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| DOI | 10.1080/15592324.2023.2300228 |
| Reciprocal modulation of responses to nitrate starvation and hypoxia in roots and leaves of Arabidopsis thaliana | |
| 发表日期 | 2024 |
| ISSN | 1559-2316 |
| EISSN | 1559-2324 |
| 起始页码 | 19 |
| 结束页码 | 1 |
| 卷号 | 19期号:1 |
| 英文摘要 | The flooding of agricultural land leads to hypoxia and nitrate leaching. While understanding the plant's response to these conditions is essential for crop improvement, the effect of extended nitrate limitation on subsequent hypoxia has not been studied in an organ-specific manner. We cultivated Arabidopsis thaliana without nitrate for 1 week before inducing hypoxia by bubbling the hydroponic solution with nitrogen gas for 16 h. In the roots, the transcripts of two transcription factor genes (HRA1, HRE2) and three genes involved in fermentation (SUS4, PDC1, ADH1) were similar to 10- to 100-fold upregulated by simultaneous hypoxia and nitrate starvation compared to the control condition (replete nitrate and oxygen). In contrast, this hypoxic upregulation was similar to 5 to 10 times stronger when nitrate was available. The phytoglobin genes PGB1 and PGB2, involved in nitric oxide (NO) scavenging, were massively downregulated by nitrate starvation (similar to 1000-fold and 10(5)-fold, respectively), but only under ambient oxygen levels; this was reflected in a 2.5-fold increase in NO concentration. In the leaves, HRA1, SUS4, and RAP2.3 were upregulated similar to 20-fold by hypoxia under nitrate starvation, whereas this upregulation was virtually absent in the presence of nitrate. Our results highlight that the plant's responses to nitrate starvation and hypoxia can influence each other. |
| 英文关键词 | Nitrogen deficiency; hypoxia; climate change; combined stress; Arabidopsis thaliana |
| 语种 | 英语 |
| WOS研究方向 | Biochemistry & Molecular Biology ; Plant Sciences |
| WOS类目 | Biochemistry & Molecular Biology ; Plant Sciences |
| WOS记录号 | WOS:001135413100001 |
| 来源期刊 | PLANT SIGNALING & BEHAVIOR
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/297367 |
| 作者单位 | Leipzig University; Leipzig University; Payame Noor University |
| 推荐引用方式 GB/T 7714 | . Reciprocal modulation of responses to nitrate starvation and hypoxia in roots and leaves of Arabidopsis thaliana[J],2024,19(1). |
| APA | (2024).Reciprocal modulation of responses to nitrate starvation and hypoxia in roots and leaves of Arabidopsis thaliana.PLANT SIGNALING & BEHAVIOR,19(1). |
| MLA | "Reciprocal modulation of responses to nitrate starvation and hypoxia in roots and leaves of Arabidopsis thaliana".PLANT SIGNALING & BEHAVIOR 19.1(2024). |
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