您好，欢迎访问广东省农业科学院 机构知识库！
广东省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Involvement of lignin deposition and cell wall degradation in stem senescence of Chinese flowering cabbage during storage

文献类型： 外文期刊

作者： Wang, Ling 1 ; Chen, Yulong 1 ; Wu, Meiting 1 ; Dai, Fanwei 1 ; Ye, Mingqiang 1 ; Chen, Feiping 1 ; Qi, Yingwei 1 ; Luo, Zheng 1 ; Huang, Hua 2 ;

作者机构： 1.Minist Agr & Rural Affairs, Sericultural & Agrifood Res Inst, Key Lab Funct Foods, Guangdong Key Lab Agr Prod Proc,Guangdong Acad Agr, Guangzhou 510610, Peoples R China

2.Guangdong Acad Agr Sci, Inst Fruit Tree Res, Key Lab South Subtrop Fruit Biol & Genet Resource, Guangdong Prov Key Lab Trop & Subtrop Fruit Tree R, Guangzhou 510640, Peoples R China

关键词： Chinese flowering cabbage; Stem senescence; Microstructure changes; Lignification; Pith cavity; Cell wall degradation

期刊名称：POSTHARVEST BIOLOGY AND TECHNOLOGY （ 影响因子：7.0； 五年影响因子：6.9 ）

ISSN： 0925-5214

年卷期： 2023 年 198 卷

页码：

收录情况： SCI

摘要： Chinese flowering cabbage is susceptible to leaf yellowing, however, little is known about stem senescence after harvest. Herein, changes in the microstructures, lignin and cell wall polysaccharide contents, and expression of their corresponding genes during the stem senescence of Chinese flowering cabbage were investigated. Anatomical and chemical analyses revealed that an increase in cell wall thickness was accompanied by lignin deposition around the vascular cells in the stem. Concurrently, the collapse of parenchyma cells developed gradually, which was probably related to the degradation of cell wall polysaccharides including pectin, hemi-cellulose, and cellulose, among others. The outer stem tissues, including epidermal cells to vascular cells, could be directly peeled, and the middle of the stem was found to contain prominent parenchyma cells as pith tissues. Activity of lignin biosynthesis-related enzymes of phenylalanine ammonia lyase (PAL), cinnamyl alcohol de-hydrogenase (CAD), and peroxidase (POD), and the expression of their corresponding genes BrPAL2/3/6, Br4CL1/4, BrCAD2/4/5/11, and BrPOD31/37 were higher in outer peeled tissues than in pith tissues. The enzyme activity of polygalacturonase and pectin methylesterase, and expression levels of the polysaccharide degradation-related genes BrXET2/3, BrCEL3, and BrMAN1/5 were higher in pith than in outer peeled tissues. These results suggest that lignin deposition around the vascular tissue, and cell wall degradation in pith tissues are involved in the stem senescence of Chinese flowering cabbage after harvest.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：广东省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台