Abstract
Salinity stress is perceived as one of the major threats to agriculture as it can cause irreversible damage to some of the physiological and molecular processes such as photosynthesis, gene expression, protein folding, and cell signaling at any developmental stage of the plant. However, halophytes have evolved various structural, physiological, anatomical, and molecular modifications enabling them to carry out normal physiological and molecular processes even under hypersaline conditions and thus enabling their survival. Survival strategies of halophytes began right from the step of germination by adopting dimorphic seeds until the seed dispersal through vivipary means. Some coastal halophytes such as mangroves modify by developing pneumatophores root for aeration, buttress, knee, and slit root for anchoring firmly in the sandy soil. Additionally, accumulation of stress-responsive proteins, metabolites, organic compounds, expression of stress-responsive genes, and tight regulation of physiological functions such as photosynthesis, ion homeostasis, and ROS regulation have been reported in halophytes conferring to its adaptation. Understanding this adaptability mechanism of halophytes can provide a valuable genetic resource for improving salt tolerance in glycophytes. Additionally, delineating the suite of genes regulating tolerance mechanism of halophytes under saline conditions using various omics approaches can be extremely useful in designing food crops to feed the burgeoning population under extreme climatic conditions.
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Acknowledgments
SW and NR acknowledge UGC (University Grants Commission, Government of India) and the Department of Biotechnology (DBT) for providing fellowship during their research work. Research in the Lab of AP is supported by funding from the Indo-US Science and Technology Forum (IUSSTF) for Indo-US Advanced Bioenergy Consortium (IUABC), and UPOE-II, Jawaharlal Nehru University, New Delhi.
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Wungrampha, S., Rawat, N., Singla-Pareek, S.L., Pareek, A. (2021). Survival Strategies in Halophytes: Adaptation and Regulation. In: Grigore, MN. (eds) Handbook of Halophytes. Springer, Cham. https://doi.org/10.1007/978-3-030-57635-6_56
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DOI: https://doi.org/10.1007/978-3-030-57635-6_56
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