Abstract：
:Horizontal gene transfer (HGT) is a main mechanism of bacterial evolution endowing bacteria with new genetic traits. The transfer of mobile genetic elements such as plasmids (conjugation) requires the close proximity of cells. HGT between genetically distinct bacteria largely depends on cell movement in water films, which are typically discontinuous in natural systems like soil. Using laboratory microcosms, a bacterial reporter system and flow cytometry, we here investigated if and to which degree mycelial networks facilitate contact of and HGT between spatially separated bacteria. Our study shows that the network structures of mycelia promote bacterial HGT by providing continuous liquid films in which bacterial migration and contacts are favoured. This finding was confirmed by individual-based simulations, revealing that the tendency of migrating bacteria to concentrate in the liquid film around hyphae is a key factor for improved HGT along mycelial networks. Given their ubiquity, we propose that hyphae can act as focal point for HGT and genetic adaptation in soil.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Berthold T,Centler F,Hübschmann T,Remer R,Thullner M,Harms H,Wick LYdoi
10.1038/srep36390subject
Has Abstractpub_date
2016-11-04 00:00:00pages
36390issn
2045-2322pii
srep36390journal_volume
6pub_type
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更新日期：2014-07-18 00:00:00
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