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OXIDATIVE STRESS ALLEVIATION THROUGH ENZYMATIC AND NON-ENZYMATIC ANTIOXIDANTS AND OSMOREGULATORS GENERATION IN BARLEY (HORDEUM VULGARE L.) UNDER SALT (NACL) STRESS BY ASCORBIC ACID (ASA)

文献类型： 外文期刊

作者： Hassan, Amara 1 ; Saleem, Muhammad Hamzah 2 ; Perveen, Abida 1 ; Mobeen, Mobeen 1 ; Ali, Sajjad 3 ; Shakoor, Abdul 4 ; Ali, Qurban 5 ; Chattha, Muhammad Sohaib 6 ; El-Sheikh, Mohamed A. 7 ; Ali, Shafaqat 8 ;

作者机构： 1.Govt Coll Univ, Dept Bot, Allama Iqbal Rd, Faisalabad 38000, Pakistan

2.Huazhong Agr Univ, Coll Plant Sci & Technol, Wuhan 430070, Peoples R China

3.Bacha Khan Univ, Dept Bot, Charsadda 24461, Pakistan

4.Ayub Agr Res Inst, Sugarcane Res Inst, Faisalabad 38850, Pakistan

5.Zhejiang Acad Agr Sci, Inst Agroprod Safety & Nutr, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou, Peoples R China

6.Louisiana State Univ, Agr Ctr, Sch Plant Environm & Soil Sci, Baton Rouge, LA 70803 USA

7.King Saud Univ, Coll Sci, Bot & Microbiol Dept, Riyadh, Saudi Arabia

8.Govt Coll Univ, Dept Environm Sci & Engn, Allama Iqbal Rd, Faisalabad 38000, Pakistan

9.China Med Univ CMU, Dept Biol Sci & Technol, Taichung 40402, Taiwan

关键词： Barley (Hordeum vulgare L.); Enzymatic antioxidants; Growth; Non-enzymatic antioxidants; Oxidative stress; Plant hormone and Salinity

期刊名称：PAKISTAN JOURNAL OF BOTANY （ 影响因子：1.101； 五年影响因子：1.066 ）

ISSN： 0556-3321

年卷期： 2022 年 54 卷 1 期

页码：

收录情况： SCI

摘要： Among crops, Hordeum vulgare L. (barley) is one of the most economically important species, considered as an excellent model for studies of agronomy, plant physiology and abiotic stress, with a rapid growth rate and a high adaptability to various habitats. Ascorbic acid (AsA), also referred to as vitamin C, is a major nonenzyme antioxidant in plants and plays an important role in mediating certain oxidative stresses caused by biotic and abiotic stress. Therefore, a pot experiment was conducted to investigate the effect of different levels of AsA (0, 30 and 60 mM) in H. vulgare using two specific salinity levels, 0 and 150 mM. The results from the present study showed that the high soil salinity concentration decreased plant growth and biomass and photosynthetic pigments in H. vulgare thus elevating the generation of reactive oxygen species (ROS), suggesting that high NaCl concentrations induce oxidative stress in H. vulgare. Moreover, the enzymatic activities of superoxidase dismutase (SOD) and peroxidase (POD) came into play to reduce salinity stress and showed that H. vulgare could tolerate low levels of salt stress, i.e., 150 mM. It was also noticed that exogenous application of AsA considerably increased plant height, plant leaf area, sheet number, tillers number, plant fresh and dry biomass, photosynthesis pigments, and reduced the oxidative stress (H2O2 and MDA) in plants which in turn reduced the enzymatic (SOD and POD) and non-enzymatic antioxidants (GSH and AsA). Research findings, therefore, suggested that AsA application can ameliorate salinity stress in H. Vulgare and resulted in improved plant growth and composition under abiotic stress condition, as depicted by reduced the genetaion of ROS.

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