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Molecular Insights and Regulation Mechanisms of Tea Quality

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".

Deadline for manuscript submissions: 30 May 2025 | Viewed by 419

Special Issue Editor

Tea Science Institute, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
Interests: plant secondary metabolite analysis; GABA (y-Aminobutyric acid) accumulation in tea plant; plant gene functional characterization; correlation anslysis between geographical origins and multi-elements spatial distribution in soil–tea plantation ecosystems; quality control of chemicals and biosafety evaluation in tea
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Special Issue Information

Dear Colleagues,

Tea quality can be affected by the cultivation and breeding of tea plants; resistance breeding and the tree management of tea plants; molecular biology, the utilization of tea germplasm resources; and the ecological construction of tea gardens. The mechanism of heavy metal accumulation and transport in tea is also interesting, as it the effecting of acidic soil on tea plants. The distribution mechanism of tea plant nutrition in the "soil–root–stem–leaf" cycle and the stress mechanism of metal elements in tea plants an in acidic environment are directly related to tea quality regulation.

Dr. Xujun Zhu
Guest Editor

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Keywords

  • molecular ecology
  • spectroscopic techniques
  • tea quality
  • tea plant growth

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Published Papers (1 paper)

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Research

21 pages, 3939 KiB  
Article
The Proline Dehydrogenase Gene CsProDH1 Regulates Homeostasis of the Pro-P5C Cycle Under Drought Stress in Tea Plants
by Deng Deng, Qinqin Gao, Rou Zeng, Jie Jiang, Qiang Shen, Yuanchun Ma, Wanping Fang and Xujun Zhu
Int. J. Mol. Sci. 2025, 26(7), 3121; https://doi.org/10.3390/ijms26073121 - 28 Mar 2025
Viewed by 248
Abstract
The homeostasis of the proline-Δ1-pyrroline-5-carboxylate (Pro-P5C) cycle, mediated by proline dehydrogenase (ProDH), plays a critical role in plants in response to abiotic stresses. The biological function of gene CsProDH1 under drought stress and its effects on amino acid metabolism and photosynthesis [...] Read more.
The homeostasis of the proline-Δ1-pyrroline-5-carboxylate (Pro-P5C) cycle, mediated by proline dehydrogenase (ProDH), plays a critical role in plants in response to abiotic stresses. The biological function of gene CsProDH1 under drought stress and its effects on amino acid metabolism and photosynthesis through proline metabolism were investigated. Enzymatic characterization of the CsProDH1 protein was conducted in vitro. Overexpression of CsProDH1 aggravated plant stress, as evident by reduced photosynthetic efficiency and increased reactive oxygen species, which activated the Pro-P5C cycle. In contrast, silencing CsProDH1 enhanced plant drought resistance, increased proline accumulation, and protected photosynthesis. Studies indicate that exogenous amino acid application mitigates drought-induced physiological impairments in plants by maintaining cellular homeostasis, with particular efficacy observed in enhancing tea plant drought resilience through improved osmotic adjustment and antioxidant capacity. This study uncovers the significant role of CsProDH1 in plant drought resistance and its regulatory mechanism, offering potential gene targets and application strategies for enhancing crop drought resistance. Full article
(This article belongs to the Special Issue Molecular Insights and Regulation Mechanisms of Tea Quality)
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