Salicylic Acid Signalling in Plants 2022
A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".
Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 3759
Special Issue Editor
Interests: abiotic stress; photosynthesis; plants
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
Salicylic acid (SA) is ubiquitously distributed in the whole plant kingdom. The basal level of SA differs widely among species. It is generally present either in the free state or in the form of glycosylated, methylated, glucose ester, or amino acid conjugates. In plants, SA can be synthesized via two distinct and compartmentalized enzymatic pathways, both requiring the primary metabolite chorismate. L-phenylalanine, derived from chorismate, can be converted into SA via the precursors free benzoic acid, benzoyl glucose, or ortho-hydroxy-cinnamic acid, depending on the plant species. Chorismate can also be converted into SA via isochorismate. Several physiological processes in which SA may play a role have been reported, including seed germination, growth regulation, flower induction, thermogenesis, and, in particular, the regulation of plant responses under biotic or abiotic stress conditions. SA may be involved in different signaling processes. For example, various hormones involved in plant defense mechanisms cross-talk with SA, and both negative and positive interactions have been reported. SA signaling also leads to the reprogramming of gene expression and protein synthesis. It may affect the antioxidative metabolism, and it modulates cellular redox homeostasis. Although the therapeutic effect of SA in humans has been well-studied for about 200 years, its role in plants has only been recognized in recent decades, and the full picture is still not clear. In spite of the extensive work on SA-related processes, the exact mode of action is poorly understood.
Papers submitted to this Special Issue must report high-novelty results and/or new models on the mode of action of SA in plants. The molecular mechanism(s) of SA-related signaling processes, new results of the synthesis of SA, and the role of other related molecules (precursors, conjugated forms, etc.) are also of interest. Research articles and review papers are also welcome.
Prof. Dr. Tibor Janda
Guest Editor
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Keywords
- acclimation
- biosynthesis
- cross talk
- hormones
- phenolics
- plant growth and development
- plant stress
- salicylic acid signalling
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