A review of the role of metabolites in vegetative desiccation tolerance of angiosperms.

Halford Jw Dace, Ademola E Adetunji, John P Moore, Jill M Farrant, Henk Wm Hilhorst

Journal: Current opinion in plant biology 2023;75():102410

PMID: 37413962

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Abstract

The survival of extreme water deficit stress by tolerant organisms requires a coordinated series of responses, including those at cellular, transcriptional, translational and metabolic levels. Small molecules play a pivotal role in creating the proper chemical environment for the preservation of cellular integrity and homeostasis during dehydration. This review surveys recent insights in the importance of primary and specialised metabolites in the response to drying of angiosperms with vegetative desiccation tolerance, i.e. the ability to survive near total loss of water. Important metabolites include sugars such as sucrose, trehalose and raffinose family of oligosaccharides, amino acids and organic acids, as well as antioxidants, representing a common core mechanism of desiccation tolerance. Additional metabolites are discussed in the context of species specificity and adaptation.

Address: Laboratory of Plant Physiology, Wageningen University and Research, The Netherlands.; Department of Molecular and Cell Biology, University of Cape Town, South Africa.; South African Grape and Wine Research Institute, Department of Viticulture and Oenology, Stellenbosch University, South Africa.; Department of Molecular and Cell Biology, University of Cape Town, South Africa. Electronic address: [email protected].; Laboratory of Plant Physiology, Wageningen University and Research, The Netherlands; Department of Molecular and Cell Biology, University of Cape Town, South Africa. Electronic address: [email protected].

DOI: 10.1016/j.pbi.2023.102410

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MeSH Terms: Desiccation, Magnoliopsida, Dehydration, Water, Sugars