Amelioration of Defense System by Exogenous Citric Acid Application to Lettuce (Lactuca sativa L.) Plant | ||||
| Horticulture Research Journal | ||||
| Volume 3, Issue 1, March 2025, Page 88-101 PDF (1010.39 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/hrj.2025.418505 | ||||
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| Authors | ||||
| Esraa Mohamed1; Sayed Hussein Abdelgalil2; Ebrahim Shehata3 | ||||
| 1Vegetable Cross Pollination Dep., Horticulture Research Institute, Agricultural Research Center (ARC), Giza, Egypt | ||||
| 2Central Laboratory of Organic Agriculture, Agricultural Research Center (ARC), Giza, Egypt. | ||||
| 3Department of Natural Resources and Agricultural Engineering, Faculty of Agriculture, Damanhour University, Damanhour, Egypt. | ||||
| Abstract | ||||
| Improper agricultural practices over the decades symbolize a serious problem for various crops productivity. Citric acid (CA) (C6H8O7) has demonstrated a superior role in abiotic stress resistance in plants. The current investigation was implemented to test the effectiveness of citric acid root application before and after transplanting. The treatments were: T1 = root soaking (RS) 0.5 g/L, T2 = (RS) 0.75 g/L, T3 = (RS) 1 g/L, T4 = soil application (SA) 0.5 g/L, T5 = (SA) 0.75 g/L, T6 = (SA) 1 g/L, T7 = (RS) 0.5 g/L + (SA) 0.5 g/L, T8 = (RS) 0.75 g/L + (SA) 0.75 g/L, T9 = (RS) 1 g/L + (SA) 1 g/L, and T10 = untreated (control). Overall, the findings demonstrated that the administration of CA in both seasons had a considerable impact on all vegetative development. With the exception of T9, all treatments enhanced growth parameters when compared to the untreated treatment; T7 showed the most remarkable improvement when compared to all other treatments. Citric acid has the potential to decline the harmful effects of abiotic stress in lettuce by inhibiting uptake of Na⁺ and Cl⁻ and by stimulating the antioxidant enzymes such as SOD, POD, CAT, PAL, and PPO. | ||||
| Keywords | ||||
| Citric acid; Lettuce; Antioxidant enzymes; Root soaking; Soil application | ||||
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