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Published on: January 25, 2018
Integrated Multi-Omics Characterization of the Salt-Sensitive Mutant sss1 in Soybean
Ziyun Chen1,2,3, Xi Li3, Jinyang Zhang4
1College of Life Sciences, China Jiliang University, Hangzhou 310018, China.
Plants (Basel, Switzerland)
|June 12, 2026
Summary
Soybean salt sensitivity involves disrupted ion balance and impaired hormone signaling. The sss1 mutant shows excessive sodium, poor potassium retention, and altered metabolism, impacting soybean yield.
Area of Science:
- Plant Science
- Molecular Biology
- Agricultural Science
Background:
- Soil salinity severely limits soybean (Glycine max) production globally.
- While ionic toxicity is a known factor, the interplay of metabolic and hormonal pathways in salt stress response is not fully understood.
Purpose of the Study:
- To characterize the physiological, metabolic, and transcriptomic basis of salt sensitivity in the soybean mutant sss1.
- To elucidate the molecular mechanisms underlying salt tolerance in soybean.
Main Methods:
- Physiological measurements of ion content (Na+, K+).
- Multi-omics analyses including metabolomics and transcriptomics.
- Characterization of abscisic acid (ABA) and jasmonic acid (JA) signaling pathways.
Main Results:
- The sss1 mutant exhibits severe ion homeostasis disruption, with high Na+ accumulation and impaired K+ retention.
- Extensive metabolic reprogramming was observed, with reduced mannose levels indicating a potential metabolic vulnerability.
- A dual impairment in abscisic acid (ABA) and jasmonic acid (JA) signaling pathways was identified, alongside reduced hormone levels and downregulated biosynthetic genes.
Conclusions:
- The sss1 locus is associated with systemic disruptions in ion homeostasis, hormone signaling, and metabolic reprogramming in soybean.
- Understanding these multi-omics interactions provides a foundation for improving salt tolerance in soybean through genetic approaches.
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Tonicity
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Tonicity
Tonicity describes the capacity of a cell to lose or gain water depending on the solute...