|
|
char = M;code = 77
char = i;code = 105
char = c;code = 99
char = r;code = 114
char = o;code = 111
char = a;code = 97
char = e;code = 101
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = ,;code = 44
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = (;code = 40
char = I;code = 73
char = I;code = 73
char = );code = 41
char = -;code = 45
char = d;code = 100
char = e;code = 101
char = p;code = 112
char = e;code = 101
char = n;code = 110
char = d;code = 100
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = g;code = 103
char = r;code = 114
char = o;code = 111
char = w;code = 119
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = (;code = 40
char = I;code = 73
char = I;code = 73
char = );code = 41
char = ;code = 32
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = d;code = 100
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = D;code = 68
char = e;code = 101
char = c;code = 99
char = h;code = 104
char = l;code = 108
char = o;code = 111
char = r;code = 114
char = o;code = 111
char = s;code = 115
char = p;code = 112
char = i;code = 105
char = r;code = 114
char = i;code = 105
char = l;code = 108
char = l;code = 108
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = .;code = 46
result sql = Microaerophilic, Fe(II)-dependent growth and Fe(II) oxidation by a Dechlorospirillum species.
Microaerophilic, Fe(II)-dependent growth and Fe(II) oxidation by a Dechlorospirillum species.char = A;code = 65
char = ;code = 32
char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = D;code = 68
char = e;code = 101
char = c;code = 99
char = h;code = 104
char = l;code = 108
char = o;code = 111
char = r;code = 114
char = o;code = 111
char = s;code = 115
char = p;code = 112
char = i;code = 105
char = r;code = 114
char = i;code = 105
char = l;code = 108
char = l;code = 108
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = o;code = 111
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = f;code = 102
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = (;code = 40
char = I;code = 73
char = I;code = 73
char = );code = 41
char = -;code = 45
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = d;code = 100
char = i;code = 105
char = z;code = 122
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ,;code = 44
char = ;code = 32
char = o;code = 111
char = p;code = 112
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = -;code = 45
char = g;code = 103
char = r;code = 114
char = a;code = 97
char = d;code = 100
char = i;code = 105
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = -;code = 45
char = c;code = 99
char = u;code = 117
char = l;code = 108
char = t;code = 116
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = n;code = 110
char = r;code = 114
char = i;code = 105
char = c;code = 99
char = h;code = 104
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = u;code = 117
char = s;code = 115
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = o;code = 111
char = c;code = 99
char = u;code = 117
char = l;code = 108
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = f;code = 102
char = r;code = 114
char = o;code = 111
char = m;code = 109
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = c;code = 99
char = i;code = 105
char = r;code = 114
char = c;code = 99
char = u;code = 117
char = m;code = 109
char = n;code = 110
char = e;code = 101
char = u;code = 117
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = l;code = 108
char = ,;code = 44
char = ;code = 32
char = f;code = 102
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = h;code = 104
char = w;code = 119
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = c;code = 99
char = r;code = 114
char = e;code = 101
char = e;code = 101
char = k;code = 107
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = s;code = 115
char = h;code = 104
char = o;code = 111
char = w;code = 119
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = p;code = 112
char = i;code = 105
char = o;code = 111
char = u;code = 117
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = m;code = 109
char = o;code = 111
char = u;code = 117
char = n;code = 110
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = (;code = 40
char = I;code = 73
char = I;code = 73
char = I;code = 73
char = );code = 41
char = ;code = 32
char = (;code = 40
char = h;code = 104
char = y;code = 121
char = d;code = 100
char = r;code = 114
char = );code = 41
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = e;code = 101
char = c;code = 99
char = i;code = 105
char = p;code = 112
char = i;code = 105
char = t;code = 116
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = .;code = 46
char = ;code = 32
char = I;code = 73
char = n;code = 110
char = ;code = 32
char = g;code = 103
char = r;code = 114
char = a;code = 97
char = d;code = 100
char = i;code = 105
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = c;code = 99
char = u;code = 117
char = l;code = 108
char = t;code = 116
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = d;code = 100
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = o;code = 111
char = x;code = 120
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = d;code = 100
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = v;code = 118
char = i;code = 105
char = s;code = 115
char = u;code = 117
char = a;code = 97
char = l;code = 108
char = i;code = 105
char = z;code = 122
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = p;code = 112
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = o;code = 111
char = x;code = 120
char = y;code = 121
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = ;code = 32
char = p;code = 112
char = e;code = 101
char = n;code = 110
char = e;code = 101
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ,;code = 44
char = ;code = 32
char = D;code = 68
char = e;code = 101
char = c;code = 99
char = h;code = 104
char = l;code = 108
char = o;code = 111
char = r;code = 114
char = o;code = 111
char = s;code = 115
char = p;code = 112
char = i;code = 105
char = r;code = 114
char = i;code = 105
char = l;code = 108
char = l;code = 108
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = s;code = 115
char = p;code = 112
char = .;code = 46
char = ;code = 32
char = s;code = 115
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = M;code = 77
char = 1;code = 49
char = ;code = 32
char = s;code = 115
char = h;code = 104
char = o;code = 111
char = w;code = 119
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = (;code = 40
char = I;code = 73
char = I;code = 73
char = );code = 41
char = -;code = 45
char = d;code = 100
char = e;code = 101
char = p;code = 112
char = e;code = 101
char = n;code = 110
char = d;code = 100
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = g;code = 103
char = r;code = 114
char = o;code = 111
char = w;code = 119
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = c;code = 99
char = -;code = 45
char = a;code = 97
char = n;code = 110
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = f;code = 102
char = a;code = 97
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = u;code = 117
char = n;code = 110
char = a;code = 97
char = b;code = 98
char = l;code = 108
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = u;code = 117
char = t;code = 116
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = z;code = 122
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = l;code = 108
char = f;code = 102
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = n;code = 110
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = d;code = 100
char = o;code = 111
char = n;code = 110
char = o;code = 111
char = r;code = 114
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = b;code = 98
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = s;code = 115
char = o;code = 111
char = ;code = 32
char = g;code = 103
char = r;code = 114
char = e;code = 101
char = w;code = 119
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = e;code = 101
char = t;code = 116
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = c;code = 99
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = d;code = 100
char = o;code = 111
char = n;code = 110
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = u;code = 117
char = n;code = 110
char = d;code = 100
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = b;code = 98
char = o;code = 111
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = r;code = 114
char = o;code = 111
char = a;code = 97
char = e;code = 101
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = n;code = 110
char = i;code = 105
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = -;code = 45
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = d;code = 100
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = b;code = 98
char = u;code = 117
char = t;code = 116
char = ;code = 32
char = w;code = 119
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = c;code = 99
char = a;code = 97
char = p;code = 112
char = a;code = 97
char = b;code = 98
char = l;code = 108
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = o;code = 111
char = r;code = 114
char = g;code = 103
char = a;code = 97
char = n;code = 110
char = o;code = 111
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = (;code = 40
char = I;code = 73
char = I;code = 73
char = I;code = 73
char = );code = 41
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = n;code = 110
char = i;code = 105
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = -;code = 45
char = d;code = 100
char = e;code = 101
char = p;code = 112
char = e;code = 101
char = n;code = 110
char = d;code = 100
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = (;code = 40
char = I;code = 73
char = I;code = 73
char = );code = 41
char = ;code = 32
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = d;code = 100
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = .;code = 46
char = ;code = 32
char = A;code = 65
char = l;code = 108
char = t;code = 116
char = h;code = 104
char = o;code = 111
char = u;code = 117
char = g;code = 103
char = h;code = 104
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = m;code = 109
char = b;code = 98
char = e;code = 101
char = r;code = 114
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = u;code = 117
char = s;code = 115
char = ;code = 32
char = D;code = 68
char = e;code = 101
char = c;code = 99
char = h;code = 104
char = l;code = 108
char = o;code = 111
char = r;code = 114
char = o;code = 111
char = s;code = 115
char = p;code = 112
char = i;code = 105
char = r;code = 114
char = i;code = 105
char = l;code = 108
char = l;code = 108
char = u;code = 117
char = m;code = 109
char = ;code = 32
char = a;code = 97
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = i;code = 105
char = m;code = 109
char = a;code = 97
char = r;code = 114
char = i;code = 105
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = k;code = 107
char = n;code = 110
char = o;code = 111
char = w;code = 119
char = n;code = 110
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = c;code = 99
char = h;code = 104
char = l;code = 108
char = o;code = 111
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = n;code = 110
char = i;code = 105
char = t;code = 116
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = d;code = 100
char = u;code = 117
char = c;code = 99
char = e;code = 101
char = r;code = 114
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = o;code = 111
char = u;code = 117
char = r;code = 114
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = u;code = 117
char = l;code = 108
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = g;code = 103
char = g;code = 103
char = e;code = 101
char = s;code = 115
char = t;code = 116
char = ;code = 32
char = t;code = 116
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char = a;code = 97
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char = m;code = 109
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char = t;code = 116
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char = m;code = 109
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char = ;code = 32
char = t;code = 116
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char = t;code = 116
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char = z;code = 122
char = o;code = 111
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char = s;code = 115
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char = t;code = 116
char = e;code = 101
char = r;code = 114
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char = s;code = 115
char = .;code = 46
char = <;code = 60
char = b;code = 98
char = r;code = 114
char = /;code = 47
char = >;code = 62
result sql = A species of Dechlorospirillum was isolated from an Fe(II)-oxidizing, opposing-gradient-culture enrichment using an inoculum from a circumneutral, freshwater creek that showed copious amounts of Fe(III) (hydr)oxide precipitation. In gradient cultures amended with a redox indicator to visualize the depth of oxygen penetration, Dechlorospirillum sp. strain M1 showed Fe(II)-dependent growth at the oxic-anoxic interface and was unable to utilize sulfide as an alternate electron donor. The bacterium also grew with acetate as an electron donor under both microaerophilic and nitrate-reducing conditions, but was incapable of organotrophic Fe(III) reduction or nitrate-dependent Fe(II) oxidation. Although members of the genus Dechlorospirillum are primarily known as perchlorate and nitrate reducers, our results suggest that some species are members of the microbial communities involved in iron redox cycling at the oxic-anoxic transition zones in freshwater sediments.
char = i;code = 105
char = c;code = 99
char = r;code = 114
char = o;code = 111
char = a;code = 97
char = e;code = 101
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = ,;code = 44
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = (;code = 40
char = I;code = 73
char = I;code = 73
char = );code = 41
char = -;code = 45
char = d;code = 100
char = e;code = 101
char = p;code = 112
char = e;code = 101
char = n;code = 110
char = d;code = 100
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = g;code = 103
char = r;code = 114
char = o;code = 111
char = w;code = 119
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = F;code = 70
char = e;code = 101
char = (;code = 40
char = I;code = 73
char = I;code = 73
char = );code = 41
char = ;code = 32
char = o;code = 111
char = x;code = 120
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char = d;code = 100
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
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char = y;code = 121
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char = D;code = 68
char = e;code = 101
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char = h;code = 104
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char = o;code = 111
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char = p;code = 112
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char = r;code = 114
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char = l;code = 108
char = l;code = 108
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char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
char = i;code = 105
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char = s;code = 115
char = .;code = 46
result sql = Microaerophilic, Fe(II)-dependent growth and Fe(II) oxidation by a Dechlorospirillum species.
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char = o;code = 111
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char = l;code = 108
char = l;code = 108
char = u;code = 117
char = m;code = 109
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char = w;code = 119
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char = i;code = 105
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char = e;code = 101
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char = c;code = 99
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char = e;code = 101
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char = I;code = 73
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char = ;code = 32
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result sql = A species of Dechlorospirillum was isolated from an Fe(II)-oxidizing, opposing-gradient-culture enrichment using an inoculum from a circumneutral, freshwater creek that showed copious amounts of Fe(III) (hydr)oxide precipitation. In gradient cultures amended with a redox indicator to visualize the depth of oxygen penetration, Dechlorospirillum sp. strain M1 showed Fe(II)-dependent growth at the oxic-anoxic interface and was unable to utilize sulfide as an alternate electron donor. The bacterium also grew with acetate as an electron donor under both microaerophilic and nitrate-reducing conditions, but was incapable of organotrophic Fe(III) reduction or nitrate-dependent Fe(II) oxidation. Although members of the genus Dechlorospirillum are primarily known as perchlorate and nitrate reducers, our results suggest that some species are members of the microbial communities involved in iron redox cycling at the oxic-anoxic transition zones in freshwater sediments.
Publication: FEMS Microbiol. Lett. 2011 Jun ;319(1)::51-7. :doi: 10.1111/j.1574-6968.2011.02265.x.
Publication Date: 2011 Jun
Study Author(s): Picardal, Flynn W;Zaybak, Zehra;Chakraborty, Anirban;Schieber, Jürgen;Szewzyk, Ulrich;
Institution: School of Public and Environmental Affairs, Indiana University, Bloomington, IN, USA. [email protected]
Shortcut link to this study:
Publication Date: 2011 Jun
Study Author(s): Picardal, Flynn W;Zaybak, Zehra;Chakraborty, Anirban;Schieber, Jürgen;Szewzyk, Ulrich;
Institution: School of Public and Environmental Affairs, Indiana University, Bloomington, IN, USA. [email protected]
Shortcut link to this study:
A species of Dechlorospirillum was isolated from an Fe(II)-oxidizing, opposing-gradient-culture enrichment using an inoculum from a circumneutral, freshwater creek that showed copious amounts of Fe(III) (hydr)oxide precipitation. In gradient cultures amended with a redox indicator to visualize the depth of oxygen penetration, Dechlorospirillum sp. strain M1 showed Fe(II)-dependent growth at the oxic-anoxic interface and was unable to utilize sulfide as an alternate electron donor. The bacterium also grew with acetate as an electron donor under both microaerophilic and nitrate-reducing conditions, but was incapable of organotrophic Fe(III) reduction or nitrate-dependent Fe(II) oxidation. Although members of the genus Dechlorospirillum are primarily known as perchlorate and nitrate reducers, our results suggest that some species are members of the microbial communities involved in iron redox cycling at the oxic-anoxic transition zones in freshwater sediments.
PMID: 21410510
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