Bacterial Community Structure of Pinus Thunbergii Naturally Infected by the Nematode Bursaphelenchus Xylophilus

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http://hdl.handle.net/10138/314170

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Ma , Y , Qu , Z-L , Liu , B , Tan , J-J , Asiegbu , F O & Sun , H 2020 , ' Bacterial Community Structure of Pinus Thunbergii Naturally Infected by the Nematode Bursaphelenchus Xylophilus ' , Microorganisms , vol. 8 , no. 2 , 307 . https://doi.org/10.3390/microorganisms8020307

Title: Bacterial Community Structure of Pinus Thunbergii Naturally Infected by the Nematode Bursaphelenchus Xylophilus
Author: Ma, Yang; Qu, Zhao-Lei; Liu, Bing; Tan, Jia-Jin; Asiegbu, Fred O.; Sun, Hui
Contributor: University of Helsinki, Department of Forest Sciences
Date: 2020-02
Language: eng
Number of pages: 16
Belongs to series: Microorganisms
ISSN: 2076-2607
URI: http://hdl.handle.net/10138/314170
Abstract: Pine wilt disease (PWD) caused by the nematode Bursaphelenchus xylophilus is a devastating disease in conifer forests in Eurasia. However, information on the effect of PWD on the host microbial community is limited. In this study, the bacterial community structure and potential function in the needles, roots, and soil of diseased pine were studied under field conditions using Illumina MiSeq coupled with Phylogenetic Investigation of Communities by Reconstruction of Unobserved states (PICRUSt) software. The results showed that the community and functional structure of healthy and diseased trees differed only in the roots and needles, respectively (p <0.05). The needles, roots, and soil formed unique bacterial community and functional structures. The abundant phyla across all samples were Proteobacteria (41.9% of total sequence), Actinobacteria (29.0%), Acidobacteria (12.2%), Bacteroidetes (4.8%), and Planctomycetes (2.1%). The bacterial community in the healthy roots was dominated by Acidobacteria, Planctomycetes, and Rhizobiales, whereas in the diseased roots, Proteobacteria, Firmicutes, and Burkholderiales were dominant. Functionally, groups involved in the cell process and genetic information processing had a higher abundance in the diseased needles, which contributed to the difference in functional structure. The results indicate that PWD can only affect the host bacteria community structure and function in certain anatomical regions of the host tree.
Subject: pine wilt disease
bacterial community structure
functional structure
Illumina MiSeq sequence
PICRUSt analysis
PLANT-GROWTH PROMOTION
MICROBIAL COMMUNITIES
ORGANIC-CARBON
SP NOV.
SOIL
RHIZOSPHERE
DIVERSITY
NITROGEN
COMPONENTS
GRADIENT
11831 Plant biology
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