Mitigating the Harmful Effect of Salinity on Maize Plants Using Fish Waste-Derived Biochar

Heba Sallam, Mervat Abdel Nasser, Hager Mohamed, Marwa Bahy, Hager Khalil
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 Materials and Methods: Maize plants were cultivated in two groups of pots; the first group had the soil without any additions, and the second group had the soil mixed with biochar (1% w/w). Each group was irrigated with saline water (0, 50 and 150 mM NaCl).
 Results: According to the findings, Zea mays exposed to salt stress showed a significant decrease in growth traits such as shoot and root length, fresh weight, and dry weight of shoot and root, compared to untreated control. The addition of biochar significantly enhanced these attributes. As salinity levels increased, the value of photosynthetic pigments gradually declined. Applying biochar to the soil significantly increased the amounts of Chl a, Chl b, and carotenoid. Salt-stressed seedlings treated with biochar have lower levels of soluble sugars, soluble proteins, and total free amino acids at 150 mM NaCl + FWB of the shoot. The findings demonstrate that applying biochar to salt-stressed seedlings caused their proline content to increase noticeably at the highest salinity level (150 mM NaCl). The contents of Na+ and Cl- were positively affected by increasing salt stress. Increasing salt stress had a deleterious impact on K+, Ca2+, and Mg2+ levels. On the other hand, applying FWB raised the content of K+, Ca2+, and Mg2+ while decreasing the amounts of Na+ and Cl-.
 Conclusion: Biochar made from fish waste has the potential to reduce salinity stress significantly.","PeriodicalId":8498,"journal":{"name":"Asian Journal of Biochemistry, Genetics and Molecular Biology","volume":"8 10 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Asian Journal of Biochemistry, Genetics and Molecular Biology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.9734/ajbgmb/2023/v15i3336","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract

Aim: This study was conducted to determine if applying biochar made from fish waste to the soil can alleviate the adverse impacts of salinity stress on maize (Zea mays L.) seedling growth. Materials and Methods: Maize plants were cultivated in two groups of pots; the first group had the soil without any additions, and the second group had the soil mixed with biochar (1% w/w). Each group was irrigated with saline water (0, 50 and 150 mM NaCl). Results: According to the findings, Zea mays exposed to salt stress showed a significant decrease in growth traits such as shoot and root length, fresh weight, and dry weight of shoot and root, compared to untreated control. The addition of biochar significantly enhanced these attributes. As salinity levels increased, the value of photosynthetic pigments gradually declined. Applying biochar to the soil significantly increased the amounts of Chl a, Chl b, and carotenoid. Salt-stressed seedlings treated with biochar have lower levels of soluble sugars, soluble proteins, and total free amino acids at 150 mM NaCl + FWB of the shoot. The findings demonstrate that applying biochar to salt-stressed seedlings caused their proline content to increase noticeably at the highest salinity level (150 mM NaCl). The contents of Na+ and Cl- were positively affected by increasing salt stress. Increasing salt stress had a deleterious impact on K+, Ca2+, and Mg2+ levels. On the other hand, applying FWB raised the content of K+, Ca2+, and Mg2+ while decreasing the amounts of Na+ and Cl-. Conclusion: Biochar made from fish waste has the potential to reduce salinity stress significantly.
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利用鱼渣衍生的生物炭减轻盐对玉米植物的有害影响
目的:研究在土壤中施用鱼粪生物炭是否能缓解盐胁迫对玉米幼苗生长的不利影响。材料与方法:采用两组盆栽法栽培玉米植株;第一组土壤不添加任何添加剂,第二组土壤添加生物炭(1% w/w)。各组灌洗盐水(0、50、150 mM NaCl)。 结果:盐胁迫下玉米茎、根长、鲜重、茎、根干重等生长性状显著低于未处理玉米。添加生物炭显著增强了这些特性。随着盐度的增加,光合色素的价值逐渐下降。在土壤中施用生物炭显著增加了Chl a、Chl b和类胡萝卜素的含量。在150 mM NaCl + FWB处理下,盐胁迫幼苗的可溶性糖、可溶性蛋白和总游离氨基酸含量较低。结果表明,在盐胁迫幼苗中施用生物炭,在最高盐度(150 mM NaCl)下,其脯氨酸含量显著增加。盐胁迫的增加对Na+和Cl-含量有显著的正向影响。增加盐胁迫对K+、Ca2+和Mg2+水平有不利影响。另一方面,施用FWB提高了K+、Ca2+和Mg2+的含量,降低了Na+和Cl-的含量;结论:鱼粪生物炭具有显著降低盐胁迫的潜力。
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