ArticlePlant physiology2013
Reduced tonoplast fast-activating and slow-activating channel activity is essential for conferring salinity tolerance in a facultative halophyte, quinoa.
Article in Plant physiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.
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47 citing papers in PubMed.
- Dissecting the ROS signalling component of salinity tolerance: tissue-specific K+/Na+ homeostasis in quinoa and spinach roots.Journal of experimental botany · 2026Article
- Article
- ZxNHX1 from a xerophyte outperforms AtNHX1 in sequestering NaPlant biotechnology journal · 2025Article
- Can quinoa (Frontiers in plant science · 2025Review
- Potassium homeostasis and signalling: from the whole plant to the subcellular level.Quantitative plant biology · 2025Review
- Quinoa: A Promising Crop for Resolving the Bottleneck of Cultivation in Soils Affected by Multiple Environmental Abiotic Stresses.Plants (Basel, Switzerland) · 2024Review
- Structure, ultrastructure and cation accumulation in quinoa epidermal bladder cell complex under high saline stress.Protoplasma · 2024Article
- The epidermal bladder cell-free mutant of the salt-tolerant quinoa challenges our understanding of halophyte crop salinity tolerance.The New phytologist · 2022Article
- Similar Responses of Relatively Salt-Tolerant Plants to Na and K during Chloride Salinity: Comparison of Growth, Water Content and Ion Accumulation.Life (Basel, Switzerland) · 2022Article
- Salicylic Acid Manipulates Ion Accumulation and Distribution in Favor of Salinity Tolerance inInternational journal of environmental research and public health · 2022Article
- A Comparison of the Effect of Lead (Pb) on the Slow Vacuolar (SV) and Fast Vacuolar (FV) Channels in Red Beet (International journal of molecular sciences · 2021Article
- Adaptive Mechanisms of Halophytes and Their Potential in Improving Salinity Tolerance in Plants.International journal of molecular sciences · 2021Review
- Functions and structure of roots and their contributions to salinity tolerance in plants.Breeding science · 2021Article
- Virus-Mediated Transient Expression Techniques Enable Functional Genomics Studies and Modulations of Betalain Biosynthesis and Plant Height in Quinoa.Frontiers in plant science · 2021Article
- 5-Aminolevulinic Acid Improves Morphogenesis and NaFrontiers in plant science · 2021Article
- The genotype-dependent phenotypic landscape of quinoa in salt tolerance and key growth traits.DNA research : an international journal for rapid publication of reports on genes and genomes · 2020Article
- Effect of Auxin (IAA) on the Fast Vacuolar (FV) Channels in Red Beet (International journal of molecular sciences · 2020Article
- Comparative physiological and biochemical mechanisms of salt tolerance in five contrasting highland quinoa cultivars.BMC plant biology · 2020Article
- Ionic selectivity and coordinated transport of NaPlanta · 2019Article
- Quinoa Abiotic Stress Responses: A Review.Plants (Basel, Switzerland) · 2018Review
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4 authors.
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Abstract
Halophyte species implement a "salt-including" strategy, sequestering significant amounts of Na(+) to cell vacuoles. This requires a reduction of passive Na(+) leak from the vacuole. In this work, we used quinoa (Chenopodium quinoa) to investigate the ability of halophytes to regulate Na(+)-permeable slow-activating (SV) and fast-activating (FV) tonoplast channels, linking it with Na(+) accumulation in mesophyll cells and salt bladders as well as leaf photosynthetic efficiency under salt stress. Our data indicate that young leaves rely on Na(+) exclusion to salt bladders, whereas old ones, possessing far fewer salt bladders, depend almost exclusively on Na(+) sequestration to mesophyll vacuoles. Moreover, although old leaves accumulate more Na(+), this does not compromise their leaf photochemistry. FV and SV channels are slightly more permeable for K(+) than for Na(+), and vacuoles in young leaves express less FV current and with a density unchanged in plants subjected to high (400 mm NaCl) salinity. In old leaves, with an intrinsically lower density of the FV current, FV channel density decreases about 2-fold in plants grown under high salinity. In contrast, intrinsic activity of SV channels in vacuoles from young leaves is unchanged under salt stress. In vacuoles of old leaves, however, it is 2- and 7-fold lower in older compared with young leaves in control- and salt-grown plants, respectively. We conclude that the negative control of SV and FV tonoplast channel activity in old leaves reduces Na(+) leak, thus enabling efficient sequestration of Na(+) to their vacuoles. This enables optimal photosynthetic performance, conferring salinity tolerance in quinoa species.
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