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Saturday, August 1, 2020 | History

4 edition of Potassium transporters and plant salt tolerance found in the catalog.

Potassium transporters and plant salt tolerance

Sergey Shabala

Potassium transporters and plant salt tolerance

by Sergey Shabala

  • 111 Want to read
  • 35 Currently reading

Published by International Fertiliser Society in York .
Written in English

    Subjects:
  • Potassium in agriculture -- Congresses,
  • Plants -- Effects of salts on -- Congresses,
  • Fertilizers -- Congresses

  • Edition Notes

    Statementby Sergey Shabala and Tracey A Cuin.
    SeriesProceedings (International Fertiliser Society) -- no. 606
    ContributionsCuin, Tracey A., International Fertiliser Society.
    Classifications
    LC ClassificationsS645 .S53 2007
    The Physical Object
    Pagination36 p. :
    Number of Pages36
    ID Numbers
    Open LibraryOL23626930M
    ISBN 100853102430
    ISBN 109780853102434
    LC Control Number2009459080

      Chen, G. et al. Rice potassium transporter OsHAK1 is essential for maintaining potassium-mediated growth and functions in salt tolerance over low and high potassium concentration ranges. Plant.   Trk/Ktr/HKT transporters probably were evolved from simple K+ channels KcsA. HKT transporters, which mediate Na+-uniport or Na+/K+-symport, maintain K+/Na+ homeostasis and increase salinity tolerance, can be classified into three subfamilies in higher plants. In this review, we systematically analyzed the characteristics of amino acids sequences and physiological functions of HKT transporters.

    their roles in Na+ transport and salt susceptibility. An opposite trend is happening with the CPA families. Originally described as Na +/H exchangers involved in salt tolerance, several CPAs were recently shown to also transport K+. The mechanisms by which plants sense and adapt to a low potassium environment have been reviewed in detail.   Read "SsHKT11 is a potassium transporter of the C3 halophyte Suaeda salsa that is involved in salt tolerance, Functional Plant Biology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

    Journal Article: Sodium-driven potassium uptake by the plant potassium transporter HKT1 and mutations conferring salt tolerance.   Tobacco, an economic crop and important model plant, has received more progress in salt tolerance with the aid of transgenic technique. Salt stress has become a key research field in abiotic stress. The study of tobacco promotes the understanding about the important adjustment for survival in high salinity environments, including cellular ion transport, osmotic regulation, antioxidation.


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Potassium transporters and plant salt tolerance by Sergey Shabala Download PDF EPUB FB2

Recent progress in molecular genetics and plant electrophysiology suggests that the ability of a plant to maintain a high cytosolic K + /Na + ratio appears to be critical to plant salt tolerance. So far, the major efforts of plant breeders have been aimed at improving this ratio by minimizing Na + uptake and transport to by: Potassium transport and plant salt tolerance.

Rubio F, Gassmann W, Schroeder JI. Sodium-driven potassium uptake by the plant potassium transporter HKT1 and mutations conferring salt tolerance. Science. ; – Rubio F, Santa-Maria GE, Rodriguez-Navarro A. Cloning of Arabidopsis and barley cDNAs encoding HAK potassium transporters in root and shoot cells.

Physiologia by:   Functional identification of potassium transporters. In recent years, many novel K + transporters have been functionally identified.

They regulate K + transport and ion homeostasis in plant cells and exhibit diverse physiological functions in K + uptake, photosynthesis, organ development, reproduction, and stress by:   F.

Rubio, W. Gassmann, J.I. SchroederSodium-driven potassium uptake by the plant potassium transporter HKT1 and mutations conferring salt tolerance Science, (), pp. Google ScholarCited by: Shabala S, Cuin TA () Potassium transport and plant salt tolerance.

Physiol Plantar – CrossRef Google Scholar Shabala S, Cuin TA, Pottosin I (a) Polyamines prevent NaCl-induced K + efflux from pea mesophyll by blocking non-selective cation channels.

Sodium (Na+) at high millimolar concentrations in soils is toxic to most higher plants and severely reduces agricultural production worldwide.

However, the molecular mechanisms for plant Na+ uptake remain unknown. Here, the wheat root high-affinity potassium (K+) uptake transporter HKT1 was shown to function as a high-affinity K+-Na+ cotransporter.

The Role of a Potassium Transporter OsHAK5 in Overexpression of OsHAK5 increased the K-sodium concentration ratio in the shoots and salt stress tolerance (shoot growth), while knockout of OsHAK5 decreased the K-sodium concentration ratio in the shoots, resulting in ), implying that functions of plant K channels and transporters.

Class II high-affinity potassium transporters (HKT2s) mediate Na+–K+ cotransport and Na+/K+ homeostasis under K+-starved or saline conditions. Their functions have been studied in yeast and X. laevis oocytes; however, little is known about their respective properties in plant cells.

In this study, we characterized the Na+ and K+ transport properties of SvHKT2;1, SvHKT2;2 and HvHKT2;1 in. PLASMA MEMBRANE SODIUM EXTRUSION. Salt-sensitive SOS mutant loci were identified as essential factors for salt tolerance in Arabidopsis by screening for reduced root bending of seedlings grown in the presence of sodium (Wu et al., ).The sos1, sos2, and sos3 loci have been shown to affect Na + transport and Na + transport regulation.

Detailed phenotyping of sos1 plants revealed. Sodium-driven potassium uptake by the plant potassium transporter HKT1 and mutations conferring salt tolerance.

Science– doi: /science Pubmed Abstract | Pubmed Full Text | CrossRef Full Text. Potassium (K +) and sodium (Na +) that transport within plants have been studied extensively because of their significance in both plant nutrition and salt tolerance (Amtmann et al., Salt stress is a major constraint for many crops and trees.

A wild species of Goji named Lycium ruthenicum is an important economic halophyte in China and has an extremely high tolerance to salinity. ruthenicum grows in saline soil and is known as a potash-rich species.

However, its salt adaptation strategies and ion balance mechanism remains poorly understood. Potassium (K+) is one of the.

A large genetic screen for sos (for salt overly sensitive) mutants was performed in an attempt to isolate mutations in any gene with an sos phenotype.

Our search yielded 28 new alleles of sos1, nine mutant alleles of a newly identified locus, SOS2, and one allele of a third salt tolerance locus, SOS3. The sos2 mutations, which are recessive, were mapped to the lower arm of chromosome V, ~ Plant Physiol.

Nov; (3)– [PMC free article] Rubio F, Gassmann W, Schroeder JI. Sodium-driven potassium uptake by the plant potassium transporter HKT1 and mutations conferring salt tolerance. Science.

Dec 8; ()– Singh. The plant genome contains large number of HAK/KUP/KT transporters, and they show the diverse roles in K + uptake and translocation, salt tolerance and osmotic potential regulation, as well as in controlling root morphology and shoot phenotyping.

Recently, significant progress has been achieved towards uncovering the regulatory mechanisms of HAK. Plant Salt Tolerance. Plant Salt Tolerance pp () The HAK1 gene of barley is a member of a large gene family and encodes a high-affinity potassium transporter.

Plant Cell – PubMed Google Scholar. Bañuelos MA, Garciadeblas B, Cubero B et al () Inventory and functional characterization of the HAK potassium. Sodium-driven potassium uptake by the plant potassium transporter HKTl and mutations conferring salt tolerance () by F Rubio, W Gassman, Schroeder JI Add To MetaCart.

Tools. Sorted by The expression of several salt-inducible genes was superinduced in sos2 plants. The salt tolerance of sos1, sos2, and sos3 mutants correlated with their K. Request PDF | Potassium transport and plant salt tolerance | Salinity is a major abiotic stress affecting approximately 7% of the world's total land area resulting in billion dollar losses in crop.

The intracellular potassium (K(+)) homeostasis, which is crucial for plant survival in saline environments, is modulated by K(+) channels and transporters. Some members of the high-affinity K(+) transporter (HAK) family are believed to function in the regulation of plant salt tolerance, but the physiological mechanisms remain unclear.

Plant roots contain both high- and low-affinity transport systems for uptake of K+ from the soil. In this study, we characterize a K+ transporter that functions in both high- and low-affinity uptake.

Using yeast complementation analysis, we isolated a cDNA for a functional K+ transporter from Arabidopsis (referred to as AtKUP1 for Arabidopsis thaliana K+ uptake).driven potassium uptake by the plant potassium transporter HKT1 and mutations conferring salt tolerance. Science, Rus A, Yokoi S, Sharkhuu A, Reddy M, Lee B-H, Matsumoto TK, Koiwa H, Zhu J-K, Bressan RA and Hasegawa PM Proc.

Natl. Acad. Sci. USA, Schachtman DP Molecular insights into the. POTASSIUM is the most abundant cation in higher plants and is crucial for plant nutrition, growth, tropisms, enzyme homeostasis and osmoregulation1–4.

K+ .