Naboulsi Imane, Ben Mrid Reda, Ennoury Abdelhamid, Zouaoui Zakia, Nhiri Mohamed, Ben Bakrim Widad, Yasri Abdelaziz, Aboulmouhajir Aziz
Organic Synthesis, Extraction and Valorization Laboratory, Faculty of Sciences Ain Chock, Hassan II University, Km 8 El Jadida Road, Casablanca 20000, Morocco.
AgroBioSciences Program, Mohammed VI Polytechnic University (UM6P), Lot 660, Hay Moulay Rachid, Ben Guerir 43150, Morocco.
Plants (Basel). 2022 May 11;11(10):1283. doi: 10.3390/plants11101283.
Salinity is a severe abiotic problem that has harmful impacts on agriculture. Recently, biostimulants were defined as bioprotectant materials that promote plant growth and improve productivity under various stress conditions. In this study, we investigated the effect of Crataegus oxyacantha extract as a biostimulant on tomato plants (Solanum lycopersicum) grown under salt stress. Concentrations of 20 mg/L, 30 mg/L, and 70 mg/L of C. oxyacantha extract were applied to tomato plants that were grown under salt stress. The results indicated that plants that were treated with C. oxyacantha extract had a higher ability to tolerate salt stress, as demonstrated by a significant (p < 0.05) increase in plant growth and photosynthetic pigment contents, in addition to a significant increase in tomato soluble sugars and amino acids compared to the control plants. In the stressed tomato plants, malondialdehyde increased and then decreased significantly with the different concentrations of C. oxyacantha extract. Furthermore, there was a significant improvement in the antioxidant enzyme activities of superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione S-transferase (GST), and glutathione reductase (GR) in the stressed plants, especially after treatment with 70 mg/L of the extract. Overall, our results suggest that C. oxyacantha extract could be a promising biostimulant for treating tomato plants under salinity stress.
盐度是一个严重的非生物问题，对农业有有害影响。最近，生物刺激剂被定义为在各种胁迫条件下促进植物生长并提高生产力的生物保护材料。在本研究中，我们研究了山楂提取物作为生物刺激剂对盐胁迫下生长的番茄植株（番茄）的影响。将浓度为20mg/L、30mg/L和70mg/L的山楂提取物施用于盐胁迫下生长的番茄植株。结果表明，与对照植株相比，用山楂提取物处理的植株具有更高的耐盐胁迫能力，这表现为植株生长和光合色素含量显著增加（p<0.05），此外番茄可溶性糖和氨基酸也显著增加。在受胁迫的番茄植株中，丙二醛随着不同浓度的山楂提取物先增加后显著降低。此外，受胁迫植株中超氧化物歧化酶（SOD）、谷胱甘肽过氧化物酶（GPx）、谷胱甘肽S-转移酶（GST）和谷胱甘肽还原酶（GR）的抗氧化酶活性有显著提高，尤其是在处理70mg/L提取物后。总体而言，我们的结果表明山楂提取物可能是一种有前景的生物刺激剂，用于处理盐胁迫下的番茄植株。
