Hydrogen sulfide toxicity inhibits primary root growth through the ROS-NO pathway
文献类型：期刊论文
| 作者 | Xu, Jin
|
| 刊名 | SCIENTIFIC REPORTS
 |
| 出版日期 | 2017 |
| 卷号 | 7期号:868 |
| 关键词 | INDUCED STOMATAL CLOSURE ACTIVATED PROTEIN-KINASE NITRIC-OXIDE PRODUCTION ABSCISIC-ACID TRANSCRIPTIONAL REGULATION ARABIDOPSIS-THALIANA SIGNAL-TRANSDUCTION S-SULFHYDRATION STRESS PEROXIDE |
| 中文摘要 | High concentrations of hydrogen sulfide (H2S) are toxic to plants and inhibit their growth. Previous research indicated that high concentrations of H2S modulate the root system architecture (RSA) by affecting auxin transport; however, the signaling pathway underlying this process remains unclear. Here, we investigated the effects of exogenous sodium hydrosulfide (NaHS), an H2S donor, on primary root (PR) growth in Arabidopsis using pharmacological, physiological, and genetic approaches. H2S toxicity repressed PR growth by triggering a signal transduction pathway involving reactive oxygen species (ROS) accumulation, MITOGEN-ACTIVATED PROTEIN KINASE 6 (MPK6) activation, and nitric oxide (NO) production. Respiratory burst oxidase homolog mutants and an NO synthase mutant were less sensitive to NaHS, suggesting that both ROS and NO mediate the inhibitory effects of H2S on PR growth. We found that exogenous H2S-activated ROS production was required for NO generation and that MPK6 mediated H2S-induced NO production. MPK6 was shown to function downstream of ROS and upstream of NO. Finally, we demonstrated that exogenous H2S repressed the distribution of auxin and reduced the meristematic cell division potential in root tips, and NO was involved in this process. |
| 语种 | 英语 |
| 公开日期 | 2017-05-05 |
| 源URL | [http://ir.xtbg.org.cn/handle/353005/10377]  |
| 专题 | 西双版纳热带植物园_2012年后新成立研究组 |
| 推荐引用方式 GB/T 7714 | Xu, Jin. Hydrogen sulfide toxicity inhibits primary root growth through the ROS-NO pathway[J]. SCIENTIFIC REPORTS,2017,7(868). |
| APA | Xu, Jin.(2017).Hydrogen sulfide toxicity inhibits primary root growth through the ROS-NO pathway.SCIENTIFIC REPORTS,7(868). |
| MLA | Xu, Jin."Hydrogen sulfide toxicity inhibits primary root growth through the ROS-NO pathway".SCIENTIFIC REPORTS 7.868(2017). |
入库方式： OAI收割
来源：西双版纳热带植物园
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