ArticleMolecular biotechnology2011
Ectopic expression of the K+ channel β subunits from Puccinellia tenuiflora (KPutB1) and rice (KOB1) alters K+ homeostasis of yeast and Arabidopsis.
Article in Molecular biotechnology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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15 citing papers in PubMed, 25 citations in OpenAlex.
- Adaptive Strategy of the Perennial Halophyte GrassPlants (Basel, Switzerland) · 2024Article
- Halophytes as new model plant species for salt tolerance strategies.Frontiers in plant science · 2023Review
- The Sweetpotato Voltage-Gated KGenes · 2022Article
- Genome-wide DNA methylation analysis and biochemical responses provide insights into the initial domestication of halophyte Puccinellia tenuiflora.Plant cell reports · 2021Article
- Comparative Genomics and Transcriptomics of the Extreme HalophyteFrontiers in plant science · 2021Article
- Genome of extreme halophyte Puccinellia tenuiflora.BMC genomics · 2020Article
- Review
- Na2CO3-responsive mechanisms in halophyte Puccinellia tenuiflora roots revealed by physiological and proteomic analyses.Scientific reports · 2016Article
- A Chloroplast-Localized Rubredoxin Family Protein Gene from Puccinellia tenuiflora (PutRUB) Increases NaCl and NaHCO₃ Tolerance by Decreasing H₂O₂ Accumulation.International journal of molecular sciences · 2016Article
- Transcriptional responses of a bicarbonate-tolerant monocot, Puccinellia tenuiflora, and a related bicarbonate-sensitive species, Poa annua, to NaHCO3 stress.International journal of molecular sciences · 2014Article
- Physiological and molecular mechanisms of plant salt tolerance.Photosynthesis research · 2013Review
- Comparative proteomic analysis of Puccinellia tenuiflora leaves under Na2CO3 stress.International journal of molecular sciences · 2013Article
- Molecular cloning and characterization of plasma membrane- and vacuolar-type Na⁺/H⁺ antiporters of an alkaline-salt-tolerant monocot, Puccinellia tenuiflora.Journal of plant research · 2012Article
- A U-Box E3 ubiquitin ligase, PUB20, interacts with the Arabidopsis G-protein β subunit, AGB1.PloS one · 2012Article
- Exploration for the salt stress tolerance genes from a salt-treated halophyte, Suaeda asparagoides.Plant cell reports · 2012Article
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In this study, we cloned a cDNA for the K+ channel β subunit from the halophyte Puccinellia tenuiflora and named it KPutB1. KPutB1 was preferentially expressed in the roots and was transiently induced by K+-starvation, salt stress, or the combination of both stresses. By yeast two-hybrid assay, we demonstrated that KPutB1 interacts with PutAKT1, α subunit of an AKT1-type K+ channel of P. tenuiflora. The functional relevance of this interaction on K+-nutrition was investigated by co-expression experiments in yeast under various ionic conditions, and K+ channel α and β subunit homologues from rice (OsAKT1 and KOB1, respectively) were included for comparison. Yeast co-expressing PutAKT1 and the β subunits (KPutB1 and KOB1) had better growth and higher K+-uptake ability than yeast expressing PutAKT1 alone. In contrast, yeast co-expressing the β subunits (KPutB1 and KOB1) with OsAKT1 had slower growth and lower K+ uptake than yeast expressing OsAKT1 alone. Arabidopsis plants over-expressing the K+ channel β subunit of P. tenuiflora or rice showed increased shoot K+ content and decreased root Na+ content under control, 75 mM NaCl, and K+-starvation stress conditions. These results suggest that ectopic expression of the K+ channel β subunit could alter K+ and Na+ homeostasis in plants.
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