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<p>Low temperature stress emerges as a detrimental environmental challenge, substantially compromising crop yields across diverse agricultural ecosystems. F-box proteins occupy a central position, not merely in coordinating the intricate processes of growth and development, but also in modulating plant responses to an array of both biotic and abiotic stressors. We isolated the cabbage <i>BoFBX136</i> gene from cabbage, and conducted a comprehensive investigation into its function in the regulation of cold tolerance. Through a series of meticulous subcellular localization experiments, we found that the BoFBX136 protein is specifically positioned within the cell membrane and nucleus. When overexpressed in cabbage plants, <i>BoFBX136</i> led to a decrease in the levels of soluble sugars, proline, and antioxidant enzyme activities. Besides, under low-temperature stress, these plants exhibited heightened relative electrical conductivity and increased malondialdehyde content. Concurrently, a significant reduction was observed in the transgenic plants' capacity to scavenge reactive oxygen species. In conclusion, the results of our research reveal that <i>BoFBX136</i> serves as a suppressive regulator of cold tolerance in the organisms studied. This discovery underscores the crucial significance of <i>BoFBX136</i> in modulating responses to cold stress and establishes a foundation for future investigation into the complex molecular pathways underlying this process.</p>

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A Novel F-Box Gene BoFBX136 is Involved in Responses to Cold Stress in Cabbage (Brassica oleracea)

  • 期刊论文

  • 发表日期：

    2025年8月21日

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  • Jiahao Wang,
  • Yanjie Xiong,
  • Tao Xu,
  • Xiaoran Ma,
  • Jianghua Song

摘要

Low temperature stress emerges as a detrimental environmental challenge, substantially compromising crop yields across diverse agricultural ecosystems. F-box proteins occupy a central position, not merely in coordinating the intricate processes of growth and development, but also in modulating plant responses to an array of both biotic and abiotic stressors. We isolated the cabbage BoFBX136 gene from cabbage, and conducted a comprehensive investigation into its function in the regulation of cold tolerance. Through a series of meticulous subcellular localization experiments, we found that the BoFBX136 protein is specifically positioned within the cell membrane and nucleus. When overexpressed in cabbage plants, BoFBX136 led to a decrease in the levels of soluble sugars, proline, and antioxidant enzyme activities. Besides, under low-temperature stress, these plants exhibited heightened relative electrical conductivity and increased malondialdehyde content. Concurrently, a significant reduction was observed in the transgenic plants' capacity to scavenge reactive oxygen species. In conclusion, the results of our research reveal that BoFBX136 serves as a suppressive regulator of cold tolerance in the organisms studied. This discovery underscores the crucial significance of BoFBX136 in modulating responses to cold stress and establishes a foundation for future investigation into the complex molecular pathways underlying this process.