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Related Experiment Video

Updated: Jul 9, 2025

Generating Homo- and Heterografts Between Watermelon and Bottle Gourd for the Study of Cold-responsive MicroRNAs
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Decoding VaCOLD1 Function in Grapevines: A Membrane Protein Enhancing Cold Stress Tolerance.

Qiaoling Zheng1,2,3, Qinhan Yu1,2,3, Wenkong Yao4,2,3

  • 1School of Life Science, Ningxia University, Yinchuan, Ningxia 750021, China.

Journal of Agricultural and Food Chemistry
|December 1, 2023
PubMed
Summary
This summary is machine-generated.

Grapevine cold tolerance involves VaCOLD1, a protein enhancing cold endurance. VaCOLD1 strengthens the CBF-COR pathway, improving plant resilience to cold stress.

Keywords:
ABACBF-COR pathwayVaCOLD1VaGPA1Vitis amurensiscold stress responses

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Area of Science:

  • Plant Biology
  • Molecular Biology
  • Stress Physiology

Background:

  • Low-temperature stress is a major challenge for grapevine cultivation worldwide.
  • The function of COLD1, a known cold receptor in rice, remains unclear in grapevine cold signaling.

Purpose of the Study:

  • To identify and characterize the role of VaCOLD1 in grapevine cold stress response.
  • To elucidate the molecular mechanisms underlying VaCOLD1-mediated cold tolerance.

Main Methods:

  • Identification and localization of VaCOLD1 in Vitis amurensis.
  • Analysis of VaCOLD1 expression patterns and promoter activity in Arabidopsis thaliana.
  • Investigating the interaction between VaCOLD1 and VaGPA1.
  • Assessing cold tolerance in transgenic Arabidopsis and grape calli overexpressing VaCOLD1.

Main Results:

  • VaCOLD1, a transmembrane protein, is localized to plasma and ER membranes and broadly expressed.
  • VaCOLD1 expression is induced by cold and other environmental stresses.
  • VaCOLD1 interacts with VaGPA1, and their combined expression enhances cold endurance.
  • Overexpression of VaCOLD1 improves cold tolerance in Arabidopsis by activating the CBF-COR pathway and modulating ABA-mediated gene expression.

Conclusions:

  • VaCOLD1 plays a crucial role in grapevine cold stress response.
  • The VaCOLD1-VaGPA1 complex mediates cold tolerance through the CBF-COR pathway.
  • VaCOLD1 contributes to cold acclimatization by managing osmotic stress and ABA signaling.