Effect of Humic Acid Applications on Physiological and Biochemical Properties of Soybean (Glycine max L.) Grown under Salt Stress Conditions

MAIWAN>, Noor; Tunçtürk, Murat; Tunçtürk, Rüveyde

doi:10.29133/yyutbd.1057288

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…Also, humic acid ability to increase nutrient uptake and its cytokinin-like properties are responsible for chlorophyll preservation and delay in leaf senescence. As a result, it can be said that in the present research, applying humic acid may lead to minimizing the chlorophyll decay and boosting the leaf chlorophyll content under salinity conditions by increasing the cell membrane stability and boosting the absorption of nutrients such as nitrogen which is related to the chlorophyll synthesis 55 , 68 , thereby increasing vegetative growth and yield of cucumber in the present study and soybean ( Glycine max L.) in the study of Maıwan et al 69 .…”

Section: Discussionmentioning

confidence: 49%

Humic acid and grafting as sustainable agronomic practices for increased growth and secondary metabolism in cucumber subjected to salt stress

Amerian,

Palangi,

Gohari

et al. 2024

Sci Rep

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Salinity stress poses a significant treat to crop yields and product quality worldwide. Application of a humic acid bio stimulant and grafting onto tolerant rootstocks can both be considered sustainable agronomic practices that can effectively ameliorate the negative effects of salinity stress. This study aimed to assess the above mentioned ameliorative effects of both practices on cucumber plants subjected to saline environments. To attain this goal a factorial experiment was carried out in the form of a completely randomized design with three replications. The three factors considered were (a) three different salinity levels (0, 5, and 10 dS m−1 of NaCl), (b) foliar application of humic acid at three levels (0, 100, and 200 mg L−1), and (c) both grafted and ungrafted plants. Vegetative traits including plant height, fresh and dry weight and number of leaf exhibited a significant decrease under increasing salinity stress. However, the application of humic acid at both levels mitigated these effects compared to control plants. The reduction in relative water content (RWC) of the leaf caused by salinity, was compensated by the application of humic acid and grafting. Thus, the highest RWC (86.65%) was observed in grafting plants with 0 dS m−1 of NaCl and 20 mg L−1 of humic acid. Electrolyte leakage (EL) increased under salinity stress, but the application of humic acid and grafting improved this trait and the lowest amount of EL (26.95%) was in grafting plants with 0 dS m−1 of NaCl and 20 mg L−1 of humic acid. The highest amount of catalase (0.53 mmol H2O2 g−1 fw min−1) and peroxidase (12.290 mmol H2O2 g−1 fw min−1) enzymes were observed in the treatment of 10 dS m−1 of NaCl and 200 mg L−1 humic acid. The highest amount of total phenol (1.99 mg g−1 FW), total flavonoid (0.486 mg g−1 FW), total soluble carbohydrate (30.80 mg g−1 FW), soluble protein (34.56 mg g−1 FW), proline (3.86 µg g−1 FW) was in grafting plants with 0 dS m−1 of NaCl and 200 mg L−1 of humic acid. Phenolic acids and phenylalanine ammonia lyase (PAL) and polyphenol oxidase (PPO) enzymes increased with increasing salinity and humic acid levels. Contrary to humic acid, salt stress increased the sodium (Na+) and chlorine (Cl−) and decreased the amount of potassium (K+) and calcium (Ca2+) in the root and leaf of ungrafted cucumber. However, the application 200 mg L−1 humic acid appeared to mitigate these effects, thereby suggesting a potential role in moderating physiological processes and improving growth of cucumber plants subjected to salinity stress. According to the obtained results, spraying of humic acid (200 mg L−1) and the use of salt resistant rootstocks are recommended to increase tolerance to salt stress in cucumber. These results, for the first time, clearly demonstrated that fig leaf gourd a new highly salt-tolerant rootstock, enhances salt tolerance and improves yield and quality of grafted cucumber plants by reducing sodium transport to the shoot and increasing the amount of compatible osmolytes.

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Section: Discussionmentioning

confidence: 49%

Humic acid and grafting as sustainable agronomic practices for increased growth and secondary metabolism in cucumber subjected to salt stress

Amerian,

Palangi,

Gohari

et al. 2024

Sci Rep

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Experimental evaluation of the protective properties of a humic preparation in relation to cultivated plants under salt stress

Galchenko,

Cherdakova

2024

Vestn. Ross. univ. družby nar., Ser. Èkol. bezop. žiznedeât.

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In connection with the widespread problem of soil salinity, the issue of increasing the salt tolerance of cultivated plants is becoming increasingly important. In this aspect, humic substances and preparations based on them are very promising. The aim of the study was to evaluate the effect of humic preparations on agricultural crops and lawn cereals under salt stress. Under laboratory conditions, the protective properties of the humic preparation «Ekorost» were evaluated in relation to the industrial crop Brassica rapa L. and to lawn grasses under the influence of salt stress induced by excessive concentrations of sodium chloride and anti-icing agent. It was revealed that the humic preparation «Ekorost» exhibits protective properties in relation to the indicated test cultures under conditions of artificially simulated salt stress, which is expressed in a noticeable stimulation of their germination and growth processes. In all the experiments, the most effective was a 0.1% aqueous solution of the drug «Ekorost», which allows us to recommend it in the indicated dosage to increase the salt tolerance of oil radish ( Brassica rapa L.) and lawn cereals.

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Investigation of Foliar L-Glutamic Application on the Resistance to the Capacity of the SC2121 Tomato Variety (Solanum lycopersicum L.) to Long-Term Salinity Stress

TURFAN,

DÜZEL

2023

Yüzüncü Yıl Üniversitesi Tarım Bilimleri Dergisi

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Within the scope of this study, the effects of L-Glutamic acid (L-GLU: 250 mg L-1, 500 mg L-1) treatments on morphological and biochemical characteristics of SC2121 tomato variety under salt stress (50 mM, 100 mM, 200 mM NaCl) were compared. The morphological results obtained from leaves and fruits were found to peak at 500GLU, 50NaCl-500GLU, 250GLU, and 200NaCl-500GLU, whereas their lowest values were achieved with doses of 200NaCl, 200NaCl-250GLU, 100NaCl, and 100NaCl-500GLU Among the bioactive molecules, amino acid, and proline amounts increased in all the treatments, whereas total protein increased in 500GLU and 50NaCl- 250GLU, 50NaCl-500GLU. CAT activity increased in doses of 500GLU and 50 NaCl-250GLU, 50NaCl-500GLU, whereas POD and SOD activity decreased in high NaCl and 200NaCl+ 250GLU, 200NaCl-500GLU. Treatments caused an increase in MDA concentration, while NaCl (50-100 mM), GLU, and 100 NaCl-500GLU reduced the H2O2 concentration. In conclusion, 500GLU, 50NaCl-500GLU, 50NaCl-250GLU, 250GLU, and 200NaCl+500GLU stimulated the growth and development in the SC2121 tomato variety, as well as the leaf bioactive chemicals. However, 200NaCl-250GLU, 200NaCl, and 200NaCl-250GLU reduced the growth and development of the tomato and decreased the chemicals in the leaves. Given the results, it can be stated that yield and quality could be increased by making use of GLU treatments in tomato varieties under salt stress.

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Effect of Humic Acid Applications on Physiological and Biochemical Properties of Soybean (Glycine max L.) Grown under Salt Stress Conditions

Cited by 3 publications

References 19 publications

Humic acid and grafting as sustainable agronomic practices for increased growth and secondary metabolism in cucumber subjected to salt stress

Humic acid and grafting as sustainable agronomic practices for increased growth and secondary metabolism in cucumber subjected to salt stress

Experimental evaluation of the protective properties of a humic preparation in relation to cultivated plants under salt stress

Investigation of Foliar L-Glutamic Application on the Resistance to the Capacity of the SC2121 Tomato Variety (Solanum lycopersicum L.) to Long-Term Salinity Stress

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