Friends or foes?
This type of organism causes diseases in plants.
What is a pathogen?
These single celled microorganisms have no membrane-bound nucleus.
What are bacteria?
This is the structure that gives arbuscular mycorrhizae its name, and it forms inside of a root cell, looking like a tree.
What is an arbuscule?
While viruses are most well know for infecting animals, they can also spread through these organisms.
What are plants?
In this type of relationship, both the plant and the microorganism benefits.
What is mutualism?
These organisms can form a hyphae and can cause diseases.
What are fungi?
Bacteria differentiate into nitrogen-fixing forms once they enter the plant cells. These forms are enclosed in a plant-derived membrane.
What are bacteroids?
This is the amount of viral diseases of plants.
What is more than 2 000?
In this type of relationship, one organism benefits while the other is harmed.
What is parasitism?
This bacterium forms nitrogen-fixing nodules on the roots of legumes.
What is Rhizobium?
After infection with Rhizobium bacteria, cells division continues in the root hair and forms these structures.
What are root nodules?
This type of organism can be dangerous to plants, as they can carry viruses and damage the plant's epidermis so that said viruses can infect them more easily.
What are herbivores/insects?
These fungi live on plant roots and help the plants absorb inorganic nutrients from the soil.
What is mycorrhizae?
This bacterium causes tumor-like grwoth at the wound of the plant and has a Ti-plasmid.
What is Agrobacterium tumefaciens?
Plant roots secrete these compounds, which trigger bacteria to secrete Nod factors.
What are flavonoids?
Besides being infected by external sources, plants can also gain a viral infection through their parents. This transmission has a specific name.
What is vertical transmission?
This beneficial microorganism lives inside plant tissues, sometimes between cells, and can help protect its host against pathogens.
What is an endophyte?
This type of organism is formed through a symbiotic relationship between a fungus and a photosynthetic partner (ex. green algae or Cyanobacterium)
What is a lichen?
This is the least common type of Mycorrhizae in nature.
What is Ectomycorrhizae?
A Dutch scientist used this device and the sap of tobacco to prove that Tobacco Mosaic disease is caused by a virus and not a bacterium.
What is a filter that can trap bacteria?