SlTDC1 Overexpression Promoted Photosynthesis in Tomato under Chilling Stress by Improving CO2 Assimilation and Alleviating Photoinhibition
Abstract
:1. Introduction
2. Results and Discussion
2.1. Electrolyte Leakage Rate and H2O2 Content
2.2. Photosynthetic Parameter
2.3. Gene Expression and Photosynthetic Enzyme Activity
2.4. Chlorophyll Content and Chloroplast Ultrastructure
2.5. Carbon Metabolism
2.6. Photoinhibition
2.7. Electron Transport and Energy Distribution
2.8. Photosynthesis-Related Protein Level
3. Materials and Methods
3.1. Plant Material and Growth Conditions
3.2. Plant Transformation
3.3. Determination of MT Content
3.4. Determination of EL, H2O2, and Chlorophyll Content
3.5. Determination of Chloroplast Ultrastructure
3.6. Determination of Gas-Exchange Parameters and Photosynthetic Enzyme Activity
3.7. Determination of Chlorophyll Fluorescence Parameters and OJIP Curve
3.8. Determination of Sugar Content and Related Enzyme Activities
3.9. Determination of Gene Expression and Protein Level
3.10. Statistical Analysis
4. Discussion
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Stress Days (d) | Strains | Asat (μmol·m−2·s−1) | Total Sugar Content (mg·g−1DW) | Sucrose Content (mg·g−1DW) | Glucose Content (mg·g−1DW) | Fructose Content (mg·g−1DW) | Starch Content (mg·g−1DW) |
---|---|---|---|---|---|---|---|
0 d | WT | 25.53 ± 1.28 b | 234.30 ± 3.50 b | 74.26 ± 1.35 b | 6.61 ± 0.16 b | 5.49 ± 0.05 c | 128.54 ± 0.68 b |
OE14 | 28.3 ± 0.98 a | 243.00 ± 2.14 a | 84.21 ± 2.31 a | 8.69 ± 0.40 a | 7.10 ± 0.20 a | 116.93 ± 2.05 c | |
OE10 | 27.83 ± 0.6 a | 244.56 ± 4.12 a | 82.78 ± 3.96 a | 8.92 ± 0.21 a | 6.20 ± 0.15 b | 117.58 ± 2.02 c | |
1 d | WT | 10.73 ± 0.55 c | 269.56 ± 1.56 b | 115.11 ± 2.47 c | 16.58 ± 0.49 b | 8.49 ± 0.13 c | 164.51 ± 2.50 d |
OE14 | 18.8 ± 0.45 a | 353.27 ± 1.23 a | 135.40 ± 1.26 a | 19.25 ± 1.01 a | 10.74 ± 0.03 a | 142.98 ± 1.93 f | |
OE10 | 17.26 ± 0.68 b | 348.97 ± 6.95 a | 129.55 ± 1.24 b | 19.49 ± 0.17 a | 9.87 ± 0.16 b | 149.27 ± 0.79 e | |
2 d | WT | 5.83 ± 0.6 b | 324.40 ± 4.61 b | 133.87 ± 4.67 b | 31.04 ± 0.32 c | 11.53 ± 0.07 c | 215.72 ± 0.11 c |
OE14 | 10.26 ± 0.45 a | 393.76 ± 5.09 a | 150.97 ± 1.28 a | 36.47 ± 0.47 a | 17.54 ± 0.05 a | 198.22 ± 2.73 d | |
OE10 | 10.43 ± 0.68 a | 393.60 ± 4.25 a | 149.35 ± 3.56 a | 33.91 ± 0.66 b | 15.56 ± 0.13 b | 202.66 ± 0.34 d |
Genes | Accession Numbers | Primer Pairs (5′-3′) |
---|---|---|
Actin | XM_001321306 | TTTGCTGGTGATGATGCC |
CCTTAGGGTTGAGAGGTGCTT | ||
TDC | XM_004243253 | GCCTAAGCCCTCATAAGTGG |
TGCCAGTCCTTGTAATCCA | ||
SS | XM_019211274 | CGCCAAGAATCCACGACTAA |
TCTGCCTGCTCTTCCAAATC | ||
SPS | XM_0012469991 | CAGTCAGCAGAGAGGAAAGAAG |
CAGTATCAGAATCCCGTCCAAG | ||
RCA | XM_010327541 | GAAGAAACAGACTGATGGGGAC |
CGTTGGAGCCTGGAAAAGC | ||
RbcL | XM_012015910 | TTTCCAAGGTCCGCCTCA |
CCACCGCGAAGACATTCATA | ||
RbcS | XM_026029055 | CCATTGCTAGCAACGGTGGAAGA |
TGCTCGTCGGACAAATCAGG |
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Liu, X.; Wang, Y.; Feng, Y.; Zhang, X.; Bi, H.; Ai, X. SlTDC1 Overexpression Promoted Photosynthesis in Tomato under Chilling Stress by Improving CO2 Assimilation and Alleviating Photoinhibition. Int. J. Mol. Sci. 2023, 24, 11042. https://doi.org/10.3390/ijms241311042
Liu X, Wang Y, Feng Y, Zhang X, Bi H, Ai X. SlTDC1 Overexpression Promoted Photosynthesis in Tomato under Chilling Stress by Improving CO2 Assimilation and Alleviating Photoinhibition. International Journal of Molecular Sciences. 2023; 24(13):11042. https://doi.org/10.3390/ijms241311042
Chicago/Turabian StyleLiu, Xutao, Yanan Wang, Yiqing Feng, Xiaowei Zhang, Huangai Bi, and Xizhen Ai. 2023. "SlTDC1 Overexpression Promoted Photosynthesis in Tomato under Chilling Stress by Improving CO2 Assimilation and Alleviating Photoinhibition" International Journal of Molecular Sciences 24, no. 13: 11042. https://doi.org/10.3390/ijms241311042