Journal article Open Access

Friend or Foe? Chloride Patterning in Halophytes

Nadia Bazihizina; Timothy D. Colmer; Tracey Ann Cuin; Stefano Mancuso; Sergey Shabala


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{
  "DOI": "10.1016/j.tplants.2018.11.003", 
  "author": [
    {
      "family": "Nadia Bazihizina"
    }, 
    {
      "family": "Timothy D. Colmer"
    }, 
    {
      "family": "Tracey Ann Cuin"
    }, 
    {
      "family": "Stefano Mancuso"
    }, 
    {
      "family": "Sergey Shabala"
    }
  ], 
  "issued": {
    "date-parts": [
      [
        2019, 
        2, 
        1
      ]
    ]
  }, 
  "abstract": "<p>In this opinion article, we challenge the traditional view that breeding for reduced Cl<sup>-</sup>&nbsp;uptake would benefit plant salinity tolerance. A negative correlation between shoot Cl<sup>-</sup>&nbsp;concentration and plant biomass does not hold for halophytes - naturally salt tolerant species. We argue that, under physiologically relevant conditions, Cl<sup>-</sup>&nbsp;uptake requires plants to invest metabolic energy, and that the poor selectivity of Cl<sup>-</sup>-transporting proteins may explain the reported negative correlation between Cl<sup>-</sup>&nbsp;accumulation and crop salinity tolerance. We propose a new paradigm: salinity tolerance could be achieved by improving the selectivity of some of the broadly selective anion-transporting proteins (e.g., for NO<sub>3</sub><sup>-</sup>&gt;Cl<sup>-</sup>), alongside tight control of Cl<sup>-</sup>&nbsp;uptake, rather than targeting traits mediating its efflux from the root.</p>", 
  "title": "Friend or Foe? Chloride Patterning in Halophytes", 
  "type": "article-journal", 
  "id": "2558332"
}
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