Soil biodiversity for agricultural sustainability

Brussaard, L.; Ruiter, Peter C. de; Brown, G. G.

doi:10.1016/j.agee.2006.12.013

Cited by 771 publications

(468 citation statements)

References 29 publications

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“…Many previous studies suggested that healthy plants exhibit higher soil microbial diversity compared to diseased plants (Bakker et al 2010;Brussaard et al 2007), while organic amendments could significantly improve microbial diversity. It has been reported that microbial diversity in the rhizosphere soils negatively correlated with occurrence of soil borne disease and positively correlated with the plant resistance to pathogens (Bailey and Lazarovits 2003;Bulluck and Ristaino 2002;Gamliel et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Molecular characterization of microbial communities in the rhizosphere soils and roots of diseased and healthy Panax notoginseng

Hao

Zeng

et al. 2015

Antonie van Leeuwenhoek

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Rhizosphere and root-associated microbial communities are known to be related to soil-borne disease and plant health. In the present study, the microbial communities in rhizosphere soils and roots of both healthy and diseased Panax notoginseng were analyzed by high-throughput sequencing of 16S rRNA for bacteria and 18S rRNA internal transcribed spacer for fungi, to reveal the relationship of microbial community structure with plant health status. In total, 5593 bacterial operational taxonomic units (OTUs) and 963 fungal OTUs were identified in rhizosphere soils, while 1794 bacterial and 314 fungal OTUs were identified from root samples respectively. Principal coordinate analysis separated the microbial communities both in the rhizosphere soils and roots of diseased P. notoginseng from healthy plants. Compared to those of healthy P. notoginseng, microbial communities in rhizosphere soils and roots of diseased plants showed a decrease in alpha diversity. By contrast, bacterial community dissimilarity increased and fungal community dissimilarity decreased in rhizosphere soils of diseased plants, while both bacterial and fungal community dissimilarity in roots showed no significant difference between healthy and diseased plants. Redundancy analysis at the phylum level showed that mycorrhizal colonization and soil texture significantly affected microbial community composition in rhizosphere soils, whereas shoot nutrition status had a significant effect on microbial community composition in root samples. Our study provided strong evidence for the hypothesis that microbial diversity could potentially serve as an indicator for disease outbreak of medicinal plants, and supported the ecological significance of microbial communities in maintaining plant healthy and soil fertility.

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Section: Introductionmentioning

confidence: 99%

Molecular characterization of microbial communities in the rhizosphere soils and roots of diseased and healthy Panax notoginseng

Hao

Zeng

et al. 2015

Antonie van Leeuwenhoek

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“…These processes, as well as hydrology, aeration, and biogeochemistry in soils, are influenced heavily by biota living in the soil matrix. The abundance and diversity of microbial, fungal, plant, and invertebrate populations in soils are known to influence ecosystem processes and functions dramatically [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Toxicity of diesel contaminated soils to the subantarctic earthworm Microscolex macquariensis

Mooney

King

Wasley

et al. 2012

Enviro Toxic and Chemistry

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Abstract-Several fuel spills have occurred on subantarctic Macquarie Island (54830 0 S 158857 0 E) associated with storing fuel and generating power for the island's research station. The Australian Antarctic Division began full-scale, on-site remediation of these sites in 2009. To develop appropriate target concentrations for remediation, acute and chronic tests were developed with the endemic earthworm, Microscolex macquariensis, using avoidance, survival, and reproduction as endpoints. Uncontaminated low (3%), medium (11%), and high (38-48%) carbon content soils from Macquarie Island were used to examine the influence of soil carbon on toxicity. Soils were spiked with Special Antarctic Blend (SAB) diesel and used either immediately to simulate a fresh spill or after four weeks to simulate an aged spill. Earthworms were sensitive to fresh SAB, with significant avoidance at 181 mg/kg; acute 14-d survival median lethal concentration (LC50) of 103 mg/kg for low carbon soil; and juvenile production median effective concentration (EC50) of 317 mg/kg for high carbon soil. Earthworms were less sensitive to aged SAB than to fresh SAB in high carbon soil for juvenile production (EC50 of 1,753 and 317 mg/kg, respectively), but were more sensitive for adult survival (LC50 of 2,322 and 1,364 mg/kg, respectively). Using M. macquariensis as a surrogate for soil quality, approximately 50 to 200 mg SAB/kg soil would be a sufficiently protective remediation target.

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“…Similarly, reducing farm investment risk in a changing climate will entail the greater use of monitoring to inform management practices that increase farm ecosystem stability and resilience to climate stress (Griffiths et al, 2000;Tobor-Kaplon et al, 2005;Harle et al, 2006;Brussaard et al, 2007). Therefore, sequestering carbon in agricultural soils is one such possible synergy that creates additional property rights for farmers, retains land values by soil conservation, and may improve conventional yields by modulating soil ecosystem variability (Klein et al, 2007;Milne et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Agricultural bio-char production, renewable energy generation and farm carbon sequestration in Western Australia: Certainty, uncertainty and risk

McHenry

2009

Agriculture, Ecosystems & Environment

245

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Soil biodiversity for agricultural sustainability

Cited by 771 publications

References 29 publications

Molecular characterization of microbial communities in the rhizosphere soils and roots of diseased and healthy Panax notoginseng

Molecular characterization of microbial communities in the rhizosphere soils and roots of diseased and healthy Panax notoginseng

Toxicity of diesel contaminated soils to the subantarctic earthworm Microscolex macquariensis

Agricultural bio-char production, renewable energy generation and farm carbon sequestration in Western Australia: Certainty, uncertainty and risk

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