Infectious disease in plants

• What should you be able to describe by the end of the video?

  Causes and symptoms of infectious diseases
• What are the two specific infectious diseases in plants discussed?

  Tobacco mosaic virus and rose black spot
• What is tobacco mosaic virus also known as?

  TMV
• What type of plant infection is TMV?

  A widespread viral infection
• Which plant species can be affected by TMV?

  Multiple plant species including tomatoes
• What symptom does TMV cause in leaves?

  Discoloration in a mosaic pattern
• How does TMV affect photosynthesis?

  It reduces the rate of photosynthesis
• What is the impact of reduced photosynthesis on plant growth?

  It reduces the growth of the plant
• What is the second plant disease discussed?

  Rose black spot
• What causes rose black spot?

  A fungus
• What symptoms does rose black spot cause on leaves?

  Development of purple or black spots
• What happens to leaves after developing spots from rose black spot?

  They often turn yellow and fall off
• How does rose black spot affect photosynthesis?

  It causes the rate of photosynthesis to fall
• What are the two ways to treat rose black spot?

  Spraying with fungicides and removing infected leaves
• What are chemicals that kill fungi called?

  Fungicides
• What should be done with infected leaves of rose black spot?

  They should be removed and destroyed
• Where can you find more questions on infectious plant diseases?

  In the vision workbook
• What is the overall goal of the video regarding infectious diseases in plants?

  To describe causes and symptoms of diseases