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 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.
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Claims 7
Claim · model-written summary
CsProDH1 overexpression reduced photosynthetic efficiency under stress.
- Taxon
- Tea Plantst0
- Treatment
- Overexpression of CsProDH1e0
- Gene
- CsProDH1e0
- Outcome
- photosynthetic efficiencye0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“Overexpression of CsProDH1 aggravated plant stress, as evident by reduced photosynthetic efficiency and increased reactive oxygen species”
t0“Tea Plants”
Claim · model-written summary
CsProDH1 overexpression increased reactive oxygen species.
- Taxon
- Tea Plantst0
- Treatment
- Overexpression of CsProDH1e0
- Gene
- CsProDH1e0
- Outcome
- reactive oxygen speciese0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Overexpression of CsProDH1 aggravated plant stress, as evident by reduced photosynthetic efficiency and increased reactive oxygen species”
t0“Tea Plants”
Claim · model-written summary
CsProDH1 overexpression activated the Pro-P5C cycle.
Verbatim
e0“increased reactive oxygen species, which activated the Pro-P5C cycle”
e1“Overexpression of CsProDH1 aggravated plant stress”
t0“Tea Plants”
Claim · model-written summary
Silencing CsProDH1 enhanced drought resistance.
- Taxon
- Tea Plantst0
- Treatment
- silencing CsProDH1e0
- Gene
- CsProDH1e0
- Outcome
- plant drought resistancee0
- Direction
- enhancede0
Not reportedComparator
Verbatim
e0“silencing CsProDH1 enhanced plant drought resistance, increased proline accumulation, and protected photosynthesis”
t0“Tea Plants”
Claim · model-written summary
Silencing CsProDH1 increased proline accumulation.
- Taxon
- Tea Plantst0
- Treatment
- silencing CsProDH1e0
- Gene
- CsProDH1e0
- Outcome
- proline accumulatione0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“silencing CsProDH1 enhanced plant drought resistance, increased proline accumulation, and protected photosynthesis”
t0“Tea Plants”
Claim · model-written summary
Silencing CsProDH1 protected photosynthesis.
- Taxon
- Tea Plantst0
- Treatment
- silencing CsProDH1e0
- Gene
- CsProDH1e0
- Outcome
- photosynthesise0
- Direction
- protectede0
Not reportedComparator
Verbatim
e0“silencing CsProDH1 enhanced plant drought resistance, increased proline accumulation, and protected photosynthesis”
t0“Tea Plants”
Claim · model-written summary
Exogenous amino acid application mitigated drought-induced physiological impairment and enhanced tea plant drought resilience through osmotic adjustment and antioxidant capacity.
- Taxon
- tea plante0
- Treatment
- exogenous amino acid applicatione0
- Outcome
- tea plant drought resiliencee0
- Direction
- enhancinge0
- Qualifier
- improved osmotic adjustment and antioxidant capacitye0
Not reportedComparator
Verbatim
e0“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”
The same questions in other papers
loss of function · tolerance: abiotic · Camellia sinensis (black tea)Positive and negative results
2 papers in the same direction as this paper · 7 in the opposite direction
- negative
- negative
- negative
6 papers more in this group
See all 10 papers →loss of function · physiology: osmolytes · Camellia sinensis (black tea)Results agree
1 paper in the same direction as this paper
- positive
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.