Integrated multi-omic analyses on yellow Flammulina filiformis cultivar reveal postharvest oxidative damage responses
文献类型： 外文期刊
作者： Fu, Yu 1 ; Tan, Hao 1 ; Wang, Bo 1 ; Peng, Weihong 1 ; Sun, Qun 2 ; Yu, Yang 1 ;
作者机构： 1.Sichuan Acad Agr Sci, Sichuan Inst Edible Fungi, Natl Local Joint Engn Lab Breeding & Cultivat Edi, Chengdu 610066, Peoples R China
2.Sichuan Univ, Coll Life Sci, Key Lab Bioresources & Ecoenvironm, Minist Educ, Chengdu 610064, Peoples R China
3.Jiangnan Univ, Sch Bioengn, Wuxi 214122, Jiangsu, Peoples R China
关键词： Flammulina filiformis; Genome sequencing; Transcriptome; Proteomics; Oxidative stress
期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：6.751； 五年影响因子：7.001 ）
ISSN： 0925-5214
年卷期： 2023 年 195 卷
页码：
收录情况： SCI
摘要： Yellow cultivars of Flammulina filiformis are prone to browning, which causes significant yearly loss. This study investigated the critical factors involved and revealed that oxygen plays an essential role in the browning pro-cess. Integrated multi-omic analyses, including genome sequencing, transcriptome profiling, and 4D label-free proteome quantification, were incorporated to dissect essential genes and metabolic pathways in the process of oxidative deterioration of the mushroom. The results revealed genes encoding browning-related enzymes in the F. filiformis genome, which are involved in the metabolism of tyrosine and the biosynthesis of phenyl-propanoid. Laccase 4, which is over-regulated in oxygen-treated samples compared to anaerobically treated ones by transcriptomic and proteomic analysis, and further confirmed by qRT-PCR and enzyme assays, could be a crucial polyphenol oxidase catalyzing the browning reaction. DNA damaging, proteolysis, and oxidative phos-phorylation accelerate cell senescence, contribute to cell integrity damage, and trigger the biosynthesis of melanin as a defective mechanism. These findings lay the foundations for postharvest preservation and future genetic breeding of F. filiformis.
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