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2023
Journal article
Revisiting an ecophysiological oddity: Hydathode‐mediated foliar water uptake in Crassula species from southern Africa.
Hydathodes are usually associated with water exudation in plants. However, foliar water uptake (FWU) through the hydathodes has long been suspected in the leaf‐succulent genus (Crassulaceae), a highly diverse group in southern Africa, and, to our knowledge, no empirical observations exist in the literature that unequivocally link FWU to hydathodes... -
2023
Journal article
Cell wall polysaccharide and glycoprotein content tracks growth‐form diversity and an aridity gradient in the leaf‐succulent genus.
Cell wall traits are believed to be a key component of the succulent syndrome, an adaptive syndrome to drought, yet the variability of such traits remains largely unknown. In this study, we surveyed the leaf polysaccharide and glycoprotein composition in a wide sampling of species that occur naturally along an... -
2022
Journal article
Are cell wall traits a component of the succulent syndrome?
Succulence is an adaptation to low water availability characterised by the presence of water-storage tissues that alleviate water stress under low water availability. The succulent syndrome has evolved convergently in over 80 plant families and is associated with anatomical, physiological and biochemical traits. Despite the alleged importance of cell wall...Fradera-Soler, Marc ; Leverett, Alistair ; Mravec, Jozef ; Jørgensen, Bodil ; Borland, Anne M. …
Plant diversity, Succulence, Glycomics, Cell walls, Turgor, CoMPP, and Cell wall elasticity
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2022
Journal article
Elastic and collapsible: current understanding of cell walls in succulent plants.
Succulent plants represent a large functional group of drought-resistant plants which store water in specialized tissues. Several co-adaptive traits accompany water-storage capacity to constitute the succulent syndrome. A widely reported anatomical adaptation of cell walls in succulent tissues allows them to fold in a regular fashion during extended drought, thus... -
2019
Journal article
Dynamics of intracellular mannan and cell wall folding in the drought responses of succulent Aloe species
Plants have evolved a multitude of adaptations to survive extreme conditions. Succulent plants have the capacity to tolerate periodically dry environments, due to their ability to retain water in a specialized tissue, termed hydrenchyma. Cell wall polysaccharides are important components of water storage in hydrenchyma cells. However, the role of...Ahl, Louise ; Mravec, Jozef ; Jørgensen, Bodil ; Rudall, Paula ; Rønsted, Nina …
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2019
Journal article
Detection of seasonal variation in Aloe polysaccharides using carbohydrate detecting microarrays
Aloe vera gel is a globally popular natural product used for the treatment of skin conditions. Its useful properties are attributed to the presence of bioactive polysaccharides. Nearly 25% of the 600 species in the genus Aloe are used locally in traditional medicine, indicating that the bioactive components in Aloe...Ahl, Louise ; Al-Husseini, Narjes ; Al-Helle, Sara ; Staerk, Dan ; Grace, Olwen …