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The Soil Ecosystem02:23

The Soil Ecosystem

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Plants obtain inorganic minerals and water from the soil, which acts as a natural medium for land plants. The composition and quality of soil depend not only on the chemical constituents but also on the presence of living organisms. In general, soils contain three major components:
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The Roles of Bacteria and Fungi in Plant Nutrition02:11

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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.
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The gut microbiome is formed by a vast and diverse community of bacteria that colonizes our large intestine. These bacteria start residing in the gut from birth and continue diversifying throughout life, influenced by factors such as diet, lifestyle, and stress. The gut bacterial community also includes bacteria from food and those that enter the colon through the anus.
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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...
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Related Experiment Video

Updated: Jan 6, 2026

Isolation and Analysis of Microbial Communities in Soil, Rhizosphere, and Roots in Perennial Grass Experiments
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Initial soil microbiome composition and functioning predetermine future plant health.

Zhong Wei1, Yian Gu1,2, Ville-Petri Friman1,3

  • 1Jiangsu Provincial Key Lab for Organic Solid Waste Utilization, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, National Engineering Research Center for Organic-based Fertilizers, Nanjing Agricultural University, Weigang 1, Nanjing, 210095, P.R. China.

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Area of Science:

  • Plant pathology
  • Microbiome research
  • Agricultural science

Background:

  • Plant-pathogen interactions are complex and influenced by environmental factors.
  • Predicting disease dynamics in agricultural systems remains challenging.

Purpose of the Study:

  • To investigate how initial soil microbiome composition influences plant disease outcomes.
  • To identify microbial factors that confer plant protection against pathogens.

Main Methods:

  • Analyzing soil microbiome composition and function in relation to plant survival.
  • Identifying specific bacterial taxa and genes associated with disease resistance.
  • Assessing the heritability of microbiome-mediated plant protection through soil transplantation.

Main Results:

  • Initial soil microbiome composition significantly predicted plant survival or disease susceptibility.
  • Plant-protecting microbiomes were enriched in rare taxa, suppressive Pseudomonas and Bacillus bacteria, and antimicrobial genes.
  • Microbiome-induced plant protection was transferable to subsequent plant generations.

Conclusions:

  • Early-stage soil microbiome characteristics are critical determinants of plant health and disease outcomes.
  • Harnessing beneficial soil microbes offers a promising strategy for sustainable agriculture and disease management.