期刊
TRENDS IN PLANT SCIENCE
卷 24, 期 2, 页码 142-151出版社
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tplants.2018.11.003
关键词
-
资金
- Marie Curie Fellowship [700001]
- Marie Curie Actions (MSCA) [700001] Funding Source: Marie Curie Actions (MSCA)
In this opinion article, we challenge the traditional view that breeding for reduced Cl- uptake would benefit plant salinity tolerance. A negative correlation between shoot Cl- concentration and plant biomass does not hold for halophytes - naturally salt tolerant species. We argue that, under physiologically relevant conditions, Cl- uptake requires plants to invest metabolic energy, and that the poor selectivity of Cl--transporting proteins may explain the reported negative correlation between Cl- 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 NO3- > Cl-), alongside tight control of Cl- uptake, rather than targeting traits mediating its efflux from the root.
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