OXYLIPINS THAT REGULATE THE SYMPTOM OF FRUIT MATURATION SUCH AS ETHYLENE PRODUCTION

Oxylipins are derived from lipoxygenase-dependent oxidation of fatty acid.
We investigated the effects of two kinds of oxylipins such as 9,10-Ketol-octadecadienoic acid (KODA) and jasmonates on fruit maturation including ethylene production in pre-climacteric apple fruit.
ACC oxidase activities and ethylene production in KODA-treated fruit were higher than those in untreated control fruit.
In addition, the expression of MdACO1 transcripts in the skin of KODA-treated fruit was higher than that in the untreated controls.
The applications of jasmonates at the pre-climacteric stage increased ACC synthase and ACC oxidase activities and ethylene production.
Furthermore, the expressions of ACC synthase (MdACS1) and ACC oxidase (MdACO1) increased in jasmonte treated-fruit.
These results suggest that oxylipins such as KODA and jasmonates may regulate fruit maturation through their influence on ethylene production.

Southeast Asia Symposium on Quality Management in Postharvest Systems and Asia Pacific Symposium on Postharvest Quality Management of Root and Tuber Crops

S. Kondo, M. Kittikorn, M. Yokoyama

jasmonic acid, α-ketol linolenic acid, Malus×domestica, oxylipins

https://doi.org/10.17660/ActaHortic.2013.989.2