Comparative Transcriptome Analysis Unveils the Molecular Mechanism Underlying Sepal Colour Changes under Acidic pH Substratum in Hydrangea macrophylla
Abstract
:1. Introduction
2. Results
2.1. Change of Sepal Colour under Different Soil pH
2.2. Transcriptome Sequencing, Annotation, and Analysis of DEGs
2.3. Functional Annotation
2.4. DEG Identification and Functional Enrichment Analysis
2.5. Identification of TFs and Establishment of Gene Co-Expression Network Analysis (WGCNA)
2.6. Candidates Accountable for the Gain of Blue Colour in Hydrangea with Pink-Coloured Flower
2.7. qRT–PCR of the Transcriptomic Data
3. Discussions
3.1. Comparison of Genes Involved in Flavonoid Biosynthesis in Hydrangeas Grown under Different pH Conditions
3.2. Identification of Hub Genes Related to Flower Formation by WGCNA
3.3. Identification of Transcription Factors Related to Flower Colour Transition
4. Materials and Methods
4.1. Plant Material
4.2. RNA Extraction, cDNA Library Creation, and Sequencing
4.3. Data Analysis
4.4. Expression Annotation
4.5. GO and KEGG Pathway Enrichment Analysis for Differentially Expressed Unigenes
4.6. Quantitative Reverse Transcription–Polymerase Chain Reaction-Based Validation
4.7. Estimation of Relative Pigment Content
4.8. Statistical Analyses
5. Summary
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Length Range | Contigs | Unigenes |
---|---|---|
200–300 | 120,191 (31.13%) | 48,868 (26.20%) |
300–500 | 92,335 (27%) | 60,448 (32.41%) |
500–1000 | 72,233 (21.11%) | 48,027 (25.75%) |
1000–2000+ | 57,309 (16.75%) | 29,134 (15.62%) |
Total number | 342,068 | 186,477 |
Total length | 845,487,394 | 94,130,265 |
N50 length | 903 | 794 |
Mean length | 624 | 618 |
Gene Ontology Term | Cluster Frequency | Genome Frequency | p-Value | Corrected p-Value |
---|---|---|---|---|
BP: Pigment biosynthetic process (GO:0046148) | 31 out of 207, 14.97584% | 24 out of 298, 8.05369% | 6.61 × 10−9 | 0.000000 |
BP: Metabolic process (GO:0008152) | 4 out of 207, 1.67687% | 2 out of 298, 0.67111% | 5.62 × 10−5 | 0.000622 |
BP: Developmental process (GO:0032502) | 2 out of 207, 0.96618% | 1 out of 298, 0.33557% | 4.33 ×10−5 | 0.000008 |
BP: Anthocyanin process (GO:0046283) | 3 out of 207, 1.44927% | 2 out of 298, 0.671114% | 3.45 × 10−5 | 0.000018 |
BP: Flavonoid biosynthetic process (GO: 0009813) | 4 out of 207, 1.93236% | 1 out of 298, 0.33557% | 6.89 × 10−5 | 0.00173 |
BP: Chalcone biosynthetic process (GO:0016210) | 6 out of 207, 2.89855% | 3 out of 298, 1.00671% | 5.22 × 10−5 | 0.000000 |
MF: Catalytic activity (GO:0003824) | 3 out of 237, 1.26533% | 1 out of 339, 0.29498% | 7.86 × 10−5 | 0.004689 |
MF: Binding (GO:0005488) | 6 out of 237, 2.53145% | 3 out of 339, 0.83454% | 4.34 × 10−5 | 0.00173 |
MF: Electron carrier activity (GO:0009055) | 9 out of 237, 3.79746% | 5 out of 339, 1.47579% | 5.76 × 10−4 | 0.002882 |
MF: Transcription factor activity (GO:0003700) | 10 out of 237, 4.219400% | 6 out of 339, 1.7699% | 2.14 × 10−4 | 0.005734 |
CC: Intracellular (GO:0005622) | 5 out of 177 2.82475% | 1 out of 259 0.38610% | 3.65 × 10−5 | 0.009393 |
CC: Organelle (GO:0020037) | 3 out of 177 1.69491% | 2 out of 259 0.77220% | 6.23 × 10−1 | 0.000062 |
Name | C-S1 | C-S2 | C-S3 | T-S1 | T-S2 | T-S3 |
---|---|---|---|---|---|---|
CHS1 PB.10727.1|chr7:5288756-5290374 | 51.98 | 43.18 | 62.38 | 13.43 | 14.85 | 11.29 |
CHS2 PB.10728.1|chr7:5301940-5316126 | 3.11 | 4.51 | 3.11 | 15.29 | 7.91 | 12.44 |
CHS3 PB.10728.2|chr7:5301941-5316113 | 4.14 | 5.512 | 2.77 | 16.92 | 8.93 | 13.34 |
CHS4 PB.10728.3|chr7:5301944-5316192 | 2.16 | 4.15 | 3.10 | 15.34 | 7.13 | 11.24 |
4CL12 PB.405.4|chr1:8532291-8600510 | 15.32 | 17.61 | 15.33 | 31.62 | 21.21 | 24.34 |
4CL14 PB.4253.1|chr3:23869958-23873008 | 13.11 | 18.21 | 19.33 | 24.12 | 49.11 | 33.14 |
4CL18 PB.5838.1|chr4:349590-353192 | 12.12 | 18.16 | 15.13 | 34.17 | 46.21 | 36.15 |
CHR1 PB.8347.2|chr5:1481568-1493170 | 11.33 | 15.71 | 13.23 | 32.12 | 29.41 | 33.91 |
CHR3 PB.8348.1|chr5:1481568-1487857 | 13.10 | 18.71 | 13.13 | 35.62 | 29.21 | 26.34 |
CHI1 PB.2128.1|chr1:52317616-52318844 | 7.97 | 8.52 | 9.46 | 10.72 | 11.10 | 15.23 |
CHI2 PB.2129.1|chr1:52333401-52334681 | 21.12 | 22.81 | 28.53 | 11.22 | 12.90 | 13.01 |
FLS1 PB.4570.1|chr3:32763532-32765066 | 23.14 | 28.17 | 21.01 | 53.44 | 68.57 | 78.11 |
FLS2 PB.4570.2|chr3:32763692-32765066 | 14.32 | 19.61 | 16.33 | 44.62 | 39.21 | 36.34 |
F3′H PB.7377.2|chr4:42376257-42378956 | 5.10 | 7.16 | 3.29 | 16.83 | 14.56 | 13.01 |
F3′5′H PB.4084.1|chr3:12278062-12281867 | 13.01 | 12.59 | 11.74 | 30.45 | 36.18 | 35.16 |
F3′H4 PB.7478.2|chr4:42392721-42394930 | 12.61 | 11.19 | 17.14 | 39.15 | 33.12 | 31.14 |
FOMT PB.7235.1|chr4:37833577-37835915 | 53.11 | 43.17 | 51.21 | 15.16 | 19.20 | 17.31 |
ANR PB.13205.1|chr8:31320120-31332067 | 10.14 | 12.23 | 11.32 | 24.15 | 22.11 | 21.34 |
ANS2 PB.8440.1|chr5:3196923-3199377 | 16.12 | 16.80 | 14.24 | 35.11 | 36.70 | 34.15 |
ANS3 PB.8440.2|chr5:3196930-3199422 | 19.15 | 17.14 | 18.07 | 25.81 | 23.55 | 22.65 |
UFGT1 PB.2783.1|chr2:13439523-13441448 | 21.65 | 28.19 | 26.13 | 35.19 | 39.54 | 37.32 |
UFGT2 PB.2783.2|chr2:13439659-13441448 | 10.22 | 16.36 | 13.41 | 25.41 | 24.33 | 29.17 |
PAL5 PB.11849.17|chr7:40943081-40945873 | 26.13 | 21.75 | 22.98 | 45.21 | 42.76 | 49.81 |
PAL6 PB.916.1|chr1:28183235-28188005 | 14.23 | 11.10 | 13.43 | 36.29 | 44.11 | 35.18 |
PAL9 PB.11849.2|chr7:40942885-40959392 | 23.14 | 24.15 | 25.18 | 39.22 | 32.16 | 39.41 |
PAL11 PB.11849.8|chr7:40942885-40959918 | 24.13 | 22.09 | 23.59 | 50.19 | 54.23 | 55.68 |
DFR1 PB.339.2|chr1:7156508-7160534 | 22.12 | 23.15 | 26.19 | 40.28 | 44.13 | 45.18 |
DFR2 PB.340.1|chr1:7164081-7167125 | 20.11 | 21.89 | 22.55 | 39.11 | 36.23 | 39.90 |
UA3GT PB.6187.1|chr4:11023032-11024681 | 14.13 | 12.09 | 13.59 | 20.18 | 24.23 | 25.78 |
PIP2 PB.9675.6|chr5:39486362-39487950 | 22.11 | 22.19 | 21.49 | 33.29 | 34.22 | 35.24 |
UYP75A PB.9676.5|chr5:39463191-39464819 | 14.12 | 12.49 | 13.45 | 22.11 | 21.55 | 23.19 |
UYP75A PB.9848.1|chr5:43311230-43312833 | 13.11 | 11.19 | 13.69 | 21.29 | 24.55 | 22.01 |
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Rahmati, R.; Hamid, R.; Ghorbanzadeh, Z.; Jacob, F.; Azadi, P.; Zeinalabedini, M.; Karimi Farsad, L.; Kazemi, M.; Ebrahimi, M.A.; Shahinnia, F.; et al. Comparative Transcriptome Analysis Unveils the Molecular Mechanism Underlying Sepal Colour Changes under Acidic pH Substratum in Hydrangea macrophylla. Int. J. Mol. Sci. 2022, 23, 15428. https://doi.org/10.3390/ijms232315428
Rahmati R, Hamid R, Ghorbanzadeh Z, Jacob F, Azadi P, Zeinalabedini M, Karimi Farsad L, Kazemi M, Ebrahimi MA, Shahinnia F, et al. Comparative Transcriptome Analysis Unveils the Molecular Mechanism Underlying Sepal Colour Changes under Acidic pH Substratum in Hydrangea macrophylla. International Journal of Molecular Sciences. 2022; 23(23):15428. https://doi.org/10.3390/ijms232315428
Chicago/Turabian StyleRahmati, Razieh, Rasmieh Hamid, Zahra Ghorbanzadeh, Feba Jacob, Pezhman Azadi, Mehrshad Zeinalabedini, Laleh Karimi Farsad, Mehrbano Kazemi, Mohammad Ali Ebrahimi, Fahimeh Shahinnia, and et al. 2022. "Comparative Transcriptome Analysis Unveils the Molecular Mechanism Underlying Sepal Colour Changes under Acidic pH Substratum in Hydrangea macrophylla" International Journal of Molecular Sciences 23, no. 23: 15428. https://doi.org/10.3390/ijms232315428