670 



INDEX 



Bacterium savastanoi, undulate-erose 



colonies on gelatin, 398, 403, 405 



varieties of olive resistant to, 410 



Bacterium solanacearum EFS, 177. 



See also Brown rot of Solanaceae. 

 aerobism, 186 



appearance of the disease, 178 

 bipolar staining, 186 

 colonies, figures illustrating, 190, 



191 



cultuial characteristicf , 182 

 dark stain on steamed potato, 186 

 distortions of infected plants, 49, 



179 



duration of virulence, 34 

 dwarfing of infected plants, 48, 49, 



184, 189 

 flagella of, 192 

 fluid colonies, 191 

 geographical distribution, 182 

 growth on or in 



agar, 186 



gelatin, 186 



non-growth in Cohn's solution, 



186 



host plants, 177 

 inoculation technic of, 188 

 insects may distribute, 199 

 isolation of, from diseased plants, 



188 



literature, 200 



loss of virulence on media, 186 

 loss of virulence in soils, 195 

 method of infection in Sumatra, 21 

 morphology, 182 

 most susceptible age of host, 8 

 motility, how best observed, 197 

 nematodes and, 181 

 on beans, 178 

 on egg plant, 177 

 on potato, 177, 178.' 180 

 on Ricinus, 184 

 on sunflower, 185 

 on tobacco, 180, 181 

 on tomato, 178 

 opalescent colonies of, 182 

 plants for inoculation experiments, 



189 



pure cultures, method for obtain- 

 ing, 188 



Bacterium solanacearum, recovery of 



plant from infection with, 18 

 reduces nitrates, 186 

 renders milk alkaline, 186 

 roots, entrance through broken, 



181 



rotation of crops advised, 200 

 sensitive to drying, 36, 186 

 soil organism harmful to, 195 

 stain in tissues due to, 180, 183 

 stock cultures, care of, 188 

 tyloses due to, 477 

 t\vo strains of, 188 

 type of disease caused by, 177 

 virulence lost quickly, 186 

 weeds subject to, 178, 200 

 well-water infected by, 21 

 var. asiaticum EFS, 188 

 Bacterium syringae (Van Hall) Giis- 



sow, 35, 473 

 cause of lilac blight, 35 

 Bacterium translucens Jones, Johnson 



and Reddy, 36, 329, 473 

 Bacterium translucens var. undulosum 

 Smith, Jones and Reddy, 474 

 colonies of, 20, 26, 27, 28, 29, 31, 



32 



destroyed by formalin, 70 

 effect on wheat kernels, 56 

 resistance to drying, 36 

 resistance to sunlight, 36 

 signs of, on wheat heads, 22, 23, 



24 



variable severity of. 51 

 Bacterium tumefaciens Smith and 

 Townsend, 413. (See also Crown 

 gall.) 



acid-forming, 426 

 action on plant tissue (hyper- 



plasial), 46 



animal inoculations with, 36 

 appearance of tissues infected with, 



413 



cause of a disease in man, not es- 

 tablished, 36 

 chemical products of metabolism 



of, 457, 483, 558 

 colonies of, 438, 461, 462 

 Congo red absorbed by, 426 

 cultural characters, 421 



