CHAR ACTERIZA T ION OF THR EE BENZO A TE DEG RADINGANOX YGENIC PH OTOSYNTHETIC BA CTERI A ISO LA TED F RO M THE ENVIRONMENT

Biotropia: The Southeast Asian Journal of Tropical Biology

关键词: anoxyg en ic pho tosynt hetic b a cter ia/ b e nz oate de grad ation/ 16 S rRNA g e ne.;   

DOI  :  

来源: DOAJ

【 摘 要 】

Threeanoxygenic photosyn thetic bacter ia,DS-1,DS-4 and Cas-13, have been exam in atedfortheir morphological and physiolog icalpropert ies. All s trains were rod-sh ape ce lls witha swollenterminalend,Gram nega tive , motile, non-hal ophilic, non-alkal ophilic a n d non- acid ophilic ,a nd capable of utilizing benzoate aerobicallyand photo-anaerobically. Sequ ence analysis of part of 16S rRNA genes showedthat DS-1 and Cas- 13 we re cl osel y relate dtoRhodopseudomonas palustrisStra in7 w ith a simila ri tyof97%, where a s DS-4 ma y not be c losel yrela te dt o theformer t wo str ai ns wit h a si milarit y of 78% based ont he constr ucte d phyloge nictree . Sp ec tralanal ys isind ica te d thatthe thr eeba cter ia ha dba cter io ch lorophylaand norm al sp ir il loxa nthi n ser ies. Growth inmed iumenrichedwith vitaminand supplemen tedwith ben zoa teastheir s oleC-s ources wa s bette r t hanin me di umwitho utvita min.Benz oatedeg ra dati onin me di u m withvita minwas ac ce lerated. The ab ilityto grow on benzoate withou t addedvitam insind icated thatthe bacteria were ableto s ynthesize th eir own vitamins.

【 授权许可】

Unknown