Agronomic characteristics, objective quantitative, metabolome and transcriptome analysis reveal the influence of fertilization treatments on fresh leaf characteristics and finished tea quality
文献类型： 外文期刊
作者： Yang, Liyue 1 ; Zhu, Xizhe 2 ; Yu, Ziming 4 ; Hu, Bicheng 1 ; Liu, Ping 2 ; Zhang, Fenglan 1 ; Chen, Ming 2 ; Wang, Jinjin 2 ; Huang, Youyi 4 ; Yuan, Haibo 2 ; Li, Yeyun 1 ; Hua, Jinjie 2 ;
作者机构： 1.Anhui Agr Univ, Natl Key Lab Tea Plant Germplasm Innovat & Resourc, 130 Changjiang West Rd, Hefei 230036, Anhui, Peoples R China
2.Chinese Acad Agr Sci, Tea Res Inst, 9 Meiling South Rd, Hangzhou 310008, Zhejiang, Peoples R China
3.Minist Agr & Rural Affairs, Key Lab Biol, Genet & Breeding Special Econ Anim & Plants, 9 Meiling South Rd, Hangzhou 310008, Zhejiang, Peoples R China
4.Huazhong Agr Univ, Natl Key Lab Germplasm Innovat & Utilizat Hort Cro, Wuhan 430070, Peoples R China
关键词： Fertilization; Green tea; Rutin; Theanine; Linalool; Phenylalanine conversion; Fatty acid metabolism
期刊名称：FOOD CHEMISTRY （ 影响因子：9.8； 五年影响因子：9.7 ）
ISSN： 0308-8146
年卷期： 2025 年 482 卷
页码：
收录情况： SCI
摘要： Fertilization is important for tea garden management and tea flavor improvement; however, the effects of different ratios of organic and chemical fertilizer on fresh tea leaf quality and finished tea flavor remain unclear. Therefore, four fertilization treatments were used to elucidate the underlying mechanisms. Fertilization treatments increased tea yield, and organic fertilizer increased bud density. Organic fertilizer reduced bitter rutin and gamma-aminobutyric acid content and phenol-to-ammonia ratio, and increased theanine, glutamic acid, quercetin-3-Oglucoside, kaempferol-3-O-rutinoside, and (-)-epicatechin-3-O-gallate content, resulting in umami taste and bright green color of green tea. Nine key differential volatiles were screened, and organic fertilizer markedly increased the levels of floral and fruity volatiles, including indole, decanal, linalool, geraniol, and cis-jasmone, resulting in lasting orchid aroma. Transcriptome analysis showed that organic fertilizer upregulated genes related to phenylalanine conversion and fatty acid metabolism, resulting in excellent tea quality. The results provide robust support for precise quality improvement in tea production.
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