"Family Plasmodiophoraceae" refers to a group of fungi that infect plants causing diseases. The family includes several genera such as Plasmodiophora, Sorosphaera, and Polymyxa. Synonyms for this family are Plasmodiophoridae, Polymyxaceae, and Sorosphaeraceae. These fungi are known for their ability to cause clubroot disease in plants such as cabbage, cauliflower, and broccoli. The disease leads to stunted growth, yellowing of leaves, and the development of club-like structures on roots. The Plasmodiophoraceae family plays a significant role in plant pathology and understanding these fungi is crucial in the prevention and control of plant diseases.