PMID- 31780227 OWN - NLM STAT- MEDLINE DCOM- 20200218 LR - 20200218 IS - 1873-7072 (Electronic) IS - 0308-8146 (Linking) VI - 309 DP - 2020 Mar 30 TI - Potential of jasmonic acid (JA) in accelerating postharvest yellowing of broccoli by promoting its chlorophyll degradation. PG - 125737 LID - S0308-8146(19)31866-7 [pii] LID - 10.1016/j.foodchem.2019.125737 [doi] AB - Chlorophyll degradation is the main reason for postharvest yellowing of broccoli. To uncover the role of jasmonic acid (JA) on the degradation of chlorophyll, broccoli flowers were treated with exogenous methyl jasmonate (MeJA) and diethyldithiocarbamic acid (DIECA). We found a surge of endogenous JA content with the yellowing process, and a significant correlation between JA and chlorophyll content. MeJA treatments led to increased endogenous JA, increased allene oxide cyclase (AOC) activity, and enhanced expression of JA synthesis genes. MeJA caused a stronger reduction in the maximum quantum yield (Fv/Fm), fluorescence decline ratio (Rfd), and total chlorophyll content, advanced the peak of pheide a oxygenase (PAO) activity, and up-regulated the expression of chlorophyll degradation genes. The DIECA treatment resulted in lower endogenous levels of JA, and AOC and 12-oxo-phytodienoic acid reductase (OPR) activity. This study revealed that the potential role of JA on broccoli yellowing is to promote the chlorophyll degradation. CI - Copyright (c) 2019 Elsevier Ltd. All rights reserved. FAU - Fang, Huixin AU - Fang H AD - College of Food, Shenyang Agricultural University, No. 120 Dongling Road, Shenhe District, Shenyang City 110866, China. Electronic address: 1153601154@qq.com. FAU - Luo, Feng AU - Luo F AD - College of Food, Shenyang Agricultural University, No. 120 Dongling Road, Shenhe District, Shenyang City 110866, China. Electronic address: 403880675@qq.com. FAU - Li, Pengxia AU - Li P AD - Institute of Agricultural Products Processing, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014, China. Electronic address: pengxiali@126.com. FAU - Zhou, Qian AU - Zhou Q AD - College of Food, Shenyang Agricultural University, No. 120 Dongling Road, Shenhe District, Shenyang City 110866, China. Electronic address: 309504752@qq.com. FAU - Zhou, Xin AU - Zhou X AD - College of Food, Shenyang Agricultural University, No. 120 Dongling Road, Shenhe District, Shenyang City 110866, China. Electronic address: 573259732@qq.com. FAU - Wei, Baodong AU - Wei B AD - College of Food, Shenyang Agricultural University, No. 120 Dongling Road, Shenhe District, Shenyang City 110866, China. Electronic address: bdweisyau@163.com. FAU - Cheng, Shunchang AU - Cheng S AD - College of Food, Shenyang Agricultural University, No. 120 Dongling Road, Shenhe District, Shenyang City 110866, China. Electronic address: sailor_ch@163.com. FAU - Zhou, Hongsheng AU - Zhou H AD - Institute of Agricultural Products Processing, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210014, China. Electronic address: zhouhongsheng1234@163.com. FAU - Ji, Shujuan AU - Ji S AD - College of Food, Shenyang Agricultural University, No. 120 Dongling Road, Shenhe District, Shenyang City 110866, China. Electronic address: jsjsyau@syau.edu.cn. LA - eng PT - Journal Article DEP - 20191106 PL - England TA - Food Chem JT - Food chemistry JID - 7702639 RN - 0 (Acetates) RN - 0 (Cyclopentanes) RN - 0 (Oxylipins) RN - 1406-65-1 (Chlorophyll) RN - 6RI5N05OWW (jasmonic acid) RN - 900N171A0F (methyl jasmonate) RN - 99Z2744345 (Ditiocarb) RN - EC 1.13.- (Oxygenases) RN - EC 1.13.- (pheide a oxygenase) RN - EC 5.3.- (Intramolecular Oxidoreductases) RN - EC 5.3.99.6 (hydroperoxide isomerase) SB - IM MH - Acetates/pharmacology MH - Brassica/drug effects/*metabolism MH - Chlorophyll/chemistry/*metabolism MH - Cyclopentanes/chemistry/*metabolism/pharmacology MH - Ditiocarb/pharmacology MH - Gene Expression Regulation, Plant/drug effects MH - Intramolecular Oxidoreductases/metabolism MH - Oxygenases/metabolism MH - Oxylipins/chemistry/*metabolism/pharmacology OTO - NOTNLM OT - Broccoli OT - Chlorophyll OT - Jasmonic acid OT - Yellowing EDAT- 2019/11/30 06:00 MHDA- 2020/02/19 06:00 CRDT- 2019/11/30 06:00 PHST- 2019/07/16 00:00 [received] PHST- 2019/10/16 00:00 [revised] PHST- 2019/10/16 00:00 [accepted] PHST- 2019/11/30 06:00 [pubmed] PHST- 2020/02/19 06:00 [medline] PHST- 2019/11/30 06:00 [entrez] AID - S0308-8146(19)31866-7 [pii] AID - 10.1016/j.foodchem.2019.125737 [doi] PST - ppublish SO - Food Chem. 2020 Mar 30;309:125737. doi: 10.1016/j.foodchem.2019.125737. Epub 2019 Nov 6.