According to Esau which virus is transported through phloem

Options

A. Bunchy top virus
B. Curly top virus
C. Tungro virus
D. TMV

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which virus is transported through the phloem according to Dr. Esau. The options provided are Bunchy top virus, Curly top virus, Tungro virus, and Tobacco Mosaic Virus (TMV).

2. **Identifying the Correct Virus**: According to Dr. Esau, the virus that is specifically noted to be transported through the phloem is the Curly top virus. This information is crucial as it directly answers the question.

3. **Characteristics of Curly Top Virus**: The Curly top virus is known to be highly contagious and affects plant growth and development. It causes plants to become stunted, twisted, and shriveled, leading to deformation of leaves, fruits, and other plant parts.

4. **Historical Context**: The Curly top virus was first identified in California in 1890, particularly affecting the sugar beet industry. By 1900, it was noted in various western states where sugar beets were cultivated.

5. **Conclusion**: Based on Dr. Esau's findings published in 1954, the correct answer to the question is the Curly top virus, as it is the virus that spreads through the phloem (the food conducting tissue of plants).

**Final Answer**: The virus transported through phloem according to Esau is the Curly top virus.

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