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首页> 外文期刊>Journal of Experimental Botany >Transcriptional profiling analysis in Populus yunnanensis provides insights into molecular mechanisms of sexual differences in salinity tolerance
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Transcriptional profiling analysis in Populus yunnanensis provides insights into molecular mechanisms of sexual differences in salinity tolerance

机译:云南杨的转录谱分析提供了对盐度耐受性差异的分子机制的见解

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摘要

Physiological responses to abiotic stress in plants exhibit sexual differences. Females usually experience greater negative effects than males; however, little is known about the molecular mechanisms of sexual differences in abiotic stress responses. In the present study, transcriptional responses to salinity treatments were compared between male and female individuals of the poplar Populus yunnanensis. It was found that several functional groups of genes involved in important pathways were differentially expressed, including photosynthesis-related genes, which were mainly up-regulated in males but down-regulated in females. This gene expression pattern is consistent with physiological observations showing that salinity inhibited photosynthetic capacity more in females than in males. Furthermore, genes located in autosomes rather than in the female-specific region of the W chromosome are the major contributors to the sexual differences in the salinity tolerance of poplars. In conclusion, this study provided molecular evidence of sexual differences in the salinity tolerance of poplars. The identified sex-related genes in salinity tolerance and their functional groups will enhance our understanding of sexual differences in salinity stress at the transcription level.
机译:植物对非生物胁迫的生理反应表现出性别差异。女性通常比男性遭受更大的负面影响。然而,关于非生物应激反应中性别差异的分子机制知之甚少。在本研究中,比较了杨树杨的雄性和雌性个体对盐度处理的转录反应。发现与重要途径有关的基因的几个功能组被差异表达,包括光合作用相关基因,这些基因主要在男性中被上调而在女性中被下调。该基因表达模式与生理观察一致,生理观察表明,盐度对雌性的抑制比对雄性的抑制更大。此外,位于常染色体而不是位于W染色体女性特定区域的基因是造成杨树耐盐性的性别差异的主要因素。总之,这项研究提供了杨树耐盐性方面性别差异的分子证据。在耐盐性中鉴定出的与性别相关的基因及其功能组将在转录水平上增进我们对盐胁迫的性别差异的理解。

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