エンドフィット性 Pseudomonas oryzihabitans CB24 脂質再プログラムによる光合成を促進する

Nikky Deepa^1,2, Shivam Chauhan^1,2, Prabodh K Trivedi^2,3

¹Division of Crop Production and Protection, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow, India.

Plant, cell & environment

|August 29, 2025

まとめ

脂質代謝とエッセンシャルオイルの生成を促進することで,ペラゴニウム・グレーボレンスの成長を促進する. この微生物の結合により植物生理学と植物化学が改善され収穫が増加します

科学分野:

植物と微生物の相互作用
エンドフィティック微生物学
植物生化学

背景:

ペラゴニウム・グレーボレンスはエッセンシャルオイルで高く評価されています
植物生理学と植物化学に寄生関係が影響する.
エンドファイト媒介による調節のメカニズムはほとんど未知のものである.

研究の目的:

Pseudomonas oryzihabitans CB24のワクチン接種がP. graveolensに与える影響を調査する.
植物代謝におけるエンドファイトによる変化の背後にあるメカニズムを解明する.
植物の成長と収穫を制御する方法を理解する.

主な方法:

P. oryzihabitans CB24でP. graveolensを接種する
植物脂質動態と遺伝子発現の分析
酵素活性と代謝物質の蓄積の測定

主要な成果:

P. oryzihabitans CB24は,前駆体合成を促進し,重要な代謝遺伝子 (plc,MGD1,SQD2) を向上させることで,クロロプラストグリセロリピド (MGDG,SQDG) を増加させた.
光採集複合体 (LHCA2,LHCA1,PsaA,PetE,PetF,PsbO) に関する遺伝子のアップレギュレーションと,ルビスコの活性化が観察されました.
DXS遺伝子の発現が強化され,モノテルペノイド (ゲラニオール,リナロール) の産生が増加し,代謝が二次生物合成へと移行した.

結論:

P. oryzihabitans CB24は,P. graveolensの脂質代謝と二次代謝産物を有意に変化させる.
植物生理学的プロセスを強化し,窒素の吸収,炭素の吸収,抗酸化能力を高める.
この微生物の結合は宿主植物の成長,発達,エッセンシャルオイルの収穫量に大きな改善をもたらします

キーワード:

エンドフィットジェラニオール脂質モノテルペノイド二次代謝

さらに関連する動画

08:37

Light-Controlled Fermentations for Microbial Chemical and Protein Production

Published on: March 22, 2022

4.2K

08:09

Development of a Cabbage Protoplast System for Studying Hypoxia Tolerance in Brassica

Published on: September 20, 2024

536

関連する概念動画

01:29

Biosynthesis of Lipids

Microbial membranes exhibit remarkable diversity in lipid composition, reflecting evolutionary adaptations to various environmental conditions. The three domains of life—Bacteria, Archaea, and Eukarya—synthesize membrane lipids through distinct biosynthetic pathways, leading to fundamental structural differences that impact membrane stability, function, and adaptability.Fatty Acid-Based Lipids in Bacteria and EukaryaBacteria and eukaryotes share a common fatty acid biosynthesis...

01:30

Anoxygenic Photosynthesis

143

Anoxygenic photosynthesis is a phototrophic process that captures light energy to drive carbon fixation without producing molecular oxygen. Unlike oxygenic photosynthesis, which utilizes water as an electron donor and releases oxygen, anoxygenic phototrophs use alternative electron donors such as hydrogen sulfide (H₂S), elemental sulfur (S⁰), or thiosulfate (S₂O₃²⁻). This process is carried out by diverse groups of bacteria, including purple bacteria, green...

143

01:26

Oxygenic Photosynthesis

182

Oxygenic photosynthesis is a fundamental process in which light energy is harnessed to drive the oxidation of water, leading to the production of molecular oxygen (O₂), adenosine triphosphate (ATP), and nicotinamide adenine dinucleotide phosphate (NADPH). This process is essential for sustaining aerobic life on Earth and is primarily carried out by cyanobacteria, algae, and plants. The core of oxygenic photosynthesis lies in the thylakoid membranes, where chlorophyll pigments facilitate...

182

01:46

The Calvin Benson Cycle

4.7K

Ribulose 1,5- bisphosphate carboxylase/oxygenase (RuBisCo) is a critical enzyme that catalyzes carbon dioxide assimilation during photosynthesis. However, it is an inefficient enzyme, having an extremely slow catalytic rate. A typical enzyme can process about a thousand molecules per second; however, RuBisCo fixes only around three-carbon dioxides per second. Photosynthetic cells compensate for this slow rate by synthesizing very high amounts of RuBisCo, making it the most abundant single...

4.7K

01:28

Gene Regulation in Microbial Communities: Quorum Sensing

Quorum sensing is a mechanism of bacterial communication that enables coordinated gene expression in response to changes in population density. This facilitates collective behaviors that enhance survival, resource acquisition, and ecological adaptation. This process relies on small signaling molecules called autoinducers that accumulate as bacterial populations grow. When a critical threshold concentration of autoinducers is reached, bacterial cells collectively modify gene expression,...

01:27

C4 Pathway and CAM

46.2K

Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
C4 Pathway
The C4 pathway is used by plants such as...