- Volume 94, Issue 1, 1976
Volume 94, Issue 1, 1976
- Short Communications
-
- Taxonomy
-
-
-
Peptococcus heliotrinreducans, sp.nov., a Cytochrome-producing Anaerobe which Metabolizes Pyrrolizidine Alkaloids
More LessSummary: Several strains of a new, obligately anaerobic, Gram-positive coccus were isolated from sheep rumen contents. An important distinctive feature was their reductive cleavage of hepatotoxic pyrrolizidines, using hydrogen gas or formate as hydrogen donor. With the same hydrogen donors, the organism reduced nitrate and fumarate. In all cases, the reductive metabolism formed part of an energy-giving sequence used by the organism for growth. This new coccus also utilized energy obtained by dissimilation of arginine. Enzymic hydrolysates of casein and yeast autolysate were satisfactory substrates for growth but no strain fermented carbohydrates. Ultrasonic extracts of the coccus contained a c-type cytochrome. The characteristics of the organism are consistent with its allocation to the genus Peptococcus within which it differs significantly from currently recognized species. The name Peptococcus heliotrinreducans is proposed for this new species, and a reliable method for isolating it is described.
-
-
-
-
A Taxonomic Study of the Aeromonas hydrophila-Aeromonas punctata Group
More LessSummary: A total of 203 characters has been determined for 68 strains of Aeromonas belonging to the Aeromonas hydrophila-A. punctata group. The results have been subjected to computer analysis using the coefficient of Jaccard-Sneath and the strains clustered by the method of aggregation according to the variance.
The 68 strains can be divided into two well-segregated classes on the basis of 59 variable characters, of which seven are of diagnostic value. The two classes are considered as two separate species. The first one (42 strains) is assigned to the type species of the genus, A. hydrophila, and it appears that the species name, A. punctata, is an illegitimate synonym for A. hydrophila. The second (26 strains) constitutes a new species for which the name A. sobria sp.nov. is proposed. The type strain of this new species has been deposited under the reference CIP7433 (our strain 208).
-
-
-
Classification of Micrococci on the Basis of Deoxyribonucleic Acid Homology
More LessSummary: The DNA homology relationships of 25 micrococci (15 strains of Micrococcus, eight strains of Sarcina and two strains of Staphylococcus) were studied by the deoxyribonucleic acid hybridization method using nuclease S1, an endonuclease specific for single-stranded DNA molecules. Nineteen of the strains were classified into three groups. Group I contained Micrococcus lysodeikticus iam1056, M. luteus iam11010, M. flavus iam12005 and iam12006, Sarcina flava iam12007 and iam12008, S. subflava iam12009, S. lutea atcc381 and atcc382, and M. luteus iam11006. Group II contained M. roseus iam1315, atcc412, atcc185 and iam1295. Group III contained S. lutea iam1099, ifo3232 and atcc383, M. varians atcc399 and Staphylococcus lactis atcc15306. Micrococcus luteus iam1097, M. varians atcc19099 and atcc19100, M. conglomeratus iam1459 and iam1470, and St. aureus iam1011 could not be assigned to any of the three groups.
The grouping corresponds to that derived from the results of differential lysis by lysozyme, ‘lytic enzyme 2’ from Cytophaga sp., or Streptomyces albus G enzyme; and to types of peptidoglycan in the cell walls and genetic transformation. The usefulness of classification based on sensitivity to various lytic enzymes was demonstrated. Group I probably coincides with M. luteus of Bergey’s Manual of Determinative Bacteriology (1974), and groups II and III with M. roseus and M. varians respectively.
-
-
-
Specificity of Cytoplasmic and Cell-wall Antigens from Four Species of Phytophthora
More LessSummary: Cytoplasmic and cell-wall antigens and antisera were prepared from four Phytophthora species, and cell-wall antigens were prepared from two Pythium species. Immunodiffusion of the Pythium and Phytophthora cell-wall antigens showed that the two Pythium species did not cross-react with the Phytophthora cell-wall antisera. Immunodiffusion analysis of both cell-wall and cytoplasmic antigens of Phytophthora revealed some degree of specificity between species but not between A1 and A2 mating types in Phytophthora cinnamomi. Species specificity was improved by using indirect fluorescent antibody techniques and by the use of cross-absorbed sera. Agglutination and quantitative precipitation techniques did not significantly improve specificity.
-
Volumes and issues
-
Volume 170 (2024)
-
Volume 169 (2023)
-
Volume 168 (2022)
-
Volume 167 (2021)
-
Volume 166 (2020)
-
Volume 165 (2019)
-
Volume 164 (2018)
-
Volume 163 (2017)
-
Volume 162 (2016)
-
Volume 161 (2015)
-
Volume 160 (2014)
-
Volume 159 (2013)
-
Volume 158 (2012)
-
Volume 157 (2011)
-
Volume 156 (2010)
-
Volume 155 (2009)
-
Volume 154 (2008)
-
Volume 153 (2007)
-
Volume 152 (2006)
-
Volume 151 (2005)
-
Volume 150 (2004)
-
Volume 149 (2003)
-
Volume 148 (2002)
-
Volume 147 (2001)
-
Volume 146 (2000)
-
Volume 145 (1999)
-
Volume 144 (1998)
-
Volume 143 (1997)
-
Volume 142 (1996)
-
Volume 141 (1995)
-
Volume 140 (1994)
-
Volume 139 (1993)
-
Volume 138 (1992)
-
Volume 137 (1991)
-
Volume 136 (1990)
-
Volume 135 (1989)
-
Volume 134 (1988)
-
Volume 133 (1987)
-
Volume 132 (1986)
-
Volume 131 (1985)
-
Volume 130 (1984)
-
Volume 129 (1983)
-
Volume 128 (1982)
-
Volume 127 (1981)
-
Volume 126 (1981)
-
Volume 125 (1981)
-
Volume 124 (1981)
-
Volume 123 (1981)
-
Volume 122 (1981)
-
Volume 121 (1980)
-
Volume 120 (1980)
-
Volume 119 (1980)
-
Volume 118 (1980)
-
Volume 117 (1980)
-
Volume 116 (1980)
-
Volume 115 (1979)
-
Volume 114 (1979)
-
Volume 113 (1979)
-
Volume 112 (1979)
-
Volume 111 (1979)
-
Volume 110 (1979)
-
Volume 109 (1978)
-
Volume 108 (1978)
-
Volume 107 (1978)
-
Volume 106 (1978)
-
Volume 105 (1978)
-
Volume 104 (1978)
-
Volume 103 (1977)
-
Volume 102 (1977)
-
Volume 101 (1977)
-
Volume 100 (1977)
-
Volume 99 (1977)
-
Volume 98 (1977)
-
Volume 97 (1976)
-
Volume 96 (1976)
-
Volume 95 (1976)
-
Volume 94 (1976)
-
Volume 93 (1976)
-
Volume 92 (1976)
-
Volume 91 (1975)
-
Volume 90 (1975)
-
Volume 89 (1975)
-
Volume 88 (1975)
-
Volume 87 (1975)
-
Volume 86 (1975)
-
Volume 85 (1974)
-
Volume 84 (1974)
-
Volume 83 (1974)
-
Volume 82 (1974)
-
Volume 81 (1974)
-
Volume 80 (1974)
-
Volume 79 (1973)
-
Volume 78 (1973)
-
Volume 77 (1973)
-
Volume 76 (1973)
-
Volume 75 (1973)
-
Volume 74 (1973)
-
Volume 73 (1972)
-
Volume 72 (1972)
-
Volume 71 (1972)
-
Volume 70 (1972)
-
Volume 69 (1971)
-
Volume 68 (1971)
-
Volume 67 (1971)
-
Volume 66 (1971)
-
Volume 65 (1971)
-
Volume 64 (1970)
-
Volume 63 (1970)
-
Volume 62 (1970)
-
Volume 61 (1970)
-
Volume 60 (1970)
-
Volume 59 (1969)
-
Volume 58 (1969)
-
Volume 57 (1969)
-
Volume 56 (1969)
-
Volume 55 (1969)
-
Volume 54 (1968)
-
Volume 53 (1968)
-
Volume 52 (1968)
-
Volume 51 (1968)
-
Volume 50 (1968)
-
Volume 49 (1967)
-
Volume 48 (1967)
-
Volume 47 (1967)
-
Volume 46 (1967)
-
Volume 45 (1966)
-
Volume 44 (1966)
-
Volume 43 (1966)
-
Volume 42 (1966)
-
Volume 41 (1965)
-
Volume 40 (1965)
-
Volume 39 (1965)
-
Volume 38 (1965)
-
Volume 37 (1964)
-
Volume 36 (1964)
-
Volume 35 (1964)
-
Volume 34 (1964)
-
Volume 33 (1963)
-
Volume 32 (1963)
-
Volume 31 (1963)
-
Volume 30 (1963)
-
Volume 29 (1962)
-
Volume 28 (1962)
-
Volume 27 (1962)
-
Volume 26 (1961)
-
Volume 25 (1961)
-
Volume 24 (1961)
-
Volume 23 (1960)
-
Volume 22 (1960)
-
Volume 21 (1959)
-
Volume 20 (1959)
-
Volume 19 (1958)
-
Volume 18 (1958)
-
Volume 17 (1957)
-
Volume 16 (1957)
-
Volume 15 (1956)
-
Volume 14 (1956)
-
Volume 13 (1955)
-
Volume 12 (1955)
-
Volume 11 (1954)
-
Volume 10 (1954)
-
Volume 9 (1953)
-
Volume 8 (1953)
-
Volume 7 (1952)
-
Volume 6 (1952)
-
Volume 5 (1951)
-
Volume 4 (1950)
-
Volume 3 (1949)
-
Volume 2 (1948)
-
Volume 1 (1947)