単一 の 細菌 の 属 は,複雑 な 微生物 群 の 根 の 成長 を 維持 する
Omri M Finkel1,2,3, Isai Salas-González1,2,4, Gabriel Castrillo1,2,5
1Department of Biology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Nature
|October 1, 2020
まとめ
植物の根の成長は 複雑な微生物コミュニティによって調整されます バクテリアの属Variovoraxは 植物ホルモンのレベルを変化させることで 成長抑制を逆転させ 回復力のある作物を生み出します
科学分野:
- 微生物学
- 植物生物学
- エコロジー
背景:
- 植物の成長は微生物コミュニティ内の複雑な相互作用によって影響を受けます
- 樹根圏の化学信号は 根の健康と発達に大きな影響を与えます
- これらの微生物の相互作用を理解することは 植物学にとって極めて重要です
研究 の 目的:
- 微生物コミュニティの相互作用が アラビドプシスの根の成長にどのように影響するか調べる
- 植物-微生物-環境の相互作用を研究するためのモデルシステムを確立する.
- 根の発達に影響を与える特定の微生物とメカニズムを特定する.
主な方法:
- アラビドプシスの苗を 合成細菌集団で接種する
- アビオティック環境の操作とバクテリアの植民地の測定
- 重要な相互作用を特定するために,合成コミュニティをモジュールに分解する.
主要な成果:
- バクテリアの属Variovoraxは,根の成長の重要な調節剤として特定されました.
- Variovoraxは様々なバクテリア菌株とコミュニティ全体によって引き起こされる深刻な根の成長阻害を逆転させました.
- Variovoraxは植物ホルモンのレベルを操作するためにオクシン分解オペロンを使用します.
結論:
- 代謝信号の干渉は 植物と微生物の通信ネットワークを形作ります
- Variovoraxの根の回復能力は,特定の微生物の介入の重要性を強調しています.
- リゾスフィアの化学相互作用を最適化することで 回復力のある生産性の高い作物を 開発する戦略が生まれます
さらに関連する動画
関連する概念動画
Bacterial Phylum Verrucomicrobiota
348
The phylum Verrucomicrobiota comprises at least four characterized orders, with most species classified within the order Verrucomicrobiotales. Members of this phylum are either aerobic or facultatively aerobic, with the ability to ferment sugars. A notable exception is the genus Methylacidiphilum, which consists of aerobic methanotrophs. Additionally, some Verrucomicrobiota establish symbiotic relationships with protists. These bacteria are widely distributed across various environments,...
348
Bacterial Phylum Actinobacteria
388
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...
388
Bacterial Phylum Tenericutes
308
The phylum Tenericutes, which includes the single class Mollicutes, comprises bacteria that lack cell walls. The term "Mollicutes" derives from the Latin word mollis, meaning "soft." These organisms are among the smallest known and are commonly referred to as mycoplasmas due to the prominence of the genus Mycoplasma, which includes well-known human pathogens. Despite their inability to stain gram-positively (a result of their lack of cell walls), mycoplasmas are phylogenetically related to the...
308
The Roles of Bacteria and Fungi in Plant Nutrition
46.1K
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.
46.1K
Other Unique Bacteria
288
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...
288
Bacterial Phylum Firmicutes
585
Firmicutes is a diverse phylum of Gram-positive bacteria characterized by a low GC content in their genomes. This phylum includes organisms with monoderm or diderm cell envelopes, highlighting a complex evolutionary history. Firmicutes comprises several major orders, including Lactobacillales, Clostridiales, and Bacillales, which exhibit remarkable diversity in their morphology, metabolism, and ecological roles.The order Lactobacillales includes lactic acid bacteria, which are fermentative...
585


