Sphagnum の宿主特異的および環境的コア細菌は、その安定性と機能を差別的に形成する
Xiangbo Yin1,2, Lee Ping Ang3, Rui-Liang Zhu1,4,5
1Bryology Laboratory, School of Life Sciences, East China Normal University, Shanghai 200241, China.
ISME communications
|December 22, 2025
まとめ
Sphagnum 蘚類の微生物叢は泥炭地の安定性に不可欠である。宿主特異的な微生物は細菌群集を安定化させ、環境微生物はネットワーク相互作用を強化し、生態系の回復力に対する多様な戦略を明らかにする。
科学分野:
- 微生物生態学
- 泥炭地生態系
- Sphagnum 蘚類生物学
背景:
- Sphagnum 蘚類は泥炭地生態系の基盤であり、その安定性のために微生物叢に依存している。
- Sphagnum におけるコア微生物叢メンバーの役割は、特に亜熱帯地域ではほとんど理解されていない。
研究 の 目的:
- Sphagnum コア微生物叢の distinct な構成要素を特定する。
- 宿主特異的および環境的微生物叢が Sphagnum の葉圏細菌群集と生態系の安定性にどのように影響するかを調査する。
主な方法:
- 亜熱帯山岳林における落葉-Sphagnum-土壌システムの垂直層位を調査した。
- 微生物群集組成とアセンブリプロセスを分析した。
- 微生物の安定性とネットワーク相互作用における宿主特異的および環境的コア分類群の役割を評価した。
主要な成果:
- Sphagnum は、周囲の落葉や土壌(確率的プロセス)とは異なり、決定論的プロセスによって形成される distinct な微生物群集を宿している。
- 宿主特異的なコア分類群(例:Ca. Eremiobacterota)は、微生物組成を安定化させた。
- 環境コア分類群は、相互作用強度とネットワークの堅牢性を強化し、pHや標高などの環境フィルターに異なる応答を示した。
結論:
- Sphagnum コア微生物叢は機能的に不均一であり、対照的な戦略を持つ宿主特異的および環境的構成要素からなる。
- これらの distinct な微生物叢戦略は、泥炭地生態系の全体的な安定性と回復力に集合的に貢献する。
- 微生物生態学;泥炭地生態系;Sphagnum 蘚類生物学
さらに関連する動画
関連する概念動画
Other Stress Responses in Bacteria
310
Bacteria have global regulatory systems that control several types of stress mechanisms. These include Pho regulon and the heat shock response, which are essential systems for environmental adaptation, such as nutrient limitation and proteotoxic stress. The Pho regulon and the heat shock response exemplify bacterial resilience, enabling rapid adaptation to fluctuating environmental conditions.Pho RegulonBacteria require phosphorus for essential cellular processes, including nucleic acid...
310
Bacterial Phylum Actinobacteria
573
Coryneform bacteria are gram-positive, aerobic, nonmotile rods that exhibit irregular, club-shaped, or V-shaped arrangements. Their V-shape results from snapping division, where the inner cell wall layer forms the cross-wall, while the outer layer remains intact until it ruptures on one side, causing the daughter cells to bend away.The primary genera are Corynebacterium and Arthrobacter. Corynebacterium includes diverse species, ranging from saprophytes to pathogens like Corynebacterium...
573
Factors Influencing Microbial Growth: pH
1.0K
Microorganisms are classified as acidophiles, neutrophiles, or alkaliphiles based on their pH growth preferences, reflecting their adaptations to specific environments. Maintaining a stable intracellular pH is critical for macromolecular stability and enzymatic activity, which can be challenged by external pH variations.Neutrophiles, such as Escherichia coli, grow optimally between pH 5.5 and 8.0. These microorganisms inhabit neutral or slightly acidic environments and employ mechanisms like...
1.0K
The Roles of Bacteria and Fungi in Plant Nutrition
46.5K
Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
46.5K
Environmental Applications of Microorganisms
903
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
903
Other Unique Bacteria
387
Magnetic bacteria exhibit a directed movement called magnetotaxis, driven by structures called magnetosomes. These magnetosomes consist of chains of magnetic particles made of either magnetite (Fe₃O₄) or greigite (Fe₃S₄) and are organized in a linear conformation by a protein scaffold within invaginations of the cell membrane. The bacteria align along the north–south magnetic field lines, much like a compass needle. They are typically microaerophilic or anaerobic...
387


