Department of Microbial Biotechnology, School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, Tehran, Iran.
Microbial Technology and Products (MTP) Research Center, University of Tehran, Tehran, Iran.
Curr Microbiol. 2022 Aug 24;79(10):299. doi: 10.1007/s00284-022-02993-4.
Biofertilizers based on plant growth-promoting actinobacteria are used as potential alternatives to chemical fertilizers for sustainable agricultural systems. However, successful application of PGPA to agricultural land is challenging. The present study was an attempt to develop and evaluate the effect of a low-cost biofertilizer named NCTS (nanoclay-treated-Streptomyces) based on Streptomyces sp. UTMC 3136 spores amalgamated in a hybrid material of nanoclay Na-montmorillonite K10-glycerol-water substrate. In addition, the effect of NCTS on sunflower growth was investigated. In vivo tests showed a statistically significant increase in the agronomic characteristics of sunflowers treated with NCTS. Characterization of NCTS by FTIR, Raman spectroscopy, and scanning electron microscopy testified to the structural alignment and good adhesion of NCTS components. The viability of NCTS was 100% after 72 h of storage at 4 °C. Overall, the present study attempted to validate the efficacy of the formulation of Streptomyces sp. UTMC 3136 in nanoclay for growth improvement of sunflower. It was the first study to show the administration of PGPA in combination with nanomaterials as a growth enhancing biofertilization agent for sunflower.
基于具有促植物生长作用的放线菌的生物肥料被用作可持续农业系统中化肥的潜在替代品。然而，将 PGPA 成功应用于农业用地具有挑战性。本研究试图开发和评估一种基于链霉菌 sp.UTMC 3136 孢子的低成本生物肥料 NCTS（纳米粘土处理的链霉菌）的效果，该孢子在纳米粘土 Na-蒙脱石 K10-甘油-水基质的混合材料中融合。此外，还研究了 NCTS 对向日葵生长的影响。体内试验表明，用 NCTS 处理的向日葵的农艺特性有统计学意义上的显著增加。通过傅里叶变换红外光谱、拉曼光谱和扫描电子显微镜对 NCTS 的表征证明了 NCTS 成分的结构排列和良好的粘附性。在 4°C 下储存 72 小时后，NCTS 的存活率为 100%。总的来说，本研究试图验证链霉菌 sp.UTMC 3136 在纳米粘土中的配方对向日葵生长的功效。这是首次表明将 PGPA 与纳米材料联合作为向日葵生长增强生物肥料进行管理。
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