Rhizospheric microbiomics integrated with plant transcriptomics provides insight into the Cd response mechanisms of the newly identified Cd accumulator Dahlia pinnata
文献类型：期刊论文
| 作者 | Li, Xiong ; Li, Boqun; Jin, Tao; Chen, Huafang; Zhao, Gaojuan; Qin, Xiangshi; Yang, Yongping; Xu, Jianchu
|
| 刊名 | FRONTIERS IN PLANT SCIENCE
 |
| 出版日期 | 2022 |
| 卷号 | 13页码:1091056 |
| 关键词 | heavy metal contamination phytoextraction Dahlia pinnata rhizobacteria signal transduction PHYTOREMEDIATION GROWTH L. |
| DOI | 10.3389/fpls.2022.1091056 |
| 英文摘要 | Phytoremediation that depends on excellent plant resources and effective enhancing measures is important for remediating heavy metal-contaminated soils. This study investigated the cadmium (Cd) tolerance and accumulation characteristics of Dahlia pinnata Cav. to evaluate its Cd phytoremediation potential. Testing in soils spiked with 5-45 mg kg(-1) Cd showed that D. pinnata has a strong Cd tolerance capacity and appreciable shoot Cd bioconcentration factors (0.80-1.32) and translocation factors (0.81-1.59), indicating that D. pinnata can be defined as a Cd accumulator. In the rhizosphere, Cd stress (45 mg kg(-1) Cd) did not change the soil physicochemical properties but influenced the bacterial community composition compared to control conditions. Notably, the increased abundance of the bacterial phylum Patescibacteria and the dominance of several Cd-tolerant plant growth-promoting rhizobacteria (e.g., Sphingomonas, Gemmatimonas, Bryobacter, Flavisolibacter, Nocardioides, and Bradyrhizobium) likely facilitated Cd tolerance and accumulation in D. pinnata. Comparative transcriptomic analysis showed that Cd significantly induced (P < 0.001) the expression of genes involved in lignin synthesis in D. pinnata roots and leaves, which are likely to fix Cd2+ to the cell wall and inhibit Cd entry into the cytoplasm. Moreover, Cd induced a sophisticated signal transduction network that initiated detoxification processes in roots as well as ethylene synthesis from methionine metabolism to regulate Cd responses in leaves. This study suggests that D. pinnata can be potentially used for phytoextraction and improves our understanding of Cd-response mechanisms in plants from rhizospheric and molecular perspectives. |
| WOS记录号 | WOS:000904915700001 |
| 源URL | [http://ir.kib.ac.cn/handle/151853/75632]  |
| 专题 | 中国科学院昆明植物研究所 |
| 推荐引用方式 GB/T 7714 | Li, Xiong,Li, Boqun,Jin, Tao,et al. Rhizospheric microbiomics integrated with plant transcriptomics provides insight into the Cd response mechanisms of the newly identified Cd accumulator Dahlia pinnata[J]. FRONTIERS IN PLANT SCIENCE,2022,13:1091056. |
| APA | Li, Xiong.,Li, Boqun.,Jin, Tao.,Chen, Huafang.,Zhao, Gaojuan.,...&Xu, Jianchu.(2022).Rhizospheric microbiomics integrated with plant transcriptomics provides insight into the Cd response mechanisms of the newly identified Cd accumulator Dahlia pinnata.FRONTIERS IN PLANT SCIENCE,13,1091056. |
| MLA | Li, Xiong,et al."Rhizospheric microbiomics integrated with plant transcriptomics provides insight into the Cd response mechanisms of the newly identified Cd accumulator Dahlia pinnata".FRONTIERS IN PLANT SCIENCE 13(2022):1091056. |
入库方式： OAI收割
来源：昆明植物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。