The effects of Pseudomonas strains isolated from Achnatherum inebrians on plant growth: A genomic perspective

IF 3.6 4区生物学 Q2 ENVIRONMENTAL SCIENCES Environmental Microbiology Reports Pub Date : 2024-10-10 DOI:10.1111/1758-2229.70011

Jinjin Liang, Bowen Liu, Michael J. Christensen, Chunjie Li, Xingxu Zhang, Zhibiao Nan

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Abstract

Achnatherum inebrians is a perennial grass widely distributed in northwest China. Nearly all wild A. inebrians plants are infected by Epichloë endophytes. In this study, bacteria from the phyllosphere were isolated from leaves of both endophyte-free and endophyte-infected A. inebrians and sequenced for identification. Pseudomonas, comprising 48.12% of the culturable bacterial communities, was the most dominant bacterial genus. Thirty-four strains from 12 Pseudomonas species were used to inoculate A. inebrians seeds and plants. Results indicated that Epichloë significantly increased the diversity and richness index of the phyllosphere. Pseudomonas Sp1, Sp3, Sp5 and Sp7 had a significantly positive effect on plant growth and photosynthesis, whereas Sp10, Sp11 and Sp12 had a significantly negative effect. Whole-genome and pan-genome analysis suggested that the variability in the effects of Pseudomonas on A. inebrians was related to differences in genome composition and genomic islands.

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从Achnatherum inebrians中分离的假单胞菌株对植物生长的影响：基因组视角

Achnatherum inebrians是一种多年生草本植物，广泛分布于中国西北地区。几乎所有的野生A. inebrians植物都受到Epichloë内生菌的感染。本研究从无内生菌和受内生菌感染的茵芋叶片中分离了叶球细菌，并进行了测序鉴定。假单胞菌占可培养细菌群落的 48.12%，是最主要的细菌属。来自 12 个假单胞菌种的 34 株菌株被用来接种铁线莲种子和植株。结果表明，Epichloë能显著提高植物叶球的多样性和丰富度指数。假单胞菌 Sp1、Sp3、Sp5 和 Sp7 对植物生长和光合作用有明显的积极影响，而 Sp10、Sp11 和 Sp12 则有明显的消极影响。全基因组和泛基因组分析表明，假单胞菌对A. inebrians影响的差异与基因组组成和基因组岛的差异有关。

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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.