Study on Characteristics and Lignification Mechanism of Postharvest Banana Fruit during Chilling Injury
文献类型： 外文期刊
作者： Xiao, Lu 1 ; Jiang, Xunyuan 1 ; Deng, Yicai 1 ; Xu, Kaihang 1 ; Duan, Xuewu 4 ; Wan, Kai 1 ; Tang, Xuemei 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Inst Qual Stand & Monitoring Technol Agroprod, Guangzhou 510640, Peoples R China
2.Minist Agr & Rural Affairs, Key Lab Testing & Evaluat Agroprod Safety & Qual, Guangzhou 510640, Peoples R China
3.Guangdong Prov Key Lab Qual & Safety Risk Assessme, Guangzhou 510640, Peoples R China
4.Chinese Acad Sci, Guangdong Prov Key Lab Appl Bot, South China Bot Garden, Guangzhou 510650, Peoples R China
关键词： banana peel; chilling symptoms; cell wall metabolism; lignification mechanism
期刊名称：FOODS （ 影响因子：5.2； 五年影响因子：5.5 ）
ISSN：
年卷期： 2023 年 12 卷 5 期
页码：
收录情况： SCI
摘要： The banana is prone to chilling injury (CI) at low temperature and showing a series of chilling symptoms, such as peel browning, etc. Lignification is a response to abiotic stress and senescence, which is an important manifestation of fruits and vegetables during chilling exposure. However, little is known about the lignification of bananas during low-temperature storage. Our study explored the characteristics and lignification mechanism of banana fruits during low-temperature storage by analyzing the changes of chilling symptoms, oxidative stress, cell wall metabolism, microstructures, and gene expression related to lignification. The results showed that CI inhibited post-ripening by effecting the degradation of the cell wall and starch and accelerated senescence by increasing O2- and H2O2 content. For lignification, Phenylalanine ammonia-lyase (PAL) might start the phenylpropanoid pathway of lignin synthesis. Cinnamoyl-CoA reductase 4 (CCR4), cinnamyl alcohol dehydrogenase 2 (CAD2), and 4-coumarate--CoA ligase like 7 (4CL7) were up-regulated to promote the lignin monomer's synthesis. Peroxidase 1 (POD1) and Laccase 3 (LAC3) were up-regulated to promote the oxidative polymerization of lignin monomers. These results suggest that changes of the cell wall structure and cell wall metabolism, as well as lignification, are involved in the senescence and quality deterioration of the banana after chilling injury.
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