Which one of the following statements regarding the infection process of the fungal pathogen Fusarium graminearum in wheat is INCORRECT?
1
The fungus produces specialized structures to penetrate the plant tissue.
2
Fungal effector proteins are secreted into the host plant to manipulate its immune response.
3
An appressorium is formed to facilitate entry into the plant cells.
4
The pathogen primarily relies on necrotrophy to obtain nutrients from the host.