrolyzed. 



Optimum temperature 30° to SS'C. 



