L'ANTAGONISME DE CERTAINS MICRO-ORGANISMES ENVERS CORYNEBACTERIUM SEPEDONICUM

1947 ◽  
Vol 25c (6) ◽  
pp. 185-188
Author(s):  
Champlain Perrault
Keyword(s):  
Corynebacterium Sepedonicum

not available

ESSAI DE DIFFERENTS PRODUITS CHIMIQUES COMME DESINFECTANTS DES ECLATS (GERMES) DE POMMES DE TERRE INOCULES AVEC CORYNEBACTERIUM SEPEDONICUM

1960 ◽  
Vol 40 (2) ◽  
pp. 383-387
Author(s):  
R. Paquin ◽  
J. Santerre ◽  
H. Généreux ◽  
L. J. Coulombe
Keyword(s):  
Mercuric Chloride ◽  
Quaternary Ammonium Salts ◽  
Ammonium Salts ◽  
Effective Control ◽  
Potato Seed ◽  
Bacterial Ring Rot ◽  
Corynebacterium Sepedonicum ◽  
Mercury Compounds ◽  
Ring Rot ◽  
Potato Seed Piece

Forty-seven chemicals, including antibiotics, detergents, quaternary ammonium salts, mercury compounds, disinfectants and protectants, were tested for their effectiveness as potato seed piece disinfectants after inoculating each potato set with bacterial ring rot. None of the substances tested was as effective as a solution of acidified mercuric chloride (2:1000 + 1 per cent HCl) in a 10-minute dip treatment which gave 93 to 98 per cent control. A more effective control of the disease (100 per cent) was obtained when seed stock contained only 1 per cent diseased tubers.

LABORATORY DETECTION OF CORYNEBACTERIUM SEPEDONICUM, CAUSAL AGENT OF BACTERIAL RING ROT OF POTATOES

1956 ◽  
Vol 34 (1) ◽  
pp. 48-53 ◽  
Author(s):  
H. Katznelson ◽  
M. D. Sutton
Keyword(s):  
Plant Extracts ◽  
Causal Agent ◽  
Direct Examination ◽  
Bacterial Ring Rot ◽  
Serological Method ◽  
Corynebacterium Sepedonicum ◽  
Ring Rot ◽  
Incorrect Diagnosis ◽  
Typical Strain ◽  
Infected Material

Studies are described on the laboratory detection of bacterial ring rot of potatoes caused by Corynebacterium sepedonicum (Spieckermann and Kotthoff) Skaptason and Burkholder. A cultural–microscopic procedure, involving the preincubation of aseptically removed infected material on a suitable medium, was found in general to be more reliable than direct examination of Gram-stained smears from diseased material. This was especially noticeable with lightly infected potatoes. The use of both methods would likely decrease the possibility of incorrect diagnosis. A serological method also was found to be of value in detecting ring rot in tubers and in plant extracts. Antiserum for one typical strain of C. sepedonicum (CS850) agglutinated all strains tested, and also reacted with all infected samples examined but not with uninfected material. This organism might be used to prepare bulk antiserum for distribution to various laboratories engaged in the diagnosis of bacterial ring rot. Attempts to isolate a phage for C. sepedonicum were unsuccessful.

Bacterial wilt of potatoes. II. Serological relationship of two strains of Pseudomonas solanacearum and a culture of Corynebacterium sepedonicum

1961 ◽  
Vol 12 (5) ◽  
pp. 872 ◽  
Author(s):  
DE Harrison ◽  
H Freeman
Keyword(s):  
Bacterial Wilt ◽  
Pseudomonas Solanacearum ◽  
Serological Relationship ◽  
Corynebacterium Sepedonicum ◽  
Potential Value ◽  
Ring Rot ◽  
The Common ◽  
Relationship Of

Antisera were prepared to Victorian and Rhodesian strains of Pseudomonas solanacearum, and to a culture of the ring rot organism, Corynebacterium sepedonicum, from Canada. It was found that the two strains of Ps. Solanacearum were similar, though distinct serologically, and each quite different from C. sepedonicum, although there was some serological affinity between the three organisms. The common agglutinins were absorbed to produce specific absorbed serum for each organism, the potential value of which is briefly discussed.

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