Arid
DOI10.1016/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
ISSN0140-1963
EISSN1095-922X
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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