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Developing a nano-Fe Complex to Supply Iron and Improve Salinity Tolerance of Pistachio under Calcium Bicarbonate Stress
Communications in Soil Science and Plant Analysis ( IF 1.3 ) Pub Date : 2020-08-05 , DOI: 10.1080/00103624.2020.1798985
Soheil Karimi 1 , Vahid Tavallali 2 , Louise Ferguson 3 , Shima Mirzaei 1
Affiliation  

ABSTRACT Iron (Fe) is chronically low in saline sodic soils. The effect of nano iron (Fe) particles complexed with salicylic acid (nFe-SA) on the Fe supply and salinity tolerance of Pistacia vera ‘Akbari’ seedlings were compared with seedlings grown in a control Hoagland nutrient solution amended with Fe-EDDHA. The saline treatments were prepared by adding 0 (control), 100, and 200 mM NaCl to the nutrient solutions. Moreover, calcium bicarbonate (0.2% w/v) was added to all these treatments. Plant growth, water relations, injury indexes, and mineral composition were investigated after 75 days. Growth and chlorophyll content of the plants was the same with both nFe-SA and Fe-EDDHA treatments under non-saline conditions. Increasing salinity stress restricted plant growth, and reduced leaf relative water content and water potential. Leaf abscission due to Na accumulation was the major cause of biomass loss and plant growth inhibition. Salinity also reduced leaf inorganic nutrient concentrations and produced leaf oxidative damage. However, under salinity stress, the nFe-SA treated plants had less leaf abscission and growth limitation than the Fe-EDDHA plants. The nFe-SA application decreased plasma membrane damage and chlorophyll degradation. Salinity stress increased Zn, Cu, and Fe concentrations in the Fe-EDDHA treated plants. However, low chlorophyll concentration in these plants indicated that inorganic nutrients were not functional. The results suggest nFe-SA can be an effective and environmentally friendly Fe source in saline and calcareous alkaline soils.

中文翻译:

开发纳米铁配合物来补铁并提高开心果在碳酸氢钙胁迫下的耐盐性

摘要 盐碱土中铁 (Fe) 的含量长期偏低。将与水杨酸 (nFe-SA) 复合的纳米铁 (Fe) 颗粒对 Pistacia vera 'Akbari' 幼苗的 Fe 供应和耐盐性的影响与在用 Fe-EDDHA 修正的对照 Hoagland 营养液中生长的幼苗进行比较。通过向营养液中添加 0(对照)、100 和 200 mM NaCl 来制备盐水处理。此外,所有这些处理中都加入了碳酸氢钙 (0.2% w/v)。75 天后调查植物生长、水分关系、伤害指数和矿物质成分。在非盐水条件下,nFe-SA 和 Fe-EDDHA 处理的植物生长和叶绿素含量相同。增加盐分胁迫限制了植物的生长,并降低了叶片的相对含水量和水势。由于 Na 积累引起的叶片脱落是生物量损失和植物生长抑制的主要原因。盐度还降低了叶片无机养分浓度并产生了叶片氧化损伤。然而,在盐分胁迫下,nFe-SA 处理的植物比 Fe-EDDHA 植物具有更少的叶片脱落和生长限制。nFe-SA 应用减少了质膜损伤和叶绿素降解。盐胁迫增加了 Fe-EDDHA 处理植物中 Zn、Cu 和 Fe 的浓度。然而,这些植物中的低叶绿素浓度表明无机养分没有作用。结果表明,nFe-SA 在盐碱地和钙质碱性土壤中是一种有效且环境友好的铁源。盐度还降低了叶片无机养分浓度并产生了叶片氧化损伤。然而,在盐分胁迫下,nFe-SA 处理的植物比 Fe-EDDHA 植物具有更少的叶片脱落和生长限制。nFe-SA 应用减少了质膜损伤和叶绿素降解。盐胁迫增加了 Fe-EDDHA 处理植物中 Zn、Cu 和 Fe 的浓度。然而,这些植物中的低叶绿素浓度表明无机养分没有作用。结果表明,nFe-SA 在盐碱地和钙质碱性土壤中是一种有效且环境友好的铁源。盐度还降低了叶片无机养分浓度并产生了叶片氧化损伤。然而,在盐分胁迫下,nFe-SA 处理的植物比 Fe-EDDHA 植物具有更少的叶片脱落和生长限制。nFe-SA 应用减少了质膜损伤和叶绿素降解。盐胁迫增加了 Fe-EDDHA 处理植物中 Zn、Cu 和 Fe 的浓度。然而,这些植物中的低叶绿素浓度表明无机养分没有作用。结果表明,nFe-SA 在盐碱地和钙质碱性土壤中是一种有效且环境友好的铁源。nFe-SA 应用减少了质膜损伤和叶绿素降解。盐胁迫增加了 Fe-EDDHA 处理植物中 Zn、Cu 和 Fe 的浓度。然而,这些植物中的低叶绿素浓度表明无机养分没有作用。结果表明,nFe-SA 在盐碱地和钙质碱性土壤中是一种有效且环境友好的铁源。nFe-SA 应用减少了质膜损伤和叶绿素降解。盐胁迫增加了 Fe-EDDHA 处理植物中 Zn、Cu 和 Fe 的浓度。然而,这些植物中的低叶绿素浓度表明无机养分没有作用。结果表明,nFe-SA 在盐碱地和钙质碱性土壤中是一种有效且环境友好的铁源。
更新日期:2020-08-05
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