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| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Zhang, Xuting Gao, Xianling Liu, Bin Wang, Juan Shan, Jinyuan Wang, Jiaxiu Zhang, Yanxia Li, Guojing Jia, Yonghong Wang, Ruigang |
| Abstract | Background Larix gmelinii is an excellent stress resistant coniferous tree species with a wide distribution and important economic and ecological value. However, at seedling stage, L. gmelinii is extremely susceptible to abiotic stresses, and systematic research on the adaptation mechanisms of L. gmelinii seedlings to abiotic stress is still lacking. Results Phenotypic observation and physiological index detection showed that L. gmelinii seedlings wilted with needles withered and yellowish at later stages of drought and salt stress; Under low temperature, the seedlings grew slowly and turned red at later stage. Under all 3 abiotic stresses, the chlorophyll content in seedlings significantly decreased, while the MDA content significantly increased; The activity of SOD and CAT showed a trend of increasing first and then decreasing. Transcriptome analysis revealed that DEGs were mainly involved in carbohydrate and amino acid metabolism, phenylpropanoid biosynthesis, and flavonoid synthesis metabolism. Metabolomic analysis found unique DAMs under 3 stress treatments. The combined analysis of transcriptome and metabolome showed that the changing patterns of DEGs and DAMs in primary and secondary metabolism were consistent: carbohydrate were significantly accumulated under low temperature stress; amino acids showed the most significant changes under salt stress. The variation pattern of secondary metabolism was similar under both drought and salt stress, while anthocyanin accumulation was the most obvious only under low temperature stress. Conclusion Our study provides insightful information about the different mechanisms that L. gmelinii seedlings employ in response to drought, low temperature or salt stress. |
| Related Links | https://bmcplantbiol.biomedcentral.com/counter/pdf/10.1186/s12870-024-05831-w.pdf |
| Ending Page | 17 |
| Page Count | 17 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| ISSN | 14712229 |
| DOI | 10.1186/s12870-024-05831-w |
| Journal | BMC Plant Biology |
| Issue Number | 1 |
| Volume Number | 24 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2024-11-27 |
| Access Restriction | Open |
| Subject Keyword | Plant Sciences Agriculture Tree Biology Larix gmelinii Seedlings Abiotic stress Transcriptome Metabolome |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science |
| Journal Impact Factor | 4.3/2023 |
| 5-Year Journal Impact Factor | 5.2/2023 |
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