Abstract In the current study, the PGP (production of siderophore and IAA, fixation of nitrogen and solubilization of phosphate) potential of forty-five bacterial isolates comprising sixteen genera (Marinibacillus, Zhihengliuella, Bacillus, Nesterenkonia, Halobacillus, Promicromonospora, Terribacillus, Jeotgalibacillus, Staphylococcus, Oceanobacillus, Virgibacillus, Halomonas, Gracilibacillus, Planococcus, Thalassobacillus and Microbacterium) was investigated. Among these forty-five bacterial isolates, most of the isolates (40 isolates) possess plant growth promoting potential. Four bacterial isolates [Marinibacillus sp. (EM1), Zhihengliuella salsuginis (EM30), Planococcus sp. (EK9), and Promicromonospora sp. (EK12)] possessing PGP traits were applied on the barley grown under salt (NaCl) stress in a hydroponic system. Comparing to the un-inoculated group, all the four bacterial isolates significantly improved plant growth that inhibited with NaCl (200 mM) stress. The growth rate of the plants inoculated with Zhihengliuella salsuginis (EM30), Promicromonospora sp. (EK12), Planococcus sp. (EK9), and Marinibacillus sp. (EM1) was 81.86, 80.51, 70.62 and 69.22, respectively. As far as we know, this is the first report showing the PGP potential of Marinibacillus sp. (EM1), Bacillus horikoshii (EM9), Bacillus patagoniensis (EM12), Bacillus agaradhaerens (EK13), Oceanobacillus profundus (EM26) Thalassobacillus devorans (EM34) and Promicromonospora sp. (EK12).

中文翻译：

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耐盐/嗜盐植物促进生长的盐胁迫缓解潜力

摘要 在目前的研究中，包括 16 个属的 45 个细菌分离株的 PGP（产生铁载体和 IAA，固氮和增溶磷酸盐）潜力（Marinibacillus、Zhihgliuella、Bacillus、Nesterenkonia、Halobacillus、Promicromonospora、 Terribacillus、 Jeotgalibacillus、研究了葡萄球菌、海洋杆菌、Virgibacillus、Halomonas、Gracilibacillus、Planococcus、Thalassobacillus 和 Microbacterium)。在这 45 个细菌分离株中，大多数分离株（40 个分离株）具有促进植物生长的潜力。四种细菌分离株 [Marinibacillus sp. (EM1), 红柳枝杆菌 (EM30), Planococcus sp. (EK9) 和 Promicromonospora sp。(EK12)] 具有 PGP 特性被应用于在盐 (NaCl) 胁迫下在水培系统中生长的大麦。与未接种组相比，所有四种细菌分离物均显着改善了受 NaCl (200 mM) 胁迫抑制的植物生长。接种植株的生长速度，接种了红木志横柳菌 (EM30), Promicromonospora sp。(EK12), Planococcus sp. (EK9) 和 Marinibacillus sp。(EM1) 分别为 81.86、80.51、70.62 和 69.22。据我们所知，这是第一份显示 Marinibacillus sp. PGP 潜力的报告。(EM1)、堀越芽孢杆菌 (EM9)、巴塔哥尼芽孢杆菌 (EM12)、琼脂芽孢杆菌 (EK13)、深海杆菌 (EM26) 腐食海藻 (EM34) 和原小单孢菌属。(EK12)。原小单孢菌属 (EK12), Planococcus sp. (EK9) 和 Marinibacillus sp。(EM1) 分别为 81.86、80.51、70.62 和 69.22。据我们所知，这是第一份显示 Marinibacillus sp. PGP 潜力的报告。(EM1)、堀越芽孢杆菌 (EM9)、巴塔哥尼芽孢杆菌 (EM12)、琼脂芽孢杆菌 (EK13)、深海杆菌 (EM26) 腐食海藻 (EM34) 和原小单孢菌属。(EK12)。原小单孢菌属 (EK12), Planococcus sp. (EK9) 和 Marinibacillus sp。(EM1) 分别为 81.86、80.51、70.62 和 69.22。据我们所知，这是第一份显示 Marinibacillus sp. PGP 潜力的报告。(EM1)、堀越芽孢杆菌 (EM9)、巴塔哥尼芽孢杆菌 (EM12)、琼脂芽孢杆菌 (EK13)、深海杆菌 (EM26) 腐食海藻 (EM34) 和原小单孢菌属。(EK12)。