TY - JOUR ID - 125936 TI - An Investigation into the Effects of Cadmium and Nitric Oxide on Induced Secondary Metabolism and Antioxidant System in Pimpinella anisum L. Through Transcriptional Upregulations in AIS1, PAL, SOD, R2R3-MYB, and bZIP Genes JO - Journal of Medicinal plants and By-product JA - JMPB LA - en SN - 2322-1399 AU - Hajbagheri, Sepideh AU - Abbaspour, Hossein AU - Enteshari, Shokoufeh AU - Habibollahi, Saeed AU - Iranbakhsh, Alireza AD - Department of Biology, Damghan Branch, Islamic Azad University, Damghan, Iran AD - Department of Biology, North Tehran Branch, Islamic Azad University, Tehran, Iran AD - Department of Biology, Payame Noor University, Tehran, Iran AD - Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran Y1 - 2022 PY - 2022 VL - 11 IS - 1 SP - 129 EP - 134 KW - Gene expression KW - Heavy metal KW - Pimpinella anisum KW - Secondary metabolism KW - Stress KW - transcription factor DO - 10.22092/jmpb.2022.343254.1220 N2 - This study was aimed to evaluate the cytoprotective role of nitric oxide (NO) against cadmium (Cd) through the potential transcriptional modifications in the expression of genes. Pimpinella anisum seedlings were treated with Cd (0 and 1 mM) and/or NO (0 and 25 µM). The Cd-associated decreases in shoot and root biomass were mitigated by the exogenously applied NO. Proline concentrations were increased in response to NO and/or Cd. Cd and NO treatments caused a considerable increase in peroxidase activities in comparison to the control. The individual Cd treatment led to the slight significant (p≤0.001) up-regulation in expression of R2R3-MYB transcription factor by 2.5 folds, while the simultaneous exposure to NO and Cd stimulated this gene by 7.2 folds (p≤0.0001). With a similar trend, NO significantly (p≤0.0001) upregulated bZIP transcription factor by 5.9 folds in Cd-treated seedlings.  Likewise, upregulation (5.2 folds) in the significant (p≤0.0001) increase in expression of the phenylalanine ammonia-lyase (PAL) gene resulted from the NO+Cd application. Moreover, t-anol/isoeugenol synthase 1 (AIS1) gene was slightly stimulated (p≤0.05) in response to individual NO treatment. However, the Cd treatment resulted in a drastic significant (p≤0.0001) increase in AIS1 expression by 42 folds which was partly declined in the Cd+NO group and reached 22 folds (p≤0.0001). Moreover, the NO+Cd treatment caused significant (p≤0.0001) induction in the transcription of the superoxide dismutase (SOD) gene by 11.3 folds.  The correlation observed among expression patterns of mentioned genes, therefore, highlights the close interplay between the transcription factors, secondary metabolism, and antioxidant system.     UR - https://jmpb.areeo.ac.ir/article_125936.html L1 - https://jmpb.areeo.ac.ir/article_125936_8052367facd02435d77d5e3945dcd339.pdf ER -