Which group of pathogens includes organisms that may lead to root rot?

The group of pathogens associated with causing root rot is primarily made up of fungi. Many fungal species thrive in moist environments and can invade plant root systems, leading to decay and deterioration of the roots. This results in impaired water and nutrient uptake, ultimately affecting the health and growth of the plant.

While oomycetes and certain bacteria can also contribute to root diseases, fungi are the primary causative agents for root rot. They can produce damaging enzymes and toxins that degrade root tissues and create conditions that are favorable for further infections. Additionally, nematodes can affect roots, but they typically cause damage through feeding rather than direct pathogens leading to rot. Thus, fungi stand out as the principal group responsible for root rot incidents in plants.