Validity of the Genus Alcaligenes

Nitrogen Compounds Utilized by Alcaligenes Faecalis

“…Table 2 indicates the responses of the 4 cultures to 24 compounds used either slightly or not at all. It is seen that the ammonium salts supported slight growth of all cultures, in accordance with the observation of Conn (1942). All cultures also slightly used /3-alanine, uracil, leucine, glycine, tryptophan, and phenylalanine.…”

Transmittance of Tumor-Inducing Ability to Avirulent Crown-Gall and Related Bacteria

“…Coleman and Reicd (1949), using mainly serological criteria, reported inter conversion of A. radiobacter and A. tuwefaciens and Manil (personal commnunication) obtained transfei of Iroot nodule-inducinig properties froin rhIlizobia to A. radiobacter. W1-ith the exception of E. coli, the bacteria under consi(leration are related very closely morphologically (Brown and Leonard, 1932;Hofer, 1941), serologically (Stapp, 1927;Coleman and Reid, 1945), and biochemically (Riker et at., 1930, 1946). Conn (1942 placed them all in the same family (RI?izobiaceae).…”

AGROBACTERIUM TUMEFACIENS CONN I. Release of P 32 and S 35 in Vitro

“…Bacteria. Five strains of Agrobacterium tumefaciens (Conn, 1942;Smith and Townsend, 1907) were used: the highly virulent A6 and B6 strains, the semivirulent Hop 100 strain which fails to produce tumors on Chrysanthemnum frutescens, and two substrains of Stapp's Chrysanthemum frutescens IIB strain, the virulent IIBV7 and the nonpathogenic IIBNV6 derivatives isolated by Armin C. Braun. The 136 strain wNas used prefer-entially for most experiments because it tended to clump least and because its cultural aspects had been most carefully worked out in preliminary experiments.…”