Salicylic acid enhances resistance in cowpea against Meloidogyne incognita

Abstract

Salicylic acid (10 mM) sprayed on cowpea leaves inoculated with Meloidogyne incognita reduced nematode
infection and promoted plant growth. Salicylic acid did not kill nematodes in an in vitro test and induced expression
and accumulation of pathogenesis related-1 protein in the leaves of sprayed plants. The presence of Tween-20
enhanced the effect of salicylic acid on the accumulation of pathogenesis related-1 protein.