Abstract：
:Our previous study indicated that nanocomposite packaging material (Nano-PM) containing nano-Ag, nano-TiO2, nano-SiO2 and nanoattapulgite alleviated postharvest senescence of Flammulina velutipes by regulating respiration and energy metabolism. In this study, extracellular ATP (eATP) and programmed cell death (PCD) were employed as critical factors to further investigate the senescence mechanism of postharvest F. velutipes. Results demonstrated that Nano-PM delayed apyrase activity decrease and stimulated critical oxidative phosphorylation-related gene expression to inhibit eATP content increase, which is a crucial signaling molecule related to delaying senescence. The regulation of eATP resulted in alleviating PCD including chromosomal concentration, DNA fragmentation, Ca2+ influx, high caspase-1 activity and cytochrome c content and leading to high cell viability. Overall, Nano-PM alleviated PCD and postharvest senescence of F. velutipes by regulating extracellular ATP.
journal_name
Food Chemjournal_title
Food chemistryauthors
Shi C,Wu Y,Fang D,Ma N,Mariga AM,Hu Q,Yang Wdoi
10.1016/j.foodchem.2019.125702subject
Has Abstractpub_date
2020-03-30 00:00:00pages
125702eissn
0308-8146issn
1873-7072pii
S0308-8146(19)31830-8journal_volume
309pub_type
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