Isolation and identification of Cr-resistant bacteria from the rhizosphere of Tagetes sp. and their ability to reduce Cr(VI)

Abstract. Meitiniarti VI, Putri EK, Runtu AE, Nugroho RA, Kasmiyati S. 2022. Isolation and identification of Cr-resistant bacteria from the rhizosphere Tagetes sp. their ability to reduce Cr(VI). Biodiversitas 23: 4118-4124. Bioremediation involving interaction plants with microorganisms is a technique for improving environment polluted chromium hexavalent [Cr(VI)]. Marigolds (Tagetes sp.) are known be hyperaccumulator plant Cr(VI) there microbes in its that enable tolerant heavy metals. The aims this study were isolate identify indigenous rhizobacteria resistant test these bacterial isolates Three obtained study, namely Micrococcus luteus RT-9, Stenotrophomonas maltophilia RT-12, Brevundimonas RT-23. M. RT-9 RT-12 which 100 mg L-1 mixture tested liquid medium. Microbacterium SpR3 by previous was used as reference. results showed had higher (2.2 h-1) than (0.9 h-1). similar SpR3. mixed inoculation did not show difference reduction Cr (VI) compared pure cultures.