Hoeft, S E

7 items:

Dissimilatory arsenate reduction with sulfide as electron donor: Experiments with Mono Lake water and isolation of strain MLMS-1, a chemoautotrophic arsenate respirer. Categories: Publication; Types: Citation
Dissimilatory Arsenate and Sulfate Reduction in Sediments of Two Hypersaline, Arsenic-Rich Soda Lakes: Mono and Searles Lakes, California A radioisotope method was devised to study bacterial respiratory reduction of arsenate in sediments. The following two arsenic-rich soda lakes in California were chosen for comparison on the basis of their different salinities: Mono Lake (∼90 g/liter) and Searles Lake (∼340 g/liter). Profiles of arsenate reduction and sulfate reduction were constructed for both lakes. Reduction of [73As]arsenate occurred at all depth intervals in the cores from Mono Lake (rate constant [k] = 0.103 to 0.04 h−1) and Searles Lake (k = 0.012 to 0.002 h−1), and the highest activities occurred in the top sections of each core. In contrast, [35S]sulfate reduction was measurable in Mono Lake (k = 7.6 ×104 to 3.2 × 10−6 h−1) but not in Searles... Categories: Publication; Types: Citation
Correction - Coupled arsenotrophy in a hot spring photosynthetic biofilm at Mono Lake, California Hoeft, S.E., Kulp, T.R., Han, S., Lanoil, B., and Oremland, R.S., 2011, Correction - Coupled arsenotrophy in a hot spring photosynthetic biofilm at Mono Lake, California: Applied and Environmental Microbiology, v. 77, no. 15) , p. 5570. Categories: Publication; Types: Citation
Response to Comment on "Arsenic(III) Fuels Anoxygenic Photosynthesis in Hot Spring Biofilms from Mono Lake, California" Schoepp-Cothenet et al. bring a welcome conceptual debate to the question of which came first in the course of planetary biological evolution, arsenite [As(III)] oxidation or dissimilatory arsenate [As(V)] reduction. However, we disagree with their reasoning and stand by our original conclusion. Categories: Publication; Types: Citation
Redox transformations of arsenic oxyanions in periphyton communities. Categories: Publication; Types: Citation

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