Papers by rayhaneh amooaghaie
International Journal of Phytoremediation, Apr 10, 2023
Russian Journal of Plant Physiology, Jun 24, 2017
⎯Seeds of Bunium persicum (Boiss.) B. Fedtsch. have complex physiological dormancy that can be re... more ⎯Seeds of Bunium persicum (Boiss.) B. Fedtsch. have complex physiological dormancy that can be released by 15 weeks stratification. The present study revealed that cold stratification enhanced content of H 2 O 2 , and application of GA 3 and ROS donors (Fenton reagent, H 2 O 2, methylviologen and menadione) did not affect or only slightly promoted the germination of non-stratified, fully dormant seeds. Dormancy was markedly decreased by ROS-generating reagents, GA 3 and fluridone (an inhibitor of ABA biosynthesis) and was enhanced by ROS-decreasing compounds (DMTU, Tiron, SB and DPI), diniconazole (Dinc, an inhibitor of ABA catabolism) and paclobutrazol (PAC, an inhibitor of GA biosynthesis) when dormancy was partially removed by cold stratification. The response to these compounds reduced with increasing time of stratification. ABA inhibited germination by repressing of NADPH oxidase activity and ROS accumulation and conversely, GA triggered germination by promoting an increase of NADPH oxidase activity and ROS levels. Data in this study, for the first time suggest releasing deep complex physiological dormancy by cold stratification is associated with interplay between ROS and ABA/GA.
The Open Plant Science Journal, Apr 28, 2009
The germination of Ferula ovina seeds faces certain problems. The present research was designed t... more The germination of Ferula ovina seeds faces certain problems. The present research was designed to study the promotion of the germination of Ferula ovina seeds by moist-chilling and GA 3 applications. The results showed that Ferula ovina seeds display an endogenous dormancy that can be released by moist-chilling treatment for a certain period. In this respect, the best treatment was moist-chilling for 6 weeks at 5 ± 1 °C or for 4 weeks of moist-chilling followed by soaking in 500 ppm GA 3 solution for 24 h. These treatments significantly increased germination percentage and decreased time to 50% germination (T 50) compared to control. Also, the characteristics of the obtained seedlings were much better than those of control. Moreover, the 6-week moist-chilled seeds contained the highest soluble protein concentration. The combination between GA 3 and moist-chilling treatments produced different effects on seed germination, soluble protein depending on the length of the moist-chilling period. GA 3 application on un-chilled seeds improves the germination process. The concentration of soluble inorganic phosphorus of the tested seeds was negative (r = 0.88, p<0.05) while, the concentration of soluble organic phosphorus positively (r = 0.93, P<0.05) correlated with the germination percentage. It was concluded that treatment of moist-chilling for 6 weeks or 4 weeks followed by 500 ppm GA 3 is recommended for promoting the germination process of Ferula ovina seeds and improving growth characteristics of the subsequent seedlings.
World Academy of Science, Engineering and Technology, International Journal of Agricultural and Biosystems Engineering, Feb 12, 2018
Journal of Plant Research #R##N#(Iranian Journal of Biology), Feb 20, 2015
International Journal of Phytoremediation, 2020
Excessive nickel (Ni) accumulation in edible parts of the plants has become a serious challenge f... more Excessive nickel (Ni) accumulation in edible parts of the plants has become a serious challenge for food security over the past few decades. Therefore, in this study, the role of calcium (Ca 2þ) signaling in imparting Ni tolerance was investigated in zucchini (Cucurbita pepo L. cv Courgette d'Italie). Exposure of zucchini seedlings to Hogland solution containing 0.28 mmol L À1 Ni(NO 3) 2 reduced plant growth, the content of chlorophyll and carotenoids and the relative water content (RWC) in leaves, increased Ni accumulation that was accompanied to depletion of the essential bivalent cations and induced oxidative stress and proline accumulation in both shoots and roots. Pretreatment with the nutrient solution containing 15 mmol L À1 calcium chloride (CaCl 2), significantly improved zucchini growth and photosynthetic pigment contents and maintained RWC in leaves under both control and Ni stress conditions. Pretreatment with CaCl 2 reduced Ni accumulation, modified cation homeostasis, increased the activities of peroxidase and catalase enzymes and lowered Ni-induced accumulation of hydrogen peroxide, malondialdehyde and proline in leaves and roots. Pre-exposure of root with Ca 2þ chelator (ethylene glycol tetraacetic acid) and plasma membrane Ca 2þ channel blocker (lanthanum chloride) impaired impact of Ca 2þ on the aforementioned attributes. Outcomes of this study not only highlight the signaling role of Ca 2þ in regulating defensive responses but also suggest an eco-friendly approach for reducing the Ni contamination in plants that ensure food safety.
Saline soils and saline irrigation waters present potential hazards to canola production. Theref... more Saline soils and saline irrigation waters present potential hazards to canola production. Therefore, in this study in order to find indicators for salt tolerance, the changes of proline content and the activities of antioxidant enzymes were investigated in two canola genotypes (H308, H420) under various salt concentrations (0, 50, 100, 150 and 200 mM). Results showed that compared to the control, salinity reduced seed germination and biomass of plants and caused the significant increase in proline content and lipid peroxidation in leaves of both genotypes. On the basis of growth parameters, H420 was more salt sensitive than H308. H308 accumulated higher proline contents and had higher antioxidant enzyme activities (SOD, POX, APX, and CAT) than H420 especially at higher salinity levels. The activities of POX, APX, and CAT in H420 slightly increased in low salinity levels but in high salinity, their activities decreased and return to less or same level of the control. The differences...
JWSS - Isfahan University of Technology, 2003
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Australian journal of basic and applied sciences, 2011
Sainfoin is a legume crop that use for dry forage and grazing in irrigation and dryland condition... more Sainfoin is a legume crop that use for dry forage and grazing in irrigation and dryland conditions. Morphological structure and inhibitor substrates of pod and variety of seed (pod) size are effective on sainfoin germination. Farmers use high seed (pod) rate in sowing time in some regions of Iran. In order to determine hydro and osmopriming effects on seed germination of sainfoin in two seed (pod) size categories, priming agents (PEG 6000, KNO3 and CaCl2) were examined in different osmotic potentials -0.45 to 0 Mpa ranges for 12 to 24 hours. Results showed that the most germination of treated pods was obtained in the hydroprimed seeds (0 Mpa = hydropriming), but germination trend in the osmoprimed treatments reduced in -0.15 Mpa toward -0.45 Mpa. Otherwise, the least germination among different osmopriming agents obtained in -0.45 Mpa. Maximum and minimum germination in priming agents belonged to PEG6000 and KNO3 respectively. Germination in primed pods at 24 h were more than other ...
Protoplasma, 2021
The individual impact of silicon (Si) and nitric oxide (NO) on secondary metabolism in several pl... more The individual impact of silicon (Si) and nitric oxide (NO) on secondary metabolism in several plant species has been reported, but their combined effect has never been evaluated yet. Therefore, in this study, single and combined impacts of NO and Si on the biosynthesis of rosmarinic acid (RA) and essential oil (EO) content in leaves of Salvia officinalis were investigated under both non-stress and Cu stress conditions. The results indicated that high Cu concentration decreased biomass and the content of polyphenols, but elevated electrolyte leakage, while lower Cu concentrations, especially 200 μM Cu, increased the content of polyphenols, EO, and antioxidant capacity in leaves of S. officinalis. The foliar application of sodium silicate (1 mM Si) and sodium nitroprusside (200 μM SNP as a NO donor) alone and particularly in combination improved shoot dry biomass, restored chlorophyll and carotenoids, increased EO content, the amounts of flavonoids, and phenolic compounds especially RA, and enhanced antioxidant capacity in the leaves of S. officinalis under both non-stress and Cu stress conditions. Copper treatment increased NO content, upregulated expression of PAL, TAT, and RAS genes, and enhanced phenylalanine ammonia-lyase activity in the leaves, which were responsible for improving the production of phenolic compounds, particularly rosmarinic acid. Foliar spraying with Si and SNP intensified these attributes. All responses were more pronounced when NO and Si were simultaneously applied under Cu stress. These findings suggest that NO and Si synergistically modulate secondary metabolism through upregulation of related gene expression and enzyme activities under both non-stress and Cu stress conditions.
Russian Journal of Plant Physiology, 2018
⎯Fusarium oxysporum is one of pathogens causing the damping-off disease of Plantago psyllium in I... more ⎯Fusarium oxysporum is one of pathogens causing the damping-off disease of Plantago psyllium in Iran. A greenhouse experiment was conducted to assess the effect of Bacillus subtilis and vermicompost singly and in combination on control of Fusarium-induced damping-off in psyllium. The results showed that vermicompost or B. subtilis, significantly increased the growth of psyllium seedlings and both were effective biocontrol agents against F. oxysporum. Among treatments at least damping-off incidence was recorded in combination of 50% vermicompost and B. subtilis. Results for the first time exhibited that vermicompost as well as B. subtilis induced systemic resistance through nitric oxide (NO) signaling and their combined application further than their individual treatments induced development of plant defense related enzymes including β-1,3-glucanase (GLU), phenylalanine ammonia-lyase (PAL), polyphenol oxidase (PPO) and the activities of antioxidant enzymes (ascorbate peroxidase, catalase, superoxide dismutase and peroxidase) and also more effectively reduced lipid peroxidation in psyllium leaves. These findings suggested potential of B. subtilis in promoting plant growth as well as inducing systemic resistance in the host plants, was enhanced by vermicompost application.
Plant Physiology and Biochemistry, 2019
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
Environmental and Experimental Botany, 2018
Interplay between hydrogen sulfide and calcium/calmodulin enhances systemic acquired acclimation ... more Interplay between hydrogen sulfide and calcium/calmodulin enhances systemic acquired acclimation and antioxidative defense against nickel toxicity in zucchini Authors: Maryam Valivand (Methodology) (Visualization) (Investigation) (Data curation) (Writing-review and editing) (Formal analysis), Rayhaneh Amooaghaie (Methodology) (Visualization) (Investigation) (Data curation) (Writingreview and editing) (Formal analysis), Alimohammad Ahadi (Methodology) (Visualization) (Investigation) (Data curation) (Writing-review and editing) (Formal analysis)
African Journal of Biotechnology, 2011
The role of polyamines in the heat-shock protection of soybean seedling by application of exogeno... more The role of polyamines in the heat-shock protection of soybean seedling by application of exogenous polyamines (putrescine, spermidine and spermine) and their biosynthetic inhibitors involving CHA (cyclohexylamine) and DFMO (D, L α-diflouromethylornithine) was investigated. Application of polyamines, as a pre-treatment at 28°C for 2 h prior to heat-shock (45°C for 2 h), enhanced the recovery growth of both roots and hypocotyls. Treatment with polyamine biosynthetic inhibitors, that is, CHA and DFMO resulted in thermo sensitization, making seedlings vulnerable to heat-shock. Treatment of polyamines plus inhibitors reduced inhibitory effects and enhanced the growth recovery of seedling. Application of polyamines decreased electrolyte leakage and malondialdehyde from different tissue sections, suggesting protection of membrane integrity. Our results show that in comparisons with the heat-shock control, CaCl 2 application in similar to PAs decreased electrolyte leakage and lipid peroxidation from root and hypocotyl tissue sections, and in contrast, in the presence of EGTA (a chelator of calcium), the stress injury intensified and growth were severely inhibited, and electrolyte leakage and MDA content of roots were significantly increased. We suggest that under stress conditions, polyamines may replace calcium in maintaining membrane integrity by binding to phospholipids of the membrane.
Journal of Science and Technology of Greenhouse Culture, 2016
Photosynthetica, 2016
In our study, one-month-old Melissa officinalis plants were subjected to Fe-deficiency treatments... more In our study, one-month-old Melissa officinalis plants were subjected to Fe-deficiency treatments, such as 10 μM Fe (as direct iron deficiency, DD), and 30 μM Fe + 10 mM NaHCO 3 + 0.5 g l −1 CaCO 3 (as indirect iron deficiency, ID), and 30 μM Fe (as control) for 14 d. Both Fe-deficiency types reduced plant growth, photosynthetic pigment contents, an active Fe content in roots and leaves, root Fe(III)-reducing capacity, Fe-use efficiency, maximal quantum yield of PSII photochemistry, a ratio of variable to basic fluorescence, and activities of antioxidant enzymes, while they increased lipid peroxidation and a H 2 O 2 content in leaves. These effects were more pronounced in plants exposed to ID with bicarbonate than those of DD plants. We showed that sodium nitroprusside (SNP), as NO donor, could ameliorate the adverse effects of bicarbonate on above traits. The methylene blue, as NO blocker, reversed the protective effects conferred by SNP in the ID-treated plants as well as DD plants. These findings suggests that NO protects photosynthesis and growth of IDtreated plants as well as DD plants by contribution in availability and/or delivery of metabolically active iron or by changing activities of reactive oxygen species-scavenging enzymes.
Russian Journal of Plant Physiology, 2017
⎯Seeds of Bunium persicum (Boiss.) B. Fedtsch. have complex physiological dormancy that can be re... more ⎯Seeds of Bunium persicum (Boiss.) B. Fedtsch. have complex physiological dormancy that can be released by 15 weeks stratification. The present study revealed that cold stratification enhanced content of H 2 O 2 , and application of GA 3 and ROS donors (Fenton reagent, H 2 O 2, methylviologen and menadione) did not affect or only slightly promoted the germination of non-stratified, fully dormant seeds. Dormancy was markedly decreased by ROS-generating reagents, GA 3 and fluridone (an inhibitor of ABA biosynthesis) and was enhanced by ROS-decreasing compounds (DMTU, Tiron, SB and DPI), diniconazole (Dinc, an inhibitor of ABA catabolism) and paclobutrazol (PAC, an inhibitor of GA biosynthesis) when dormancy was partially removed by cold stratification. The response to these compounds reduced with increasing time of stratification. ABA inhibited germination by repressing of NADPH oxidase activity and ROS accumulation and conversely, GA triggered germination by promoting an increase of NADPH oxidase activity and ROS levels. Data in this study, for the first time suggest releasing deep complex physiological dormancy by cold stratification is associated with interplay between ROS and ABA/GA.
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Papers by rayhaneh amooaghaie