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Figure 4. The results of the disk susceptibility test. The average zone of inhibition (mm) of soil microbes against gallotannin of different concentrations (1 mg/mL, 2 mg/mL, and 4 mg/mL) expressed as the difference from control (i.e. 0 mg/mL) which did not show any sign of inhibition. The number of replicates of each trial was shown next to species name : Bacillus pseudomycoides (8), Lysinibacillus boronitolerans (9), L. pakistanensis (7), Paenibacillus dendritiformis (8), Pa. elgii (5), Burkholderia ambifaria (7), Bu. pyrrocinia (8), Pseudomonas koreensis (4). The significance of the planned comparisons with control is marked with asterisks; ‘*’ for 0.01≤P<0.05, ‘**’ for 0.001≤P<0.01, and ‘***’ for P<0.001.

图4 纸片扩散法药敏试验（disk susceptibility test）结果。本图展示土壤微生物对不同浓度（1 mg/mL、2 mg/mL及4 mg/mL）没食子单宁（gallotannin）的抑菌圈直径（mm）平均值，以与对照组（即0 mg/mL组，无任何抑菌迹象）的差值形式呈现。每项试验的重复次数标注于对应菌种名称旁：假类芽孢杆菌（Bacillus pseudomycoides）(8)、耐硼赖氨酸芽孢杆菌（Lysinibacillus boronitolerans）(9)、巴基斯坦赖氨酸芽孢杆菌（L. pakistanensis）(7)、树状类芽孢杆菌（Paenibacillus dendritiformis）(8)、埃尔吉类芽孢杆菌（Pa. elgii）(5)、洋葱伯克霍尔德菌（Burkholderia ambifaria）(7)、吡咯伯克霍尔德菌（Bu. pyrrocinia）(8)、韩国假单胞菌（Pseudomonas koreensis）(4)。与对照组的预设比较显著性以星号标记：‘*’代表0.01≤P<0.05，‘**’代表0.001≤P<0.01，‘***’代表P<0.001。