南洞庭湖地区杨树清理迹地典型植物叶际微生物群落结构  

Characteristics of Microbial Structure of Typical Plant Communities in South Dongting Lake Poplar Clearing Area

作　　者：邓楠 田育新[1,2] 宋庆安 田菲[1,2] 马丰丰 罗学卫 李德先[3] 严静芬 DENG Nan;TIAN Yu-xin;SONG Qing-an;TIAN Fei;MA Feng-feng;LUO Xue-wei;LI De-xian;YAN Jing-fen(Hunan Academy of Forestry,Changsha 410004,China;Hunan Cili Forest Ecosystem National Positioning Observation and Research Station,Cili 427200,China;Yuanjiang Administration Bureau of Yiyang South Dongting Lake Nature Reserve,Yuanjiang 413100,China)

机构地区：[1]湖南省林业科学院,湖南长沙410004 [2]湖南慈利森林生态系统国家定位观测研究站,湖南慈利427200 [3]益阳市南洞庭湖自然保护区沅江市管理局,湖南沅江413100

出　　处：《生态与农村环境学报》2022年第7期915-924,共10页Journal of Ecology and Rural Environment

基　　金：湖南省林业科技创新专项重点项目(XLK201901)。

摘　　要：洞庭湖是我国最重要的湖泊湿地之一,在维持地区生态安全方面起到关键作用。由于早期经济发展等原因,在洞庭湖地区大规模种植杨树,对洞庭湖地区生物多样性保护和湿地生态系统安全造成严重威胁,由此实施了大规模的清理,并对清理迹地进行生态修复。基于Illumina HiSeq测序平台,对南洞庭湖杨树清理迹地5个原生及天然更新的主要植物群落叶际微生物群落结构进行测序和分析。结果表明,在5个植物群落中,杨树群落的细菌Shannon指数和β多样性显著高于其他群落,真菌α和β多样性显著低于部分草本群落;组成差异分析表明特异性细菌种类以杨树群落为最多,特异性真菌种类以原生芦苇群落为最多;在组成上,所有植物群落中丰度较高的细菌门纲类分别为γ-变形菌纲(Gammaproteobacteria)、芽孢杆菌纲(Bacilli)和丹毒丝菌纲(Erysipelotrichia),丰度较高的真菌门纲类分别为座囊菌纲(Dothideomycetes)和粪壳菌纲(Sordariomycetes)。该研究探索了南洞庭湖杨树清理迹地生态修复后主要植物群落叶际微生物群落结构的差异,以期为洞庭湖杨树清理迹地的生态修复提供理论支持。As one of the most important lake wetland ecosystems in China,Dongting Lake plays a key role in maintaining regional ecological security.Due to the early economic development and other factors,large-scale planting of poplar has posed a serious threat to the biodiversity protection and wetland ecosystem security of Dongting Lake area.Therefore,ecological restoration project has been carried out to resolve this problem.In this research,the phyllosphere microorganism from five primary and natural regeneration plant communities in South Dongting Lake restoration area were analysed by using Illumina HiSeq sequencing platform.The results show that the Shannon index andβdiversity of poplar bacteria community was higher than others,but theαandβdiversity of poplar fungus community was lower than some herbaceous communities.Poplar had the most specific bacterial species and the native Phragmites communis community had the most specific fungal species.Gammaproteobacteria,Bacilli and Erysipelotrichia were the most abundant bacteria in all plant communities.Dothideomycetes and Sordariomycetes were the most abundant fungi in all plant communities.This study has explored the differences of microbial community structure in the main plant communities after ecological restoration in South Dongting Lake area,and provides theoretical support for ecological restoration of poplar clearing slashes in Dongting Lake area.

关 键 词：叶际微生物 南洞庭湖 湿地植物 细菌多样性 真菌多样性 

分 类 号：Q938.1[生物学—微生物学]