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Paracoccus denitrificans Paracoccus pantotrophus Roseobacter denitrificans ColneEstuaryAJ440472clone ColneEstuaryAJ440474clone G840-2C G840-1C G857-5C G857-6H G857-7A G840-2D G840-4B G857-7H G857-10A G840-10C G840-2E G857-5G G840-9H G857-2F G840-9D G857-2C G857-4C V483-10G G840-2F G857- 11A V483-10E G840-9B G857-5B G840-4A G840-2H G840-1G G840-4C V483-1FF G840-5F G857-1H V483-6B V483-2CC G840-1B V483-6EE V483-1GG ColneEstuaryAJ440492clone Ralstoniaeutropha ColneEstuaryAJ440488clone ColneEstuaryAJ440483clone ColneEstuaryAJ440476clone V483-4AA G857-4A G857-7D G857-9E V483-7C V483-11A V483-11E G840-9C G840-5A G840-2A ColneEstuaryAJ440487clone ColneEstuaryAJ440482clone ColneEstuaryAJ440484clone ColneEstuaryAJ440481clone ColneEstuaryAJ440490clone ColneEstuaryAJ440479clone AzoarcusevansiiKB740T Azoarcustoluvorans Td21T Pseudomonas stut zeriJM300 Pseudomonas stutzeri Thauera terpenica58EuT ColneEstuaryAJ440491clone ColneEstuaryAJ440485clone Thauera selenat isAXT Thauera aromatica K172T Acidovorax sp 2FB7 Thauera chlorobenzoica 3CB1 G857-4F ColneEstuaryAJ440473clone ColneEstuaryAJ440471clone V483-1G V483-9E V483-5F V483-3GG Pseudomonas fluorescens ColneEstuaryAJ440494isolate V400-4H V400-1D V400-2D V400-1F V400-3D V400-3E V400-4C V400-5D V400-6C V400-1H V400-3B V400-5H V400-2B V400-4B V400-5B V400-2H V400-3H V483-7F V483-9C V400-5F Pseudomonas aeruginosa V400-4G V400-2G G840-4F ColneEstuaryAJ440480clone FullB9-12 FullC10-1 V400-3A V483-3B V400-4A V400-2E V483-5GG ColneEstuaryAJ440486clone Azoarcustolulyticus 2FB6 ColneEstuaryAJ440478clone ColneEstuaryAJ440469clone pA5 wF16 wA15 G840-4E ColneEstuaryAJ440477clone V483-7G V483-6E V483-10B V483-8H G840-6C V483-3EE G840-6F G857-7B G857-2E G857-4E G857-1A pB20 V483-4E V483-5CC V483-6BB V483-11G G840-6A G857-9B G840-9G G857-1D V483-6FF G857-9G V483-4B G840-6B G857-1F ColneEstuaryAJ440475clone ColneEstuaryAJ440489clone pA12 ColneEstuaryAJ440470clone pA90 pB46 pC56 pA4 pB76 pA29 pA98 pA32 pA50 pA25 pB66 pB49 pB4 pA94 0.01 changes 100 59 96 61 100 100 100 94 100 91 100 62 69 100 80 100 100 100 100 99 100 100 100 100 100 100 100 100 51 54 100 98 50 70 83 100 51 81 99 77 100 100 100 88 96 82 100 100 99 58 59 99 100 93 74 73 87 100 100 85 98 92 99 100 100 59 100 100 96 73 100 100 100 92 100 70 100 100 100 G840-1F I I II I I I IV V VI VII VIII IX X 100 50 100 50 100 50 100 80 60 40 20 D istance from coast(km ) 100 50 D e p t h ( m ) 100 50 100 50 167 Tem perature ( o C) Salinity O 2 ( M ) NO 2 - ( M ) NO 3 - ( M ) N 2 O (nM ) Depth (m) 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 Distance phylogenet ic tree showing relationsh ips between nirS sequences obtained from the coastal Arabian Sea and sequences from cultured denitrifie rs. Several

description

B. B.Ward, Princeton With A. Jayakumar, S. W. A. Naqvi and C. A. Francis CHE98-10248. Depth (m). I. II. III. IV. V. VI. - PowerPoint PPT Presentation

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

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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.