Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2012.04.007 |
Molecular discrimination of bacteria (organic versus mineral soil layers) of dry woodlands of Argentina | |
Noe, L.2; Ascher, J.1; Ceccherini, M. T.1; Abril, A.2; Pietramellara, G.1 | |
通讯作者 | Ascher, J. |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS
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ISSN | 0140-1963 |
EISSN | 1095-922X |
出版年 | 2012 |
卷号 | 85页码:18-26 |
英文摘要 | We performed screening of bacteria inhabiting soil organic (O) layers vs mineral (A) layers. Community level and group-specific genetic fingerprinting was used to assess changes in bacterial structures of dry woodlands of Argentina as function of regional climate, season and land use. Multiple factor effects and correlations of soil organic matter, microbial biomass and bacterial structures were found, indicating substrate, soil moisture and moderate temperature as favorable conditions. Fingerprinting data showed distinct soil bacteria inhabiting O vs A layers. At the community level, lower similarities were found in the O layer (28%) than in the A layer (47%); this phenomenon was not always reflected at the group level. providing more accurate insights into environmental change induced shifts in soil bacterial structures (i.e., higher similarities among actinomycetes and ammonium oxidizers inhabiting the 0 layer with respect to the A layer). Specific bacterial groups were more affected in O than A layers, in wet summer and under moderate regional climate (moisture effect). N-2 fixers were found to be the most sensitive community members (i.e., to grazing induced disturbances) and predominate in the 0 layer. Discrimination of soil bacteria provided evidences about the role of organic layer bacteria in overall organic matter dynamics. (C) 2012 Elsevier Ltd. All rights reserved. |
英文关键词 | Actinomycetes Ammonium oxidizers Arid soil N-2 fixers PCR-DGGE Soil organic matter |
类型 | Article |
语种 | 英语 |
国家 | Italy ; Argentina |
收录类别 | SCI-E |
WOS记录号 | WOS:000308054300002 |
WOS关键词 | MONTE DESERT ; COMMUNITY STRUCTURE ; LITTER QUALITY ; DIVERSITY ; DECOMPOSITION ; GRADIENT ; HETEROGENEITY ; POPULATIONS ; FERTILITY ; PATTERNS |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/173266 |
作者单位 | 1.Univ Florence, Dipartimento Sci Prod Vegetali Suolo & Ambiente A, I-50144 Florence, Italy; 2.Univ Nacl Cordoba, Fac Ciencias Agropecuarias, Dept Recursos Nat, RA-5000 Cordoba, Argentina |
推荐引用方式 GB/T 7714 | Noe, L.,Ascher, J.,Ceccherini, M. T.,et al. Molecular discrimination of bacteria (organic versus mineral soil layers) of dry woodlands of Argentina[J],2012,85:18-26. |
APA | Noe, L.,Ascher, J.,Ceccherini, M. T.,Abril, A.,&Pietramellara, G..(2012).Molecular discrimination of bacteria (organic versus mineral soil layers) of dry woodlands of Argentina.JOURNAL OF ARID ENVIRONMENTS,85,18-26. |
MLA | Noe, L.,et al."Molecular discrimination of bacteria (organic versus mineral soil layers) of dry woodlands of Argentina".JOURNAL OF ARID ENVIRONMENTS 85(2012):18-26. |
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