Nitric oxide and selenium nanoparticles confer changes in growth, metabolism, antioxidant machinery, gene expression, an
- PDF / 1,727,811 Bytes
- 13 Pages / 595.276 x 790.866 pts Page_size
- 34 Downloads / 202 Views
RESEARCH ARTICLE
Nitric oxide and selenium nanoparticles confer changes in growth, metabolism, antioxidant machinery, gene expression, and flowering in chicory (Cichorium intybus L.): potential benefits and risk assessment Sara Abedi 1 & Alireza Iranbakhsh 1
&
Zahra Oraghi Ardebili 2 & Mostafa Ebadi 3
Received: 8 February 2020 / Accepted: 1 September 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract This experiment was conducted to provide a better insight into the plant responses to nitric oxide (NO) and selenium nanoparticle (nSe). Chicory seedlings were sprayed with nSe (0, 4, and 40 mg l−1), and/or NO (0 and 25 μM). NO and/or nSe4 improved shoot and root biomass by an average of 32%. The nSe40 adversely influenced shoot and root biomass (mean = 26%), exhibiting moderate toxicity partly relieved by NO. The nSe and NO treatments transcriptionally stimulated the dehydration response element B1A (DREB1A) gene (mean = 29.6-fold). At the transcriptional level, nSe4 or NO moderately upregulated phenylalanine ammonia-lyase (PAL) and hydroxycinnamoyl-CoA quinate transferase (HCT1) genes (mean = sevenfold). The nSe4 + NO, nSe40, and nSe40 + NO groups drastically induced the expression of PAL and HCT1 genes (mean = 30-fold). With a similar trend, hydroxycinnamoyl-CoA Quinate/shikimate hydroxycinnamoyl transferase (HQT1) gene was also upregulated in response to nSe and/or NO (mean = 25-fold). The activities of nitrate reductase and catalase enzymes were also induced in the nSe- and/or NO-treated seedlings. Likewise, the application of these supplements associated with an increase in ascorbate concentration (mean = 31.5%) reduced glutathione (mean = 35%). NO and/or nSe enhanced the PAL activity (mean = 36.4%) and soluble phenols (mean = 40%). The flowering was also influenced by the supplements in dose and compound dependent manner exhibiting the long-time responses. It appears that the nSe-triggered signaling can associate with a plethora of developmental, physiological, and molecular responses at least in part via the fundamental regulatory roles of transcription factors, like DREB1A as one the most significant genes for conferring tolerance in crops. Keywords Chicory . DREB1A transcription factor . HCT1 . HQT1 . Nitric oxide . Selenium nanoparticles . Toxicity
Introduction Severe environmental conditions and various pollutants reduce plant growth rate and yield. Hence, diverse strategies Responsible Editor: Gangrong Shi * Alireza Iranbakhsh [email protected] 1
Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
2
Department of Biology, Garmsar Branch, Islamic Azad University, Garmsar, Iran
3
Department of Biology, Damghan Branch, Islamic Azad University, Damghan, Iran
have been employed to find a novel procedure to improve nutritional status, stress tolerance, primary metabolism, secondary metabolism, yield, and biofortification in crops, and industrial/medicinal plants. In this regard, the exogenous utilization of selenium (Se) or nitric oxide
Data Loading...
