李剑峰, 师尚礼, 张淑卿. 不同Ca3(PO4)2含量及菌种保存温度下SL01菌株的解磷及生长能力[J]. 中国生态农业学报(中英文), 2010, 18(1): 94-97. DOI: 10.3724/SP.J.1011.2010.00094
引用本文: 李剑峰, 师尚礼, 张淑卿. 不同Ca3(PO4)2含量及菌种保存温度下SL01菌株的解磷及生长能力[J]. 中国生态农业学报(中英文), 2010, 18(1): 94-97. DOI: 10.3724/SP.J.1011.2010.00094
LI Jian-Feng, SHI Shang-Li, ZHANG Shu-Qing. Growth and phosphate-dissolving ability of strain SL01 under different storage temperatures and calcium phosphate levels[J]. Chinese Journal of Eco-Agriculture, 2010, 18(1): 94-97. DOI: 10.3724/SP.J.1011.2010.00094
Citation: LI Jian-Feng, SHI Shang-Li, ZHANG Shu-Qing. Growth and phosphate-dissolving ability of strain SL01 under different storage temperatures and calcium phosphate levels[J]. Chinese Journal of Eco-Agriculture, 2010, 18(1): 94-97. DOI: 10.3724/SP.J.1011.2010.00094

不同Ca3(PO4)2含量及菌种保存温度下SL01菌株的解磷及生长能力

Growth and phosphate-dissolving ability of strain SL01 under different storage temperatures and calcium phosphate levels

  • 摘要: 试验比较了不同保存温度和培养基Ca3(PO4)2含量下解磷根瘤菌SL01的生长和解磷能力。结果表明: 固体培养条件下, 增大Ca3(PO4)2添加量能促进菌落生长, 8 g·L-1处理菌落直径(d)为5 g·L-1、3 g·L-1、1 g·L-1和0.5 g·L-1处理的116.9%、127.7%、130.1%和132.7%。0~8 g·L-1的Ca3(PO4)2含量范围内, 菌株的解磷能力无显著差异, 故更适于以溶磷圈直径D与菌落直径d的比值D/d来衡量菌株在固态环境如土壤中的解磷能力; 其菌液最适宜于15 ℃下保存, 4 ℃次之。不同保存温度下菌种的解磷能力为-18 ℃>-10 ℃>4 ℃>15 ℃> 28 ℃>35 ℃; 不同保存温度下SL01菌株的菌落直径为4 ℃>15 ℃>-18 ℃>28 ℃>-10 ℃>35 ℃; 菌液在不同温度下保存60 d后的活菌含量为15 ℃>4 ℃>28 ℃>-10 ℃>35 ℃>-18 ℃。

     

    Abstract: The growth rate and phosphate-dissolving ability of phosphate-dissolving rhizobium SL01 in different calcium phosphate Ca3(PO4)22 content of substrate and storage temperatures were determined. Based on solid culture, the results indicate enhanced colony growth with increasing levels of Ca3(PO4)2. Colony diameter of treatment with 8.0 g·L?1 Ca3(PO4)2 is respectively 16.9%, 27.7%, 30.1% and 32.7% higher than that of 5.0 g·L?1, 3.0 g·L?1, 1.0 g·L?1 and 0.5 g·L?1 Ca3(PO4)2 treatments. At Ca3(PO4)2 range of 0~8.0 g·L?1, the phosphate-dissolving ability of the strain is not obviously different. It is therefore more suitable to use D/d (phosphate-dissolving ring diameter to colony diameter) ratio in measuring phosphate-dissolving ability of strains in solid surrounding such as soil. Bacteria liquid is best preserved under 15 ℃, followed by 4 ℃. Phosphate-dissolving ability of SL01 under different storage temperatures is -18 ℃ > -10 ℃ > 4 ℃ > 15 ℃ > 28 ℃ > 35 ℃. The order of SL01 colony diameter under different storage temperatures is 4 ℃ > 15 ℃ > -18 ℃ > 28 ℃ > -10 ℃ > 35 ℃. Order of viable bacteria amount of strain preserved for 60 d under different temperatures is 15 ℃ > 4 ℃ > 28 ℃ > -10 ℃ > 35 ℃ > -18 ℃.

     

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