RRC ID 11432
Author Iijima Y, Fujiwara Y, Tokita T, Ikeda T, Nohara T, Aoki K, Shibata D.
Title Involvement of ethylene in the accumulation of esculeoside A during fruit ripening of tomato (Solanum lycopersicum).
Journal J Agric Food Chem
Abstract The composition of glycoalkaloids in tomato fruit changes with ripening. However, it has not been clarified whether the accumulation of glycoalkaloids is controlled by the ripening-inducing phytohormone, ethylene. Here, we report the effect of ethylene on the accumulation of tomato fruit glycoalkaloids. We investigated the effect of exogenously applied ethylene. In response to ethylene treatment, the content of alpha-tomatine decreased, whereas the content of esculeoside A increased. Next, we analyzed the fruits of ripening mutants, rin, nor, and Nr. In fruits of these mutant lines, the level of accumulation of esculeoside A decreased, whereas alpha-tomatine accumulated to higher levels than in wild-type fruit. These results demonstrated that the esculeoside A accumulation was associated with production and perception of ethylene. Additionally, the accumulation profiles of the intermediate metabolites of esculeoside A biosynthesis in ripening mutant fruits suggest that a glycosylation step in the putative pathway from alpha-tomatine to esculeoside A depends on ethylene.
Volume 57(8)
Pages 3247-52
Published 2009-4-22
DOI 10.1021/jf8037902
PMID 19284799
MeSH Ethylenes / pharmacology* Fruit / drug effects* Fruit / growth & development* Fruit / metabolism Lycopersicon esculentum* / genetics Mutation Sapogenins / metabolism* Tomatine / analogs & derivatives Tomatine / metabolism
IF 4.192
Times Cited 25