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Special Issue "Plasma-Membrane Transport in Plant 2022"

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 1297

Special Issue Editor

Tasmanian Institute of Agriculture, College of Science and Engineering, University of Tasmania, Hobart 7001, Australia
Interests: stress physiology; membrane transport; extreme temperature; salinity stress; drought stress; oxidative stress
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Special Issue Information

Dear Colleagues, 

Biologic membranes are indispensable components of living eukaryotic cells, which separate cytoplasm from the external medium and organelles from the cytoplasm, thus, underlying the unique environment in each of these subcellular compartments. They not only prevent the free movement of molecules, but also underlie a multitude of other essential functions, including nutrient acquisition, signal perception and processing, electrical phenomena, water balance, and ionic homeostasis. Membranes are also central in the perception of external stimuli from a constantly changing environment and the coordination of respective plant responses. Both mineral uptake and signaling are mediated by so-called transport proteins that “occupy” at least 5% of plant genome. These transport proteins are differentially expressed in various membranes and tissues. Numerous electrophysiological and molecular studies have been undertaken to understand how the membrane transport network and its individual components operate. This volume summarizes and reviews some of this work and provides a timely update in the field revealing the role, functional expression patterns, and regulatory modes of some plasma- and organelle-membrane-based cation and anion transporters that enables plant core functions, such as growth, development, and adaptive responses.

Prof. Dr. Sergey Shabala
Guest Editor

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  • membrane
  • organelle
  • plant
  • ion channels
  • ionic homeostasis
  • water balance
  • signal perception
  • signal processing
  • nutrient acquisition
  • electrical phenomena

Published Papers (1 paper)

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Overexpression of a Plasma Membrane H+-ATPase Gene OSA1 Stimulates the Uptake of Primary Macronutrients in Rice Roots
Int. J. Mol. Sci. 2022, 23(22), 13904; https://doi.org/10.3390/ijms232213904 - 11 Nov 2022
Cited by 1 | Viewed by 923
Plasma membrane (PM) H+-ATPase is a master enzyme involved in various plant physiological processes, such as stomatal movements in leaves and nutrient uptake and transport in roots. Overexpression of Oryza sativa PM H+-ATPase 1 (OSA1) has been [...] Read more.
Plasma membrane (PM) H+-ATPase is a master enzyme involved in various plant physiological processes, such as stomatal movements in leaves and nutrient uptake and transport in roots. Overexpression of Oryza sativa PM H+-ATPase 1 (OSA1) has been known to increase NH4+ uptake in rice roots. Although electrophysiological and pharmacological experiments have shown that the transport of many substances is dependent on the proton motive force provided by PM H+-ATPase, the exact role of PM H+-ATPase on the uptake of nutrients in plant roots, especially for the primary macronutrients N, P, and K, is still largely unknown. Here, we used OSA1 overexpression lines (OSA1-oxs) and gene-knockout osa1 mutants to investigate the effect of modulation of PM H+-ATPase on the absorption of N, P, and K nutrients through the use of a nutrient-exhaustive method and noninvasive microtest technology (NMT) in rice roots. Our results showed that under different concentrations of P and K, the uptake rates of P and K were enhanced in OSA1-oxs; by contrast, the uptake rates of P and K were significantly reduced in roots of osa1 mutants when compared with wild-type. In addition, the net influx rates of NH4+ and K+, as well as the efflux rate of H+, were enhanced in OSA1-oxs and suppressed in osa1 mutants under low concentration conditions. In summary, this study indicated that overexpression of OSA1 stimulated the uptake rate of N, P, and K and promoted flux rates of cations (i.e., H+, NH4+, and K+) in rice roots. These results may provide a novel insight into improving the coordinated utilization of macronutrients in crop plants. Full article
(This article belongs to the Special Issue Plasma-Membrane Transport in Plant 2022)
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