Abstract
Anji Baicha is produced from 'Baiye 1', which is an albino cultivar of tea (Camellia sinensis). It is highly prized for its unique characteristic of accumulating high levels of free amino acids, especially theanine. Conventional fertilization practices used to maintain leaf albinism often compromise yield and quality. Therefore, the present study used an optimized fertilization strategy, combining adjusted N-P-K ratios with Mg supplementation, to enhance plant nutrition while preserving the desired albinism feature. Field experiments were carried out to compare farmers' practice (FFP), optimized N-P-K (OPT), and OPT+Mg. Compared with FFP, OPT, and OPT+Mg treatment significantly increased tea yield by 22%–29% and the amino acid (including theanine) content in new shoots (p > 0.05), while successfully maintaining leaf albinism. They also improved soil nutrient availability, microbial diversity, and enhanced soil quality by 19.4%–75%. Both OPT and OPT+Mg treatments reshaped soil bacterial and fungal communities, enriching specific beneficial microbial taxa. Random Forest predictive analysis indicated that bacterial biomarkers exerted a greater influence on tea yield and amino acid content than fungal biomarkers, accounting for 57% and 51.4% of the predicted variance for yield and amino acids, respectively (compared to 43% and 48.6% for fungi). Acidicaldus and Deniquelata were identified as key biomarkers for yield, while Cupriavidus and Aspergillus were key biomarkers associated with variation in amino acid content. Thus, findings demonstrate that adequate N fertilization is crucial for optimal growth of this albino tea cultivar, and Mg supplementation under optimal N supply provides synergistic advantages. The study establishes a scientific framework for the sustainable production of Anji Baicha.
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Claims 13
Claim · model-written summary
OPT and OPT+Mg increased tea yield by 22%–29% compared with FFP.
Verbatim
e0“Compared with FFP, OPT, and OPT+Mg treatment significantly increased tea yield by 22%–29%”
Claim · model-written summary
OPT and OPT+Mg increased amino acid content, including theanine, in new tea shoots, though the reported p value was greater than 0.05.
Verbatim
e0“OPT, and OPT+Mg treatment significantly increased tea yield by 22%–29% and the amino acid (including theanine) content in new shoots (p > 0.05)”
e1“Compared with FFP”
Claim · model-written summary
OPT and OPT+Mg maintained leaf albinism.
Not reportedDirection
Verbatim
e0“while successfully maintaining leaf albinism”
e1“OPT, and OPT+Mg treatment”
e2“increased tea yield”
Claim · model-written summary
OPT and OPT+Mg improved soil nutrient availability.
Verbatim
e0“They also improved soil nutrient availability, microbial diversity, and enhanced soil quality by 19.4%–75%”
e1“OPT, and OPT+Mg treatment”
e2“increased tea yield”
e3“Compared with FFP”
Claim · model-written summary
OPT and OPT+Mg improved soil microbial diversity.
Verbatim
e0“They also improved soil nutrient availability, microbial diversity, and enhanced soil quality by 19.4%–75%”
e1“OPT, and OPT+Mg treatment”
e2“increased tea yield”
e3“Compared with FFP”
Claim · model-written summary
OPT and OPT+Mg enhanced soil quality by 19.4%–75%.
Verbatim
e0“enhanced soil quality by 19.4%–75%”
e1“OPT, and OPT+Mg treatment”
e2“increased tea yield”
e3“Compared with FFP”
Claim · model-written summary
OPT and OPT+Mg reshaped soil bacterial and fungal communities and enriched beneficial microbial taxa.
- Taxon
- teae1
- Treatment
- OPT and OPT+Mg treatmentse0
- Outcome
- soil bacterial and fungal communitiese0
- Comparator
- FFPe2
Not reportedDirection
Verbatim
e0“Both OPT and OPT+Mg treatments reshaped soil bacterial and fungal communities, enriching specific beneficial microbial taxa”
e1“increased tea yield”
e2“Compared with FFP”
Claim · model-written summary
Bacterial biomarkers accounted for 57% of predicted variance in tea yield, more than fungal biomarkers at 43%.
- Taxon
- teae0
- Interactor
- bacterial biomarkerse0symbiont
- Outcome
- tea yielde0
- Value
- 57%e0
- Qualifier
- 43%e0
- Comparator
- fungal biomarkerse0
Not reportedDirection
Verbatim
e0“bacterial biomarkers exerted a greater influence on tea yield and amino acid content than fungal biomarkers, accounting for 57% and 51.4% of the predicted variance for yield and amino acids, respectively (compared to 43% and 48.6% for fungi)”
Claim · model-written summary
Bacterial biomarkers accounted for 51.4% of predicted variance in amino acids, more than fungal biomarkers at 48.6%.
- Taxon
- teae0
- Interactor
- bacterial biomarkerse0symbiont
- Outcome
- amino acid contente0
- Value
- 51.4%e0
- Qualifier
- 48.6%e0
- Comparator
- fungal biomarkerse0
Not reportedDirection
Verbatim
e0“bacterial biomarkers exerted a greater influence on tea yield and amino acid content than fungal biomarkers, accounting for 57% and 51.4% of the predicted variance for yield and amino acids, respectively (compared to 43% and 48.6% for fungi)”
Claim · model-written summary
Acidicaldus and Deniquelata were identified as yield biomarkers.
- Taxon
- teae1
- Interactor
- AcidicaldusAcidicalduse0symbiont
- Second interactor
- DeniquelataDeniquelatae0symbiont
- Outcome
- yielde0
Not reportedDirection
Verbatim
e0“Acidicaldus and Deniquelata were identified as key biomarkers for yield”
e1“increased tea yield”
Claim · model-written summary
Cupriavidus and Aspergillus were biomarkers associated with amino acid content variation.
- Taxon
- teae1
- Interactor
- CupriavidusCupriaviduse0symbiont
- Second interactor
- Aspergillus
Aspergilluse0symbiont - Outcome
- variation in amino acid contente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cupriavidus and Aspergillus were key biomarkers associated with variation in amino acid content”
e1“increased tea yield”
Claim · model-written summary
Adequate N fertilization was judged crucial for optimal growth of albino tea.
Verbatim
e0“adequate N fertilization is crucial for optimal growth of this albino tea cultivar”
Claim · model-written summary
Mg supplementation under optimal N supply was judged to provide synergistic advantages.
Verbatim
e0“Mg supplementation under optimal N supply provides synergistic advantages”
e1“increased tea yield”
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.