Review Article

Perspectives on Structural, Physiological, Cellular, and Molecular Responses to Desiccation in Resurrection Plants

Table 4


Name of the metabolitesRole of metabolites during desiccation in plantsReferences

Carbohydrates: sucrose, raffinose, maltose, verbascose, stachyose, arbutin, glucosylglycerol, trehalose, and glucoseReplacing water on membranes and macromolecules by formation of anhydrous glass vitrification of the cytoplasm filling and stabilization of vacuoles and membrane proteins[44, 52, 129, 172175]

Amino acids: glutamate, glutamine, arginine, citrulline, aspartate, asparagine, N-6-trimethyllysine, and trans-4-hydroxyproline, and the intermediate metabolites 3-(3-hydroxyphenyl)propionate and the tripeptide ophthalmate (L-Y-glutamyl-L-α-aminobutyrylglycine), quinate, γ-glutamyl, tryptophan, and the derivatives acetyltryptophan or phenylalanineBiosynthetic precursors for primary and secondary metabolites[34, 161, 170, 176]
These amino acids could function as compatible solutes or as mobile nitrogen reserves for the rehydrating tissues
Activation of the shikimate pathway which can result in the synthesis of antioxidants

Nucleotide metabolites: allantoin, 1-methyladenosine, uridine 5′-monophosphate, and inosinePlant stress protection by influencing ABA production, purine catabolism, and quenching ROS[170, 176]

Lipids: phosphatidylinositol, phosphatidic acid, lysolipids, fatty acids, choline phosphate, and lipoxygenaseMaintenance of membrane integrity and maintenance of membrane fluidity to allow for recovery after dehydration[122, 129, 176, 177]

Polyamines: spermidine and spermineMembrane stabilization, enzyme activity modulation, plant growth and development, nitrogen assimilation, and respiratory metabolism. Protect ion of macromolecules[178, 179]

Antioxidants: superoxide dismutase, catalase, ascorbate peroxidase, glutathione, etc.Detoxify the ROS which arises during desiccation stress[16, 156, 176]