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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    "description": "<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>", 
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    "title": "Friend or Foe? Chloride Patterning in Halophytes", 
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        "title": "Understanding Halophytes for an Agriculture Worth its Salt", 
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    "keywords": [
      "Ca(2+) signalling", 
      "efflux", 
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