Induction of systemic disease resistance in Nicotiana benthamiana by the cyclodipeptides cyclo (l-Pro-l-Pro) and cyclo (d-Pro-d-Pro).

ABSTRACT: Cyclodipeptides, formed from two amino acids by cyclodehydration, are produced naturally by many organisms, and are known to possess a large number of biological activities. In this study, we found that cyclo (l-Pro-l-Pro) and cyclo (d-Pro-d-Pro) (where Pro is proline) could induce defence responses and systemic resistance in Nicotiana benthamiana. Treatment with the two cyclodipeptides led to a reduction in disease severity by Phytophthora nicotianae and Tobacco mosaic virus (TMV) infections compared with controls. Both cyclopeptides triggered stomatal closure, induced reactive oxygen species production and stimulated cytosolic calcium ion and nitric oxide production in guard cells. In addition, the application of cyclodipeptides significantly up-regulated the expression of the plant defe

SUBMITTER: Wu L 

PROVIDER: S-EPMC6638238 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature