Effects of salicylic acid-grafted bamboo hemicellulose on gray mold control in blueberry fruit: The phenylpropanoid pathway and peel microbial community composition

被引：7

作者：

Du, Rongyu ^{[1
,3
]}

Deng, Jia ^{[1
,3
]}

Huang, Erbin ^{[1
,3
]}

Chen, Lin ^{[2
,3
]}

Tang, Junrong ^{[2
,3
]}

Liu, Yun ^{[1
]}

Shi, Zhengjun ^{[1
]}

Wang, Fang ^{[2
,3
]}

机构：

[1] Southwest Forestry Univ, Key Lab Forest Resources Conservat & Use Southwest, Minist Educ, Kunming 650224, Peoples R China

[2] Southwest Forestry Univ, Key Lab State Forestry Adm Biodivers Conservat Sou, Kunming 650224, Peoples R China

[3] Southwest Forestry Univ, Forestry Coll, Kunming 650224, Peoples R China

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2023年 / 251卷

基金：

中国国家自然科学基金;

关键词：

Bamboo hemicellulose; Salicylic acid; Graft copolymer; Blueberry fruit; Induced disease resistance; Microbial communities; ANTIOXIDANT CAPACITY; BOTRYTIS-CINEREA; PICHIA-MEMBRANAEFACIENS; POSTHARVEST BLUE; SHELF-LIFE; GREY MOLD; CHITOSAN; QUALITY; COMBINATION; METABOLISM;

D O I：

10.1016/j.ijbiomac.2023.126303

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Bamboo hemicellulose (HC) is a natural plant polysaccharide with good biocompatibility and biodegradability. But its poor antibacterial activity limits its application in fruits preservation. In this study, based on the good inducer of salicylic acid (SA) for plant diseases resistance, a novel antibacterial coating material was synthesized by grafting SA onto HC. The study aimed to investigate the synergistic effect of HC-g-SA on antibacterial ability, induces diseases resistance and microbial community composition of postharvest fruit. The graft copolymer treatment significantly reduced the incidence of gray mold caused by Botrytis cinerea in blueberries during storage (P < 0.05), and significantly stimulated the activity of key enzymes, including phenylalanine ammonialyase, chalcone isomerase, laccase, and polyphenol oxidase, leading to an increase in fungicidal compounds such as flavonoids, lignin, and total phenolics produced by the phenylpropanoid pathway in blueberries (P < 0.05). Moreover, the HC-g-SA coating altered bacterial and fungal community composition such that the abundance of postharvest fruit-peel pathogens was significantly reduced. After 8 days storage, the blueberry fruits treated by HC-g-SA had a weight loss rate of 12.42 +/- 0.85 %. Therefore, the HC-g-SA graft copolymer had a positive impact on the control of gray mold in blueberry fruit during postharvest storage.

引用

页数：12