Report

A Tomato Cysteine Protease Required for Cf-2-Dependent Disease Resistance and Suppression of Autonecrosis

Science  26 Apr 2002:
Vol. 296, Issue 5568, pp. 744-747
DOI: 10.1126/science.1069288

You are currently viewing the abstract.

View Full Text

Via your Institution

Log in through your institution

Log in through your institution


Abstract

Little is known of how plant disease resistance (R) proteins recognize pathogens and activate plant defenses. Rcr3 is specifically required for the function of Cf-2, aLycopersicon pimpinellifolium gene bred into cultivated tomato (Lycopersicon esculentum) for resistance toCladosporium fulvum. Rcr3 encodes a secreted papain-like cysteine endoprotease. Genetic analysis shows Rcr3 is allelic to the L. pimpinellifolium Ne gene, which suppresses the Cf-2–dependent autonecrosis conditioned by its L. esculentum allele, ne (necrosis).Rcr3 alleles from these two species encode proteins that differ by only seven amino acids. Possible roles of Rcr3 in Cf-2–dependent defense and autonecrosis are discussed.

  • * To whom correspondence should be addressed. E-mail jonathan.jones{at}bbsrc.ac.uk

View Full Text

Cited By...