Isolation of a Novel Plant Growth-Promoting Dyella sp. From a Danish Natural Soil

IF 2.7 4区生物学 Q2 ENVIRONMENTAL SCIENCES

Environmental Microbiology Reports Pub Date : 2025-09-10 DOI:10.1111/1758-2229.70186

Laura Dethier, J. Rasmus P. Jespersen, Jemma Lloyd, Elena Pupi, Ruochen Li, Wanru Zhou, Fang Liu, Yang Bai, Barbara Ann Halkier, Deyang Xu

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Abstract

Natural soils are reservoirs of potentially beneficial microbes that can improve plant performance. Here, we isolated 75 bacterial strains from surface-sterilised roots of Arabidopsis thaliana (Arabidopsis) grown in a natural soil derived from an alder swamp. Culture-dependent isolation of individual strains from the roots, followed by monoassociation-based screening, identified seven bacteria that promoted Arabidopsis seedling weight. Of those, we identified a new species from the Dyella genus which increased the biomass of Arabidopsis and tomato seedlings in agar, as well as the shoot biomass of Arabidopsis grown in both the alder swamp soil and potting soil. Dyella sp. A4 specifically promoted the elongation of lateral roots without affecting lateral root number and primary root elongation. The new Dyella sp. A4 expands the toolbox of biostimulants for plant growth promotion via modulating root architecture.

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从丹麦天然土壤中分离到一种促进生长的新型植物Dyella sp.

天然土壤是潜在有益微生物的储存库，可以提高植物的生长性能。在这里，我们从生长在桤木沼泽的自然土壤中的拟南芥（Arabidopsis thaliana）表面消毒的根中分离出75株细菌。从根中分离培养依赖的单个菌株，然后进行基于单关联的筛选，鉴定出7种促进拟南芥幼苗重量的细菌。其中，我们鉴定出一种新的Dyella属植物，该植物增加了琼脂中拟南芥和番茄幼苗的生物量，以及在桤木沼泽土壤和盆栽土壤中生长的拟南芥的茎部生物量。Dyella sp. A4在不影响侧根数量和主根伸长的情况下，对侧根伸长有明显的促进作用。新的Dyella sp. A4扩展了通过调节根结构促进植物生长的生物刺激剂工具箱。

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来源期刊

Environmental Microbiology Reports ENVIRONMENTAL SCIENCES-MICROBIOLOGY

CiteScore

6.00

自引率

3.00%

发文量

审稿时长

3.0 months

期刊介绍： The journal is identical in scope to Environmental Microbiology, shares the same editorial team and submission site, and will apply the same high level acceptance criteria. The two journals will be mutually supportive and evolve side-by-side. Environmental Microbiology Reports provides a high profile vehicle for publication of the most innovative, original and rigorous research in the field. The scope of the Journal encompasses the diversity of current research on microbial processes in the environment, microbial communities, interactions and evolution and includes, but is not limited to, the following: the structure, activities and communal behaviour of microbial communities microbial community genetics and evolutionary processes microbial symbioses, microbial interactions and interactions with plants, animals and abiotic factors microbes in the tree of life, microbial diversification and evolution population biology and clonal structure microbial metabolic and structural diversity microbial physiology, growth and survival microbes and surfaces, adhesion and biofouling responses to environmental signals and stress factors modelling and theory development pollution microbiology extremophiles and life in extreme and unusual little-explored habitats element cycles and biogeochemical processes, primary and secondary production microbes in a changing world, microbially-influenced global changes evolution and diversity of archaeal and bacterial viruses new technological developments in microbial ecology and evolution, in particular for the study of activities of microbial communities, non-culturable microorganisms and emerging pathogens.