ArticleEnvironmental microbiome2022
Rhizosheath-root system changes exopolysaccharide content but stabilizes bacterial community across contrasting seasons in a desert environment.
Article in Environmental microbiome, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 49 citations in OpenAlex.
- The root's hidden ally: How the rhizosheath microbiome fortifies crops against drought.aBIOTECH · 2026Review
- Desert Plant Seed Endophytes: A Reservoir of Stress-AdaptedMicroorganisms · 2026Article
- Niche-Driven Bacterial Assembly Versus Weak Geographical Divergence of Fungi in the Rhizosheath of Desert PlantPlants (Basel, Switzerland) · 2025Article
- Deletion of ACC Deaminase in Symbionts Converts the Host Plant From Water Waster to Water Saver.Plant, cell & environment · 2025Article
- Article
- Functional redundancy buffers the effect of poly-extreme environmental conditions on southern African dryland soil microbial communities.FEMS microbiology ecology · 2024Article
- Long-Term Benefits ofPlants (Basel, Switzerland) · 2024Article
- Harnessing rhizospheric core microbiomes from arid regions for enhancing date palm resilience to climate change effects.Frontiers in microbiology · 2024Review
- Harnessing chickpea bacterial endophytes for improved plant health and fitness.AIMS microbiology · 2024Review
- The Composition and Diversity of the Rhizosphere Bacterial Community of Ammodendron bifolium Growing in the Takeermohuer Desert Are Different from Those in the Nonrhizosphere.Microbial ecology · 2023Article
- Composition and Distribution Characteristics of Rhizosphere Bacterial Community of Ammodendron bifolium Growing in Takeermohuer Desert Are Different from Those in Non-rhizosphere.Microbial ecology · 2023Article
- The plant rhizosheath-root niche is an edaphic "mini-oasis" in hyperarid deserts with enhanced microbial competition.ISME communications · 2022Article
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Authors and funding
14 authors at 7 institutions in 5 countries.
Funding
Abstract
backgroundIn hot deserts daily/seasonal fluctuations pose great challenges to the resident organisms. However, these extreme ecosystems host unique microenvironments, such as the rhizosheath-root system of desert speargrasses in which biological activities and interactions are facilitated by milder conditions and reduced fluctuations. Here, we examined the bacterial microbiota associated with this structure and its surrounding sand in the desert speargrass Stipagrostis pungens under the contrasting environmental conditions of summer and winter in the Sahara Desert.
resultsThe belowground rhizosheath-root system has higher nutrient and humidity contents, and cooler temperatures than the surrounding sand. The plant responds to the harsh environmental conditions of the summer by increasing the abundance and diversity of extracellular polymeric substances (EPS) compared to the winter. On the contrary, the bacterial community associated with the rhizosheath-root system and its interactome remain stable and, unlike the bulk sand, are unaffected by the seasonal environmental variations. The rhizosheath-root system bacterial communities are consistently dominated by Actinobacteria and Alphaproteobacteria and form distinct bacteria communities from those of bulk sand in the two seasons. The microbiome-stabilization mediated by the plant host acts to consistently retain beneficial bacteria with multiple plant growth promoting functions, including those capable to produce EPS, which increase the sand water holding capacity ameliorating the rhizosheath micro-environment.
conclusionsOur results reveal the capability of plants in desert ecosystems to stabilize their below ground microbial community under seasonal contrasting environmental conditions, minimizing the heterogeneity of the surrounding bulk sand and contributing to the overall holobiont resilience under poly-extreme conditions.
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