Most root diseases are caused by which group of organisms?

Most root diseases are caused by which group of organisms?

• A. Bacteria
• B. Fungi
• C. Viruses
• D. Nematodes

Answer: (B)

Fungi are the main culprits behind turf root diseases. Fungal pathogens readily invade living root tissue in the soil, break down cell walls, and decay the roots, which disrupts the plant’s ability to take up water and nutrients. They form resilient structures and spread through soil, debris, and moisture, causing infections that are often persistent and widespread. In turf, many of the most common root rots—caused by fungi such as Fusarium and Rhizoctonia—illustrate this pattern. While bacteria can cause some root issues and nematodes can damage roots, these are less often the primary cause of root diseases in turf compared with fungi. So, fungi best explain why root diseases are most commonly observed.

Fungi are the main culprits behind turf root diseases. Fungal pathogens readily invade living root tissue in the soil, break down cell walls, and decay the roots, which disrupts the plant’s ability to take up water and nutrients. They form resilient structures and spread through soil, debris, and moisture, causing infections that are often persistent and widespread. In turf, many of the most common root rots—caused by fungi such as Fusarium and Rhizoctonia—illustrate this pattern. While bacteria can cause some root issues and nematodes can damage roots, these are less often the primary cause of root diseases in turf compared with fungi. So, fungi best explain why root diseases are most commonly observed.