中国农业科学 ›› 2026, Vol. 59 ›› Issue (5): 1070-1086.doi: 10.3864/j.issn.0578-1752.2026.05.012

• 园艺 • 上一篇    下一篇

基于广靶代谢组学分析藏葱和细香葱营养品质及黄酮类代谢产物差异

岳丽昕1(), 王清华1, 王振宝1, 尼玛琼吉2, 刘泽洲1, 孔素萍1, 张立峰1, 高莉敏1()   

  1. 1 山东省农业科学院蔬菜研究所/农业农村部黄淮设施园艺工程重点实验室/山东省大宗露地蔬菜育种重点实验室,济南 250100
    2 日喀则国家农业科技园区管理委员会,西藏日喀则 857000
  • 收稿日期:2025-10-13 接受日期:2025-12-02 出版日期:2026-03-01 发布日期:2026-03-06
  • 通信作者:
    高莉敏,E-mail:
  • 联系方式: 岳丽昕,E-mail:yuelixin.happy@163.com。
  • 基金资助:
    山东省自然科学基金(ZR2024QC101); 国家重点研发计划(2023YFD1600200); 山东省重点研发计划(2024LZGC014); 日喀则市重点研发项目

Widely Targeted Metabolomics-Based Analysis of the Differences in Tibetan Bunching Onion and Chive on Nutritional Quality and Flavonoid Metabolites

YUE LiXin1(), WANG QingHua1, WANG ZhenBao1, NIMAQIONGJI2, LIU ZeZhou1, KONG SuPing1, ZHANG LiFeng1, GAO LiMin1()   

  1. 1 Institute of Vegetables, Shandong Academy of Agricultural Sciences/Key Laboratory of Huang Huai Protected Horticulture Engineering, Ministry of Agriculture and Rural Affairs/Shandong Key Laboratory of Bulk Open-Field Vegetable Breeding, Ji’nan 250100
    2 Investment Promotion of Shigatse National Agricultural Science and Technology Park, Shigatse 857000, Xizang
  • Received:2025-10-13 Accepted:2025-12-02 Published:2026-03-01 Online:2026-03-06

摘要:

【目的】 探究藏葱和细香葱的农艺性状、营养品质及代谢组分的差异,揭示其特有的营养代谢特征,为挖掘藏葱特色资源价值、推动西藏特色蔬菜的高值化利用与品种改良提供科学依据。【方法】 以西藏特色蔬菜资源藏葱与我国优异分葱资源细香葱为研究对象,通过生理生化分析,比较其农艺性状与营养品质差异;采用广泛靶向代谢组学技术分析代谢谱,以“VIP>1,且FC≥2或FC≤0.5”为标准筛选差异代谢物,并进行KEGG代谢通路富集分析。【结果】 藏葱和细香葱在假茎形态、表皮颜色、株高、假茎长、叶片长和单株重等农艺性状上存在显著差异。营养品质分析发现,在藏葱中,干物质、游离氨基酸、丙酮酸和粗纤维含量高于细香葱,而可溶性固形物、可溶性糖、维生素C含量和糖酸比则显著低于细香葱。基于广泛靶向代谢组学技术,共鉴定出13类2 014种代谢物,主要以黄酮类、脂质和生物碱为主。多元统计分析共鉴定出1 012种差异代谢物,其中,583种上调表达,429种下调表达。KEGG通路富集分析表明,差异代谢物显著富集于类黄酮生物合成相关通路,主要包括黄酮与黄酮醇生物合成、花青素苷生物合成,以及山柰酚苷元Ⅰ与槲皮素苷元Ⅰ的生物合成途径。通过构建黄酮类化合物代谢合成网络和比较代谢物相对含量,藏葱与细香葱在下游黄酮类化合物代谢产物积累上具有显著的种间差异,其多样性主要源于共同前体物质二氢山柰酚的分支转化,该过程分别导向黄酮醇类(山柰酚和槲皮素)与花青素类(矢车菊素和飞燕草素)等不同次生代谢产物的合成与积累。【结论】 藏葱与细香葱在农艺性状、营养品质和代谢物积累上差异显著,藏葱干物质、氨基酸含量高,风味辛辣浓郁,质地粗,耐贮藏;细香葱则糖类、维生素C丰富,口感清甜鲜嫩。其黄酮类合成通路分化关键源于二氢山柰酚的分支转化,可生成黄酮醇与花青素等多样代谢产物。

关键词: 葱属, 叶片, 营养品质, 广靶代谢组, 黄酮类化合物, 代谢差异

Abstract:

【Objective】 The purpose of this study is to investigate the differences in agronomic traits, nutritional quality, and metabolic components between Tibetan bunching onion and chive to elucidate their unique nutritional and metabolic characteristics, thereby exploring their distinctive resource value. These findings will provide a scientific basis for the exploitation of the unique resource value of Tibetan bunching onion, as well as for the promotion of the high-value utilization and varietal improvement of specialty vegetables in Xizang.【Method】 The materials used in this study were Tibetan bunching onion and chive. A systematic comparison of their agronomic traits and nutritional quality was conducted through physiological and biochemical analyses. The metabolic profiles of the subjects were analyzed using widely targeted metabolomics, with differential metabolites being identified using the criteria of VIP>1 and FC≥2 or FC≤0.5. Subsequent KEGG pathway enrichment analysis was performed to elucidate the impacted metabolic pathways.【Result】 The results showed that there were significant differences between the two species in terms of pseudostem morphology, epidermal color, plant height, pseudostem length, leaf length, and single plant weight. Nutritional quality analysis showed that the dry matter, free amino acid, pyruvic acid, and crude fiber contents of Tibetan bunching onion were higher than those of chive, while the soluble solids, soluble sugars, vitamin C content, and sugar-acid ratio were significantly lower. Utilizing the widely targeted metabolomics-based technology, a total of 2 014 metabolites from 13 distinct classes were identified, predominantly comprising flavonoids, lipids, and alkaloids. Then 1 012 differential metabolites were identified by multivariate statistical analysis, of which 583 were up-regulated and 429 were down-regulated. KEGG pathway enrichment analysis demonstrated that the differential metabolites were significantly enriched in pathways associated with flavonoid biosynthesis, primarily encompassing the biosynthesis of flavones and flavanols, anthocyanin glycosides, and the biosynthetic pathways of kaempferol aglycone Ⅰ and quercetin aglycone Ⅰ. By constructing a flavonoid anabolic network and comparing the relative contents of metabolites, significant interspecific divergence in downstream flavonoid metabolite accumulation between Tibetan bunching onion and chive was revealed. The diversity was mainly due to the branch transformation of the common precursor dihydrokaempferol, which led to the synthesis and accumulation of different secondary metabolites, including flavonols (kaempferol and quercetin) and anthocyanins (cyanidin and delphinidin).【Conclusion】 Significant differences were observed in the agronomic traits, nutritional quality, and metabolite accumulation of the two Allium species. The Tibetan bunching onion had a high dry matter and amino acid content, a spicy and rich flavor, a coarse texture, and good storage resistance. In contrast, the chive was rich in sugars and vitamin C, and tasted sweet and fresh. Differentiation of the flavonoid synthesis pathway is mainly due to the transformation of dihydrokaempferol branches, which produce various metabolites such as flavanols and anthocyanins.

Key words: Allium, leaf, nutritional quality, widely targeted metabolomics, flavonoids, metabolic differences