HORTICULTURE

HORTICULTURE SCIENCE

PLANT DISEASES PATHOGENS THEIR SURVIVAL AND SPREAD

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When a plant responds to a pathogen by signalling other parts of the plant to prepare for infection by the pathogen.
A
Hypersensitive response
B
Systemic Acquired response
C
Barrier Defenses
D
Cytokine Storm
Explanation: 

Detailed explanation-1: -The hypersensitive response (HR) is a type of programmed cell death, which is part of the plant’s defence response against pathogen attack. In the best of cases, this strategy isolates the pathogens from nutrients during the early steps of infection, causing them to starve before they are able to cause damage.

Detailed explanation-2: -Simply put, the plant hypersensitive response (HR) is a rapid localized cell death that occurs at the point of pathogen penetration and is associated with disease resistance.

Detailed explanation-3: -When a plant cell detects the presence of a potential pathogen, enzymes catalyze an oxidative burst that produces highly reactive oxygen molecules capable of damaging the cells of invading organisms.

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