Plant Peptide Hormones in Salt and Drought Stress Tolerance
Diğer yayınlar > Diğer · 2026
Yazarlar: Tülay Alp Öztürk, Melike Bor
Diğer, Uluslararası, 2026, ss 413-430,
Özet
Salt and drought stresses, which cause negative effects on plants, are among the important environmental problems and due to their sessile nature, they have to cope with them through complex mechanisms. Recently identified peptide hormones and related signaling pathways were proposed to be among these stress-coping processes and their mode of action has yet to be defined more precisely for their potential in sustainable agricultural practices under changing climate conditions. Plant peptide hormones are classified as conventional (precursor protein derived) and nonconventional (nonprecursor protein derived) peptides and they are proposed to be important for inter- or intracellular communication both under normal and abiotic stress conditions. Although several studies indicated the importance of these molecules in long-distance signaling, further elucidation is required not only on their functions but also on how they interact with different signaling routes. Under drought and salt stress conditions, growth is adversely affected due to impaired photosynthesis, increased osmotic potential, and imbalanced nutrient uptake. Manipulating abiotic stress responses by peptide hormones has a high potential to provide a solution for growth inhibition under abiotic stress conditions. However, exogenous peptide hormone treatments would not be rational under field conditions and the information gathered from model plants does not always reflect the same response by means of yield under stress conditions in crop plants. In this chapter, recent studies and new approaches on the functions of plant peptides under drought and salt stress conditions, their interactions with different stress defense mechanisms and their potential in sustainable agriculture are discussed.