Chitooligosaccharide accelerated wound healing in potato tubers by promoting the deposition of suberin polyphenols and lignin at wounds

被引:12
|
作者
Xie, Pengdong [1 ]
Yang, Yangyang [1 ]
Oyom, William [2 ]
Su, Tingting [1 ]
Tang, Yingbo [1 ]
Wang, Yi [1 ]
Li, Yongcai [1 ]
Prusky, Dov [3 ]
Bi, Yang [1 ]
机构
[1] Gansu Agr Univ, Coll Food Sci & Engn, Lanzhou 730070, Peoples R China
[2] North Carolina Agr & Tech State Univ, Food & Nutr Sci Program, Greensboro, NC USA
[3] Agr Res Org, Volcani Ctr, Dept Postharvest Sci, IL-7505101 Rishon Leziyyon, Israel
基金
中国国家自然科学基金; 国家重点研发计划;
关键词
Chitooligosaccharide; Wound healing; Phenylpropanoid metabolism; Suberin polyphenols; Lignin; DEFENSE RESPONSES; FUNGAL DISEASES; OLIGOCHITOSAN; FRUIT; INDUCTION; ACID; RESISTANCE; CHITOSAN;
D O I
10.1016/j.plaphy.2023.107714
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Chitooligosaccharide (COS) is a low molecular weight product of chitosan degradation. Although COS induces plant resistance by activating phenylpropanoid metabolism, there are few reports on whether COS accelerates wound healing in potato tubers by promoting the deposition of phenolic acids and lignin monomers at wounds. The results showed that COS activated phenylalanine ammonialyase and cinnamate 4-hydroxylase and promoted the synthesis of cinnamic, caffeic, p-coumaric, ferulic acids, total phenolics and flavonoids. COS activated 4-coumaric acid coenzyme A ligase and cinnamyl alcohol dehydrogenase and promoted the synthesis of sinapyl, coniferyl and cinnamyl alcohols. COS also increased H2O2 levels and peroxidase activity and accelerated the deposition of suberin polyphenols and lignin on wounds. In addition, COS reduced weight loss and inhibited lesion expansion in tubers inoculated with Fusarium sulfureum. Taken together, COS accelerated wound healing in potato tubers by inducing phenylpropanoid metabolism and accelerating the deposition of suberin polyphenols and lignin at wounds.
引用
收藏
页数:10
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