L Zhi-wei,WAN Guo-feng,ZHANG Peng,et al.Effects of Doubled CO2 and Enhanced UV-B Radiation on Rhizosphere Ammonia-oxidizing Bacteria and Soil Enzymes in Soybean(Glycine max Merr.）[J].Soybean Science,2012,31(01):69-72.[doi:10.3969/j.issn.1000-9841.2012.01.015]
CO2倍增和UV-B辐射增强对大豆根际氨氧化细菌数量及土壤酶活的影响
- Title:
- Effects of Doubled CO2 and Enhanced UV-B Radiation on Rhizosphere Ammonia-oxidizing Bacteria and Soil Enzymes in Soybean(Glycine max Merr.）
- 文章编号:
- 1000-9841（2012）01-0069-04
- Keywords:
- Carbon dioxide; UV-B; Soybeans; Soil enzyme; Ammonia-oxidizing bacteria
- 分类号:
- S565.1
- 文献标志码:
- A
- 摘要:
- 以根瘤超着生大豆突变体0498和完全不结瘤的大豆突变体0701为材料，在人工气候室内模拟大气CO2浓度倍增以及UV-B辐射增强的复合逆境胁迫条件，研究其对大豆根际氨氧化细菌数量和根际土壤酶活的影响。结果表明：与对照相比,CO2浓度倍增能显著提高大豆根际氨氧化细菌的数量，增加土壤中脲酶、转化酶、酸性磷酸酶和碱性磷酸酶的活性，对完全不结瘤的0701影响更加显著；UV-B辐射增强对氨氧化细菌数量无显著影响，对土壤酶活存在一定的抑制作用。超量根瘤的存在，使CO2倍增和UV-B辐射增强对上述指标的影响得到一定的缓解。
- Abstract:
- The increase of atmospheric CO2 concentration and ultraviolet-B radiation(UV-B)significantly affect crops growth，development and physiological processes.In this study，the soil enzyme activities and amount of soybean rhizosphere ammonia-oxidizing bacteria were analyzed under the condition of doubled CO2 concentration and enhanced UV-B irradiation.Related experiments were imitated in artificial climate room using super-nodulating mutant 0498 and not nodulated soybean mutant 0701 as materials.The results showed that，the amounts of soybean rhizosphere ammonia-oxidizing bacteria activities of soil urease，invertase，acid phosphatase and alkaline phosphatase of doubled CO2were enhanced compared with CK;the influence on 0701 was more significant.UV-B had no effect on amounts of soybean rhizosphere ammonia-oxidizing bacteria and reduced soil enzymes activities.The existence of super nodule could lessen the influence of CO2 concentration and UV-B irradiation on soybean rhizosphere ammonia-oxidizing bacteria and soil enzyme activities.
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备注/Memo
基金项目：山东省自然科学基金(2009ZRB01762)；山东省教育厅基金(J11LC04)。