Abstract An excessive concentration of selenium has been documented in several parts of Punjab in India. The present research has been conceptualized to determine selenium's spatial distribution in the foot-hill region of Shiwaliks. Nine seasonal rivulets (Choes) originating from Shiwalik hills were selected with the range of altitude between 566 and 1996 meters above mean sea level. The aerial distance between first (SB-1) and ninth (SB-9) rivulets was calculated slightly more than 16 km. These tributaries merge with the drainage basins of the south-west flowing rivers of Punjab, Haryana, Himachal Pradesh, and Rajasthan. Nine samples of sediments were collected from these Choes and analyzed for various physicochemical characteristics and selenium to establish their synergetic and antagonistic relationship with selenium mobility. Maximum selenium concentration (2.918 µg/g) has been spotted in the sediment sample (SB-2), while minimum concentration (0.003 µg/g) was spotted in an SB-9 sediment sample. The alkaline nature (pH 7.7–8.5) of the sediments leads to enhance the mobility of the heavy metals significantly. Fourteen selenium tolerant bacterial strains were segregated from these sediment samples and were categorized based on their ability to grow differentially on selenium oxyanions. Further, six bacterial strains were characterized and identified as Bacillus sp. using the 16S rRNA gene sequence.

中文翻译：

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Shiwalik 山麓硒的空间模式和耐硒芽孢杆菌菌株的分析

摘要 在印度旁遮普邦的几个地方已经记录了过量的硒。目前的研究已被概念化，以确定硒在 Shiwaliks 山麓地区的空间分布。选择了 9 条源自 Shiwalik 山的季节性河流 (Choes)，海拔范围在平均海平面以上 566 至 1996 米之间。第一条 (SB-1) 和第九条 (SB-9) 小溪之间的空中距离计算略大于 16 公里。这些支流与旁遮普、哈里亚纳邦、喜马偕尔邦和拉贾斯坦邦西南流动河流的流域汇合。从这些 Choes 收集了九个沉积物样品，并分析了各种理化特性和硒，以确定它们与硒迁移率的协同和拮抗关系。在沉积物样品 (SB-2) 中发现最大硒浓度 (2.918 µg/g)，而在 SB-9 沉积物样品中发现最小浓度 (0.003 µg/g)。沉积物的碱性（pH 7.7-8.5）显着增强了重金属的流动性。从这些沉积物样品中分离出 14 种耐硒细菌菌株，并根据它们在硒氧阴离子上差异生长的能力进行分类。此外，六种细菌菌株被表征并鉴定为芽孢杆菌属。使用 16S rRNA 基因序列。从这些沉积物样品中分离出 14 种耐硒细菌菌株，并根据它们在硒氧阴离子上差异生长的能力进行分类。此外，六种细菌菌株被表征并鉴定为芽孢杆菌属。使用 16S rRNA 基因序列。从这些沉积物样品中分离出 14 种耐硒细菌菌株，并根据它们在硒氧阴离子上差异生长的能力进行分类。此外，六种细菌菌株被表征并鉴定为芽孢杆菌属。使用 16S rRNA 基因序列。