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Translation Efficiency Test Using Polysome Profiles Under Heat Stress
Published on: October 11, 2024
Transcriptome analysis revealed lncRNA-mRNA modules responsive to low temperature stress in Qingke.
Mingzhai Yu1,2, Deqing Zhuoga1,2, Dabin Zhuang1,2
1Institute of Agricultural Sciences, Xizang Academy of Agriculture and Animal Husbandry Sciences, Lhasa, Xizang, 850002, China.
BMC Genomics
|May 12, 2026
Summary
Qingke, a cold-hardy barley, employs phased physiological defenses and metabolic shifts to survive cold stress. Specific long non-coding RNAs (lncRNAs) like LNC_003210 may regulate photosynthesis for adaptation.
Area of Science:
- Plant Science
- Molecular Biology
- Stress Physiology
Background:
- Qingke (hull-less barley) is a vital crop on the Qinghai-Xizang Plateau.
- Cold stress induces oxidative damage and necessitates robust plant defense mechanisms.
- Long non-coding RNAs (lncRNAs) are emerging regulators of plant stress responses.
Purpose of the Study:
- To investigate the physiological and molecular adaptations of Qingke to cold stress.
- To identify key genes and regulatory elements involved in cold tolerance.
- To elucidate the role of lncRNAs in Qingke's cold adaptation.
Main Methods:
- Physiological assays measuring antioxidant enzyme activity, osmotic potential, and membrane integrity.
- Transcriptome profiling to identify differentially expressed genes (DEGs).
- Bioinformatic analysis to identify lncRNAs and their potential target genes.
Main Results:
- Cold stress triggered a biphasic response: early antioxidant defense (SOD/POD) followed by later osmotic regulation (soluble protein).
- Transcriptome analysis revealed 317 DEGs involved in catalytic activity and stress response, with distinct pathways activated at different stress/recovery stages.
- A specific lncRNA, LNC_003210, was identified as a potential regulator of photosynthesis-related genes.
Conclusions:
- Qingke exhibits a dynamic adaptation strategy to cold stress involving phased physiological adjustments and metabolic reprogramming.
- LncRNAs, particularly LNC_003210, are likely crucial in mediating cold tolerance by influencing key metabolic pathways like photosynthesis.
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