Efficacy of citric acid chelate and Bacillus sp. in amelioration of cadmium and chromium toxicity in wheat
Efficacy of citric acid chelate and Bacillus sp. in amelioration of cadmium and chromium toxicity in wheat
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DOI：
10.1016/j.chemosphere.2021.133342
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发表时间：
2022-03-01
期刊：
影响因子：
8.8
通讯作者：
Ahmad, Parvaiz
中科院分区：
文献类型：
--
作者：
Ilyas, Noshin;Akhtar, Nosheen;Ahmad, Parvaiz
农业土壤重金属污染是严重影响植物和人类健康的重大问题。为了解决这个问题，我们制定并测试了一种无机(柠檬酸螯合物)和有机(芽孢杆菌)融合的新方法。重金属的改良方法。芽孢杆菌属芽孢杆菌属耐重金属，表现出磷溶解、铁载体生成、氰化氢生成、吲哚乙酸生成和1-氨基环丙烷-1-羧酸脱氨酶生成等植物生长促进特性。数据分析表明，接受柠檬酸(CA)螯合物和芽孢杆菌联合应用的植物。减轻重金属毒性。它们增加了植物细胞的生物量和光合色素的产量。它们抑制了镉(Cd)和铬(Cr)对植物代谢系统的负面影响。酶和非酶类抗氧化剂的活性也有相当大的提高，从而减少了活性氧的破坏作用，并维持了细胞的内部结构。CA络合物和芽孢杆菌处理降低了小麦籽粒中的铬和镉含量。分别为51%和27%。金属的生物积累量也减少到49%(铬)和57%(镉)。这种方法可以在重金属污染土壤的田间条件下进行测试和应用。
Heavy metals contamination in agricultural soil is a major issue having drastic effects on plants and human health. To solve this issue, we have formulated and tested a new approach of fusion of inorganic (citric acid chelate) and organic (Bacillus sp.) amelioration methods for heavy metals. The Bacillus sp. was heavy metal tolerant and showed plant growth-promoting characteristics including phosphate solubilization, siderophore production, hydrogen cyanide production, indole acetic acid production, and 1-Aminocyclopropane-1-carboxylate deaminase production. The analysis of data showed that plants receiving the combined application of citric acid (CA) chelate and Bacillus sp. mitigated heavy metal toxicity. They augmented the biomass production and amount of photosynthetic pigments in plant cells. They suppressed the negative effects of Cadmium (Cd) and Chromium (Cr) on plants' metabolic systems. A considerable increase was also observed in the activity of enzymatic and non-enzymatic antioxidants which reduced the damaging effects of reactive oxygen species and maintained internal structures of cells. The decrease in the content of Cr and Cd in wheat grains by the treatment of CA chelate and Bacillus sp. was 51%, and 27% respectively. The bioaccumulation of metals was also reduced to 49% (Cr) and 57% (Cd). This approach can be tested and applied in field conditions for soils with heavy metals contamination.