In pest control, what does 'induced resistance' imply?

Induced resistance refers to a plant's enhanced ability to defend itself against pathogens as a result of previous infections or exposure to pathogens. This process typically occurs when a plant recognizes a pathogen or pathogen-associated signals, prompting it to activate its defense responses even before being attacked again. This phenomenon can lead to a heightened state of immunity, allowing the plant to respond more efficiently to subsequent pathogen challenges.

The mechanism behind this includes the production of defense-related proteins and compounds that enhance the plant's overall ability to resist infections. Induced resistance is a crucial concept in integrated pest management as it highlights the importance of a plant's ability to adapt and bolster its defenses independently, reducing reliance on chemical treatments.

The other options presented do not accurately reflect the concept of induced resistance. Genetic modification refers to the intentional alteration of a plant's genome to express certain traits, which differs from the reactive nature of induced resistance. Similarly, naturally occurring resistance is inherent in plant species and does not rely on previous infections to activate, while resistance obtained through chemical applications involves external intervention, rather than the plant's own adaptive mechanisms.