Arid
DOI10.1007/s00374-014-0935-6
Bacterial community structure and detection of putative plant growth-promoting rhizobacteria associated with plants grown in Chilean agro-ecosystems and undisturbed ecosystems
Jorquera, Milko A.1; Inostroza, Nitza G.1; Lagos, Lorena M.2; Barra, Patricio J.2; Marileo, Luis G.2; Rilling, Joaquin I.2; Campos, Daniela C.1; Crowley, David E.3; Richardson, Alan E.4; Mora, Maria L.1
通讯作者Jorquera, Milko A.
来源期刊BIOLOGY AND FERTILITY OF SOILS
ISSN0178-2762
EISSN1432-0789
出版年2014
卷号50期号:7页码:1141-1153
英文摘要

Soil microorganisms with phytase- and 1-aminocyclopropane-1-carboxylate (ACC) deaminase activities are widely studied as plant growth-promoting rhizobacteria (PGPR). Here, we explored the bacterial community structure and occurrence of putative PGPR in plants grown in agro-ecosystems and undisturbed ecosystems from northern, central, and southern Chile. Total rhizobacterial community structure was evaluated by denaturing gradient gel electrophoresis, and dominant bands present in diverse ecosystems were sequenced. Significant differences in total bacterial communities were shown with some bacterial orders (Enterobacteriales, Actinomycetales, and Rhizobiales) being highly similar to both ecosystems. Twenty-nine putative PGPR, showing phytate- and ACC-degrading activities and production of auxin, were selected from across the sites. Based on 16S rRNA gene sequencing, the putative PGPR were characterized as Enterobacteriales (Enterobacter, Serratia, Pantoea, Rahnella, Leclercia), Pseudomonas, and Bacillus, consistent with previously reported PGPR and endophytic bacteria. Beta-propeller phytase genes with similarity to Bacillus were also identified. PGPR from agro-ecosystems appeared to show higher auxin production compared to those from undisturbed ecosystems. This study demonstrates that putative PGPR are widely distributed across Chilean soils. Further understanding of their contribution to the growth and adaptation of plant hosts to local soil conditions may provide opportunity for development of new PGPR in Chilean agriculture.


英文关键词1-Aminocyclopropane-1-carboxylate deaminase Auxin Phytase Plant growth-promoting rhizobacteria Rhizobacterial community
类型Article
语种英语
国家Chile ; USA ; Australia
收录类别SCI-E
WOS记录号WOS:000342226600013
WOS关键词SOIL MICROBIAL COMMUNITIES ; ACC-DEAMINASE ; CONFER RESISTANCE ; ATACAMA DESERT ; RHIZOSPHERE ; DIVERSITY ; PHYTASE ; GENE ; PHOSPHORUS ; STRAIN
WOS类目Soil Science
WOS研究方向Agriculture
来源机构Commonwealth Scientific and Industrial Research Organisation
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/181113
作者单位1.Univ La Frontera, Sci & Technol Bioresource Nucleus BIOREN, Temuco, Chile;
2.Univ La Frontera, Programa Doctorado Ciencias Recursos Nat, Temuco, Chile;
3.Univ Calif Riverside, Dept Environm Sci, Riverside, CA 92521 USA;
4.CSIRO Plant Ind, Canberra, ACT 2601, Australia
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GB/T 7714
Jorquera, Milko A.,Inostroza, Nitza G.,Lagos, Lorena M.,et al. Bacterial community structure and detection of putative plant growth-promoting rhizobacteria associated with plants grown in Chilean agro-ecosystems and undisturbed ecosystems[J]. Commonwealth Scientific and Industrial Research Organisation,2014,50(7):1141-1153.
APA Jorquera, Milko A..,Inostroza, Nitza G..,Lagos, Lorena M..,Barra, Patricio J..,Marileo, Luis G..,...&Mora, Maria L..(2014).Bacterial community structure and detection of putative plant growth-promoting rhizobacteria associated with plants grown in Chilean agro-ecosystems and undisturbed ecosystems.BIOLOGY AND FERTILITY OF SOILS,50(7),1141-1153.
MLA Jorquera, Milko A.,et al."Bacterial community structure and detection of putative plant growth-promoting rhizobacteria associated with plants grown in Chilean agro-ecosystems and undisturbed ecosystems".BIOLOGY AND FERTILITY OF SOILS 50.7(2014):1141-1153.
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