Diverse rhizosphere-associatedPseudomonasgenomes isolated along the marine-terrestrial transition zone of a Wadden island salt march

Abstract

AbstractSoil microbes are key drivers of ecosystem processes promoting nutrient cycling, system productivity, and resilience. While much is known about the roles of microbes in established systems, their impact on soil development and the successional transformation over time remains poorly understood. Here, we provide 67 diverse, rhizosphere-associatedPseudomonasdraft genomes from an undisturbed salt march primary succession spanning >100 years of soil development.Pseudomonasare cosmopolitan bacteria with a significant role in plant establishment and growth. We obtained isolates associated withLimonium vulgareandArtemisia maritima, two typical salt marsh perennial plants with roles in soil stabilization, salinity regulation, and biodiversity support. We anticipate that our data, in combination with the provided physiochemical measurements, will help identify genomic signatures associated with the different selective regimes along the successional stages, such as varying soil complexity, texture, and nutrient availability. Such findings would not only advance our understanding ofPseudomonas’role in natural soil ecosystems but also provide the basis for a better understanding of the roles of microbes throughout ecosystem transformations.