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丛枝菌根真菌在内的土壤真菌对入侵植物紫茎泽兰的正反馈：证据来自野外实验

ISSN号：2095-1787
期刊名称：《生物安全学报》
时间：0
分类：Q96[生物学—昆虫学]
作者机构：[1]中国农业科学院植物保护研究所,国家植物病虫害生物学重点实验室,北京100193, [2]黑龙江省农垦科学院,黑龙江佳木斯154007, [3]塔里木大学生命科学学院,新疆生产建设兵团塔里木盆地生物资源保护和利用重点实验室,新疆阿拉尔843300, [4]西奥大学,生态水纹学高级州立中心,WA6009,爱迪斯科文大学,WA6207
相关基金：The National Natural Science Foundation of China （31171907,30871654）ACKNOWLEDGEMENTS： We thank Professors Gabor L. Lovei （Aarhus University, Denmark）, Dan L. Johnson （University of Lethbridge, Canada）, and Imtiaz All Khan （ The University of Agriculture, Peshawar, Pakistan） for their valuable comments and linguistic corrections of the manuscript.

作者：于文清[1,2,3], 刘万学[1], 刘文志[2], 任玉晶[1], 万方浩[1], 张利莉[3]

关键词：紫茎泽兰, 土壤微生物, 微生物对植物的反馈, 外来植物, 入侵机理, 根周, 竞争, Ageratina adenophora Sprengel, soil microbe, microbial feedback to plant, exotic plant, invasion mechanism, rhizosphere, competition

中文摘要：

[背景]土壤微生物群落对植物种群建立、生长及其营养都起着至关重要的作用,植物入侵进程也可能与植物—土壤微生物互作相关.[方法]在温室条件下,研究了从紫茎泽兰入侵的土壤（IS）和本地植物生长的土壤（NS）中获得的微生物群落对外来杂草紫茎泽兰与本地植物生长及其互作的影响.[结果]接种来自IS接种剂的紫茎泽兰,特别是与黄花苜蓿或狗尾草共同种植时,较接种NS接种剂具有更高的丛枝菌根侵染率.来自IS的接种剂促进了与本地植物狗尾草共同栽培的紫茎泽兰的生长,但这一本地植物种的生长却未受影响.接种IS接种剂的紫茎泽兰抑制了与其临近种植的2种本地植物的生长,而接种NS接种剂时,未受此影响.接种IS接种剂时,所有种植组合中的紫茎泽兰对接种剂均呈正响应;而接种NS接种剂时,单独种植或与黄花苜蓿共同种植的紫茎泽兰对接种剂呈负响应.[结论与意义]存在于紫茎泽兰根周包括丛枝菌根真菌在内的土壤微生物,增强了这一入侵杂草与本地植物种的竞争力,这可能是外来植物入侵的一个重要机理.

英文摘要：

The soil microbial community plays an important role in plant establishment,growth and nutrition.Invasion success may be linked to plant-microbe interactions.[Method] Under glasshouse conditions,we compared the effect of soil microbial communities to the growth and interactions between the exotic weed Ageratina adenophora and native plants.The microbial communities were from soil invaded by A.adenophora （IS） vs.that dominated by native weeds （NS）.[Result] A.adenophora which received inoculum from IS had higher arbuscular mycorrhizal colonization rate than that from NS,especially when Medicag.falcata or Setaria viridis grew near A.aderzophora.Microbial inoculum from IS accelerated the growth of A.adenophora,when planted in polyculture with the native plant S.viridis,but the native species growth was not affected.A.adenophora,receiving an inoculum from IS,inhibited the growth of its two neighboring native species,while no such effect was observed when using inoculum from NS.A.adenophora responded positively to the inoculum taken from IS in all planting combinations,but responded negatively to inoculum from NS both in monoculture and in polyculture with M.falcata.[Conclusion and significance] Soil microbes,including arbuscular mycorrhizal fungi present in soil in the thizosphere of A.adenophora enhanced the competiveness of this invasive weed against native species,which may be an important invasion mechanism of exotic plants.

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