Isochorismate-based salicylic acid biosynthesis confers basal resistance to Fusarium graminearum in barley.

ABSTRACT: Salicylic acid (SA) plays an important role in signal transduction and disease resistance. In Arabidopsis, SA can be made by either of two biosynthetic branches, one involving isochorismate synthase (ICS) and the other involving phenylalanine ammonia-lyase (PAL). However, the biosynthetic pathway and the importance of SA remain largely unknown in Triticeae. Here, we cloned one ICS and seven PAL genes from barley, and studied their functions by their overexpression and suppression in that plant. Suppression of the ICS gene significantly delayed plant growth, whereas PAL genes, both overexpressed and suppressed, had no significant effect on plant growth. Similarly, suppression of ICS compromised plant resistance to Fusarium graminearum, whereas similar suppression of PAL genes had no signifi

SUBMITTER: Hao Q 

PROVIDER: S-EPMC6638154 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature