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87) the transduction pathway that activates systemic acquired resistance in plants is initially signaled by a) antisense rna. b) pfr phytochrome. c) salicylic acid. d) abscisic acid. e) red, but not far-red, light.

Respuesta :

The correct option is C :  Salicylic acid (SA) is a plant defense hormone that is essential for both local and systemic acquired resistance (SAR).

Systemic acquired resistance (SAR) is a type of induced resistance that occurs throughout a plant following exposure to elicitors from virulent, avirulent, or nonpathogenic microorganisms, as well as artificial chemical stimuli such as chitosan or salicylic acid (SA) 

Plant immune systems rely on their capacity to identify adversary chemicals, transmit signals, and respond defensively via processes involving several genes and their products.

Pathogens aggressively try to dodge and disrupt response pathways, favoring a decentralized, multicomponent immune system.

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