Role of Jasmonic and Salicylic Acid on Enzymatic Changes in the Root of Two Alyssum inflatum Náyr. Populations Exposed to Nickel Toxicity

Abstract

Salicylic acid (SA) and jasmonic acid (JA) as plant growth regulators (PGRs) have the potential to ameliorate plant development and tolerance to deleterious effects of toxic metals like nickel (Ni). Therefore, the current study was carried out to evaluate SA and JA's interactive effect on the root antioxidative response of two Alyssum in atum Nyár. populations against Ni-toxicity. Two A. in atum species under Ni-stress conditions (0, 100, 200, and 400 µM) were exposed to alone or combined levels of SA (0, 50, and 200 µM) and JA (0, 5, and 10 µM) treatments. Results showed that high Ni doses reduced the roots fresh weight (FW) in two populations than control; however, the use of external PGRs had ameliorated roots biomass by mitigated Ni-toxicity. Under Ni toxicity, SA and JA, especially their combination, induced high Ni accumulation in plants' roots. Moreover, the application of SA and JA alone, as well as combined SA + JA, was found to be effective in the scavenging of hydrogen peroxide (H 2 O 2 ) by improving the activity of superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), and ascorbate peroxidase (APX) in both populations under Ni-toxicity. Overall, our results manifest that SA and JA's external use, especially combined SA + JA treatments, ameliorate root biomass and plant tolerance by restricting translocation Ni to the shoot, accumulating in roots, and also enhancing antioxidant defense systems.

The comparative effects of manganese nanoparticles and their counterparts (bulk and ionic) in Artemisia annua plants via seed priming and foliar application

“…Antioxidant enzymes have been mainly reported to be the first line of defensive and protective mechanisms against any environmental factor such as abiotic stresses ( Lei et al., 2022 ; Mittler et al., 2022 ; Najafi-Kakavand et al., 2022 ; Rahman et al., 2022 ; Raza et al., 2022a ; Raza et al., 2022b ; Shahid et al., 2022 ; Shaukat et al., 2022 ; Bhardwaj et al., 2023 ). At first, the superoxide radicals are converted to H 2 O 2 by SOD activity which can be further decomposed into H 2 O by CAT and peroxidases ( Hasanuzzaman et al., 2020 ).…”

Salicylic acid and jasmonic acid-mediated different fate of nickel phytoremediation in two populations of Alyssum inflatum Nyár.

“…Seeds of Alyssum inflatum Nyár. of the M population were collected from serpentine sites in Marivan (35 ° 13.625′ N; 46 ° 27.184′ E), and the seeds of NM populations were gathered from non-serpentine of Shahu sites (34 ° 56′ 47′′ N; 46 ° 27′ 41′′ E), respectively from West of Iran in summer of 2015 10 by Naser Karimi (Department of Biology, Razi University, Kermanshah, Iran) according to the institutional, national and international guidelines and laws. The permission to collect plants (license code: IR.KUMS.REC.1401.512) was obtained from the Pharmaceutical Sciences Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran, which identifies the institutional licensing committee that approves the collection of plants and experiments, including any relevant details.…”

“…has been identified as a Ni-hyperaccumulating plant native to the Ni-rich serpentine regions of Western Iran. 10 , 11 . For the first time, Ghaderian et al (2007) reported that A. inflatum can accumulate more than 3,700 (μg Ni g −1 shoot DW) 12 .…”

The Salicylic Acid and Jasmonic Acid-mediated Different Fate of Nickel Phytoremediation in Two Populations of Alyssum inflatum Nyár

“…Seeds of Alyssum in atum Nyár. of the M population were collected from serpentine sites in Marivan (35•13.625′N; 46•27.184′E), and the seeds of NM populations were gathered from non-serpentine of Shahu district (34 56′47″N; 46 27′41″E), respectively from west of Iran in summer of 2015 12 by Naser Karimi (Department of Biology, Razi University, Kermanshah, Iran) according to the institutional, national and international guidelines and laws. The permission to collect plants (license code: IR.KUMS.REC.1401.512) was obtained from the Pharmaceutical Sciences Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran, which identi es the institutional licensing committee that approves the collection of plants and experiments, including any relevant details.…”

“…has been introduced as a Ni-hyperaccumulating plant native to the Ni-rich serpentine regions of western Iran. 12,13 . For the rst time, Ghaderian et al (2007) reported that A. in atum can accumulate more than 3,700 mg Ni in its aerial part dry weight (DW) 14 .…”