Task: Class Definition Understanding (ontology: Food_Agriculture/Crop_Ontology)

Which of the following definitions best describes 'Leaf rust plant response'?

A. the concept in the plants caused by the agent Puccinia hordei.
B. the concept in the plants caused by the agent Drechslera graminea (helminthosporium gramineum).
C. Fusarium head blight (scab) spike response caused by the agent fusarium spp.
D. Leaf rust (brown rust) response in the plants caused by the agent Puccinia recondita.

Answer: Leaf rust (brown rust) response in the plants caused by the agent Puccinia recondita.