Plant systemic acquired resistance to insect and a cross-talk between pathogen and insect resistance signal molecules;

One is systemic acquired resistance(SAR)which induced by plant pathogenic microorganism and connected with the signaling molecular salicylic acid(SA),the other is induced systemic resistance(ISR)which induced by nonpathogenic microorganism and connected with the signaling molecular jasmonic acid(JA).

The Arabidopsis NPR1 gene plays an important role in activating various plant defense responses,including expression of the pathogenesis-related genes and systemic acquired resistance.

The research advances on plant systemic acquired resistance in recent years were introduced;the physiological and biochemical mechanisms were reviewed;and the characteristic of plant systemic acquired resistance(SAR),commercial inducers and the application of SAR in plant disease control were also elaborated in this article.

Elicitins,the small proteins secreted by Phytophthora and Pythium species,havebeen shown to induce a hypersensitive reaction and systemic acquired resistance in someplants.

Increases in endogenous SA levels correlates with expression of defense genes and development of pathogen resistance,indicating that SA is required in the expession of systemic acquired resistance (SAR) but is not the only factor.

oryzae (XOO) 75-1(avirulent),on induced systemic acquired resistance to XOO,metabolism of active oxygen species (AOS) in treated leaves and ultrastructure in leaves challenged by XOO 76-25(virulent).

In order to study the ability of benzothiadiazole induced systemic acquired resistance in wheat against Blumeria graminis f.