The transcription factor StC3H14 enhances cold tolerance through the CBF-dependent pathway in potato
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ID: 318969
2026
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Abstract
Abstract The CBF-dependent signaling pathway plays a central role in cold acclimation in potato; however, the transcriptional regulators controlling expression of StCBFs remain poorly understood. Here, we identified StC3H14, a CCCH-type zinc finger transcription factor, which directly activates StCBF1 and StCBF3 by directly binding to their promoters. Overexpression of StC3H14 in potato significantly enhanced cold tolerance, as shown by higher survival rates, reduced electrolyte leakage, and increased soluble sugar accumulation compared with wild-type and RNAi lines. Consistently, the expression of CBF-regulated COR genes was upregulated in overexpression lines. Moreover, under chilling conditions (15 ℃ day/10 ℃ night), StC3H14 overexpression produced significantly higher tuber yield per plant than wild-type and RNAi plants. Our findings establish StC3H14 as a key regulator of the CBF-dependent signaling pathway and highlight its potential for improving cold tolerance and yield in potato.
| Reference Key |
openalex_W7166331575
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|---|---|
| Authors | Sifan Sun, Huiyun Geng, Qipi Sina, Hantao Fu, Yongchao Wu, Rui Yang, Weilei Kong, Yongbin Wang, Binquan Huang |
| Journal | Plant physiology and biochemistry : PPB |
| Year | 2026 |
| DOI |
10.1093/plphys/kiag450
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| URL | |
| Keywords | Keywords not found |
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