Arid
Study of Microbial Distribution in the Arid Desert Terrain, Beishan Mountains Area, Gansu
Liu, Mei1; Chen, Xiaoming1,2; Zhang, E.1; Wang, Chao1; Ruan, Chen1; Xu, Yan1; Liu, Xiaoling1; Luo, Xuegang1,2
通讯作者Chen, Xiaoming
来源期刊JOURNAL OF PURE AND APPLIED MICROBIOLOGY
ISSN0973-7510
出版年2013
卷号7期号:4页码:3111-3119
英文摘要

In order to explore the microbial flora characteristics of rhizosphere soils in Gansu Beishan mountains area, rhizosphere soils alongside of typical plants were selected respectively from dense and sparse vegetation zones as materials. The quantity and distribution of three groups of microorganism were investigated by dilution method of plate counting. Additionally, 16S rDNA sequence analysis was used to identify the dominant bacteria. The results showed that microorganism quantity of arid soils in Beishan was similar to normal environment. Microbial number of non-rhizosphere soil in dense vegetation zone (49.2x10(5)CFU/g) was more than that in sparse vegetation zone (35.5x10(5)CFU/g). The total population of microorganism were bacteria> actinomycetes> fungi. Furthermore, both volume and range of microorganism were decreased with the increasing soil depth in the same area. The microbial number of dense vegetation zone exhibited that Salsola abrotanoides>Asterothamnus centrali-asiaticus> Nitraria sphaerocarpa> Ephedra przewalskii, while the microbial number of sparse vegetation zone exhibited that Salsola abuscula>Sympegma regelii. The change in the number might be related to the plant root exudates. In detail, Salsola abrotanoides and Asterothamnus centrali-asiaticus could promote the growth of fungi and improve the soil alkaline condition. Whereas, the root exudates of Salsola abuscula and Sympegma regelii respectively existed mainly at the depth of 20 similar to 50 cm and 10 similar to 20 cm, could inhibit the growth of soil microorganism. By the analysis of 16S rDNA sequences, eight dominant strains were respectively identified as Kocuria Polaris, Bacillus niacin, Arthrobacter crystallopoietes, Paenibacillus tarimensis, Nocardiopsis lucentensis, Arthrobacter agilis, Bacillus idriensis, and Promicromonospora kroppenstedtii.


英文关键词Beishan mountains Desert plants Microbial flora 16S rDNA sequence analysis
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000331428900080
WOS关键词SOIL ; POPULATION
WOS类目Biotechnology & Applied Microbiology ; Microbiology
WOS研究方向Biotechnology & Applied Microbiology ; Microbiology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/178635
作者单位1.Southwest Univ Sci & Technol, Sch Life Sci & Engn, Mianyang 621010, Sichuan, Peoples R China;
2.Southwest Univ Sci & Technol, Sch Natl Def Sci & Technol, Mianyang 621010, Sichuan, Peoples R China
推荐引用方式
GB/T 7714
Liu, Mei,Chen, Xiaoming,Zhang, E.,et al. Study of Microbial Distribution in the Arid Desert Terrain, Beishan Mountains Area, Gansu[J],2013,7(4):3111-3119.
APA Liu, Mei.,Chen, Xiaoming.,Zhang, E..,Wang, Chao.,Ruan, Chen.,...&Luo, Xuegang.(2013).Study of Microbial Distribution in the Arid Desert Terrain, Beishan Mountains Area, Gansu.JOURNAL OF PURE AND APPLIED MICROBIOLOGY,7(4),3111-3119.
MLA Liu, Mei,et al."Study of Microbial Distribution in the Arid Desert Terrain, Beishan Mountains Area, Gansu".JOURNAL OF PURE AND APPLIED MICROBIOLOGY 7.4(2013):3111-3119.
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