title: Effect of jasmonates on ethylene biosynthesis and aroma volatile emission in Japanese apricot infected by a pathogen (Colletotrichum gloeosporioides).
abstract: The effects of the application of the jasmonic acid derivative n-propyl dihydrojasmonate (PDJ) on ethylene biosynthesis, volatile compounds, and endogenous jasmonic acid (JA) and methyl jasmonate (MeJA) were examined in Japanese apricot (Prunus mume Sieb.) infected by a pathogen (Colletotrichum gloeosporioides). The fruit were dipped into 0.4 mM PDJ solution before inoculation with the pathogen and stored at 25 °C for 6 days. The inoculation induced an increase in 1-aminocyclopropane-1-carboxylic acid (ACC), ethylene, JA, and MeJA. In contrast, PDJ application reduced the endogenous JA, MeJA, and ethylene production and expression of the ACC oxidase gene (PmACO1) caused by the pathogen infection. The lesion diameter with C. gloeosporioides decreased upon PDJ application. The alcohol, ester, ketone, and lactone concentrations and alcohol acyltransferase (AAT) activity increased in the pathogen-infected fruit, but were decreased by PDJ application. These results suggest that PDJ application might influence ethylene production through PmACO1 and that aroma volatile emissions affected by pathogen infection can be correlated with the ethylene production, which is mediated by the levels of jasmonates.
authors: Graduate School of Horticulture, Chiba University, Chiba 271-8510, Japan.
authors: Hataitip
authors: H
authors: Nimitkeatkai
authors: Masahiro
authors: M
authors: Shishido
authors: Katsuya
authors: K
authors: Okawa
authors: Hitoshi
authors: H
authors: Ohara
authors: Yusuke
authors: Y
authors: Ban
authors: Masayuki
authors: M
authors: Kita
authors: Takaya
authors: T
authors: Moriguchi
authors: Hiromi
authors: H
authors: Ikeura
authors: Yasuyoshi
authors: Y
authors: Hayata
authors: Satoru
authors: S
authors: Kondo