Inferences from inventories of microbes in ecological vineyard settings

Abstract

Malfunctioning soils are specifically problematic in organically cultivated cropping systems, where plants are relying on well functioning soil processes. The here presented experiments aim at describing the effect of degraded soil conditions and compost, green manure or dry mulching based organic amendments on microbial communities associated with the rhizosphere and roots of grapevines. They were performed within the frame of project CORE Organic Plus ReSolVe. Several relationships based on Dice cluster analyses of DGGE gel profiles suggest that fungal and bacterial communities from degraded and non-degraded areas differ. Results also suggest that composted organic amendments and green manure can support the development or enhancement of root associated communities that are different from those in degraded areas. However, diversity indexes did not show that bacterial or fungal communities differed in species number or evenness when degraded and non-degraded plots were compared. With culture dependent methods, a high diversity of Streptomyces spp., best known for their potential to produce antibiotics and increasingly depicted as beneficial plant associated bacteria, were isolated from degraded and non-degraded areas.

Keywords

Microbial community structure; DGGE; Fungi; Bacteria; Actinobacteria; Streptomyces

Published in

EQA
2018, volume: 31, pages: 47-56
Publisher: UNIV STUDI BOLOGNA, DEPT AGRICULTURAL SCIENCES

SLU Authors

• Strålenhielm, Anna

  • Department of Soil and Environment, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Soil Science

Publication identifier

• DOI: https://doi.org/10.6092/issn.2281-4485/7921

Permanent link to this page (URI)

https://res.slu.se/id/publ/102513