TY - JOUR
AU1 - Fortini, Evandro Alexandre
AU2 - Batista, Diego Silva
AU3 - Felipe, Sérgio Heitor Sousa
AU4 - Silva, Tatiane Dulcineia
AU5 - Correia, Ludmila Nayara Freitas
AU6 - Farias, Letícia Monteiro
AU7 - Faria, Daniele Vidal
AU8 - Pinto, Vitor Batista
AU9 - Santa-Catarina, Claudete
AU1 - Silveira, Vanildo
AU1 - De-la-Peña, Clelia
AU1 - Castillo-Castro, Eduardo
AU1 - Otoni, Wagner Campos
AB - Plants adjust their complex molecular, biochemical, and metabolic processes to overcome salt stress. Here, we investigated the proteomic and epigenetic alterations involved in the morphophysiological responses of Pfaffia glomerata, a medicinal plant, to salt stress and the demethylating agent 5-azacytidine (5-azaC). Moreover, we investigated how these changes affected the biosynthesis of 20-hydroxyecdysone (20-E), a pharmacologically important specialized metabolite. Plants were cultivated in vitro for 40 days in Murashige and Skoog medium supplemented with NaCl (50 mM), 5-azaC (25 μM), and NaCl + 5-azaC. Compared with the control (medium only), the treatments reduced growth, photosynthetic rates, and photosynthetic pigment content, with increase in sucrose, total amino acids, and proline contents, but a reduction in starch and protein. Comparative proteomic analysis revealed 282 common differentially accumulated proteins involved in 87 metabolic pathways, most of them related to amino acid and carbohydrate metabolism, and specialized metabolism. 5-azaC and NaCl + 5-azaC lowered global DNA methylation levels and 20-E content, suggesting that 20-E biosynthesis may be regulated by epigenetic mechanisms. Moreover, downregulation of a key protein in jasmonate biosynthesis indicates the fundamental role of this hormone in the 20-E biosynthesis. Taken together, our results highlight possible regulatory proteins and epigenetic changes related to salt stress tolerance and 20-E biosynthesis in P. glomerata, paving the way for future studies of the mechanisms involved in this regulation.
TI - Physiological, epigenetic, and proteomic responses in Pfaffia glomerata growth in vitro under salt stress and 5-azacytidine
JF - PROTOPLASMA
DO - 10.1007/s00709-022-01789-4
DA - 2023-03-01
UR - https://www.deepdyve.com/lp/springer-journals/physiological-epigenetic-and-proteomic-responses-in-pfaffia-glomerata-eaCKBq4GMQ
SP - 467
EP - 482
VL - 260
IS - 2
DP - DeepDyve
ER -