Infectious diseases in plants Flashcards
1
Q
Tobacco mosaic virus
A
TMV is a widespread plant infection infecting a number of plant species including tomatoes
TMV causes the leaves to discolor in a mosaic pattern, because of this discoloration, photosynthesis is reduced
This means that the growth of the plant is also reduced
2
Q
Rose black spot
A
Rose black spot is caused by a fungus
This causes the leaves to develop purple or black spots
The leaves often turn yellow and fall off
Rose black spot causes the rate of photosynthesis to fall and reduces the rate of growth
Rose back spot can be spread by water or wind
3
Q
Treating rose black spot
A
Spray the plant with chemicals that kill the fungi (fungicides)
Remove the infected leaves and destroy them
