III
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Transcript of III
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Paracoccus denitrificansParacoccus pantotrophus
Roseobacter denitrificansColneEstuaryAJ440472clone
ColneEstuaryAJ440474cloneG840-2CG840-1C
G857-5CG857-6H
G857-7AG840-2DG840-4BG857-7HG857-10AG840-10CG840-2EG857-5G
G840-9HG857-2F
G840-9DG857-2C
G857-4CV483-10G
G840-2FG857-11AV483-10EG840-9BG857-5BG840-4AG840-2HG840-1GG840-4C
V483-1FFG840-5F
G857-1HV483-6B
V483-2CCG840-1BV483-6EEV483-1GG
ColneEstuaryAJ440492cloneRalstonia eutropha
ColneEstuaryAJ440488cloneColneEstuaryAJ440483clone
ColneEstuaryAJ440476cloneV483-4AAG857-4A
G857-7DG857-9EV483-7C
V483-11AV483-11E
G840-9CG840-5AG840-2A
ColneEstuaryAJ440487cloneColneEstuaryAJ440482clone
ColneEstuaryAJ440484cloneColneEstuaryAJ440481clone
ColneEstuaryAJ440490cloneColneEstuaryAJ440479clone
Azoarcus evansiiKB740TAzoarcus toluvoransTd21TPseudomonas stutzeriJM300
Pseudomonas stutzeriThauera terpenica58EuTColneEstuaryAJ440491cloneColneEstuaryAJ440485clone
Thauera selenatisAXTThauera aromaticaK172T
Acidovorax sp2FB7Thauera chlorobenzoica3CB1
G857-4FColneEstuaryAJ440473clone
ColneEstuaryAJ440471cloneV483-1G
V483-9EV483-5FV483-3GG
Pseudomonas fluorescensColneEstuaryAJ440494isolate
V400-4HV400-1D
V400-2DV400-1FV400-3DV400-3EV400-4CV400-5DV400-6CV400-1H
V400-3BV400-5H
V400-2BV400-4BV400-5B
V400-2HV400-3H
V483-7FV483-9CV400-5F
Pseudomonas aeruginosaV400-4GV400-2GG840-4F
ColneEstuaryAJ440480cloneFullB9-12
FullC10-1V400-3A
V483-3BV400-4AV400-2E
V483-5GGColneEstuaryAJ440486clone
Azoarcustolulyticus2FB6ColneEstuaryAJ440478cloneColneEstuaryAJ440469clone
pA5wF16
wA15G840-4EColneEstuaryAJ440477clone
V483-7GV483-6EV483-10BV483-8H
G840-6CV483-3EE
G840-6FG857-7BG857-2E
G857-4EG857-1A
pB20V483-4E
V483-5CCV483-6BB
V483-11GG840-6A
G857-9BG840-9GG857-1DV483-6FFG857-9G
V483-4BG840-6BG857-1F
ColneEstuaryAJ440475cloneColneEstuaryAJ440489clone
pA12ColneEstuaryAJ440470clone
pA90pB46pC56
pA4pB76
pA29pA98
pA32pA50
pA25pB66
pB49pB4
pA94
0.01 changes
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69100
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51 54
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Distance from coast (km)
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167
Temperature (oC)
Salinity
O2 ( M )
NO2-( M )
NO3-(M )
N2O ( nM )
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)
B. B.Ward, Princeton
With A. Jayakumar, S. W. A. Naqvi and
C. A. Francis
CHE98-10248
In an international collaboration with Indian scientists, we are investigating the relationship between the composition of the denitrifying bacterial assemblage and the rates of denitrification in the Arabian Sea. These are the first nitrite reductase (nirS) sequences reported from the marine water column and they show close correlation between gene diversity and intensity of denitrification, as indicated by high nitrite concentrations in the bottom waters.
Distance phylogenetic tree showing relationships between nirS sequences obtained from the coastal Arabian Sea and sequences from cultured denitrifiers. Several novel groups are identified.