From the Academy: Colloquium review. Unique characteristics of Xanthomonas oryzae pv. oryzae AvrXa21 and implications for plant innate immunity.

ABSTRACT: This article provides a brief overview of some of the major concepts and molecular features of plant and animal innate immune systems. The rice pathogen recognition receptor, XA21, confers resistance to Xanthomonas oryzae pv. oryzae strains producing the AvrXa21 elicitor. Xa21 codes for a receptor-like kinase consisting of an extracellular leucine-rich repeat domain, a transmembrane domain, and a cytoplasmic kinase domain. We show that AvrXa21 activity requires the presence of rax (required for AvrXa21) A, raxB, and raxC genes that encode components of a type one secretion system. In contrast, an hrpC(-) strain deficient in type three secretion maintains AvrXa21 activity. Xanthomonas campestris pv. campestris can express AvrXa21 activity if raxST, encoding a putative sulfotransferase, and

SUBMITTER: Lee SW 

PROVIDER: S-EPMC1693675 | biostudies-literature | 2006 Dec

REPOSITORIES: biostudies-literature