There also appears to be an increased rate of anal cancer in high-risk groups (in particular, men who have sex with men). This is unsurprising considering the link between anal cancer and human papillomavirus (HPV), and the fact that cervical cancer, also caused by HPV, is considered an AIDS-defining condition. HIV Encephalopathy is a severe condition usually seen in end-stage disease.
Gray Mold. There are different types of fungus that grow on plants for a variety of reasons. Gray mold on plants is caused by overhead watering, low temperatures and low humidity levels. Poor air circulation around the plant is another problem with this type of fungus, as well as low nitrogen levels in the soil.
Most plant diseases â around 85 percent â are caused by fungal or fungal-like organisms. However, other serious diseases of food and feed crops are caused by viral and bacterial organisms. Certain nematodes also cause plant disease.ere are a few examples of common signs and symptoms of fungal, bacterial and viral plant diseases: Fungal disease signs: 1  Leaf rust (common leaf rust in corn). 2  Stem rust (wheat stem rust).