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Updated: Apr 19, 2026
10:18
Analysis of Protein Import into Chloroplasts Isolated from Stressed Plants
Published on: November 1, 2016
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SlBTF3-OST1-CBF1 Module Maintains Chloroplast Integrity under Cold Stress in Tomato (Solanum lycopersicum)
Hui Ning1, Yanling Wang1, Hossein Ghanizadeh2
1Northeast Agricultural University, College of Life Sciences, No. 600 Changjiang Road, Xiangfang District, Harbin 150030, Heilongjiang, China.
Journal of Agricultural and Food Chemistry
|April 17, 2026
Summary
This study reveals how the transcription factor 3 (BTF3) enhances cold tolerance in tomato plants. Overexpression of SlBTF3 improves resistance, while mutants show increased sensitivity to low temperatures.
Area of Science:
- Plant Biology
- Molecular Genetics
- Agricultural Science
Background:
- Tomato (Solanum lycopersicum) is a vital crop facing growth limitations due to low temperatures.
- The role of Transcription Factor 3 (BTF3) in plant stress tolerance is known, but its specific function in tomato cold resistance is not well understood.
Purpose of the Study:
- To elucidate the mechanism of BTF3-mediated cold tolerance in tomato.
- To investigate the function of SlBTF3 in response to cold stress.
Main Methods:
- Generated SlBTF3-overexpression (SlBTF3-OE) lines and slbtf3 knockout mutants.
- Assessed cold tolerance by comparing OE lines and mutants with wild-type plants.
- Investigated protein interactions and phosphorylation pathways involving SlBTF3, SlCBF1, and SlOST1.
Main Results:
- SlBTF3-OE plants exhibited enhanced cold tolerance, whereas slbtf3 mutants were more sensitive to cold.
- SlBTF3 was found to interact with and stabilize the cold-response protein SlCBF1.
- SlBTF3 maintains chloroplast integrity, boosts antioxidant enzyme activity, and upregulates photosynthesis genes under cold stress.
Conclusions:
- SlBTF3 plays a crucial role in mediating cold tolerance in tomato.
- The findings provide a mechanistic understanding of SlBTF3 function and offer a basis for developing cold-resistant tomato varieties.
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