Cited by 188Plant-Microbe Interactions and ImmunityNematode management and characterization studiesMicrobial Community Ecology and Physiology

Potato-associated bacteria and their antagonistic potential towards plant-pathogenic fungi and the plant-parasitic nematode Meloidogyne incognita(Kofoid & White) Chitwood

Krechel, Annette, Faupel, Annekathrin, Hallmann, Johannes, Ulrich, Andreas, Berg, Gabriele·2002·Canadian Journal of Microbiology

Abstract

To study the effect of microenvironments on potato-associated bacteria, the abundance and diversity of bacteria isolated from the rhizosphere, phyllosphere, endorhiza, and endosphere of field grown potato was analyzed. Culturable bacteria were obtained after plating on R2A medium. The endophytic populations averaged 10(3) and 10(5) CFU/g (fresh wt.) for the endosphere and endorhiza. respectively, which were lower than those for the ectophytic microenvironments, with 10(5) and 10(7) CFU/g (fresh wt.) for the phyllosphere and rhizosphere, respectively. The composition and richness of bacterial species was microenvironment-dependent. The occurrence and diversity of potato-associated bacteria was additionally monitored by a cultivation-independent approach using terminal restriction fragment length polymorphism analysis of 16S rDNA. The patterns obtained revealed a high heterogeneity of community composition and suggested the existence of microenvironment-specific communities. In an approach to measure the antagonistic potential of potato-associated bacteria, a total of 440 bacteria was screened by dual testing for in vitro antagonism towards the soilborne pathogens Verticillium dahliae and Rhizoctonia solani. The proportion of isolates with antagonistic activity was highest for the rhizosphere (10%), followed by the endorhiza (9%), phyllosphere (6%), and endosphere (5%). All 33 fungal antagonists were characterized by testing their in vitro antagonistic mechanisms, including their glucanolytic, chitinolytic, pectinolytic, cellulolytic, and proteolytic activity, and by their BOX-PCR fingerprints. In addition, they were screened for their biocontrol activity against Meloidogyne incognita. Overall, nine isolates belonging to Pseudomonas and Streptomyces species were found to control both fungal pathogens and M. incognita and were therefore considered as promising biological control agents.

Integrity signals

Registry

Crossref · 10.1139/w02-071

Cites

41 of 41 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Krechel, A., Faupel, A., Hallmann, J., Ulrich, A., & Berg, G.
Affiliations
University of Rostock (DE)
Venue
Canadian Journal of Microbiology
Published
2002-09-01
Volume
48
Issue
9
Pages
772-786
ISSN
  • 0008-4166 (ISSN-L)
  • 1480-3275
OpenAlex
W2090531462
Cited by
188
References
41
Citations by year
2026: 4 · 2025: 2 · 2024: 8 · 2023: 4 · 2022: 5 · 2021: 7 · 2020: 9 · 2019: 10 · 2018: 6 · 2017: 6 · 2016: 16 · 2015: 12 · 2014: 7 · 2013: 15 · 2012: 4
FWCI
7.58
Type
journal article
Language
en
Open access
closed
Locations
  • Canadian Journal of Microbiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Deutsche Forschungsgemeinschaft
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant-Microbe Interactions and Immunity
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Nematode management and characterization studies
  • Physical Sciences › Environmental Science › Ecology › Microbial Community Ecology and Physiology
Keywords
rhizosphere bacteria, phyllosphere bacteria, bacterial community composition, plant pathogenic fungi, Verticillium dahliae, Rhizoctonia solani, Meloidogyne incognita, biological control, antagonistic bacteria, Pseudomonas, Streptomyces, bacterial diversity, 16S rRNA gene, BOX-PCR fingerprinting, enzyme activity
MeSH terms
Animals, Antibiosis, Bacteria, Culture Media, Mitosporic Fungi, DNA, Ribosomal, Fatty Acids, Pest Control, Biological, Plant Diseases, Solanum tuberosum, Polymorphism, Restriction Fragment Length, Rhizoctonia, RNA, Ribosomal, 16S, Soil Microbiology, Tylenchoidea, Ecosystem, Plant Roots, Verticillium

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review