Muhammad Amjad, Rukhshinda Kousar, Muhammad Asif Naeem, Muhammad Imran, Muhammad Nadeem, Ghulam Abbas, Muhammad Shafique Khalid, Saeed Ahmad Qaisrani, Sajida Azhar, Behzad Murtaza
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An experiment was conducted to study the interactive effects of salinity (0, 7.5, and 15 dS m<sup>-1</sup>) and Ni toxicity (0, 10, 20, and 40 mg kg<sup>-1</sup>) on a tolerant (Naqeeb) and a sensitive (Nadir) <i>Solanum lycopersicum</i> L. physiology and fruit quality in the soil. At maturity (50% fruit ripening), the plant growth and physiological characteristics were measured, revealing that the tolerant genotype exhibited the higher values for plant height, dry weight, potassium, membrane stability index (MSI), and antioxidant enzymes (superoxide dismutase; SOD, catalase; CAT, ascorbate peroxidase; APX, and glutathione reductase; GR). Additionally, it showed enhancement in fruit yield, size, and quality. Conversely, the tolerant genotypes showed a lower reduction in terms of plant height (25.4%) and plant dry weight (41.9%) compared to sensitive genotype (30.1 and 51.4%, respectively). Additionally, the tolerant genotype demonstrated lower values of Ni and Na<sup>+</sup> concentration and MDA accumulation under the combined stress of salt and Ni, compared to the sensitive genotype. Furthermore, the study indicated that Ni at a concentration of 10 mg kg<sup>-1</sup> significantly influenced tomato plant growth by enhancing its nutritional efficiency and competing with Na<sup>+</sup>. However, Ni at concentrations of 20 and 40 mg kg<sup>-1</sup> had toxic effects on the plants, leading to a decrease in plant growth and physiological processes. Moreover, a negative relationship was observed between Ni uptake and Na<sup>+</sup> uptake, while a positive relationship was observed between Ni and K<sup>+</sup> uptake. 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引用次数: 0
摘要
同时出现的多种非生物胁迫,如盐度和重金属(镍),对全球植物的生存和粮食安全构成了严重威胁,尤其是在气候变化的情况下。因此,必须不断测试和研究植物在非生物胁迫组合下的生理变化,以确保可持续性和粮食安全。本实验研究了土壤中盐度(0、7.5 和 15 dS m-1)和镍毒性(0、10、20 和 40 mg kg-1)对耐受型(Naqeeb)和敏感型(Nadir)番茄果实生理机能和果实品质的交互影响。在成熟期(果实成熟 50%),对植物的生长和生理特征进行了测量,结果显示,耐受基因型的株高、干重、钾、膜稳定性指数(MSI)和抗氧化酶(超氧化物歧化酶、过氧化氢酶、抗坏血酸过氧化物酶、谷胱甘肽还原酶和谷胱甘肽还原酶)的值较高。此外,它还提高了果实的产量、大小和质量。相反,与敏感基因型(分别为 30.1% 和 51.4%)相比,耐受基因型的植株高度(25.4%)和植株干重(41.9%)降低较少。此外,与敏感基因型相比,耐受基因型在盐和镍的联合胁迫下表现出较低的 Ni 和 Na+ 浓度值以及 MDA 积累。此外,研究表明,浓度为 10 毫克/千克的 Ni 能提高番茄的营养效率并与 Na+ 竞争,从而显著影响番茄植株的生长。然而,浓度为 20 和 40 毫克/千克的 Ni 会对植物产生毒害作用,导致植物生长和生理过程下降。此外,Ni 吸收量与 Na+ 吸收量之间呈负相关,而 Ni 吸收量与 K+ 吸收量之间呈正相关。总之,这项研究为盐度、重金属毒性和番茄植物生理之间的相互作用提供了宝贵的见解,有助于可持续农业实践的发展。
An interplay of salt and Ni stress on contrasting tomato (Solanum lycopersicum L.) genotypes: a physiological and biochemical insight.
The concurrently occurring multiple abiotic stresses like salinity and heavy metals (Nickel) pose a serious threat to plant survival and food security worldwide, especially in the face of climate change. Therefore, it is imperative to continuously test and study the plant's physiological changes under combinations of abiotic stresses to ensure sustainability and food security. An experiment was conducted to study the interactive effects of salinity (0, 7.5, and 15 dS m-1) and Ni toxicity (0, 10, 20, and 40 mg kg-1) on a tolerant (Naqeeb) and a sensitive (Nadir) Solanum lycopersicum L. physiology and fruit quality in the soil. At maturity (50% fruit ripening), the plant growth and physiological characteristics were measured, revealing that the tolerant genotype exhibited the higher values for plant height, dry weight, potassium, membrane stability index (MSI), and antioxidant enzymes (superoxide dismutase; SOD, catalase; CAT, ascorbate peroxidase; APX, and glutathione reductase; GR). Additionally, it showed enhancement in fruit yield, size, and quality. Conversely, the tolerant genotypes showed a lower reduction in terms of plant height (25.4%) and plant dry weight (41.9%) compared to sensitive genotype (30.1 and 51.4%, respectively). Additionally, the tolerant genotype demonstrated lower values of Ni and Na+ concentration and MDA accumulation under the combined stress of salt and Ni, compared to the sensitive genotype. Furthermore, the study indicated that Ni at a concentration of 10 mg kg-1 significantly influenced tomato plant growth by enhancing its nutritional efficiency and competing with Na+. However, Ni at concentrations of 20 and 40 mg kg-1 had toxic effects on the plants, leading to a decrease in plant growth and physiological processes. Moreover, a negative relationship was observed between Ni uptake and Na+ uptake, while a positive relationship was observed between Ni and K+ uptake. Overall, this study provides valuable insights into the interaction between salinity, heavy metal toxicity, and tomato plant physiology, contributing to the development of sustainable agricultural practices.
期刊介绍:
The International Journal of Phytoremediation (IJP) is the first journal devoted to the publication of laboratory and field research describing the use of plant systems to solve environmental problems by enabling the remediation of soil, water, and air quality and by restoring ecosystem services in managed landscapes. Traditional phytoremediation has largely focused on soil and groundwater clean-up of hazardous contaminants. Phytotechnology expands this umbrella to include many of the natural resource management challenges we face in cities, on farms, and other landscapes more integrated with daily public activities. Wetlands that treat wastewater, rain gardens that treat stormwater, poplar tree plantings that contain pollutants, urban tree canopies that treat air pollution, and specialized plants that treat decommissioned mine sites are just a few examples of phytotechnologies.