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: Hataitip Nimitkeatkai, Masahiro Shishido, Katsuya Okawa, Hitoshi Ohara, Yusuke Ban, Masayuki Kita, Takaya Moriguchi, Hiromi Ikeura, Yasuyoshi Hayata, Satoru Kondo
• Journal: Journal of agricultural and food chemistry (J Agric Food Chem) Vol. 59 Issue 12 Pg. 6423-9 (Jun 22 2011) ISSN: 1520-5118 [Electronic] United States
• PMID: 21599017 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Cyclopentanes
• Ethylenes
• Oxylipins
• Plant Proteins
• Volatile Organic Compounds
• jasmonic acid
• ethylene
• Amino Acid Oxidoreductases
• 1-aminocyclopropane-1-carboxylic acid oxidase

Topics

• Amino Acid Oxidoreductases (genetics, metabolism)
• Colletotrichum (physiology)
• Cyclopentanes (metabolism, pharmacology)
• Ethylenes (biosynthesis)
• Gene Expression Regulation, Plant (drug effects)
• Oxylipins (metabolism, pharmacology)
• Plant Diseases (microbiology)
• Plant Proteins (genetics, metabolism)
• Prunus (enzymology, genetics, metabolism, microbiology)
• Volatile Organic Compounds (metabolism)