Report

A MADS-Box Gene Necessary for Fruit Ripening at the Tomato Ripening-Inhibitor (Rin) Locus

See allHide authors and affiliations

Science  12 Apr 2002:
Vol. 296, Issue 5566, pp. 343-346
DOI: 10.1126/science.1068181

You are currently viewing the abstract.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution

Abstract

Tomato plants harboring theripening-inhibitor (rin) mutation yield fruits that fail to ripen. Additionally, rin plants display enlarged sepals and loss of inflorescence determinacy. Positional cloning of the rin locus revealed two tandem MADS-box genes (LeMADS-RIN andLeMADS-MC), whose expression patterns suggested roles in fruit ripening and sepal development, respectively. Therin mutation alters expression of both genes. Gene repression and mutant complementation demonstrate thatLeMADS-RIN regulates ripening, whereasLeMADS-MC affects sepal development and inflorescence determinacy. LeMADS-RINdemonstrates an agriculturally important function of plant MADS-box genes and provides molecular insight into nonhormonal (developmental) regulation of ripening.

  • * To whom correspondence should be addressed. E-mail: jjg33{at}cornell.edu

View Full Text