Advances in Halophyte Salinity Tolerance
A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Physiology and Metabolism".
Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 8541
Special Issue Editors
Interests: salinity stress; halophytes; abiotic stress tolerance; ion transport; water relations; gas exchanges; dryland agriculture
Special Issue Information
Dear Colleagues,
Halophytes are an exciting group of plants that not only present an elevated tolerance to salinity, thriving in salt concentrations that can damage most other angiosperms, but often also have a combined tolerance to other abiotic stresses as their habitats are often prone to flooding, drought, and high temperatures. To date, studies on halophytes have played a vital role in the recognition of key mechanisms (e.g., from the role of improved early signaling and differential hormonal regulation to the use of Na and Cl as a ‘cheap osmoticum’) involved in salt tolerance. Furthermore, comparative studies of halophytes vs. glycophytes have revealed that the former are well equipped with cross-tolerance mechanisms and that, in these salt-loving plants, tolerance is generally a constitutive trait. While the last couple of decades witnessed a considerable expansion of our understanding of the different mechanisms underlying salt tolerance and the various factors influencing/determining responses to salinity (both in glycophytes and halophytes), questions and challenges related to this fascinating field still exist. These range from an understanding of the economics of salt tolerance and the limits of the different strategies (‘exclusion’ vs. tissue tolerance) across the tolerance continuum, the complex networks of signal perception and signaling cascades responsible for plant growth/development adjustments, and the adaption to salinity stress, to how temporal and spatial heterogeneity in soil salinity and its interaction with other abiotic stressors, such as nutrient deficiencies, drought, and waterlogging, affect the plant’s overall performance. Simultaneously, there is also a need for studies to evaluate the improvement of agricultural traits (such as yield, palatability, chemical composition, and mechanical harvesting) for the establishment and development of a halophyte-based agriculture in saline resources. Therefore, this Special Issue welcomes articles (original research papers, perspectives, hypotheses, opinions, reviews, modeling approaches, and methods) that focus on the responses of halophytes to salinity at all levels (from cellular to whole plant levels), comprising the responses to uniform and/or heterogeneous salinities, interactions with other stresses (e.g., nutrient and water availability), and the assessment/evaluation of cultivation systems and applications that facilitate the agricultural and industrial use of halophytes.
Dr. Nadia Bazihizina
Dr. Giulia Atzori
Guest Editors
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Keywords
- halophyte
- biosaline agriculture
- plant nutrition
- salt stress physiology
- alternative cash crops
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