130 



ORDER I. PSEUDOMONADALES 



Milk: Turns alkaline and clears, litmus 

 reduced. 



Nitrites not produced from nitrates. 



Indole produced in 14 days. 



Hydrogen sulfide not produced. 



Acid but no gas from glucose, sucrose, lac- 

 tose and glycerol. 



Temperature: No growth at 35° C. 



Aerobic, obligate. 



Source: Isolated from Erodium texanum 

 and 4 varieties of Pelargonium. 



Habitat: Causes a leaf spot of Erodium 

 texanum and Pelargonium spp. 



83. Pseudomonas lapsa (Ark, 1940) 

 Starr and Burkholder, 1942. {Phytomonas 

 lapsa Ark, Phytopath., 30, 1940, 1 ; Starr and 

 Burkholder, Phytopath., SS, 1942, 601.) 



lap'sa. L. V. labor to fall down, slip; L. 

 part. adj. lapsus fallen down. 



Rods 0.56 by 1.55 microns. Motile, with 

 1 to 4 polar flagella. Gram reaction not re- 

 ported; presumably Gram-negative. 



Produces fluorescence in Uschinsky's, 

 Fermi's and Cohn's solutions. 



Gelatin: Liquefied (Burkholder). 



Nitrites produced from nitrates (Burk- 

 holder and Starr, Phytopath., 38, 1948, 498). 



Acid but no gas from glucose, sucrose, 

 maltose, lactose, glycerol, arabinose, xy- 

 lose, galactose, raffinose and mannitol. 



Slight grow^th in broth plus 5 per cent salt 

 (Burkholder). 



Relationship to other species: Resembles 

 Pseudomonas desaiana. 



Source: Isolated from stalk rot of field 

 corn in California; also from Diabrotica 

 beetles. 



Habitat: Pathogenic on corn and sugar 

 cane. 



84. Pseudomonas martyniae (Elliott, 

 1924) Stapp, 1928. {Bacterium martyniae 

 Elliott, Jour. Agr. Res., 29, 1924, 490; Stapp, 

 in Sorauer, Handbuch der Pflanzenkrank- 

 heiten,^, 5 Aufl., 1928,278.) 



mar.tyn'i.ae. M.L. Martynia genus of 

 flowering plants; M.L. gen.fem. martyniae of 

 Martynia. 



Rods, 0.59 to 1.68 microns, occurring in 

 chains. Encapsulated. Motile with one to 

 several bipolar flagella. Gram-negative. 



Green fluorescent pigment produced. 



Gelatin: Liquefied. 



Beef agar colonies: White, round, smooth, 

 glistening, raised. 



Broth: Clouding in bands. Thin pellicle. 

 Small crystals. 



Milk: Soft acid curd with peptonization. 



Nitrites jiroduced from nitrates after 2 

 weeks. 



Indole not produced. 



Hydrogen sulfide production slight. 



Acid but no gas from glucose, galactose, 

 arabinose and sucrose. No acid from rham- 

 nose, lactose, maltose, raffinose, mannitol 

 or glycerol. 



Starch hydrolysis none or feeble. 



Temperature relations: Optimum, 26° C. 

 Minimum, 1.5° C. Maximum, 37° C. 



Chemical tolerance: Optimum pH, 6.0 to 

 6.7. pH range, 5.4 to 8.9. 



Aerobic. 



Source: Isolated from diseased leaves of 

 the unicorn plant from Kansas. 



Habitat: Pathogenic on Martynia louisi- 

 ana. 



85. Pseudomonas matthiolae (Briosi and 

 Pavarino, 1912) Dowson, 1943. {Bacterium 

 matthiolae Briosi and Pavarino, Atti della 

 Reale Accad. dei Lincei Rend.,^i, 1912, 216; 

 Dowson, Trans. Brit. Mycol. Soc, 26, 1943, 

 10.) 



mat.thi'o.lae. Mattioli patronymic; M.L. 

 fern. noun Matthiola generic name of stock; 

 M.L. fern. gen. noun matthiolae of Matthiola. 



Rods 0.4 to 0.6 by 2.0 to 4.0 microns. 

 Gram-positive. Gram-negative (Mushin, 

 Proc. Roy. Soc. Victoria, 53, 1941, 201). 



Green fluorescent pigment produced in 

 culture. 



Gelatin: Liquefied. 



Beef agar colonies: White, circular, 

 slightly elevated, margins smooth. 



Broth: Slightly turbid. Becomes pale 

 green. 



Milk: Coagulation with acid reaction. 



Nitrites produced from nitrates (Mushin, 

 Proc. Trans. Brit. Mycol. Soc, 26, 1943, 10). 



Hydrogen sulfide not produced. 



Acid from glucose, galactose, fructose, 

 mannose, rhamnose, glycerol, mannitol, 

 acetic acid, citric acid, formic acid, lactic 

 acid, malic acid and succinic acid. Feeble 

 acid from maltose. No acid or gas from lac- 



