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三种双子叶植物对低氧环境早期转录组反应的比较。

Comparisons of early transcriptome responses to low-oxygen environments in three dicotyledonous plant species.

机构信息

Agriculture and Agri-Food Canada/Agriculture et Agroalimentaire Canada, Southern Crop Protection and Food Research Centre, London, Ontario, Canada.

出版信息

Plant Signal Behav. 2010 Aug;5(8):1006-9. doi: 10.4161/psb.5.8.12231. Epub 2010 Aug 1.

Abstract

Waterlogging is a serious impediment to crop productivity worldwide which acts to reduce oxygen levels in the rhizosphere due to the low diffusion rate of molecular oxygen in water. Plants respond to low oxygen through rapid and specific changes at both the transcriptional and translational levels. Transcriptional changes to low-oxygen (hypoxia) stress have been studied in a number of plant species using whole genome microarrays. Using transcriptome data from root tissue from early time points (4-5 h) from cotton (Gossypium hirsutum), Arabidopsis and gray poplar (Populus x canescens), we have identified a core set of orthologous genes that responded to hypoxia in similar ways between species, and others that showed species specific responses . Responses to hypoxia were most similar between Arabidopsis and cotton, while the waterlogging tolerant poplar species exhibited some significant differences.

摘要

水涝是全球范围内作物生产力的严重障碍,由于分子氧在水中的扩散速率较低,水涝会降低根际的氧气水平。植物通过在转录和翻译水平上的快速和特异性变化来应对低氧。使用全基因组微阵列研究了许多植物物种对低氧(缺氧)胁迫的转录变化。利用棉花(Gossypium hirsutum)、拟南芥和灰杨(Populus x canescens)根组织早期(4-5 小时)的转录组数据,我们鉴定出了一组核心的同源基因,它们在物种间以相似的方式对缺氧作出响应,还有一些基因表现出物种特异性的响应。拟南芥和棉花之间的缺氧反应最为相似,而耐水涝的杨树物种则表现出一些显著的差异。

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本文引用的文献

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Cross-kingdom comparison of transcriptomic adjustments to low-oxygen stress highlights conserved and plant-specific responses.
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