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Jasmonate Positively Regulates Cold Tolerance by Promoting ABA Biosynthesis in Tomato.
Fei Ding1, Xizhi Wang1, Ziye Li1
1School of Life Sciences, Liaocheng University, Liaocheng 252000, China.
Plants (Basel, Switzerland)
|January 8, 2023
Summary
Jasmonate (JA) signaling enhances cold tolerance in tomato plants by promoting abscisic acid (ABA) biosynthesis. This involves the NCED2 gene and MYC2 transcription factor, crucial for sustainable tomato production under cold stress.
Area of Science:
- Plant Biology
- Molecular Biology
- Agricultural Science
Background:
- Tomato is sensitive to cold stress, impacting crop yield.
- Understanding plant responses to cold is vital for sustainable agriculture.
Purpose of the Study:
- To investigate the role of jasmonate (JA) in tomato's cold stress response.
- To elucidate the molecular mechanisms linking JA to cold tolerance.
Main Methods:
- Measuring JA and abscisic acid (ABA) levels under cold stress.
- Investigating the function of the ABA biosynthesis gene NCED2 via silencing.
- Analyzing the role of the JA signaling component MYC2.
Main Results:
- Cold stress increased both JA and ABA levels in tomato.
- JA signaling promoted ABA biosynthesis, partly via the NCED2 gene.
- MYC2 positively regulated NCED2 transcription, ABA accumulation, and cold tolerance.
Conclusions:
- JA signaling confers cold tolerance in tomato by upregulating ABA biosynthesis.
- The JA-MYC2-NCED2-ABA pathway is critical for tomato cold acclimation.
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