自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 27    No. 6    June 2020

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Co-invasion of daisy fleabane and Canada goldenrod pose synergistic impacts on soil bacterial richness
WEI Mei(韦梅), WANG Shu(王舒), XIAO Hong-guang(肖鸿光), WU Bing-de(伍丙德),JIANG Kun(姜坤), WANG Cong-yan(王从彦)

School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China

Abstract:Understanding the impacts of co-invasion of multiple invaders on soil bacterial communities is significant in understanding the mechanisms driving successful invasion. This study aimed to determine the response of soil bacterial communities to co-invasion of two invaders daisy fleabane (Erigeron annuus) and Canada goldenrod (Solidago canadensis). Daisy fleabane and/or Canada goldenrod invasion significantly enhanced the operational taxonomic unit richness, Shannon index, and Chao1 index of soil bacterial communities. Canada goldenrod under light degree of invasion and co-invasion of daisy fleabane and Canada goldenrod regardless of invasion degree signally improved the ACE index of soil bacterial communities. Thus, the two invaders can enhance soil bacterial diversity and richness to facilitating subsequent invasion due to the fact that higher soil bacterial diversity and richness can enhance the levels of soil function and nutrients acquisition of plant species. ACE index of soil bacterial communities subjected to co-invasion of daisy fleabane and Canada goldenrod regardless of invasion degree was greater than that under the independent invasion of either daisy fleabane or Canada goldenrod. Hence, co-invasion of the two invaders can impose synergistic impacts on soil bacterial richness, which may build a preferable soil micro-environment via the intensified soil bacterial communities, which is contributive to their following invasion.

 

Key words: co-invasion; Erigeron annuus; invasive plant species; soil bacterial communities; Solidago canadensis

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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