Department of Geosciences, Faculty of Science, Shizuoka University, 836 Oya, Suruga-ku, Shizuoka 422–8529, Japan.
Microbes Environ. 2010;25(2):140-3. doi: 10.1264/jsme2.me09181.
Sulfur-turf microbial mats develop in sulfide-containing hot spring water dominated by chemolithoautotrophic sulfur-oxidizing bacteria. The sulfur-turf mat that developed at a source of hot water (72°C, pH 6.8) exhibited a growth rate of 0.48±0.04 h(-1) and biomass production of 4.6±1.0 mg of C h(-1). On a per-cell basis, this biomass production was at least an order of magnitude higher than the CO(2) uptake rate calculated for a photosynthetic mat dominated by thermophilic Synechococcus spp. at 70°C. The sulfur-turf-associated microbial community likely contributes to carbon fixation and primary production in this geothermal habitat.
硫磺地衣微生物垫在富含硫化物的温泉水中发育，这些温泉水主要由化能自养硫氧化细菌主导。在热水源（72°C，pH6.8）处发育的硫磺地衣垫的生长速率为 0.48±0.04 h(-1)，生物量产量为 4.6±1.0 mg 的 C h(-1)。按细胞计算，这种生物量的产生至少比在 70°C 时以嗜热蓝细菌为主的光合地衣垫计算出的 CO(2)吸收速率高出一个数量级。硫磺地衣相关的微生物群落可能有助于该地热生境中的碳固定和初级生产。
