What Is Pseudomonas syringae?

Pseudomonas syringae is a rod-shaped, gram-negative bacterium belonging to the Pseudomonadaceae family. It is also a plant pathogen that infects a wide range of species.

History of Pseudomonas Syringae

In 1961, Paul Hoppe, a member of the U.S. Department of Agriculture, studied a corn fungus by grinding up infected leaves each season and then tracking the disease throughout the season.

During that same year, a surprise frost occurred, bringing peculiar results: only plants infected with the diseased powder incurred frost damage, leaving healthy plants unfrozen.

That phenomenon baffled scientists until the early 1970s, when Stephen Lindow, a graduate of the University of Wisconsin–Madison, found a bacterium in the dried leaf powder.

Lindow’s findings proved that when the bacterium was introduced to plants where it is originally absent, the plants became very vulnerable to frost damage. That’s when he identified the bacterium as Pseudomonas syringae.

Symptoms of Diseases Caused By Pseudomonas Syringae

As we mentioned earlier, Pseudomonas syringae is a plant pathogen. Meaning that you’re safe from it. With that being said, your plants are at serious risk.

The bacterium is responsible for several economically important diseases in the Pacific Northwest, and it can infect a wide variety of fruits, vegetables, and ornamental plants.

Typically, plants infected with Pseudomonas syringae suffer from one or more of the following symptoms:

  • Spots and blisters on fruit
  • Flowers or flower buds turn brown to black
  • Dead dormant buds, common on cherries and apricots
  • Death of entire clusters of younger, expanding leaves on filbert trees
  • Discolored or blackened leaf veins and petioles resulting from systemic invasion and infection
  • Shoot-tip dieback that may appear as dead, blackened twig tissue extending down some distance from the tip.
  • Stem cankers, which are depressed areas in the bark that darken with time

Although none of those symptoms sound serious, botanists say that plants infected with Pseudomonas syringae are at serious risk if the bacterium is not treated right away.

How You Can Treat Pseudomonas Syringae

Since Pseudomonas syringae is developing resistance to antibiotics, there’s no knowing whether the medicine that can treat it today will work tomorrow.

Currently, the best method for controlling diseases caused by Pseudomonas syringae is to spray bactericides that include a variety of copper compounds or other heavy metals.

All that being said, unless your plants are already suffering from a disease caused by Pseudomonas syringae, you shouldn’t be worrying about the treatment.

You should be worrying about how to prevent the disease.

Remember, an ounce of prevention is worth a pound of cure. So why not take safety precautions right now, so your plants won’t have to face the risk of catching a disease caused by Pseudomonas syringae?

If you’re now wondering what safety precautions we are talking about, disinfecting your home and workplace with a solution that can kill Pseudomonas syringae is all you need to do.

How Alliance Enviro-Tech Can Help

Alliance Enviro-Tech can disinfect both residential and commercial spaces thoroughly.

Our Path-Guard® System can kill Pseudomonas syringae in under 5 minutes, giving you peace of mind to know the plants on your property are as safe as houses.

For more information, contact us to find out how we can help keep your property safe and clean.