Differences in stability of seed-associated microbial assemblages in response to invasion by phytopathogenic microorganisms

• DOI: 10.7717/peerj.1923
• Publication Date: 2016-04-11T04:48:43Z
• Authors: Samir Rezki; Claire Campion; Beatrice Iacomi-V...; Anne Preveaux; Youness Toualbia; Sophie Bonneau; Martial Briand; Emmanuelle Laurent; Gilles Hunault; Philippe Simoneau; Marie-Agnès Jacques; Matthieu Barret
• Keywords: Raphanus

Seeds are involved in the vertical transmission of microorganisms from one plant generation to another and consequently act as reservoirs for microbiota. However, little is known about structure seed-associated microbial assemblages regulators assemblage structure. In this work, we have assessed response Raphanus sativus invading phytopathogenic agents, bacterial strain Xanthomonas campestris pv. ( Xcc ) 8004 fungal Alternaria brassicicola Abra43. According indicators (16S rRNA gene gyrB sequences) (ITS1) diversity employed study, seed did not change overall composition resident assemblages. contrast Abra43 strongly modified richness without affecting The sensitivity mostly related changes relative abundance closely species that belong genus. Variation stability microbiota invasions could be explained by differences pathways these micro-organisms, which ultimately results divergence spatio-temporal colonization habitat.