The impact of foliar fertilizers on growth and biochemical responses of <i>Thymus vulgaris</i> to salinity stress

Zrig, Ahlem; Ferreira, Jorge; Hamouda, Foued; Tounekti, Taïeb; Selim, Samy; Jaouni, Soad Al; Khemira, Habib; AbdElgawad, Hamada

doi:10.1080/15324982.2018.1551817

Cited by 14 publications

(4 citation statements)

References 52 publications

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“…The soluble sugar content of S. alopecuroides significantly increased after 4 h of salt stress, thereby indicating that sugar may play a role in the process of salt stress. ROS, as a secondary stress substance in salt stress, causes secondary damage to plants, but at the same time, it activates the plant antioxidant response and produces antioxidant enzymes (POD, SOD, and CAT) that help remove excessive ROS from plant cells in order to maintain the redox balance of plant tissue cells [ 42 ]. The H 2 O 2 content in S. alopecuroides treated with salt was initially upregulated, then downregulated, and finally upregulated; additionally, the antioxidant enzyme content was significantly higher than that of the control group, thereby indicating that the ROS scavenging mechanism may be activated.…”

Section: Discussionmentioning

confidence: 99%

Combined Transcriptomic and Metabolomic Analysis Reveals the Role of Phenylpropanoid Biosynthesis Pathway in the Salt Tolerance Process of Sophora alopecuroides

Zhu

Wang

et al. 2021

IJMS

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Salt stress is the main abiotic stress that limits crop yield and agricultural development. Therefore, it is imperative to study the effects of salt stress on plants and the mechanisms through which plants respond to salt stress. In this study, we used transcriptomics and metabolomics to explore the effects of salt stress on Sophora alopecuroides. We found that salt stress incurred significant gene expression and metabolite changes at 0, 4, 24, 48, and 72 h. The integrated transcriptomic and metabolomic analysis revealed that the differentially expressed genes (DEGs) and differential metabolites (DMs) obtained in the phenylpropanoid biosynthesis pathway were significantly correlated under salt stress. Of these, 28 DEGs and seven DMs were involved in lignin synthesis and 23 DEGs and seven DMs were involved in flavonoid synthesis. Under salt stress, the expression of genes and metabolites related to lignin and flavonoid synthesis changed significantly. Lignin and flavonoids may participate in the removal of reactive oxygen species (ROS) in the root tissue of S. alopecuroides and reduced the damage caused under salt stress. Our research provides new ideas and genetic resources to study the mechanism of plant responses to salt stress and further improve the salt tolerance of plants.

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Section: Discussionmentioning

confidence: 99%

Combined Transcriptomic and Metabolomic Analysis Reveals the Role of Phenylpropanoid Biosynthesis Pathway in the Salt Tolerance Process of Sophora alopecuroides

Zhu

Wang

et al. 2021

IJMS

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“…In addition, potassium is cementing plants performance to resist diseases and pests as well as K is acted as enzymes cofactor, including enzymes related to the active ingredients synthesis enable [10]. The application of potassium fertilization impacted plant growth and yield of Anthriscus cerefolium [11], Thymus serphyllum [12], Allium cepa [13] and Thymus vulgaris [14].…”

Section: Introductionmentioning

confidence: 99%

Effect of Pinching Date and Potassium Fertilizer rate on Growth and Productivity of Roselle (Hibiscus sabdariffa, L.) Plant

El-Shayeb

Elbohy

Abdelkader

2021

AJAHR

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To enhance growth and productivity of roselle plant, two field experiments were done during the two consecutive summer season of 2019 and 2020 at Experimental Farm (Ghazala Farm), Faculty of Agriculture, Zagazig University, Egypt. This study included different pinching time treatments (after 4, 6, 8 and 12 weeks from sowing date) as the main factor and potassium fertilization rate (0.0, 25, 50 and 75 kg K2O/ feddan) as sub-factor as well as their combinations to improve growth, yield, anthocyanin content and some chemical contents of Hibiscus sabbdariffa plant. Results could be summarized as follow: The longest roselle plants were recorded with the control treatment (pinched after 4 weeks from sowing date), whereas pinching after 12 weeks from sowing date increased number of branches/plant. Also, apical bud pinching after 12 weeks from sowing date recorded the highest number of fruits per plant, dry sepals yield/plant and per feddan. Delaying pinching date from 4 to 8 weeks gradually increased anthocyanin content. In addition, total chlorophyll content as well as total carbohydrates, total nitrogen, total phosphorus and potassium percentages were increased with delaying pinching date especially after 12 weeks, in most cases. Potassium fertilization rate at 75 kg per feddan recorded the highest values of growth, yield components and the chemical constituents with significant differences between this rate and the other rates under study. Generally, the combination treatment between pinching after 12 weeks from sowing date and 75 kg potassium fertilization rate had significant effect in most parameters compared to the other combination treatments during both seasons.

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“…These ROS react with cellular constituents, causing protein degradation, lipid peroxidation and DNA damage (Tounekti et al, 2018). Efficient scavenging of ROS produced under stressful conditions requires the action of several non-enzymatic and enzymatic antioxidants in cellular organelles (Tounekti et al, 2012;Hasanuzzaman et al, 2013;Zrig et al, 2019). Catalase (CAT), superoxide dismutase (SOD), ascorbate peroxidase (APX) and several other enzymes are well known enzymatic antioxidant components (Zrig et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Efficient scavenging of ROS produced under stressful conditions requires the action of several non-enzymatic and enzymatic antioxidants in cellular organelles (Tounekti et al, 2012;Hasanuzzaman et al, 2013;Zrig et al, 2019). Catalase (CAT), superoxide dismutase (SOD), ascorbate peroxidase (APX) and several other enzymes are well known enzymatic antioxidant components (Zrig et al, 2019). Plants can also deal with the soil moisture stress by the osmotic adjustment process (Tounekti et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Priming improves germination and seed reserve utilization, growth, antioxidant responses and membrane stability at early seedling stage of Saudi sorghum varieties under drought stress

Tounekti

Mahdhi

Al-Faifi

et al. 2020

Not Bot Horti Agrobo

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Seeds of three sorghum (Sorghum bicolor (L.) Moench.) varieties from Southwest Saudi Arabia were used to investigate the potential of osmopriming with polyethylene glycol (PEG 8000) to improve germination performance, seed reserve utilization and early seedling growth and drought stress tolerance. The primed (PS) and unprimed (UPS) seeds of the three sorghum varieties were germinated for 8 days under increasing PEG-induced osmotic stress. The treatments were arranged in a completely randomized design, in a factorial arrangement, with three sorghum cultivars (‘Zaydia’, ‘Shahbi’ and ‘Ahmar’) and four osmotic potentials (0.0; -0.4; -0.8 and -1.2 MPa) with four replicates of 50 seeds each. The results showed that drought stress affected seed germination and seedling emergence and establishment, but increased the activity of the antioxidant enzyme catalase (CAT). The strongest inhibition of germination and growth occurred at the highest PEG concentration and a significant difference was noticeable between the studied varieties. We confirmed also that seed osmopriming improved seed germination performance, seedling growth and enhanced the CAT activities while reduced malonyldialdehyde (MDA) accumulation and electrolyte leakage (EL) in the drought-stressed seedlings. Seed priming have enhanced also the α-amylase and total proteases activities in all varieties. The largest increase of these hydrolysing enzymes was shown in ‘Ahmar’. Furthermore, the PEG priming lead to improvement of the weight of utilized (mobilized) seed reserve (WUSR), seed reserve depletion percentage (SRDP) and total seedling dry weight (SLDW) of sorghum seedlings under water stress conditions. Still, the highest values or all three parameters were found in the ‘Ahmar’ variety. Under increasing drought stress conditions, ‘Ahmar’ showed the highest yield stability index (YSI) and the least EL and MDA contents in comparison to the other two varieties during the seedling establishment stage. Therefore, the former variety can tolerate better a rigorous water stress condition. ‘Zaydia’ appears to be the most vulnerable to drought stress. Thus, the use of species or varieties with eminent seed metabolic quality is an advantageous trait in drought-prone regions.

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The impact of foliar fertilizers on growth and biochemical responses of Thymus vulgaris to salinity stress

Cited by 14 publications

References 52 publications

Combined Transcriptomic and Metabolomic Analysis Reveals the Role of Phenylpropanoid Biosynthesis Pathway in the Salt Tolerance Process of Sophora alopecuroides

Combined Transcriptomic and Metabolomic Analysis Reveals the Role of Phenylpropanoid Biosynthesis Pathway in the Salt Tolerance Process of Sophora alopecuroides

Effect of Pinching Date and Potassium Fertilizer rate on Growth and Productivity of Roselle (Hibiscus sabdariffa, L.) Plant

Priming improves germination and seed reserve utilization, growth, antioxidant responses and membrane stability at early seedling stage of Saudi sorghum varieties under drought stress

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