Microbes and Plant Diseases

This is the correct option. The wheat rust causing fungus is Puccinia.

Phytophages are plant viruses and cause great loss to agriculture by causing diseases.

Potato spindle tuber disease is caused by Potato spindle tuber viriod (PSTVd).

Tinea pedis: Ringworm of the feet. Infections are commonly referred to as moccasin foot.

All of the above diseases are associated with Aspergillus sp.

In the humid weather, fungal growth is enhanced especially on the food products from which they can draw their nutrition.

Growth of fungus is increased with the moisture in the atmosphere, i.e. the amount of water vapours. Thus, rainy season is the best for the fungal growth. 

Correct answer. Northern corn leaf blight is caused by the fungus Exserohilum turcicum.

Correct answer. Brown spot of peas is caused by the bacterium Pseudomonas syringae.

Correct answer. White mold of pepper is caused by Sclerotinia sclerotiorum.

Correct answer. The most important disease of hemp is gray mold, caused by the fungus Botrytis cinerea. Crown gall of hemp is caused by Agrobacterium tumefaciens.

Correct answer. Wheat yellow leaf virus is a wheat, barley, rye, and oat pathogenic virus of the family Closteroviridae. The virus proliferates in the phloem of its host plants, interfering with the plant's ability to produce sufficient chlorophyll (chlorosis), causing the leaves to yellow and the plant to die.

Correct answer. Citrus canker is a disease affecting citrus species that is caused by the bacterium Xanthomonas axonopodis.

Correct answer. Gumming disease of sugarcane is caused by the bacterium Xanthomonas axonopodis.

Correct answer. Early blight of potato caused by the fungus Alternaria solani. Phytophthora infestans is an oomycete that causes the serious potato disease known as late blight of potato.