相关实验视频

Updated: May 10, 2025

Workflow Based on the Combination of Isotopic Tracer Experiments to Investigate Microbial Metabolism of Multiple Nutrient Sources

Workflow Based on the Combination of Isotopic Tracer Experiments to Investigate Microbial Metabolism of Multiple Nutrient Sources

Published on: January 22, 2018

在Burkholderia sp.中对同化偏好进行转录组分析. 在M6-3和Arthrobacter sp. 中. 在M7-15中,它是M7-15的

Ran Liu^1,2, Hongyi Qin¹, Qian Wang²

¹College of Zhongbei, Nanjing Normal University, Danyang, Jiangsu, China.

Frontiers in microbiology

|April 22, 2025

概括

土壤微生物对或酸盐有明显的偏好. 不同的基因表达,特别是glnA基因,解释了这些使用差异,有助于提高使用效率.

科学领域:

土壤微生物学土壤微生物学
生物地质化学生物地质化学
分子生物学分子生物学

背景情况:

土壤微生物调解无机 (N) 的同化,这对植物吸收和使用效率至关重要.
了解微生物对 (NH₄⁺) 和酸盐 (NO₃^-) 的偏好对于土壤N循环至关重要.
在混合N条件下,微生物对N同化的代谢途径在很大程度上仍未被描述.

研究的目的:

为了研究两个主要的土壤微生物菌株的无机N偏好.
阐明差异性N同化背后的分子机制.
确定参与微生物N源选择的关键基因和调节剂.

主要方法:

分离和化两个微生物菌株 (Burkholderia sp. 在M6-3和Arthrobacter sp. 中. M7-15) 与不同的无机来源.
基于RNA测序的转录组分析,绘制代谢途径的地图.
差异基因表达分析专注于代谢基因.

主要成果:

菌株M6-3表现出对 (NH₄+) 的偏好,而菌株M7-15则偏好酸盐 (NO₃-).
这两种菌株都具有相似的代谢途径,但表现出胺合成酶基因 (glnA) 的差异表达.
全球调节器 GlnR 与glnA表达和N偏好观察到的不一致性有关.

结论:

差异性glnA基因表达,可能由GlnR调节,是微生物无机N偏好的关键因素.
这些发现为了解土壤微生物对N形式的利用提供了理论基础.
这项研究为选微生物提供了见解,以提高土壤无机使用效率.

关键词:

通过RNA-seq分析进行分析.细菌菌株的细菌菌株.无机同化无机同化的代谢途径是的代谢途径.的偏好的偏好

更多相关视频

A Tandem Liquid Chromatography–Mass Spectrometry-based Approach for Metabolite Analysis of Staphylococcus aureus

A Tandem Liquid Chromatography–Mass Spectrometry-based Approach for Metabolite Analysis of Staphylococcus aureus

Published on: March 28, 2017

Plant Promoter Analysis: Identification and Characterization of Root Nodule Specific Promoter in the Common Bean

Plant Promoter Analysis: Identification and Characterization of Root Nodule Specific Promoter in the Common Bean

Published on: December 23, 2017

相关概念视频

Overview of Nitrogen Metabolism

Overview of Nitrogen Metabolism

Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...

Overview of Metabolism

Overview of Metabolism

Living cells constantly carry out various chemical reactions which are necessary for their proper functioning. These reactions are interlinked to one another via multiple pathways. The collection of these chemical reactions is known as metabolism.
Plant Metabolism
Sunlight, the primary source of energy in plants, is first absorbed by the chlorophyll pigments present in their leaves. Plants then use this energy to carry out photosynthesis, where water is oxidized into oxygen and carbon dioxide...

Key Elements for Plant Nutrition

Key Elements for Plant Nutrition

Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the...