Abstract
High salt concentration is a major abiotic stress limiting plant growth and productivity in many areas of the world. Elaeagnus angustifolia L. adapts to adverse environments and is widely planted in the western region of China as a windbreaker and for landscape and soil stabilization. High salt concentrations inhibited photosynthesis of E. angustifolia, but the mechanism is not known. In this paper, RNA-sequencing was used to investigate effects of salt stress on the photosynthetic characteristics of the species. In total, 584 genes were identified and involved in photosynthetic pathways. The downregulation of genes that encode key enzymes involved in photosynthesis and genes correlated to important structures in photosystem and light-harvesting complexes might be the main reason, particularly, the downregulation of the gene that encodes magnesium chelatase. This would decrease the activity of enzymes involved in chlorophyll synthesis and the downregulation of the key gene that encodes Rubisco, and thereby decreases enzyme activity and the protein content of Rubisco.
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Abbreviations
- CDS:
-
predicted conding sequence
- C i :
-
intercellular CO2 concentration
- COG:
-
clusters of orthologous groups
- DEG:
-
differentially expressed gene
- DM:
-
dry mass
- E :
-
transpiration rate
- FDR:
-
false discovery rate
- FM:
-
fresh mass
- FPKM:
-
fragments per kilobase of exon model
- Fv/Fm :
-
maximum photochemical efficiency of PSII
- gs:
-
stomatal conductance
- PEPC:
-
phosphoenolpyruvate carboxylase
- P N :
-
net photosynthetic rate
- PPDK:
-
pyruvate orthophosphate dikinase
- RNA-Seq:
-
RNAsequencing
- RPKM:
-
reads per KB per million
- SNP:
-
simple nucleotide polymorphism
- SSR:
-
simple sequence repeat
- ΦPSII :
-
actual PSII efficiency
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Acknowledgements: This work was supported by the National Natural Science Foundation of China (Grant 31400239, 31600200), the National Basic Research Program of China (Grant 2012CB114201), the Science and Technology Development Projects of Shandong Province (Grant 2013GNC11310), Independent Innovation and Achievement Transformation of Special Major Key Technical Plans of Shandong Province (2017CXGC0311), and the Program for Scientific Research Innovation Team in Colleges and Universities of Shandong Province.
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Lin, J., Li, J.P., Yuan, F. et al. Transcriptome profiling of genes involved in photosynthesis in Elaeagnus angustifolia L. under salt stress. Photosynthetica 56, 998–1009 (2018). https://doi.org/10.1007/s11099-018-0824-6
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DOI: https://doi.org/10.1007/s11099-018-0824-6