NDLI: Pathogen invasion indirectly changes the composition of soil microbiome via shifts in root exudation profile

Content Provider	Springer Nature Link
Author	Gu, Yian Wei, Zhong Wang, Xueqi Friman, Ville Petri Huang, Jianfeng Wang, Xiaofang Mei, Xinlan Xu, Yangchun Shen, Qirong Jousset, Alexandre
Copyright Year	2016
Abstract	Plant-derived root exudates modulate plant-microbe interactions and may play an important role in pathogen suppression. Root exudates may, for instance, directly inhibit pathogens or alter microbiome composition. Here, we tested if plants modulate their root exudation in the presence of a pathogen and if these shifts alter the rhizosphere microbiome composition. We added exudates from healthy and Ralstonia solanacearum-infected tomato plants to an unplanted soil and followed changes in bacterial community composition. The presence of pathogen changed the exudation of phenolic compounds and increased the release of caffeic acid. The amendment of soils with exudates from the infected plants led to a development of distinct and less diverse soil microbiome communities. Crucially, we could reproduce similar shift in microbiome composition by adding pure caffeic acid into the soil. Caffeic acid further suppressed R. solanacearum growth in vitro. We conclude that pathogen-induced changes in root exudation profile may serve to control pathogen both by direct inhibition and by indirectly shifting the composition of rhizosphere microbiome.
Starting Page	997
Ending Page	1005
Page Count	9
File Format	PDF
ISSN	01782762
Journal	Biology and Fertility of Soils
Volume Number	52
Issue Number	7
e-ISSN	14320789
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-07-27
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Amplicon sequencing Phenolics Ralstonia solanacearum Root exudation Root-pathogen interaction Soil microbiome Agriculture Soil Science & Conservation
Content Type	Text
Resource Type	Article
Subject	Agronomy and Crop Science Soil Science Microbiology

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