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甘肃省麦积山景区3种典型裸子植物土壤微生物群落结构分析
引用本文:陈利云,王弋博,李三相,汪之波.甘肃省麦积山景区3种典型裸子植物土壤微生物群落结构分析[J].微生物学通报,2016,43(9):1939-1944.
作者姓名:陈利云  王弋博  李三相  汪之波
作者单位:天水师范学院生物工程与技术学院 甘肃省农业微生物重点实验室 甘肃 天水 741000,天水师范学院生物工程与技术学院 甘肃省农业微生物重点实验室 甘肃 天水 741000,天水师范学院生物工程与技术学院 甘肃省农业微生物重点实验室 甘肃 天水 741000,天水师范学院生物工程与技术学院 甘肃省农业微生物重点实验室 甘肃 天水 741000
基金项目:国家自然科学基金项目(No. 31060065)
摘    要:【目的】探明不同种类的植物对其根际土壤微生物数量分布与群落结构的影响。【方法】将微生物计数法与磷脂脂肪酸(PLFA)法相结合,分析比较麦积山景区3种典型裸子植物根际土壤微生物的数量分布和PLFA种类、含量及主成分结构。【结果】3种植物根际土壤微生物数量均以细菌最多,真菌最少;总PLFA含量以红豆杉Taxus chinensis(Pilg)Rehder.]最高、种类最多,日本落叶松Larix kaempferi(Lamb)Carriere.]最低,红豆杉与云杉(Picea asperata Mast)PLFA主要成分相似度高于日本落叶松;外来种日本落叶松无论微生物数量,还是种类以及PLFA结构组成与红豆杉、云杉均有较大的差异,多样性显著下降。【结论】与土著裸子植物相比,外来种日本落叶松能明显改变根际土壤微生物数量分布与群落结构。

关 键 词:麦积山景区,裸子植物,根际土壤,微生物群落,磷脂脂肪酸

Microbial community structure of three typical gymnosperms soil in scenic area of Maijishan, Gansu Province
CHEN Li-Yun,WANG Yi-Bo,LI San-Xiang and WANG Zhi-Bo.Microbial community structure of three typical gymnosperms soil in scenic area of Maijishan, Gansu Province[J].Microbiology,2016,43(9):1939-1944.
Authors:CHEN Li-Yun  WANG Yi-Bo  LI San-Xiang and WANG Zhi-Bo
Institution:School of Bioengineering and Technology, Tianshui Normal University, Key Laboratory of Agriculture Microbiology in Gansu Province, Tianshui, Gansu 741000, China,School of Bioengineering and Technology, Tianshui Normal University, Key Laboratory of Agriculture Microbiology in Gansu Province, Tianshui, Gansu 741000, China,School of Bioengineering and Technology, Tianshui Normal University, Key Laboratory of Agriculture Microbiology in Gansu Province, Tianshui, Gansu 741000, China and School of Bioengineering and Technology, Tianshui Normal University, Key Laboratory of Agriculture Microbiology in Gansu Province, Tianshui, Gansu 741000, China
Abstract:Objective] In order to identify the microbial community structure of the different gymnosperm types. Methods] Microbial culture and PLFA (Phospholipid fatty-acid analysis) methods were employed to study the microbe quantity, PLFAs types and content of three typical gymnosperms soil in scenic area of Maijishan, gansu Province. Results] There existed distinct difference on composition and structure of soil microbial. Microbial number was highest in bacteria and lowest in fungi. Total PLFAs content and types were the highest of Taxus chinensis (Pilg.) Rehder and lowest of Larix kaempferi (Lamb.) Carriere. Principal component of PLFA analysis that has high similarity with Taxus and Picea asperata Mast. than Larix kaempferi (Lamb.) Carriere. There was obvious difference with Microbial types and structure form of Larix kaempferi (Lamb.) Carrière. Diversity declined significantly than those in the others rhizosphere soils. Conclusion] Microbial number and community structure in rhizosphere soil of Larix kaempferi (Lamb.) Carriere have significantly changed comparing with native gymnosperms.
Keywords:Scenic area of Maijishan  Gymnosperm  Rhizosphere soil  Microbial community  PLFA
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