Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/jobm.201400355 |
Feasibility of EPS-producing bacterial inoculation to speed up the sand aggregation in the Gurbantunggut Desert, Northwestern China | |
Wu, Nan1; Pan, Hui-Xia1; Qiu, Dong2; Zhang, Yuan-Ming1![]() | |
通讯作者 | Zhang, Yuan-Ming |
来源期刊 | JOURNAL OF BASIC MICROBIOLOGY
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ISSN | 0233-111X |
EISSN | 1521-4028 |
出版年 | 2014 |
卷号 | 54期号:12页码:1378-1386 |
英文摘要 | Exopolymers are known to be useful in improving sand aggregation and the development of biological soil crusts (BSCs). A facultative bacterium KLBB0001 was isolated from BSCs in the Gurbantunggut Desert in northwestern China. With the strong effective production of extracellular polymeric substances (EPS), this strain exhibits a multifunctional role for sand stabilization and maintenance of water under laboratory conditions. Practical testing of the feasibility of its inoculation to speed up BSC recovery in the field was also conducted in this experiment. This strain stimulated the heterotrophic community assembly in the topsoil layer (0-2cm) before the commencement of autotrophic cyanobacteria, while also significantly increasing the number of bacteria, actinomycetes, and content of total phosphorus, available nitrogen, and available phosphorus. However, the low nitrogenase activity (NA) (0.57 mu mol/h) that was observed caused us to doubt the previous identification as Azotobacter Beijerinck that was based on physiological and biochemical properties. A phylogenetic analysis based on 16S rRNA gene sequences revealed that this strain was a member of the genus Paenibacillus. It exhibited the closest phylogenetic affinity and highest sequence similarity to the strain Paenibacillus mucilaginosus VKPM B-7519 (sequence similarity 99.698%), which is well known as a typical silicate-weathering bacteria that releases lots of nutritional ions from minerals and the soil. Because P. mucilaginosus can excrete carbonic anhydrase (CA) to capture atmospheric CO2 through hydration of CO2, it is possible that KLBB0001 might use a similar strategy for heterotrophs in the BSCs to sequester CO2 from the air. Because of its potential role in the reestablishment of the BSC ecosystem due to its ability to improve water relations, sand stabilization, and chemical erosion, EPS-producing bacterial inoculation was concluded to be a suitable and effective treatment for BSC recovery, especially in environments with limited water and nutrients. |
英文关键词 | Extracellular polymeric substances Paenibacillus mucilaginosus Acetylene reduction assay 16S rRNA gene sequence Biological soil crusts |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000346260300011 |
WOS关键词 | BIOLOGICAL SOIL CRUSTS ; SP-NOV. ; BACILLUS-MUCILAGINOSUS ; EXTRACELLULAR POLYSACCHARIDES ; SPATIAL-DISTRIBUTION ; SUCCESSIONAL STAGES ; NITROGEN-FIXATION ; COLORADO PLATEAU ; RHIZOSPHERE ; DIVERSITY |
WOS类目 | Microbiology |
WOS研究方向 | Microbiology |
来源机构 | 中国科学院新疆生态与地理研究所 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/183123 |
作者单位 | 1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Key Lab Biogeog & Bioresources Arid Land, Urumqi 830011, Peoples R China; 2.Xinjiang Agr Univ, Urumqi, Peoples R China |
推荐引用方式 GB/T 7714 | Wu, Nan,Pan, Hui-Xia,Qiu, Dong,et al. Feasibility of EPS-producing bacterial inoculation to speed up the sand aggregation in the Gurbantunggut Desert, Northwestern China[J]. 中国科学院新疆生态与地理研究所,2014,54(12):1378-1386. |
APA | Wu, Nan,Pan, Hui-Xia,Qiu, Dong,&Zhang, Yuan-Ming.(2014).Feasibility of EPS-producing bacterial inoculation to speed up the sand aggregation in the Gurbantunggut Desert, Northwestern China.JOURNAL OF BASIC MICROBIOLOGY,54(12),1378-1386. |
MLA | Wu, Nan,et al."Feasibility of EPS-producing bacterial inoculation to speed up the sand aggregation in the Gurbantunggut Desert, Northwestern China".JOURNAL OF BASIC MICROBIOLOGY 54.12(2014):1378-1386. |
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