干旱区生态环境知识资源中心(Arid): Search of environmental descriptors to explain the variability of the bacterial diversity from maize rhizospheres across a regional scale

Arid

DOI	10.1016/j.ejsobi.2009.07.006
	Search of environmental descriptors to explain the variability of the bacterial diversity from maize rhizospheres across a regional scale
	Castellanos, Thelma 2; Dohrmann, Anja B.1; Imfeld, Gwenael 3; Baumgarte, Susanne 1; Tebbe, Christoph C.1
通讯作者	Tebbe, Christoph C.
来源期刊	EUROPEAN JOURNAL OF SOIL BIOLOGY
ISSN	1164-5563
EISSN	1778-3615
出版年	2009
卷号	45 期号:5-6 页码:383-393
英文摘要	The regional scale variability of the bacterial community inhabiting the rhizosphere was studied with soil collected from maize fields located in the Santo Domingo Valley (SDV; Baja California Sur, Mexico), a semi-arid agricultural ecosystem of approximately 200 km(2). The bacterial community structure was visualized by single-strand conformation polymorphism (SSCP) profiles of PCR-amplified partial 16S rRNA genes of directly extracted rhizosphere soil DNA. SSCP profiles of different SDV sites and an external field site in Germany were evaluated for their similarities and the contributing bacteria were characterized by DNA sequence analyses. SSCP profiles from each site were significantly different from the others, as revealed by permutation of pairwise similarities (P < 0.05). In comparison to the German site, SSCP profiles from SDV were more similar to each other despite contrasting soil salinity levels. Correspondence analysis revealed that among SDV sites, salinity levels, soil organic carbon and calcium (Ca2+) were most influential on the bacterial community structure. Depending on the phylogenetic group analyzed (Bacteria, Alphaproteobacteria, Pseudomonas), the importance of these soil variables varied. Interestingly, the East-West direction also revealed an effect, suggesting that future explorations of bacterial diversity patterns Should also consider landscape topography in search of explaining patterns of bacterial diversity in soils. (C) 2009 Elsevier Masson SAS. All rights reserved
英文关键词	Bacterial diversity Environmental descriptors Regional scale Maize Rhizosphere Salinity
类型	Article
语种	英语
国家	Germany ; Mexico
收录类别	SCI-E
WOS记录号	WOS:000272186900001
WOS关键词	RIBOSOMAL-RNA GENES ; SPATIAL HETEROGENEITY ; COMMUNITY STRUCTURE ; CONFORMATION POLYMORPHISM ; SOIL ; PCR ; DNA ; PLANTS ; ROOTS ; FIELD
WOS类目	Ecology ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/160599
作者单位	1.Johann Heinrich von Thunen Inst, Inst Biodiversitat, D-38116 Braunschweig, Germany; 2.Ctr Invest Biol Noroeste CIBNOR, La Paz 23097, BCS, Mexico; 3.UFZ Helmholtz Ctr Environm Res, Dept Isotope Biogeochem, Leipzig, Germany
推荐引用方式 GB/T 7714	Castellanos, Thelma,Dohrmann, Anja B.,Imfeld, Gwenael,et al. Search of environmental descriptors to explain the variability of the bacterial diversity from maize rhizospheres across a regional scale[J],2009,45(5-6):383-393.
APA	Castellanos, Thelma,Dohrmann, Anja B.,Imfeld, Gwenael,Baumgarte, Susanne,&Tebbe, Christoph C..(2009).Search of environmental descriptors to explain the variability of the bacterial diversity from maize rhizospheres across a regional scale.EUROPEAN JOURNAL OF SOIL BIOLOGY,45(5-6),383-393.
MLA	Castellanos, Thelma,et al."Search of environmental descriptors to explain the variability of the bacterial diversity from maize rhizospheres across a regional scale".EUROPEAN JOURNAL OF SOIL BIOLOGY 45.5-6(2009):383-393.