Oxylipin affects ethylene metabolism and ethylene receptor gene expression levels in peach fruit (Prunus persica L.  Batsch). Issue 2 (4th March 2019)

• Record Type: Journal Article
• Authors: Kondo, Satoru; Osumi, Tomohiro; Sirinan, Suktawee; Wang, Shanshan; Saito, Takanori; Okawa, Katsuya; Ohara, Hitoshi
• Is Part Of: Journal of horticultural science & biotechnology. Volume 94:Issue 2(2019)
• Page Start: 201
• Page End: 209
• Publication Date: 2019-03-04
• Subjects: Oxylipins -- ethylene -- ACC -- PpETR1 -- PpCTR1 -- peach; Horticulture -- Periodicals; Plant biotechnology -- Periodicals; Biotechnology -- Periodicals; Biotechnology; Horticulture; Plant biotechnology; Periodicals; 635.05
• DOI: 10.1080/14620316.2018.1466663
• Languages: English
• ISSNs: 1462-0316

Abstract

ABSTRACT: The effects of two oxylipins – jasmonic acid (JA) and 9, 10-ketol-octadecadienoic acid (KODA) – on ethylene metabolism and ethylene receptor genes were examined in peach fruit ( Prunus persica L.) harvested at 88 days after full bloom (DAFB), in the pre-climacteric stage, and at 102 DAFB, at the beginning of the climacteric stage. Immediate post-harvest applications of either n -propyl dihydrojasmonate (PDJ) (a JA analog) or KODA stimulated ethylene production and 1-aminocyclopropane-1-carboxylate (ACC) concentrations in fruit that were harvested at 88 and 102 DAFB. KODA application significantly increased levels of ACC oxidase ( PpACO1 ) expression at 5 and 8 days after treatment (DAT) in 88-DAFB-harvested fruit, and at 1 DAT in 102-DAFB-harvested fruit. Expression levels of ethylene response factors ( PpERS1 ) were not influenced by either PDJ or KODA applications at 88 or 102 DAFB. In contrast, levels of ethylene-receptor-coding genes ( PpETR1 ) expression in 88-DAFB KODA-treated fruit increased at 8 and 14 DAT. Expression levels of constitutive triple response ( PpCTR1 ) in the untreated control fruit decreased with DAT in both 88- and 102-DAFB-harvested fruit. These results suggest that certain oxylipins may promote ethylene production in peach fruit, and that PpETR1 and PpCTR1 may be associated with the autocatalytic system of ethylene production.