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Résultats - Chapitre 1<br />

Tableau 2 : Diversité bactérienne <strong>de</strong> l’échantillon <strong>de</strong> cheminée : distribution et affiliation<br />

phylogénétique <strong>de</strong>s 96 séquences d’ADNr 16S obtenues par clonage. (SHOP = Source<br />

Hydrothermale Océanique Profon<strong>de</strong>, MAR = Mid Atlantic Ridge, EPR = East Pacific Rise)<br />

Affiliation<br />

phylogénétique<br />

Séquence<br />

type<br />

Nombre <strong>de</strong><br />

clones a Représentant(s) le(s) plus proche(s) I<strong>de</strong>ntité<br />

(%) b<br />

ε Proteobacteria EBB98 22 Clone AT-pp6 (AY225613), microcolonisateur,<br />

Lucky Strike, MAR<br />

Clone VC2.1 Bac32 (AF068806), Vent-Cap,<br />

98<br />

97<br />

Snake Pit, MAR<br />

EBB62 1 Sulfurimonas autotrophica (AB088431) 98<br />

EBB108 1 Sulfurimonas autotrophica (AB088431) 97<br />

EBB45 1 Clone AT-pp6 (AY225613), microcolonisateur,<br />

97<br />

Lucky Strike, MAR<br />

EBB10 10 Clone VC1.2-cl26 (AF367490) Vent-Cap, 99<br />

Snake Pit, MAR<br />

EBB109 1 Clone VC1.2-cl51 (AF367496) Vent-Cap,<br />

Snake Pit, MAR<br />

isolat T4-KAC-str1 (AJ575810) colonisateur,<br />

98<br />

97<br />

EPR 13°N<br />

EBB25 1 Endosymbionte <strong>de</strong> Rimicaris exoculata,<br />

98<br />

Rainbow, MAR (AJ515716)<br />

EBB70 1 Symbionte <strong>de</strong> gastropo<strong>de</strong>, océan Indien, 96<br />

clone SF_C23-F4 (AY531582)<br />

EBB26 1 Sulfurospirillum carboxydovorans (AY740528) 97<br />

EBB27 1 Sulfurospirillum arcachonense (Y11561) 98<br />

EBB34 1 Clone 3 (AY766315), Vent-Cap, Snake Pit, 98<br />

MAR<br />

δ Proteobacteria EBB47 3 Pelobacter acidigallici (X77216) isolat<br />

96<br />

MaGa12-T (DSM 2377-T)<br />

EBB28 1 Desulfovibrio hydrothermalis (AF458778) 97<br />

EBB100 17 Desulfovibrio hydrothermalis (AF458778) 97<br />

EBB30 3 Y18049 Desulfovibrio zosterae 92<br />

EBB129 1 Clone IndB2-42 (AB100004), Cheminée<br />

96<br />

inactive, Kairei field, océan Indien<br />

EBB72 1 Desulfovibrio hydrothermalis (AF458778) 95<br />

EBB17 1 Desulfovibrio sp. HS2 (AY274444) 96<br />

EBB76 1 Desulfovibrio aespoeensis (X95230) 92<br />

EBB7 2 Desulfobacterium phenolicum (AJ237606) 94<br />

EBB93 3 Desulfobacterium phenolicum (AJ237606) 93<br />

EBB48 1 Desulfobacterium sp. LSv25 (AF099056) 91<br />

EBB2 3 Desulfocapsa sulfoexigens (Y13672) 96<br />

EBB74 1 Clone IndB2-42 (AB100004), Cheminée<br />

97<br />

inactive, fosse d’Okinawa, océan Indien<br />

γ Proteobacteria EBB71 1 Psychromonas profunda (AJ416756) 98<br />

EBB50 2 Psychromonas antarcticus (Y14697) 98<br />

Cytophaga EBB44 1 Clone SF_C9-B4 (AY531558), Océan Indien, 94<br />

SHOP, gastéropo<strong>de</strong>s<br />

EBB32 5 Clone CS_B045 (AF419687), Guaymas,<br />

95<br />

sédiments<br />

Verrucomicrobia EBB128 1 Clone P. palm A 24, Paralvinella palmiformis, 96<br />

Juan <strong>de</strong> Fuca, EPR 13°N (AJ441246)<br />

Non classé EBB110 7 Clone P. palm C70, Paralvinella palmiformis,<br />

Juan <strong>de</strong> Fuca, EPR 13°N (AJ441232)<br />

Caldithrix abyssi (AJ430587)<br />

89<br />

84<br />

a > 97% <strong>de</strong> similarité entre les séquences d’un même groupe, sur 700 pb approximativement.<br />

b Résultats <strong>de</strong> BLAST.<br />

136

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