在氧化应激下果的新陈代谢会影响植物细胞壁结构和机械特性
Piotr Mariusz Pieczywek1, Agata Leszczuk2, Magdalena Kurzyna-Szklarek2
1Institute of Agrophysics Polish Academy of Sciences, Lublin, Poland. p.pieczywek@ipan.lublin.pl.
Scientific reports
|August 24, 2023
概括
短时间的氧化应激通过改变细胞壁来改善果的保存. 这项研究揭示了果果细胞壁的分子变化,增强了坚固性并减少了收获后的疾病.
科学领域:
- 植物生理学 植物生理学
- 收获后的生物学
- 食品科学 食品科学 食品科学
背景情况:
- 短时间接触氧化应激对储存的水果有好处.
- 这些好处包括提高果的保存性,坚性和减少收获后疾病.
- 这些影响背后的分子机制需要进一步研究.
研究的目的:
- 研究短期氧化应激对果果的生理影响.
- 为了阐明由氧化应激诱导的果细胞壁中的分子变化.
- 评估对抗氧化剂能力和活性的影响.
主要方法:
- 来自三个品种的果受到了不同长度的低氧储存,以诱导无氧生态.
- 用细胞壁免疫标记和原子力显微镜来评估反应.
- 评估了果皮的抗氧化能力和活性.
主要成果:
- 短期的氧化应激诱导了特定的酶活性,导致果细胞壁的修饰.
- 观察到细胞壁的乳糖多糖重塑,提取的氧沙酸乳糖的尺寸和复杂性增加.
- 结构性细胞壁变化与延年模量增加相关,表明增强的压力刚度.
结论:
- 短期的氧化应激会在分子层面上显著改变果细胞壁.
- 这些修改有助于改善水果的坚硬性和保存.
- 这项研究为通过受控的应激暴露来提高收获后质量的机制提供了新的见解.
更多相关视频
相关概念视频
Responses to Heat and Cold Stress
13.6K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.6K
Plant Cell Wall
4.2K
Plant cells have a cell wall, a rigid outer covering that protects the cell and provides shape and support. During cell division, a mixture of enzymes, proteins, and glucose molecules is transported via vesicles to the center of the cell. These vesicles continuously fuse and build a cell plate between the dividing cells. As the cell plate matures, new polysaccharides are added to it to form the cell walls of the daughter cells. The predominant polysaccharide in the cell wall is cellulose, made...
4.2K
Cellulose and Pectic Polysaccharides
3.6K
Every plant cell has a cell wall that protects the cell, provides structural support, and gives the cell shape. Cellulose, the main structural component of the plant cell wall, makes up over 30% of plant matter. It is the most abundant organic compound on earth. Cellulose is an unbranched polysaccharide composed of linear chains of glucose molecules linked by β (1→4) glycosidic bonds.
As a cell matures, its cell wall specializes according to its type. For example, the...
As a cell matures, its cell wall specializes according to its type. For example, the...
3.6K


