相关实验视频

Updated: Jan 7, 2026

Isolation and Analysis of Microbial Communities in Soil, Rhizosphere, and Roots in Perennial Grass Experiments

Isolation and Analysis of Microbial Communities in Soil, Rhizosphere, and Roots in Perennial Grass Experiments

Published on: July 24, 2018

植物发育阶段和灌水平对玉米根培养微生物组的影响

Carina Sá¹, Clarisse Brígido^2,3, Cátia Fidalgo¹

¹CESAM, Centre for Environmental and Marine Studies and Department of Biology, University of Aveiro, 3810-193 Aveiro, Portugal.

|December 30, 2025

概括

促进植物生长的细菌增强了玉米对干旱的抵抗力. 在植物中隔离这些微生物.

科学领域:

农业微生物学农业微生物学
植物与细菌之间的相互作用
压力生理学压力生理学

背景情况:

促进植物生长的细菌 (PGPB) 对于在环境压力下增强作物生存至关重要.
玉米 (Zea mays) 是一种易受水资源短缺影响的重要作物,需要采取战略来提高其抗旱能力.
了解植物发育阶段,水的可用性和有益的根相关微生物之间的相互作用是关键.

研究的目的:

从玉米中分离和鉴定不同水制和植物发育阶段的根表面和内菌细菌.
评估这些细菌分离物的透应激耐受性和促进植物生长的特征.
确定植物生命周期阶段和水压对细菌丰富性和功能的影响.

主要方法:

在100%,50%和0%的水制下,在植物和繁殖阶段从玉米根中分离根表面和内菌细菌.
使用BOX-PCR生成遗传指纹 (共400个菌株) 的细菌菌株类型化.
查透应激耐受性 (15%聚乙烯甘醇6000) 和促进植物生长的特征 (siderophore 生产,英多尔-3-酸合成,酸溶解).

主要成果:

在玉米生长的繁殖阶段,更高比例的内菌和草原菌表现出透应激耐受性.
里索普兰菌在繁殖阶段表现出增加的酸盐和 siderophore 产量.
促进细菌植物生长的活动因植物的发育阶段和水的可用性而异.

结论:

植物的发育阶段和水力压力条件显著影响相关细菌的特征.
在压力条件下的繁殖阶段选择玉米相关细菌可能会产生具有增强弹性和增长促进能力的菌株.
这些发现为有针对性地分离有益微生物提供了基础,以改善玉米种植的干旱耐受性.

关键词:

干旱干旱干旱干旱玉米内性细菌玉米内性细菌玉米根系球是玉米的根系球.植物的发育阶段.促进植物生长的细菌促进植物生长.

更多相关视频

Mycorrhizal Maps as a Tool to Explore Colonization Patterns and Fungal Strategies in the Roots of Festuca rubra and Zea mays

Mycorrhizal Maps as a Tool to Explore Colonization Patterns and Fungal Strategies in the Roots of Festuca rubra and Zea mays

Published on: August 26, 2022

Exploring the Root Microbiome: Extracting Bacterial Community Data from the Soil, Rhizosphere, and Root Endosphere

Exploring the Root Microbiome: Extracting Bacterial Community Data from the Soil, Rhizosphere, and Root Endosphere

Published on: May 2, 2018

相关概念视频

The Roles of Bacteria and Fungi in Plant Nutrition

The Roles of Bacteria and Fungi in Plant Nutrition

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.

Factors Influencing Microbial Growth: Osmolarity

Factors Influencing Microbial Growth: Osmolarity

Osmolarity is the measure of solute concentration in a solution. It plays a critical role in determining water availability for organisms. Water moves across semipermeable membranes through osmosis, flowing from regions of lower solute concentration (more dilute) to regions of higher solute concentration (more concentrated).In high-solute environments, microbial cells lose water, leading to dehydration and inhibited growth. The extent to which water is available to microbes in such environments...