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<p>Ubiquitin-ribosomal proteins play important regulatory roles in protein synthesis, protein degradation, transcriptional processing, and apoptosis regulation and are thus involved in plant growth and the stress response. At present, no ubiquitin-ribosomal gene has been reported in mango. In a previous study, a ubiquitin-ribosomal gene named <i>MiUBRPS27a</i> was obtained from cDNA-SCoT differential display analysis of mango under different stress treatments. In this study, the expression pattern and function of <i>MiUBRPS27a</i> were studied. The results revealed that <i>MiUBRPS27a</i> was expressed in all the tested tissues, among which the highest expression level was detected in the leaves. The expression of the <i>MiUBRPS27a</i> gene was affected by low-temperature, drought, and salt stress treatments. The overexpression of <i>MiUBRPS27a</i> significantly increased the length of roots of <i>Arabidopsis plants</i> under low-temperature, drought and salt stress conditions. The <i>MiUBRPS27a</i> transgenic plants presented decreased malondialdehyde (MDA) and hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) contents and increased superoxide dismutase (SOD) and proline contents, thus increasing the survival rate of the transgenic <i>Arabidopsis</i> plants under salt and drought stress. Our results suggest that the <i>MiUBRPS27a</i> gene plays an important role in the plant response to stress.</p>

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Overexpression of the mango MiUBRPS27a gene increases resistance to low temperature, drought and salt stress in Arabidopsis

  • 期刊论文

  • 发表日期：

    2025年5月12日

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  • Liufei Qin,
  • Yili Zhang,
  • Wenjing Mo,
  • Jiawei Zhu,
  • TianLi Guo,
  • Xinhua He,
  • Cong Luo

摘要

Ubiquitin-ribosomal proteins play important regulatory roles in protein synthesis, protein degradation, transcriptional processing, and apoptosis regulation and are thus involved in plant growth and the stress response. At present, no ubiquitin-ribosomal gene has been reported in mango. In a previous study, a ubiquitin-ribosomal gene named MiUBRPS27a was obtained from cDNA-SCoT differential display analysis of mango under different stress treatments. In this study, the expression pattern and function of MiUBRPS27a were studied. The results revealed that MiUBRPS27a was expressed in all the tested tissues, among which the highest expression level was detected in the leaves. The expression of the MiUBRPS27a gene was affected by low-temperature, drought, and salt stress treatments. The overexpression of MiUBRPS27a significantly increased the length of roots of Arabidopsis plants under low-temperature, drought and salt stress conditions. The MiUBRPS27a transgenic plants presented decreased malondialdehyde (MDA) and hydrogen peroxide (H2O2) contents and increased superoxide dismutase (SOD) and proline contents, thus increasing the survival rate of the transgenic Arabidopsis plants under salt and drought stress. Our results suggest that the MiUBRPS27a gene plays an important role in the plant response to stress.