转录组分析显示,臭氧处理延迟了果收获后的软化,通过调节细胞壁代谢来调节细胞壁代谢
Yan Wang1, Yaoxing Niu1, Lixia Ye1
1College of Food Science and Engineering, Northwest A&F University, Xianyang, Shaanxi, China.
Journal of food science
|February 19, 2024
概括
臭氧处理通过调节细胞壁代谢和酶活性,有效地减少了果的软化. 这延长了收获后的寿命,延迟了水果的衰老,并保持了坚硬性.
科学领域:
- 植物生理学 植物生理学
- 生物化学 生物化学
- 收获后生物学 收获后生物学
背景情况:
- 果的成熟和衰老影响经济价值.
- 了解收获后的变化对于延长水果的保质期至关重要.
研究的目的:
- 研究臭氧对果细胞壁代谢的影响.
- 确定臭氧在调节水果软化和收获后寿命方面的作用.
主要方法:
- 转录组分析以确定基因表达.
- 生物化学测试用于测量细胞壁成分和酶活性.
- 定量聚合酶链反应 (qPCR) 用于基因验证.
主要成果:
- 臭氧处理降低了细胞壁修饰酶的活性.
- 增加原始pectin和纤维素含量,减少可溶性pectin.
- 延迟细胞壁 mesosphere 的降解.
- 确定了20个与pectinesterase (PE) 相关的基因.
- 臭氧调节的基因参与细胞壁代谢,保持水果的质量.
- 臭氧与酶协同作用,抑制细胞壁降解,改变细胞壁超结构,降低果的硬度.
结论:
- 臭氧处理有效地延迟了果的成熟和软化.
- 细胞壁代谢和特定的基因表达 (例如PE) 是臭氧干预的关键目标.
- 臭氧为延长果收获后寿命和保持质量提供了一个有希望的策略.
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