Topic
Enterobacter taylorae
About: Enterobacter taylorae is a research topic. Over the lifetime, 25 publications have been published within this topic receiving 822 citations.
Papers
TL;DR: Results suggest that providing L-TRP with selected auxin-producing DRB to increase phytotoxic activity against emerging weed seedlings may be a practical biological control strategy.
Abstract: Plant-growth-suppressive activity of deleterious rhizobacteria (DRB) may be due to production of metabolites absorbed through roots. Auxins produced in high concentrations in the rhizosphere by DRB contribute to reduced root growth. Selected DRB able to produce excessive amounts of auxin compounds for suppression of weed seedling growth may be effective for biological control of weeds. The objectives to this study were to assess the ability of DRB originating from weed seedlings to synthesize auxins from L-tryptophan (L-TRP), determine effects of DRB with or without L-TRP on seedling root growth, and characterize auxins produced from L-TRP using high performance liquid chromatography (HPLC). Auxins expressed as indole-3-acetic acid (IAA)-equivalents were produced by 22.8% of the DRB tested based on a colorimetric method. Under laboratory conditions, a DRB isolate classified as Enterobacter taylorae with high auxin-producing potential (72 mg L−1 IAA-equivalents) inhibited root growth of field bindweed (Convolvulus arvensis L.) by 90.5% when combined with 10−5M L-TRP compared with non-treated control. Auxin derivatives produced by E. taylorae from L-TRP in broth culture after 24 h incubation identified by HPLC included IAA (102 μg L−1), indole-3-aldehyde (IALD; 0.4 μg L−1), and indole-3-lactic acid (ILA; 7.6 μg L−1). Results suggest that providing L-TRP with selected auxin-producing DRB to increase phytotoxic activity against emerging weed seedlings may be a practical biological control strategy.
161 citations
TL;DR: This study indicates that using organic coatings attached with Se(VI) reducers in a biotreatment system may be a potentially feasible method to remove Se from Se-contaminated water in field.
42 citations
TL;DR: This study suggests that E. taylorae may be used to treat Se(VI)-contaminated drainage water in the field by reducing Se( VI) to Se(0) in the San Joaquin Valley drainage water.
Abstract: Microbial reduction of selenate [Se(VI)] to elemental selenium [Se(0)] is a useful technique for removing Se from agricultural drainage water. A series of batch experiments were conducted in the laboratory to determine the effects of yeast extract (50−1000 mg/L), salinity (EC, 5−75 dS/m), and NO3- (5−100 mg/L) on the removal of Se(VI) (2000 μg/L) from drainage water by Enterobacter taylorae. Results showed that relatively high amounts of yeast extract (500 mg/L) were needed for E. taylorae to effectively reduce Se(VI) to Se(0). During a 7-day experiment, ∼95% of added Se(VI) was reduced to Se(0) in the low-salinity drainage water (5 dS/m) with NO3- values of 5−50 mg/L. In the high-salinity drainage water (50−75 dS/m), reduction of Se(VI) to Se(0) was limited. E. taylorae was also capable of reducing Se(VI) to Se(0) in the San Joaquin Valley drainage water, with a reduction of the added Se(VI) to Se(0) (73.8%) and Se(-II) (20%). This study suggests that E. taylorae may be used to treat Se(VI)-contaminated ...
34 citations
TL;DR: The results indicate that E cancerogenus can cause wound infections and septicemia in persons environmentally exposed to these organisms during traumatic events.
Abstract: Five cases of Enterobacter cancerogenus infections (wound, n = 4; bacteremia, n = 1) in adults are described. All infections seemed to be community acquired and occurred after precipitating events such as multiple trauma to the head or severe crush injuries. All five strains of E cancerogenus were recovered in pure culture, and three of these were isolated on multiple occasions. The results indicate that E cancerogenus can cause wound infections and septicemia in persons environmentally exposed to these organisms during traumatic events.
30 citations
TL;DR: This study suggests that E. taylorae may be used to remediate high-salt Se(VI)-contaminated agricultural drainage water.
Abstract: Rice straw has been successfully tested as an effective organic source and a carrier of selenate [Se(VI)]-reducing bacteria to remove Se(VI) from agricultural drainage water. In this study, an Se(VI)-reducing bacterium identified as Enterobacter taylorae was isolated from rice straw and used to remove Se(VI) from a 0.5% tryptic soy broth (TSB) and high-salt (15.5 dS m(-)(1)) synthetic agricultural drainage water containing Se(VI) in a range of 500-5000 microg/L. Results showed that E. taylorae reduced 81-94% of the added Se(VI) to elemental Se [Se(0)] in the 0.5% TSB solution during a 5-day experiment. In the high-salt drainage water, Se(VI) reduction was rapid during a 9-day experiment. On the final day of the experiment, Se(0) [75%] and Se(-II) [19%] were the major forms of Se in the drainage water with small amounts of Se(VI), Se(IV), and volatile Se released. The pathway of Se(VI) reduction in the drainage water followed the order Se(VI) --> selenite [Se(IV)] --> Se(0) --> selenide [Se(-II)]. This study suggests that E. taylorae may be used to remediate high-salt Se(VI)-contaminated agricultural drainage water.
30 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2014 | 1 |
| 2008 | 2 |
| 2007 | 1 |
| 2005 | 1 |
| 2003 | 2 |
| 2000 | 1 |