Impact of Biochar on Growth, Physiology and Antioxidant Activity of Common Bean Subjected to Salinity Stress

2021 ◽  
Vol 9 (1) ◽  
pp. 8-13
Author(s):  
Ertan Yildirim ◽  
◽  
Metin Turan ◽  
Melek Ekinci ◽  
Raziye Kul
Keyword(s):  
Antioxidant Activity ◽  
Common Bean ◽  
Salinity Stress ◽  
Growth Physiology

scholarly journals Exogenous ascorbic acid improved tolerance in maize (Zea mays L.) by increasing antioxidant activity under salinity stress

2017 ◽  
Vol 12 (17) ◽  
pp. 1437-1446 ◽  
Author(s):  
Billah M. ◽  
M. Rohman M. ◽  
Hossain N. ◽  
Shalim Uddin M.
Keyword(s):  
Antioxidant Activity ◽  
Zea Mays ◽  
Ascorbic Acid ◽  
Salinity Stress ◽  
Zea Mays L

scholarly journals Effect of Salinity on Morphological Characteristics, Biochemical Accumulation, and Essential Oil Yield and Composition in Black Horehound (Ballota nigra L.)

2021 ◽  
Author(s):  
Mehdi Younessi Mehdikhanlou ◽  
Zahra Dibazarnia ◽  
Shahin Oustan ◽  
Vinson Teniyah ◽  
Ramesh Katam ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Essential Oil ◽  
In Vitro Culture ◽  
Salinity Stress ◽  
Salt Concentration ◽  
Total Phenolics ◽  
Morphological Characteristics ◽  
Culture Conditions ◽  
Total Flavonoids

Black horehound (Ballota nigra L.) is one of the important medicinal plants, which is a rich source of health-promoting essential oils. Salinity stress affects plant development and alters the quality and quantity of plants extracts and their composition. This study was aimed to investigate the effect of salinity on morphological, physiological characteristics, and secondary metabolites of B. nigra under greenhouse, and in vitro culture conditions. The plants were treated with different concentrations of NaCl (25, 50, 75, 100 mM) and fresh and dry weight of leaf and stem were measured as well as morphological characteristics of the plant. Plant growth was reduced with the increased salinity concentrations. The results showed that all growth-related traits and SPAD were decreased both in vivo and in vitro. Additionally, increased salt concentration affected the cell membrane integrity. Total phenolics content of plants growing in the greenhouse, increased by 21% at 50 mM NaCl, but at higher stress levels (100 mM NaCl), the amounts were decreased significantly. Total flavonoids contents followed similar patterns, with a slight difference. In addition, the maximum and minimum total phenolics contents of plants growing under in vitro condition were observed at 50 mM NaCl and control treatments, respectively. Increasing the salt concentration significantly affected the total flavonoids content, and as a result, the highest amount was observed in 50 and 75 mM NaCl treatments. Antioxidant activity was also measured. Among the NaCl treatments, the highest DPPH scavenging activities (IC50) under greenhouse and in vitro conditions were detected at 50 mM and 25 mM concentrations, respectively. In general, based on the results, with increasing the salinity level to 75 mM, the activities of CAT and APX were significantly upregulated in both greenhouse and in vitro culture conditions. A correlation between total phenolics and flavonoids contents as well as antioxidant activity were obtained. With shifting salinity stress, the type and the amount of the identified essential oil compounds changed. Compounds such as styrene, tridecanol, germacrene-D, beta-Ionone, beta-bisabolene, and caryophyllene oxide increased compared to the controlled treatment.

scholarly journals Coupling effects of phosphorus fertilization source and rate on growth and ion accumulation of common bean under salinity stress

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11463
Author(s):  
Heba I. Mohamed ◽  
Adel A. El-Sayed ◽  
Mostafa M. Rady ◽  
Gianluca Caruso ◽  
Agnieszka Sekara ◽  
...  
Keyword(s):  
Common Bean ◽  
Salinity Stress ◽  
Dry Weight ◽  
Ion Accumulation ◽  
Carotenoid Content ◽  
Phosphorus Fertilization ◽  
Single Superphosphate ◽  
Urea Phosphate ◽  
P Fertilizer ◽  
P Sources

Many agricultural regions in arid and semiarid climate zone need to deal with increased soil salinity. Legumes are classified as salt-sensitive crops. A field experiment was performed to examine the application of phosphorus (P) fertilizer source and rate on growth, chlorophylls and carotenoid content, DNA and RNA content and ion accumulation in common bean (Phaseolus vulgaris L.) cultivated under salinity stress. An experimental design was split-plot with three replicates. The main plots included two P sources, namely single superphosphate (SP) and urea phosphate (UP). The sub-plots covered four P rates, i.e., 0.0, 17.5, 35.0, and 52.5 kg P ha–1. All applied P fertilization rates, in both forms, increased plant height, leaf area, dry weight of shoots and roots per plant, and total dry weight (TDW) in t ha−1. The highest accumulation of N, P, K+, Mg2+, Mn2+, Zn2+, and Cu2+ was determined in the shoot and root of common bean, while 35 kg of P per ha−1 was used compared to the other levels of P fertilizer. The highest P rate (52.5 kg ha−1) resulted in a significant reduction in Na+ in shoot and root of common bean. The response curve of TDW (t ha–1) to different rates of P (kg ha–1) proved that the quadratic model fit better than the linear model for both P sources. Under SP, the expected TDW was 1.675 t ha–1 if P was applied at 51.5 kg ha–1, while under UP, the maximum expected TDW was 1.875 t ha–1 if P was supplied at 42.5 kg ha–1. In conclusion, the 35.0 kg P ha–1 could be considered the best effective P level imposed. The application of P fertilizer as urea phosphate is generally more effective than single superphosphate in enhancing plant growth and alleviating common bean plants against salinity stress.

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