Plant Salinity Stress: Many Unanswered Questions Remain
By S. Isayenkov, F. Maathuis. Frontiers in Plant Science, 2019
981 citations recorded by the source corpus.
Salinity is a major threat to modern agriculture causing inhibition and impairment of crop growth and development. Here, we not only review recent advances in salinity stress research in plants but also revisit some basic perennial questions that still remain unanswered. In this review, we analyze the physiological, biochemical, and molecular aspects of Na+ and Cl− uptake, sequestration, and transport associated with salinity. We discuss the role and importance of symplastic versus apoplastic pathways for ion uptake and critically evaluate the role of different types of membrane transporters in Na+ and Cl− uptake and intercellular and intracellular ion distribution. Our incomplete knowledge regarding possible mechanisms of salinity sensing by plants is evaluated. Furthermore, a critical evaluation of the mechanisms of ion toxicity leads us to believe that, in contrast to currently held ideas, toxicity only plays a minor role in the cytosol and may be more prevalent in the vacuole. Lastly, the multiple roles of K+ in plant salinity stress are discussed.
Subfields: Plant Science
View Paper: https://www.semanticscholar.org/paper/74ab5c73f4a51ad1cc7c35af65894b2d6502b66a
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Citations in the corpus
- Plant abiotic stress response and nutrient use efficiency (2020, background): “In addition to the HKT-type transporters, cyclic nucleotidegated channels (CNGCs) have been proposed to mediate Na+ influx transport (Isayenkov and Maathuis, 2019).”
- Abiotic Stress in Plants; Stress Perception to Molecular Response and Role of Biotechnological Tools in Stress Resistance (2021, background): “The tissue-specific tolerance is achieved by translocation of toxic ions to the vacuole to avoid their detrimental effects on cytoplasmic-based metabolic processes [43].”