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| SbHKT1;4, a member of the high-affinity potassium transporter gene family from Sorghum bicolor, functions to maintain optimal Na+/K+ balance under Na+ stress | |
Wang, Tian-Tian; Ren, Zhi-Jie; Liu, Zhi-Quan; Feng, Xue3; Guo, Rui-Qi; Li, Bao-Guo; Li, Le-Gong; Jing, Hai-Chun
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| 2014 | |
| Source Publication | JOURNAL OF INTEGRATIVE PLANT BIOLOGY
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| ISSN | 1672-9072 |
| Volume | 56Issue:3Pages:315-332 |
| Abstract | In halophytic plants, the high-affinity potassium transporter HKT gene family can selectively uptake K+ in the presence of toxic concentrations of Na+. This has so far not been well examined in glycophytic crops. Here, we report the characterization of SbHKT1;4, a member of the HKT gene family from Sorghum bicolor. Upon Na+ stress, SbHKT1;4 expression was more strongly upregulated in salt-tolerant sorghum accession, correlating with a better balanced Na+/K+ ratio and enhanced plant growth. Heterogeneous expression analyses in mutants of Saccharomyces cerevisiae and Arabidopsis thaliana indicated that overexpressing SbHKT1;4 resulted in hypersensitivity to Na+ stress, and such hypersensitivity could be alleviated with the supply of elevated levels of K+, implicating that SbHKT1;4 may mediate K+ uptake in the presence of excessive Na+. Further electrophysiological evidence demonstrated that SbHKT1;4 could transport Na+ and K+ when expressed in Xenopus laevis oocytes. The relevance of the finding that SbHKT1;4 functions to maintain optimal Na+/K+ balance under Na+ stress to the breeding of salt-tolerant glycophytic crops is discussed. |
| Keyword | High-affinity potassium transporter (HKT) Na+ K+ ratio Na+ stress salt tolerance Sorghum bicolor |
| Subject Area | Biochemistry & Molecular Biology ; Plant Sciences |
| DOI | 10.1111/jipb.12144 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | SALT TOLERANCE ; HKT TRANSPORTERS ; SODIUM-TRANSPORT ; SALINITY TOLERANCE ; K+ TRANSPORT ; PUCCINELLIA-TENUIFLORA ; ARABIDOPSIS-THALIANA ; CATION SELECTIVITY ; RICE OSHKT2/1 ; PLANTS |
| WOS Research Area | Biochemistry & Molecular Biology ; Plant Sciences |
| WOS ID | WOS:000332522600010 |
| Publisher | WILEY |
| Subtype | Article |
| Publication Place | HOBOKEN |
| EISSN | 1744-7909 |
| Funding Organization | One Hundred Talents Program of the Chinese Academy of Sciences [KSCX2-YW-G-067] ; National Science Foundation [Y4643A1001] |
| Corresponding Author Email | lglii@mail.cnu.edu ; hcjing@ibcas.ac.cn |
| OA | Bronze |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ibcas.ac.cn/handle/2S10CLM1/27170 |
| Collection | 中科院北方资源植物重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Bot, Key Lab Plant Resources, Beijing 100093, Peoples R China 2.Capital Normal Univ, Coll Life Sci, Beijing 100048, Peoples R China 3.China Agr Univ, Coll Resources & Environm Sci, Lab Soil & Water, Beijing 100193, Peoples R China 4.E China Normal Univ, Sch Life Sci, Shanghai Key Lab Urbanizat & Ecol Restorat, Shanghai 200062, Peoples R China |
| Recommended Citation GB/T 7714 | Wang, Tian-Tian,Ren, Zhi-Jie,Liu, Zhi-Quan,et al. SbHKT1;4, a member of the high-affinity potassium transporter gene family from Sorghum bicolor, functions to maintain optimal Na+/K+ balance under Na+ stress[J]. JOURNAL OF INTEGRATIVE PLANT BIOLOGY,2014,56(3):315-332. |
| APA | Wang, Tian-Tian.,Ren, Zhi-Jie.,Liu, Zhi-Quan.,Feng, Xue.,Guo, Rui-Qi.,...&Jing, Hai-Chun.(2014).SbHKT1;4, a member of the high-affinity potassium transporter gene family from Sorghum bicolor, functions to maintain optimal Na+/K+ balance under Na+ stress.JOURNAL OF INTEGRATIVE PLANT BIOLOGY,56(3),315-332. |
| MLA | Wang, Tian-Tian,et al."SbHKT1;4, a member of the high-affinity potassium transporter gene family from Sorghum bicolor, functions to maintain optimal Na+/K+ balance under Na+ stress".JOURNAL OF INTEGRATIVE PLANT BIOLOGY 56.3(2014):315-332. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 24325391.pdf（10374KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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