Unknown

Dataset Information

0

Effects of Long-Term Nitrogen Fertilization on the Formation of Metabolites Related to Tea Quality in Subtropical China.


ABSTRACT: As a main agronomic intervention in tea cultivation, nitrogen (N) application is useful to improve tea yield and quality. However, the effects of N application on the formation of tea quality-related metabolites have not been fully studied, especially in long-term field trials. In this study, a 10-year field experiment was conducted to investigate the effect of long-term N application treatments on tea quality-related metabolites, their precursors, and related gene expression. Long-term N application up-regulated the expression of key genes for chlorophyll synthesis and promoted its synthesis, thus increasing tea yield. It also significantly increased the contents of total free amino acids, especially l-theanine, in fresh tea leaves, while decreasing the catechin content, which is conducive to enhancing tea liquor freshness. However, long-term N application significantly reduced the contents of benzyl alcohol and 2-phenylethanol in fresh tea leaves, and also reduced (E)-nerolidol and indole in withered leaves, which were not conducive to the formation of floral and fruity aroma compounds. In general, an appropriate amount of N fertilizer (225 kg/hm2) balanced tea yield and quality. These results not only provide essential information on how N application affects tea quality, but also provide detailed experimental data for field fertilization.

SUBMITTER: Chen Y 

PROVIDER: S-EPMC8000315 | biostudies-literature |

REPOSITORIES: biostudies-literature

Similar Datasets

| PRJNA821350 | ENA
| PRJEB24322 | ENA
| S-EPMC8910298 | biostudies-literature
| PRJEB7295 | ENA
| S-EPMC5299424 | biostudies-literature
| S-EPMC7371975 | biostudies-literature
| S-EPMC9490088 | biostudies-literature
| S-EPMC6121968 | biostudies-literature
| S-EPMC8119633 | biostudies-literature
| S-EPMC7838544 | biostudies-literature