Advertisement

The Soil Microbiome

There's a lot more than dirt to the soil in which plants grow.

By | January 1, 2013

A LOOK AT THE SOIL MICROBIOME

Plant pathogens, such as the Pseudomonas syringae pv. tomato (1), can enter through leaf pores known as stomata, which control respiration and releaseof water (2). In response to infection, plants release L-malic acid (3) from their roots, a food source for the beneficial bacterium Bacillus subtilis (4). The bacteria release toxins that suppress the root’s antimicrobial defenses (5) and stave off other potentially pathogenic bacterial strains (6), allowing B. subtilis to colonize the roots. B. subtilis colonization, in turn, causes the plant to produce abscisic acid, which leads to stomatal closing (7), helping prevent further infection. Similarly, when plants are infected with the tomato blight fungus Alternaria solani (8), nearby plants can initiate their own defenses by sensing warning signals transmitted between the plants via a plant root-fungal symbiotic system, the mycorrhiza, containing the beneficial fungus Glomus mosseae (9).

Read the full story.

Advertisement

Add a Comment

Avatar of: You

You

Processing...
Processing...

Sign In with your LabX Media Group Passport to leave a comment

Not a member? Register Now!

LabX Media Group Passport Logo

Follow The Scientist

icon-facebook icon-linkedin icon-twitter icon-vimeo icon-youtube
Advertisement

Stay Connected with The Scientist

  • icon-facebook The Scientist Magazine
  • icon-facebook The Scientist Careers
  • icon-facebook Neuroscience Research Techniques
  • icon-facebook Genetic Research Techniques
  • icon-facebook Cell Culture Techniques
  • icon-facebook Microbiology and Immunology
  • icon-facebook Cancer Research and Technology
  • icon-facebook Stem Cell and Regenerative Science
Advertisement
The Scientist
The Scientist
Advertisement
NeuroScientistNews
NeuroScientistNews
Life Technologies