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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >ATP levels and adenylate energy charge in soils of mangroves in the Andamans.
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ATP levels and adenylate energy charge in soils of mangroves in the Andamans.

机译：安达曼人红树林土壤中的ATP水平和腺苷酸能电荷。

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Adenosine 5'-triphosphate (ATP) is considered to be a useful indicator of life in soil and the adenylate energy charge (AEC) indicates the energetic status of soil microorganisms. ATP concentration and AEC levels have been extensively studied in a diverse group of soils. However, little knowledge is available on the levels of ATP and AEC in soils of mangroves. We report here the levels of (adenylates ATP, adenosine di-phosphate (ADP) and adenosine monophosphate (AMP)) and AEC in soils of undisturbed mangroves of South-, Middle-, North- and Little-Andamans. Relevant soil physico-chemical and microbial parameters and their relationship to ATP and AEC were also examined. Averaged across various mangrove sites, total N level was 1.44+or-0.13 g kg-1, organic C 15.6+or-1.5 g kg-1, microbial biomass C 410+or-35 micro g kg-1, microbial biomass N 34+or-2 micro g kg-1 and qCO2 41.1+or-4.4 mg CO2 (g biomass C)-1 d-1. Among the adenylates, ATP ranged from 2.32 to 3.22 nmol g-1 (mean 2.87+or-0.29), AMP from 0.21 to 0.29 nmol g-1 (mean 0.25+or-0.03) and ADP from 0.41 to 0.48 nmol g-1 (mean 0.44+or-0.03). Across sites, the average microbial biomass C/organic C ratio was 2.6+or-0.2% and microbial biomass C/N ratio at the mangrove sites was wider and ranged from 11.2 to 14.5 with a mean of 12.0+or-0.9. The ATP/microbial biomass C ratio ranged from 6.0 to 8.2 micro mol g-1 with a mean of 7.0+or-0.6 micro mol g-1, markedly lower than the worldwide average of 10-12 micro mol g-1 reported in a wide range of soils. Lower ATP/microbial biomass C ratio in our mangrove soils is most likely due to a changed microbial community structure indicating a decomposition pathway dominated by fungi and microorganisms with large microbial biomass C/N ratio. The AEC levels were consistently >8.0 (mean 0.87) at all the sites, suggesting that the majority of microorganisms in these mangrove soils are probably dormant..
机译：5'-三磷酸腺苷（ATP）被认为是土壤中生命的有用指示剂，腺苷酸能电荷（AEC）指示土壤微生物的能量状态。 ATP浓度和AEC水平已在多种土壤中进行了广泛研究。但是，关于红树林土壤中ATP和AEC含量的知识很少。我们在此报告南，中，北和小安达曼群岛未受干扰的红树林土壤中的（腺苷酸ATP，二磷酸腺苷（ADP）和单磷酸腺苷（AMP））和AEC的水平。还检查了相关的土壤理化和微生物参数及其与ATP和AEC的关系。在各个红树林地点取平均值，总氮水平为1.44+或-0.13 g kg-1，有机碳15.6+或-1.5 g kg-1，微生物生物量C 410+或-35 micro g kg-1，微生物量N 34 +或-2微克kg-1和qCO2 41.1 +或-4.4毫克CO2（克生物质C）-1 d-1。在腺苷酸中，ATP的范围为2.32至3.22 nmol g-1（平均值2.87+或-0.29），AMP的范围为0.21至0.29 nmol g-1（平均值为0.25+或-0.03）和ADP的范围为0.41至0.48 nmol g-1 （平均值为0.44+或-0.03）。跨地点，红树林地点的平均微生物生物量碳/有机碳比为2.6+或-0.2％，红树林地点的微生物生物量碳/氮比更宽，范围为11.2至14.5，平均值为12.0+或-0.9。 ATP /微生物生物质C的比值范围为6.0至8.2 micro mol g-1，平均值为7.0+或-0.6 micro mol g-1，显着低于全球平均水平的10-12 micro mol g-1。广泛的土壤。在我们的红树林土壤中，较低的ATP /微生物生物量碳比很可能是由于微生物群落结构的变化，表明分解途径主要由真菌和微生物生物量碳/氮比大的微生物主导。在所有地点，AEC水平始终> 8.0（平均0.87），表明这些红树林土壤中的大多数微生物可能处于休眠状态。

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