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- Title
Effect of Individual/Co-culture of Native Phyllosphere Organisms to Enhance <italic>Dracaena sanderiana</italic> for Benzene Phytoremediation.
- Authors
Jindachot, W.; Treesubsuntorn, C.; Thiravetyan, P.
- Abstract
Benzene-tolerant phyllosphere microorganisms isolated from <italic>Dracaena sanderiana</italic> were identified as <italic>Pantoea</italic> sp. B11 and <italic>Staphylococcus</italic> sp. B12<italic>.</italic> Inoculating <italic>D. sanderiana</italic> with these microorganisms growing under 70 and 348 mg/m3 of airborne benzene showed a higher benzene removal efficiency than <italic>D. sanderiana</italic> without inoculation. Under 348 mg/m3 of benzene, inoculating <italic>D. sanderiana</italic> with <italic>Staphylococcus</italic> sp. B12 can remove benzene higher than inoculating <italic>D. sanderiana</italic> with <italic>Pantoea</italic> sp. B11 and co-culture between <italic>Staphylococcus</italic> sp. B12 and <italic>Pantoea</italic> sp. B11. In addition, individual <italic>Staphylococcus</italic> sp. B12 had higher ability to bio-remediate benzene than individual <italic>Pantoea</italic> sp. B11 and co-culture. <italic>Staphylococcus</italic> sp. B12 can also produce high indole-3-acetic acid (IAA) and harbor 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase activity, which can protect plant from the stress. Photosystem II activity and chlorophyll content of <italic>D. sanderiana</italic> were decreased clearly under exposure with a 348 mg/m3 of benzene. Inoculating <italic>D. sanderiana</italic> with <italic>Staphylococcus</italic> sp. B12 had significantly higher photosystem II activity and chlorophyll content than inoculating <italic>D. sanderiana</italic> with <italic>Pantoea</italic> sp. B11 and co-cultures. In co-culture inoculation, <italic>Pantoea</italic> sp. B11 inhibited growth of <italic>Staphylococcus</italic> sp. B12, which can probably decrease benzene removal efficiency. Application of <italic>Staphylococcus</italic> sp. B12 can enhance benzene phytoremediation efficiency in <italic>D. sanderiana</italic> and protect plant from benzene stress.
- Subjects
AMINOCYCLOPROPANECARBOXYLATE synthase; PHYTOREMEDIATION; BENZENE; STAPHYLOCOCCUS; ADENOSINE deaminase
- Publication
Water, Air & Soil Pollution, 2018, Vol 229, Issue 3, p1
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1007/s11270-018-3735-z