光强度对菜生长和黄素合成的影响
Yanmei Qin1, Xuanxuan Liu1, Chunyan Li1
1College of Horticulture, Sichuan Agricultural University, Chengdu, China.
Frontiers in plant science
|January 31, 2024
概括
优化水培菜的光强度是关键. 光强度为200μmol·m-2·s-1促进菜的生长,生物质,并提高营养质量,包括有益的黄酸盐.
科学领域:
- 园艺科学 园艺科学
- 植物生理学 植物生理学
- 营养生物化学 营养生物化学
背景情况:
- 光是影响植物生长和在受控环境中的发展的关键环境因素.
- 了解最佳光照条件对于最大限度地提高水培作物的产量和营养价值至关重要.
研究的目的:
- 研究不同光强度对水培菜生长,营养质量和黄酸积累的影响.
- 为了确定在LED照明下增强菜生产和营养合成的最佳光强度.
主要方法:
- 用水培养方式种植的菜受到四种不同的LED光强度 (40, 100, 200, 300μmol·m-2·s-1).
- 在三个收获时间 (15,30,45天) 分析了生长参数,营养成分 (叶绿素,胡卜素,维生素C,纤维素) 和黄含量.
- 测量了与类生物合成 (PAL,CHS,CHI,ANS,FNS) 和基因表达 (Ag3GT,AgFNS) 相关的酶活性.
主要成果:
- 菜植物的高度和地表生物量增加,光强度高达200μmol·m-2·s-1.
- 光强度为200μmol·m-2·s-1显著增强了叶绿素,胡卜素,总,维生素C,纤维素,总黄素和原蛋白含量.
- 与阿皮基宁合成相关的酶活动和基因表达达到200μmol·m-2·s-1的峰值,而安东氨酸合成达到300μmol·m-2·s-1的峰值.
结论:
- 200μmol·m-2·s-1的光强度是促进水培菜生长和增强其营养特征的最佳,特别是黄酸含量.
- 特定的光强度可以量身定制,以优化所需化合物的积累,如菜中的apigenin.
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