Anna Oslizlo (Author), Polonca Štefanič (Author), Sabina Vatovec (Author), Sara Beigot Glaser (Author), Maja Rupnik (Author), Ines Mandić-Mulec (Author)

Abstract

Bacillus subtilis is a widespread and diverse bacterium t exhibits a remarkable intraspecific diversity of the ComQXPA quorum-sensing (QS) system. This manifests in the existence of distinct communication groups (pherotypes) that can efficiently communicate within a group, but not between groups. Similar QS diversity was also found in other bacterial species, and its ecological and evolutionary meaning is still being explored. Here we further address the ComQXPA QS diversity among isolates from the tomato rhizoplane, a natural habitat of B. subtilis, where these bacteria likely exist in their vegetative form. Because this QS system regulates production of anti-pathogenic and biofilm-inducing substances such as surfactins, knowledge on cell–cell communication of this bacterium within rhizoplane is also important from the biocontrol perspective. We confirm the presence of pherotype diversity within B. subtilis strains isolated from a rhizoplane of a single plant. We also show that B. subtilis rhizoplane isolates show a remarkable diversity of surfactin production and potential plant growth promoting traits. Finally, we discover that effects of surfactin deletion on biofilm formation can be strain specific and unexpected in the light of current knowledge on its role it this process.

Keywords

Bacillus subtilis;quorum sensing;zaznavanje celične gostote;komunikacija med celicami;rizosfera;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL BF - Biotechnical Faculty
UDC: 579.25/.26:631.461
COBISS: 4494968 Link will open in a new window
ISSN: 1751-7915
Views: 772
Downloads: 108
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Other data

Secondary language: Slovenian
Secondary keywords: Bacillus subtilis;zaznavanje celične gostote;komunikacija med celicami;rizosfera;
URN: URN:SI:UM:
Type (COBISS): Scientific work
Pages: str. 527-540
Volume: ǂVol. ǂ8
Issue: ǂissue ǂ3
Chronology: 2015
DOI: 10.1111/1751-7915.12258
ID: 9142938