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In this study, the interaction of biosynthesized silver nanoparticles (BSNP) with native soil via plant transport was assessed in model pathosystem of Arabidopsis thaliana and Alternaria brassicicola. Foliar application of 5 μg/mL of BSNP reduced number of spores of fungi to 2.2 × 105 from 7 × 105, while numbers of lesions got reduced to 0.9/leaf in treated plants compared to 2.9/leaf in pathogen-infected plant without altering soil pH, electric conductivity, soil organic carbon and soil microbial biomass carbon. Soil enzyme activities including dehydrogenase, acid and alkaline phosphatase, urease, β-glucosidase and protease did not alter significantly in BSNP-treated plants compared to control plants. Application of BSNP did not alter the number of cultivable bacteria, fungi and actinomycetes. Effect of BSNP on uncultured bacterial diversity was measured by DGGE analysis which revealed similar banding pattern in all different treatments except in A. brassicicola-infected (AB) and A. brassicicola-infected plants treated with silver nanoparticles (AB + BSNP) after 120 days. Although AB-infected plants exhibited a decrease in bacterial diversity, treatment of AB + BSNP after 120 days demonstrated maximum bacterial diversity. McIntosh, Shannon, and Simpson diversity indices were calculated based on carbon source utilization pattern by BIOLOG analysis, revealing no significant difference among all treatments in different time intervals. BSNPs have the potential to act as strong antimicrobial agent for plant disease management without altering the native soil microflora.

Coexistence Between Populations.- Plant Associated Soil Micro-organisms.- Role of Microbial Diversity for Soil, Health and Plant Nutrition.- Reconstructing Soil Biology.- Rhizosphere Colonization: Molecular Determinants from Plant-Microbe Coexistence Perspective.- Belowground Mycorrhizal Endosymbiosis and Aboveground Insects: Can Multilevel Interactions be Exploited for a Sustainable Control of Pests?.- Coexistence Between Genomes.- Evolutionary Genomics: Linking Macromolecular Structure, Genomes and Biological Networks.- Evolutionary Genomics of the Nitrogen-Fixing Symbiotic Bacteria.- Genetic and Epigenetic Nature of Transgenerational Changes in Pathogen Exposed Plants.- Recent Advances in Functional Genomics and Proteomics of Plant Associated Microbes.- Molecular Mechanisms of Biocontrol by Trichoderma spp..- Coexistence Between Molecules.- Quorum Sensing in Bacteria-Plant Interactions.- Signals in the Underground: Microbial Signaling and Plant Productivity.- Protein-Protein Interactions in Plant Virus Movement and Pathogenicity.- Effects of Root Exudates in Microbial Diversity and Activity in Rhizosphere Soils.- Methods to Study Plant and Microbe Coexistence.- Siderotyping, a Straightforward Tool to Identify Soil and Plant-Related Pseudomonads.- Molecular Strategies for Identifying Determinants of Oomycete Pathogenicity.- Molecular Methods for Studying Microbial Ecology in the Soil and Rhizosphere.- Morphotyping and Molecular Methods to Characterize Ectomycorrhizal Roots and Hyphae in Soil.

Principles of Extreme Soil Microbiology.- The Microbiological Promises of Extreme Soils.- Microbial Diversity, Life Strategies, and Adaptation to Life in Extreme Soils.- Extreme Views on Prokaryote Evolution.- Biodiversity: Extracting Lessons from Extreme Soils.- Natural Extreme Soils.- Halophilic and Halotolerant Micro-Organisms from Soils.- Atacama Desert Soil Microbiology.- Microbial Communities and Processes in Arctic Permafrost Environments.- Aerobic, Endospore-Forming Bacteria from Antarctic Geothermal Soils.- Peatland Microbiology.- Subsurface Geomicrobiology of the Iberian Pyritic Belt.- The Potential for Extant Life in the Soils of Mars.- Anthropogenic Extreme Soils.- Bacteriology of Extremely Cold Soils Exposed to Hydrocarbon Pollution.- Microbiology of Oil-Contaminated Desert Soils and Coastal Areas in the Arabian Gulf Region.- Microbial Communities in Fire-Affected Soils.- Endophytes and Rhizosphere Bacteria of Plants Growing in Heavy Metal-Containing Soils.- Interactions of Fungi and Radionuclides in Soil.