ArticlePlant physiology1996
Role of the Plasma Membrane H+-ATPase in K+ Transport.
Article in Plant physiology, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 33 citations in OpenAlex.
- Overexpression of a Plasma Membrane HInternational journal of molecular sciences · 2022Article
- Nodulating white lupins take advantage of the reciprocal interplay between N and P nutritional responses.Physiologia plantarum · 2022Article
- Integrative transcriptomic and metabolomic analysis of D-leaf of seven pineapple varieties differing in N-P-K% contents.BMC plant biology · 2021Article
- Plasma membrane HNature communications · 2021Article
- Grafting alleviates potassium stress and improves growth in tobacco.BMC plant biology · 2019Article
- Interaction of phenanthrene and potassium uptake by wheat roots: a mechanistic model.BMC plant biology · 2013Article
- Structural identification of cation binding pockets in the plasma membrane proton pump.Proceedings of the National Academy of Sciences of the United States of America · 2010Article
- Electrogenic plasma membrane H+-ATPase activity using voltage sensitive dyes.Journal of bioenergetics and biomembranes · 2010Article
- Adenylate-coupled ion movement. A mechanism for the control of nodule permeability to O2 diffusion.Plant physiology · 2006Article
- Seasonal changes of plasma membrane H(+)-ATPase and endogenous ion current during cambial growth in poplar plants.Plant physiology · 2002Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The role of the plant plasma membrane H+-ATPase in K+ uptake was examined using red beet (Beta vulgaris L.) plasma membrane vesicles and a partially purified preparation of the red beet plasma membrane H+-ATPase reconstituted in proteoliposomes and planar bilayers. For plasma membrane vesicles, ATP-dependent K+ efflux was only partially inhibited by 100 [mu]M vanadate or 10 [mu]M carbonyl cyanide-p-trifluoromethoxyphenylhydrazone. However, full inhibition of ATP-dependent K+ efflux by these reagents occurred when the red beet plasma membrane H+-ATPase was partially purified and reconstituted in proteoliposomes. When reconstituted in a planar bilayer membrane, the current/voltage relationship for the plasma membrane H+-ATPase showed little effect of K+ gradients imposed across the bilayer membrane. When taken together, the results of this study demonstrate that the plant plasma membrane H+-ATPase does not mediate direct K+ transport chemically linked to ATP hydrolysis. Rather, this enzyme provides a driving force for cellular K+ uptake by secondary mechanisms, such as K+ channels or H+/K+ symporters. Although the presence of a small, protonophore-insensitive component of ATP-dependent K+ transport in a plasma membrane fraction might be mediated by an ATP-activated K+ channel, the possibility of direct K+ transport by other ATPases (i.e. K+-ATPases) associated with either the plasma membrane or other cellular membranes cannot be ruled out.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.