Salinity increases the triterpenoid content of a salt secretor and a non-salt secretor mangrove

Protein modelling of triterpene synthase genes from mangrove plants using Phyre2 and Swiss-model

“…Furthermore, previous works have demonstrated that the expression PgTPS terpene synthase increased by salt stress in Panax ginseng [14]. Our previous studies also showed salinity-dependent increases in the content of triterpenes and triterpene synthase gene expression in both secreting and non-secreting mangrove roots and leaves [6][7][8][15][16]. It has been disputed for a long time whether triterpene synthases ensuing different products are discrete proteins or if they are produced post-translational from one gene product to another [3].…”

“…Changes in the membrane lipid composition and properties represent an essential factor in the adaptation to high salt concentration [18]. These observations strongly suggested that the triterpene and triterpene synthase contribute to the salt tolerance of mangrove plants probably by changing the property of the cell membrane [6][7][8].…”

“…Molecular mechanism of salinity tolerance in mangrove plants has been described: the level mRNA of triterpene synthase genes of mangrove leaves and roots increased with increasing salt concentration [6][7][8]. These studies suggested that triterpenes play an essential physiological role in the adaptation of mangroves trees as the self-protecting barrier against the external salt stress.…”

“…Furthermore, a significant proportion of triterpene is found in the external parts of the root and may provide an advance indication for the shielding roles of triterpenoids in mangroves tree species [1]. The invention of several triterpene synthase genes from mangroves [3][4], whose molar ratio is defined by multifunctional OSCs, may be useful to the plant by depiction it more tolerant to the environmental stress, such as salinity stress [3][4]8]. Furthermore, previous works have demonstrated that the expression PgTPS terpene synthase increased by salt stress in Panax ginseng [14].…”

Effect of Drought and Nitrogen on Betulin and Oleanolic Acid Accumulation and OSC Gene Expression in White Birch Saplings

“…Specific plant physiological and biochemical reactions may be observed prominently under specific ecological conditions (Rubio-Wilhelmi et al 2012b). Various environmental factors, including light, temperature, soil, air, and biological factors can affect the levels of secondary metabolites in medicinal plants (Van Arendonk et al 1998;Sanchez et al 2004;Aguirre et al 2006;Maathuis 2009;Basyunia et al 2012;Sicher et al 2012). For example, the barbaloin content in Aloe vera L. var.…”