title: Effect of MeJA treatment on polyamine, energy status and anthracnose rot of loquat fruit.
abstract: The effect of methyl jasmonate (MeJA) on changes in polyamines content and energy status and their relation to disease resistance was investigated. Freshly harvested loquat fruit were treated with 10 μmol l(-1) MeJA and wound inoculated with Colletotrichum acutatum spore suspension (1.0 × 10(5) spores ml(-1)) after 24h, and then stored at 20 °C for 6 days. MeJA treatment significantly reduced decay incidence. MeJA treated fruit manifested higher contents of polyamines (putrescine, spermidine and spermine) compared with the control fruit, during storage. MeJA treatment also maintained higher levels of adenosine triphosphate, and suppressed an increase in adenosine monophosphate content in loquat fruit. These results suggest that MeJA treatment may inhibit anthracnose rot by increasing polyamine content and maintaining the energy status.
authors.affiliation: College of Food Science and Technology, Nanjing Agricultural University, Weigang 1, Nanjing 210095, PR China; Nanjing Research Institute for Agricultural Mechanization, Ministry of Agriculture, Liuying 100, Nanjing 210014, PR China.
authors.forename: Shifeng
authors.initials: S
authors.lastname: Cao
authors.forename: Yuting
authors.initials: Y
authors.lastname: Cai
authors.forename: Zhenfeng
authors.initials: Z
authors.lastname: Yang
authors.forename: Daryl C
authors.initials: DC
authors.lastname: Joyce
authors.forename: Yonghua
authors.initials: Y
authors.lastname: Zheng
mesh_terms: D000085:Acetates / Q000494:pharmacology*; D000244:Adenosine Diphosphate / Q000378:metabolism; D000249:Adenosine Monophosphate / Q000378:metabolism; D000255:Adenosine Triphosphate / Q000378:metabolism; D020231:Colletotrichum; D003517:Cyclopentanes / Q000494:pharmacology*; D060467:Disease Resistance / Q000187:drug effects; D031983:Eriobotrya / Q000737:chemistry* / Q000187:drug effects / Q000382:microbiology; D005516:Food Microbiology; D005638:Fruit / Q000737:chemistry* / Q000187:drug effects / Q000382:microbiology; D054883:Oxylipins / Q000494:pharmacology*; D010937:Plant Growth Regulators / Q000494:pharmacology; D011700:Putrescine / Q000032:analysis*; D013095:Spermidine / Q000032:analysis*; D013096:Spermine / Q000032:analysis*
chemical_list: D000085:Acetates; D003517:Cyclopentanes; D054883:Oxylipins; D010937:Plant Growth Regulators; D013096:Spermine; D000249:Adenosine Monophosphate; D000244:Adenosine Diphosphate; D000255:Adenosine Triphosphate; C072239:methyl jasmonate; D013095:Spermidine; D011700:Putrescine
keywords: Anthracnose rot; Energy; Loquat; MeJA; Polyamines